Merge branch 'master' of gitlab.com:grassrootseconomics/cic-internal-integration into philip/multi-token-v1

apps/cic-ussd/cic_ussd/account/balance.py

@@ -2,7 +2,7 @@
 
 import json
 import logging
-from typing import Optional
+from typing import Union, Optional
 
 # third-party imports
 from cic_eth.api import Api
@@ -14,7 +14,7 @@ from cic_ussd.account.transaction import from_wei
 from cic_ussd.cache import cache_data_key, get_cached_data
 from cic_ussd.error import CachedDataNotFoundError
 
-logg = logging.getLogger()
+logg = logging.getLogger(__file__)
 
 
 def get_balances(address: str,
@@ -43,7 +43,7 @@ def get_balances(address: str,
     :return: A list containing balance data if called synchronously. | None
     :rtype: list | None
     """
-    logg.debug(f'retrieving balance for address: {address}')
+    logg.debug(f'retrieving {token_symbol} balance for address: {address}')
     if asynchronous:
         cic_eth_api = Api(
             chain_str=chain_str,
@@ -60,11 +60,13 @@ def get_balances(address: str,
         return balance_request_task.get()
 
 
-def calculate_available_balance(balances: dict) -> float:
+def calculate_available_balance(balances: dict, decimals: int) -> float:
     """This function calculates an account's balance at a specific point in time by computing the difference from the
     outgoing balance and the sum of the incoming and network balances.
     :param balances: incoming, network and outgoing balances.
     :type balances: dict
+    :param decimals:
+    :type decimals: int
     :return: Token value of the available balance.
     :rtype: float
     """
@@ -73,7 +75,7 @@ def calculate_available_balance(balances: dict) -> float:
     network_balance = balances.get('balance_network')
 
     available_balance = (network_balance + incoming_balance) - outgoing_balance
-    return from_wei(value=available_balance)
+    return from_wei(decimals=decimals, value=available_balance)
 
 
 def get_adjusted_balance(balance: int, chain_str: str, timestamp: int, token_symbol: str):
@@ -94,24 +96,25 @@ def get_adjusted_balance(balance: int, chain_str: str, timestamp: int, token_sym
     return demurrage_api.get_adjusted_balance(token_symbol, balance, timestamp).result
 
 
-def get_cached_available_balance(blockchain_address: str) -> float:
+def get_cached_available_balance(decimals: int, identifier: Union[list, bytes]) -> float:
     """This function attempts to retrieve balance data from the redis cache.
-    :param blockchain_address: Ethereum address of an account.
+    :param decimals:
-    :type blockchain_address: str
+    :type decimals: int
+    :param identifier: An identifier needed to create a unique pointer to a balances resource.
+    :type identifier: bytes | list
     :raises CachedDataNotFoundError: No cached balance data could be found.
     :return: Operational balance of an account.
     :rtype: float
     """
-    identifier = bytes.fromhex(blockchain_address)
+    key = cache_data_key(identifier=identifier, salt=MetadataPointer.BALANCES)
-    key = cache_data_key(identifier, salt=MetadataPointer.BALANCES)
     cached_balances = get_cached_data(key=key)
     if cached_balances:
-        return calculate_available_balance(json.loads(cached_balances))
+        return calculate_available_balance(balances=json.loads(cached_balances), decimals=decimals)
     else:
-        raise CachedDataNotFoundError(f'No cached available balance for address: {blockchain_address}')
+        raise CachedDataNotFoundError(f'No cached available balance at {key}')
 
 
-def get_cached_adjusted_balance(identifier: bytes):
+def get_cached_adjusted_balance(identifier: Union[list, bytes]):
     """
     :param identifier:
     :type identifier:
@@ -120,3 +123,22 @@ def get_cached_adjusted_balance(identifier: bytes):
     """
     key = cache_data_key(identifier, MetadataPointer.BALANCES_ADJUSTED)
     return get_cached_data(key)
+
+
+def get_account_tokens_balance(blockchain_address: str, chain_str: str, token_symbols_list: list):
+    """
+    :param blockchain_address:
+    :type blockchain_address:
+    :param chain_str:
+    :type chain_str:
+    :param token_symbols_list:
+    :type token_symbols_list:
+    :return:
+    :rtype:
+    """
+    for token_symbol in token_symbols_list:
+        get_balances(address=blockchain_address,
+                     chain_str=chain_str,
+                     token_symbol=token_symbol,
+                     asynchronous=True,
+                     callback_param=f'{blockchain_address},{token_symbol}')

apps/cic-ussd/cic_ussd/account/statement.py

@@ -69,7 +69,8 @@ def parse_statement_transactions(statement: list):
     parsed_transactions = []
     for transaction in statement:
         action_tag = transaction.get('action_tag')
-        amount = from_wei(transaction.get('token_value'))
+        decimals = transaction.get('token_decimals')
+        amount = from_wei(decimals, transaction.get('token_value'))
         direction_tag = transaction.get('direction_tag')
         token_symbol = transaction.get('token_symbol')
         metadata_id = transaction.get('metadata_id')

apps/cic-ussd/cic_ussd/account/tokens.py

@@ -1,19 +1,115 @@
 # standard imports
+import hashlib
 import json
 import logging
-from typing import Dict, Optional
+from typing import Optional, Union
 
 # external imports
 from cic_eth.api import Api
 from cic_types.condiments import MetadataPointer
 
 # local imports
+from cic_ussd.account.balance import get_cached_available_balance
 from cic_ussd.account.chain import Chain
-from cic_ussd.cache import cache_data_key, get_cached_data
+from cic_ussd.cache import cache_data, cache_data_key, get_cached_data
-from cic_ussd.error import SeppukuError
+from cic_ussd.error import CachedDataNotFoundError, SeppukuError
+from cic_ussd.metadata.tokens import query_token_info, query_token_metadata
+from cic_ussd.processor.util import wait_for_cache
+from cic_ussd.translation import translation_for
+
+logg = logging.getLogger(__file__)
 
 
-logg = logging.getLogger(__name__)
+def collate_token_metadata(token_info: dict, token_metadata: dict) -> dict:
+    """
+    :param token_info:
+    :type token_info:
+    :param token_metadata:
+    :type token_metadata:
+    :return:
+    :rtype:
+    """
+    logg.debug(f'Collating token info: {token_info} and token metadata: {token_metadata}')
+    description = token_info.get('description')
+    issuer = token_info.get('issuer')
+    location = token_metadata.get('location')
+    contact = token_metadata.get('contact')
+    return {
+        'description': description,
+        'issuer': issuer,
+        'location': location,
+        'contact': contact
+    }
+
+
+def create_account_tokens_list(blockchain_address: str):
+    """
+    :param blockchain_address:
+    :type blockchain_address:
+    :return:
+    :rtype:
+    """
+    token_symbols_list = get_cached_token_symbol_list(blockchain_address=blockchain_address)
+    token_list_entries = []
+    if token_symbols_list:
+        logg.debug(f'Token symbols: {token_symbols_list} for account: {blockchain_address}')
+        for token_symbol in token_symbols_list:
+            entry = {}
+            logg.debug(f'Processing token data for: {token_symbol}')
+            key = cache_data_key([bytes.fromhex(blockchain_address), token_symbol.encode('utf-8')], MetadataPointer.TOKEN_DATA)
+            token_data = get_cached_data(key)
+            token_data = json.loads(token_data)
+            logg.debug(f'Retrieved token data: {token_data} for: {token_symbol}')
+            token_name = token_data.get('name')
+            entry['name'] = token_name
+            token_symbol = token_data.get('symbol')
+            entry['symbol'] = token_symbol
+            token_issuer = token_data.get('issuer')
+            entry['issuer'] = token_issuer
+            token_contact = token_data['contact'].get('phone')
+            entry['contact'] = token_contact
+            token_location = token_data.get('location')
+            entry['location'] = token_location
+            decimals = token_data.get('decimals')
+            identifier = [bytes.fromhex(blockchain_address), token_symbol.encode('utf-8')]
+            wait_for_cache(identifier, f'Cached available balance for token: {token_symbol}', MetadataPointer.BALANCES)
+            token_balance = get_cached_available_balance(decimals=decimals, identifier=identifier)
+            entry['balance'] = token_balance
+            token_list_entries.append(entry)
+    account_tokens_list = order_account_tokens_list(token_list_entries, bytes.fromhex(blockchain_address))
+    key = cache_data_key(bytes.fromhex(blockchain_address), MetadataPointer.TOKEN_DATA_LIST)
+    cache_data(key, json.dumps(account_tokens_list))
+
+
+def get_active_token_symbol(blockchain_address: str):
+    """
+    :param blockchain_address:
+    :type blockchain_address:
+    :return:
+    :rtype:
+    """
+    identifier = bytes.fromhex(blockchain_address)
+    key = cache_data_key(identifier=identifier, salt=MetadataPointer.TOKEN_ACTIVE)
+    active_token_symbol = get_cached_data(key)
+    if not active_token_symbol:
+        raise CachedDataNotFoundError('No active token set.')
+    return active_token_symbol
+
+
+def get_cached_token_data(blockchain_address: str, token_symbol: str):
+    """
+    :param blockchain_address:
+    :type blockchain_address:
+    :param token_symbol:
+    :type token_symbol:
+    :return:
+    :rtype:
+    """
+    identifier = [bytes.fromhex(blockchain_address), token_symbol.encode('utf-8')]
+    key = cache_data_key(identifier, MetadataPointer.TOKEN_DATA)
+    logg.debug(f'Retrieving token data for: {token_symbol} at: {key}')
+    token_data = get_cached_data(key)
+    return json.loads(token_data)
 
 
 def get_cached_default_token(chain_str: str) -> Optional[str]:
@@ -49,6 +145,132 @@ def get_default_token_symbol():
             raise SeppukuError(f'Could not retrieve default token for: {chain_str}')
 
 
+def get_cached_token_symbol_list(blockchain_address: str) -> Optional[list]:
+    """
+    :param blockchain_address:
+    :type blockchain_address:
+    :return:
+    :rtype:
+    """
+    key = cache_data_key(identifier=bytes.fromhex(blockchain_address), salt=MetadataPointer.TOKEN_SYMBOLS_LIST)
+    token_symbols_list = get_cached_data(key)
+    if token_symbols_list:
+        return json.loads(token_symbols_list)
+    return token_symbols_list
+
+
+def get_cached_token_data_list(blockchain_address: str) -> Optional[list]:
+    """
+    :param blockchain_address:
+    :type blockchain_address:
+    :return:
+    :rtype:
+    """
+    key = cache_data_key(bytes.fromhex(blockchain_address), MetadataPointer.TOKEN_DATA_LIST)
+    token_data_list = get_cached_data(key)
+    if token_data_list:
+        return json.loads(token_data_list)
+    return token_data_list
+
+
+def handle_token_symbol_list(blockchain_address: str, token_symbol: str):
+    """
+    :param blockchain_address:
+    :type blockchain_address:
+    :param token_symbol:
+    :type token_symbol:
+    :return:
+    :rtype:
+    """
+    token_symbol_list = get_cached_token_symbol_list(blockchain_address)
+    if token_symbol_list:
+        if token_symbol not in token_symbol_list:
+            token_symbol_list.append(token_symbol)
+    else:
+        token_symbol_list = [token_symbol]
+
+    identifier = bytes.fromhex(blockchain_address)
+    key = cache_data_key(identifier=identifier, salt=MetadataPointer.TOKEN_SYMBOLS_LIST)
+    data = json.dumps(token_symbol_list)
+    cache_data(key, data)
+
+
+def hashed_token_proof(token_proof: Union[dict, str]) -> str:
+    """
+    :param token_proof:
+    :type token_proof:
+    :return:
+    :rtype:
+    """
+    if isinstance(token_proof, dict):
+        token_proof = json.dumps(token_proof)
+    logg.debug(f'Hashing token proof: {token_proof}')
+    hash_object = hashlib.new("sha256")
+    hash_object.update(token_proof.encode('utf-8'))
+    return hash_object.digest().hex()
+
+
+def order_account_tokens_list(account_tokens_list: list, identifier: bytes) -> list:
+    """
+    :param account_tokens_list:
+    :type account_tokens_list:
+    :param identifier:
+    :type identifier:
+    :return:
+    :rtype:
+    """
+    ordered_tokens_list = []
+    # get last sent token
+    key = cache_data_key(identifier=identifier, salt=MetadataPointer.TOKEN_LAST_SENT)
+    last_sent_token_symbol = get_cached_data(key)
+
+    # get last received token
+    key = cache_data_key(identifier=identifier, salt=MetadataPointer.TOKEN_LAST_RECEIVED)
+    last_received_token_symbol = get_cached_data(key)
+
+    last_sent_token_data, remaining_accounts_token_list = remove_from_account_tokens_list(account_tokens_list, last_sent_token_symbol)
+    if last_sent_token_data:
+        ordered_tokens_list.append(last_sent_token_data[0])
+
+    last_received_token_data, remaining_accounts_token_list = remove_from_account_tokens_list(remaining_accounts_token_list, last_received_token_symbol)
+    if last_received_token_data:
+        ordered_tokens_list.append(last_received_token_data[0])
+
+    # order the by balance
+    ordered_by_balance = sorted(remaining_accounts_token_list, key=lambda d: d['balance'], reverse=True)
+    return ordered_tokens_list + ordered_by_balance
+
+
+def parse_token_list(account_token_list: list):
+    parsed_token_list = []
+    for i in range(len(account_token_list)):
+        token_symbol = account_token_list[i].get('symbol')
+        token_balance = account_token_list[i].get('balance')
+        token_data_repr = f'{i+1}. {token_symbol} {token_balance}'
+        parsed_token_list.append(token_data_repr)
+    return parsed_token_list
+
+
+def process_token_data(blockchain_address: str, token_symbol: str):
+    """
+
+    :param blockchain_address:
+    :type blockchain_address:
+    :param token_symbol:
+    :type token_symbol:
+    :return:
+    :rtype:
+    """
+    logg.debug(f'Processing token data for token: {token_symbol}')
+    identifier = token_symbol.encode('utf-8')
+    query_token_metadata(identifier=identifier)
+    token_info = query_token_info(identifier=identifier)
+    hashed_token_info = hashed_token_proof(token_proof=token_info)
+    query_token_data(blockchain_address=blockchain_address,
+                     hashed_proofs=[hashed_token_info],
+                     token_symbols=[token_symbol])
+
+
 def query_default_token(chain_str: str):
     """This function synchronously queries cic-eth for the deployed system's default token.
     :param chain_str: Chain name and network id.
@@ -60,3 +282,60 @@ def query_default_token(chain_str: str):
     cic_eth_api = Api(chain_str=chain_str)
     default_token_request_task = cic_eth_api.default_token()
     return default_token_request_task.get()
+
+
+def query_token_data(blockchain_address: str, hashed_proofs: list, token_symbols: list):
+    """"""
+    logg.debug(f'Retrieving token metadata for tokens: {", ".join(token_symbols)}')
+    api = Api(callback_param=blockchain_address,
+              callback_queue='cic-ussd',
+              chain_str=Chain.spec.__str__(),
+              callback_task='cic_ussd.tasks.callback_handler.token_data_callback')
+    api.tokens(token_symbols=token_symbols, proof=hashed_proofs)
+
+
+def remove_from_account_tokens_list(account_tokens_list: list, token_symbol: str):
+    """
+    :param account_tokens_list:
+    :type account_tokens_list:
+    :param token_symbol:
+    :type token_symbol:
+    :return:
+    :rtype:
+    """
+    removed_token_data = []
+    for i in range(len(account_tokens_list)):
+        if account_tokens_list[i]['symbol'] == token_symbol:
+            removed_token_data.append(account_tokens_list[i])
+            del account_tokens_list[i]
+            break
+    return removed_token_data, account_tokens_list
+
+
+def set_active_token(blockchain_address: str, token_symbol: str):
+    """
+    :param blockchain_address:
+    :type blockchain_address:
+    :param token_symbol:
+    :type token_symbol:
+    :return:
+    :rtype:
+    """
+    logg.info(f'Active token set to: {token_symbol}')
+    key = cache_data_key(identifier=bytes.fromhex(blockchain_address), salt=MetadataPointer.TOKEN_ACTIVE)
+    cache_data(key=key, data=token_symbol)
+
+
+def token_list_set(preferred_language: str, token_data_reprs: list):
+    """
+    :param preferred_language:
+    :type preferred_language:
+    :param token_data_reprs:
+    :type token_data_reprs:
+    :return:
+    :rtype:
+    """
+    if not token_data_reprs:
+        return translation_for('helpers.no_tokens_list', preferred_language)
+    return ''.join(f'{token_data_repr}\n' for token_data_repr in token_data_reprs)
+

apps/cic-ussd/cic_ussd/account/transaction.py

@@ -1,7 +1,6 @@
 # standard import
-import decimal
-import json
 import logging
+from math import trunc
 from typing import Dict, Tuple
 
 # external import
@@ -9,8 +8,6 @@ from cic_eth.api import Api
 from sqlalchemy.orm.session import Session
 
 # local import
-from cic_ussd.account.chain import Chain
-from cic_ussd.account.tokens import get_cached_default_token
 from cic_ussd.db.models.account import Account
 from cic_ussd.db.models.base import SessionBase
 from cic_ussd.error import UnknownUssdRecipient
@@ -55,32 +52,32 @@ def aux_transaction_data(preferred_language: str, transaction: dict) -> dict:
     return transaction
 
 
-def from_wei(value: int) -> float:
+def from_wei(decimals: int, value: int) -> float:
     """This function converts values in Wei to a token in the cic network.
+    :param decimals: The decimals required for wei values.
+    :type decimals: int
     :param value: Value in Wei
     :type value: int
     :return: SRF equivalent of value in Wei
     :rtype: float
     """
-    cached_token_data = json.loads(get_cached_default_token(Chain.spec.__str__()))
+    value = float(value) / (10**decimals)
-    token_decimals: int = cached_token_data.get('decimals')
-    value = float(value) / (10**token_decimals)
     return truncate(value=value, decimals=2)
 
 
-def to_wei(value: int) -> int:
+def to_wei(decimals: int, value: int) -> int:
     """This functions converts values from a token in the cic network to Wei.
+    :param decimals: The decimals required for wei values.
+    :type decimals: int
     :param value: Value in SRF
     :type value: int
     :return: Wei equivalent of value in SRF
     :rtype: int
     """
-    cached_token_data = json.loads(get_cached_default_token(Chain.spec.__str__()))
+    return int(value * (10**decimals))
-    token_decimals: int = cached_token_data.get('decimals')
-    return int(value * (10**token_decimals))
 
 
-def truncate(value: float, decimals: int):
+def truncate(value: float, decimals: int) -> float:
     """This function truncates a value to a specified number of decimals places.
     :param value: The value to be truncated.
     :type value: float
@@ -89,9 +86,8 @@ def truncate(value: float, decimals: int):
     :return: The truncated value.
     :rtype: int
     """
-    decimal.getcontext().rounding = decimal.ROUND_DOWN
+    stepper = 10.0**decimals
-    contextualized_value = decimal.Decimal(value)
+    return trunc(stepper*value) / stepper
-    return round(contextualized_value, decimals)
 
 
 def transaction_actors(transaction: dict) -> Tuple[Dict, Dict]:
@@ -104,14 +100,17 @@ def transaction_actors(transaction: dict) -> Tuple[Dict, Dict]:
     """
     destination_token_symbol = transaction.get('destination_token_symbol')
     destination_token_value = transaction.get('destination_token_value') or transaction.get('to_value')
+    destination_token_decimals = transaction.get('destination_token_decimals')
     recipient_blockchain_address = transaction.get('recipient')
     sender_blockchain_address = transaction.get('sender')
     source_token_symbol = transaction.get('source_token_symbol')
     source_token_value = transaction.get('source_token_value') or transaction.get('from_value')
+    source_token_decimals = transaction.get('source_token_decimals')
 
     recipient_transaction_data = {
         "token_symbol": destination_token_symbol,
         "token_value": destination_token_value,
+        "token_decimals": destination_token_decimals,
         "blockchain_address": recipient_blockchain_address,
         "role": "recipient",
     }
@@ -119,6 +118,7 @@ def transaction_actors(transaction: dict) -> Tuple[Dict, Dict]:
         "blockchain_address": sender_blockchain_address,
         "token_symbol": source_token_symbol,
         "token_value": source_token_value,
+        "token_decimals": source_token_decimals,
         "role": "sender",
     }
     return recipient_transaction_data, sender_transaction_data
@@ -166,14 +166,16 @@ class OutgoingTransaction:
         self.from_address = from_address
         self.to_address = to_address
 
-    def transfer(self, amount: int, token_symbol: str):
+    def transfer(self, amount: int, decimals: int, token_symbol: str):
         """This function initiates standard transfers between one account to another
         :param amount: The amount of tokens to be sent
         :type amount: int
+        :param decimals: The decimals for the token being transferred.
+        :type decimals: int
         :param token_symbol: ERC20 token symbol of token to send
         :type token_symbol: str
         """
         self.cic_eth_api.transfer(from_address=self.from_address,
                                   to_address=self.to_address,
-                                  value=to_wei(value=amount),
+                                  value=to_wei(decimals=decimals, value=amount),
                                   token_symbol=token_symbol)

apps/cic-ussd/cic_ussd/cache.py

@@ -1,12 +1,13 @@
 # standard imports
 import hashlib
 import logging
+from typing import Union
 
 # external imports
 from cic_types.condiments import MetadataPointer
 from redis import Redis
 
-logg = logging.getLogger()
+logg = logging.getLogger(__file__)
 
 
 class Cache:
@@ -39,7 +40,7 @@ def get_cached_data(key: str):
     return cache.get(name=key)
 
 
-def cache_data_key(identifier: bytes, salt: MetadataPointer):
+def cache_data_key(identifier: Union[list, bytes], salt: MetadataPointer):
     """
     :param identifier:
     :type identifier:
@@ -49,6 +50,10 @@ def cache_data_key(identifier: bytes, salt: MetadataPointer):
     :rtype:
     """
     hash_object = hashlib.new("sha256")
-    hash_object.update(identifier)
+    if isinstance(identifier, list):
+        for identity in identifier:
+            hash_object.update(identity)
+    else:
+        hash_object.update(identifier)
     hash_object.update(salt.value.encode(encoding="utf-8"))
     return hash_object.digest().hex()

apps/cic-ussd/cic_ussd/db/ussd_menu.json

@@ -287,7 +287,36 @@
             "display_key": "ussd.kenya.dob_edit_pin_authorization",
             "name": "dob_edit_pin_authorization",
             "parent": "metadata_management"
+        },
+        "49": {
+            "description": "Menu to display first set of tokens in the account's token list.",
+            "display_key": "ussd.kenya.first_account_tokens_set",
+            "name": "first_account_tokens_set",
+            "parent": null
+        },
+        "50": {
+            "description": "Menu to display middle set of tokens in the account's token list.",
+            "display_key": "ussd.kenya.middle_account_tokens_set",
+            "name": "middle_account_tokens_set",
+            "parent": null
+        },
+        "51": {
+            "description": "Menu to display last set of tokens in the account's token list.",
+            "display_key": "ussd.kenya.last_account_tokens_set",
+            "name": "last_account_tokens_set",
+            "parent": null
+        },
+        "52": {
+            "description": "Pin entry menu for setting an active token.",
+            "display_key": "ussd.kenya.token_selection_pin_authorization",
+            "name": "token_selection_pin_authorization",
+            "parent": null
+        },
+        "53": {
+            "description": "Exit following a successful active token setting.",
+            "display_key": "ussd.kenya.exit_successful_token_selection",
+            "name": "exit_successful_token_selection",
+            "parent": null
         }
-
     }
 }

apps/cic-ussd/cic_ussd/metadata/base.py

@@ -13,7 +13,7 @@ logg = logging.getLogger(__file__)
 
 
 class UssdMetadataHandler(MetadataRequestsHandler):
-    def __init__(self, cic_type: MetadataPointer, identifier: bytes):
+    def __init__(self, identifier: bytes, cic_type: MetadataPointer = None):
         super().__init__(cic_type, identifier)
 
     def cache_metadata(self, data: str):

apps/cic-ussd/cic_ussd/metadata/tokens.py

@@ -0,0 +1,54 @@
+# standard imports
+from typing import Dict, Optional
+
+# external imports
+import json
+
+from cic_types.condiments import MetadataPointer
+
+# local imports
+from .base import UssdMetadataHandler
+from cic_ussd.cache import cache_data
+from cic_ussd.error import MetadataNotFoundError
+
+
+class TokenMetadata(UssdMetadataHandler):
+    def __init__(self, identifier: bytes, **kwargs):
+        super(TokenMetadata, self).__init__(identifier=identifier, **kwargs)
+
+
+def token_metadata_handler(metadata_client: TokenMetadata) -> Optional[Dict]:
+    """
+    :param metadata_client:
+    :type metadata_client:
+    :return:
+    :rtype:
+    """
+    result = metadata_client.query()
+    token_metadata = result.json()
+    if not token_metadata:
+        raise MetadataNotFoundError(f'No metadata found at: {metadata_client.metadata_pointer} for: {metadata_client.identifier.decode("utf-8")}')
+    cache_data(metadata_client.metadata_pointer, json.dumps(token_metadata))
+    return token_metadata
+
+
+def query_token_metadata(identifier: bytes):
+    """
+    :param identifier:
+    :type identifier:
+    :return:
+    :rtype:
+    """
+    token_metadata_client = TokenMetadata(identifier=identifier, cic_type=MetadataPointer.TOKEN_META_SYMBOL)
+    return token_metadata_handler(token_metadata_client)
+
+
+def query_token_info(identifier: bytes):
+    """
+    :param identifier:
+    :type identifier:
+    :return:
+    :rtype:
+    """
+    token_info_client = TokenMetadata(identifier=identifier, cic_type=MetadataPointer.TOKEN_PROOF_SYMBOL)
+    return token_metadata_handler(token_info_client)

apps/cic-ussd/cic_ussd/processor/menu.py

@@ -9,6 +9,7 @@ from cic_types.condiments import MetadataPointer
 
 # local imports
 from cic_ussd.account.balance import (calculate_available_balance,
+                                      get_account_tokens_balance,
                                       get_adjusted_balance,
                                       get_balances,
                                       get_cached_adjusted_balance,
@@ -21,13 +22,20 @@ from cic_ussd.account.statement import (
     query_statement,
     statement_transaction_set
 )
-from cic_ussd.account.tokens import get_default_token_symbol
+from cic_ussd.account.tokens import (create_account_tokens_list,
+                                     get_active_token_symbol,
+                                     get_cached_token_data,
+                                     get_cached_token_symbol_list,
+                                     get_cached_token_data_list,
+                                     parse_token_list,
+                                     token_list_set)
 from cic_ussd.account.transaction import from_wei, to_wei
 from cic_ussd.cache import cache_data_key, cache_data
 from cic_ussd.db.models.account import Account
 from cic_ussd.metadata import PersonMetadata
 from cic_ussd.phone_number import Support
 from cic_ussd.processor.util import parse_person_metadata
+from cic_ussd.session.ussd_session import save_session_data
 from cic_ussd.translation import translation_for
 from sqlalchemy.orm.session import Session
 
@@ -48,22 +56,27 @@ class MenuProcessor:
         :return:
         :rtype:
         """
-        available_balance = get_cached_available_balance(self.account.blockchain_address)
+
         adjusted_balance = get_cached_adjusted_balance(self.identifier)
-        token_symbol = get_default_token_symbol()
+        token_symbol = get_active_token_symbol(self.account.blockchain_address)
+        token_data = get_cached_token_data(self.account.blockchain_address, token_symbol)
         preferred_language = get_cached_preferred_language(self.account.blockchain_address)
         if not preferred_language:
             preferred_language = i18n.config.get('fallback')
         with_available_balance = f'{self.display_key}.available_balance'
         with_fees = f'{self.display_key}.with_fees'
+        decimals = token_data.get('decimals')
+        available_balance = get_cached_available_balance(decimals, [self.identifier, token_symbol.encode('utf-8')])
         if not adjusted_balance:
             return translation_for(key=with_available_balance,
                                    preferred_language=preferred_language,
                                    available_balance=available_balance,
                                    token_symbol=token_symbol)
+
         adjusted_balance = json.loads(adjusted_balance)
-        tax_wei = to_wei(int(available_balance)) - int(adjusted_balance)
+
-        tax = from_wei(int(tax_wei))
+        tax_wei = to_wei(decimals, int(available_balance)) - int(adjusted_balance)
+        tax = from_wei(decimals, int(tax_wei))
         return translation_for(key=with_fees,
                                preferred_language=preferred_language,
                                available_balance=available_balance,
@@ -76,21 +89,25 @@ class MenuProcessor:
         :rtype:
         """
         cached_statement = get_cached_statement(self.account.blockchain_address)
-        statement = json.loads(cached_statement)
+        transaction_sets = []
-        statement_transactions = parse_statement_transactions(statement)
+        if cached_statement:
-        transaction_sets = [statement_transactions[tx:tx + 3] for tx in range(0, len(statement_transactions), 3)]
+            statement = json.loads(cached_statement)
+            statement_transactions = parse_statement_transactions(statement)
+            transaction_sets = [statement_transactions[tx:tx + 3] for tx in range(0, len(statement_transactions), 3)]
         preferred_language = get_cached_preferred_language(self.account.blockchain_address)
         if not preferred_language:
             preferred_language = i18n.config.get('fallback')
-        first_transaction_set = []
+        no_transaction_history = statement_transaction_set(preferred_language, transaction_sets)
-        middle_transaction_set = []
+        first_transaction_set = no_transaction_history
-        last_transaction_set = []
+        middle_transaction_set = no_transaction_history
+        last_transaction_set = no_transaction_history
         if transaction_sets:
             first_transaction_set = statement_transaction_set(preferred_language, transaction_sets[0])
         if len(transaction_sets) >= 2:
             middle_transaction_set = statement_transaction_set(preferred_language, transaction_sets[1])
         if len(transaction_sets) >= 3:
             last_transaction_set = statement_transaction_set(preferred_language, transaction_sets[2])
+
         if self.display_key == 'ussd.kenya.first_transaction_set':
             return translation_for(
                 self.display_key, preferred_language, first_transaction_set=first_transaction_set
@@ -104,7 +121,42 @@ class MenuProcessor:
                 self.display_key, preferred_language, last_transaction_set=last_transaction_set
             )
 
-    def help(self):
+    def account_tokens(self) -> str:
+        cached_token_data_list = get_cached_token_data_list(self.account.blockchain_address)
+        token_data_list = parse_token_list(cached_token_data_list)
+        token_list_sets = [token_data_list[tds:tds + 3] for tds in range(0, len(token_data_list), 3)]
+        preferred_language = get_cached_preferred_language(self.account.blockchain_address)
+        if not preferred_language:
+            preferred_language = i18n.config.get('fallback')
+        no_token_list = token_list_set(preferred_language, [])
+        first_account_tokens_set = no_token_list
+        middle_account_tokens_set = no_token_list
+        last_account_tokens_set = no_token_list
+        if token_list_sets:
+            data = {
+                'account_tokens_list': cached_token_data_list
+            }
+            save_session_data(data=data, queue='cic-ussd', session=self.session, ussd_session=self.ussd_session)
+            first_account_tokens_set = token_list_set(preferred_language, token_list_sets[0])
+
+        if len(token_list_sets) >= 2:
+            middle_account_tokens_set = token_list_set(preferred_language, token_list_sets[1])
+        if len(token_list_sets) >= 3:
+            last_account_tokens_set = token_list_set(preferred_language, token_list_sets[2])
+        if self.display_key == 'ussd.kenya.first_account_tokens_set':
+            return translation_for(
+                self.display_key, preferred_language, first_account_tokens_set=first_account_tokens_set
+            )
+        if self.display_key == 'ussd.kenya.middle_account_tokens_set':
+            return translation_for(
+                self.display_key, preferred_language, middle_account_tokens_set=middle_account_tokens_set
+            )
+        if self.display_key == 'ussd.kenya.last_account_tokens_set':
+            return translation_for(
+                self.display_key, preferred_language, last_account_tokens_set=last_account_tokens_set
+            )
+
+    def help(self) -> str:
         preferred_language = get_cached_preferred_language(self.account.blockchain_address)
         if not preferred_language:
             preferred_language = i18n.config.get('fallback')
@@ -161,24 +213,28 @@ class MenuProcessor:
         :rtype:
         """
         chain_str = Chain.spec.__str__()
-        token_symbol = get_default_token_symbol()
+        token_symbol = get_active_token_symbol(self.account.blockchain_address)
+        token_data = get_cached_token_data(self.account.blockchain_address, token_symbol)
+        decimals = token_data.get('decimals')
         blockchain_address = self.account.blockchain_address
         balances = get_balances(blockchain_address, chain_str, token_symbol, False)[0]
-        key = cache_data_key(self.identifier, MetadataPointer.BALANCES)
+        key = cache_data_key([self.identifier, token_symbol.encode('utf-8')], MetadataPointer.BALANCES)
         cache_data(key, json.dumps(balances))
-        available_balance = calculate_available_balance(balances)
+        available_balance = calculate_available_balance(balances, decimals)
         now = datetime.now()
         if (now - self.account.created).days >= 30:
             if available_balance <= 0:
                 logg.info(f'Not retrieving adjusted balance, available balance: {available_balance} is insufficient.')
             else:
                 timestamp = int((now - timedelta(30)).timestamp())
-                adjusted_balance = get_adjusted_balance(to_wei(int(available_balance)), chain_str, timestamp, token_symbol)
+                adjusted_balance = get_adjusted_balance(to_wei(decimals, int(available_balance)), chain_str, timestamp, token_symbol)
-                key = cache_data_key(self.identifier, MetadataPointer.BALANCES_ADJUSTED)
+                key = cache_data_key([self.identifier, token_symbol.encode('utf-8')], MetadataPointer.BALANCES_ADJUSTED)
                 cache_data(key, json.dumps(adjusted_balance))
 
         query_statement(blockchain_address)
-
+        token_symbols_list = get_cached_token_symbol_list(blockchain_address)
+        get_account_tokens_balance(blockchain_address, chain_str, token_symbols_list)
+        create_account_tokens_list(blockchain_address)
         preferred_language = get_cached_preferred_language(self.account.blockchain_address)
         if not preferred_language:
             preferred_language = i18n.config.get('fallback')
@@ -186,6 +242,20 @@ class MenuProcessor:
             self.display_key, preferred_language, account_balance=available_balance, account_token_name=token_symbol
         )
 
+    def token_selection_pin_authorization(self) -> str:
+        """
+        :return:
+        :rtype:
+        """
+        selected_token = self.ussd_session.get('data').get('selected_token')
+        token_name = selected_token.get('name')
+        token_symbol = selected_token.get('symbol')
+        token_issuer = selected_token.get('issuer')
+        token_contact = selected_token.get('contact')
+        token_location = selected_token.get('location')
+        token_data = f'{token_name} ({token_symbol})\n{token_issuer}\n{token_contact}\n{token_location}\n'
+        return self.pin_authorization(token_data=token_data)
+
     def transaction_pin_authorization(self) -> str:
         """
         :return:
@@ -195,12 +265,14 @@ class MenuProcessor:
         recipient = Account.get_by_phone_number(recipient_phone_number, self.session)
         tx_recipient_information = recipient.standard_metadata_id()
         tx_sender_information = self.account.standard_metadata_id()
-        token_symbol = get_default_token_symbol()
+        token_symbol = get_active_token_symbol(self.account.blockchain_address)
+        token_data = get_cached_token_data(self.account.blockchain_address, token_symbol)
         user_input = self.ussd_session.get('data').get('transaction_amount')
-        transaction_amount = to_wei(value=int(user_input))
+        decimals = token_data.get('decimals')
+        transaction_amount = to_wei(decimals=decimals, value=int(user_input))
         return self.pin_authorization(
             recipient_information=tx_recipient_information,
-            transaction_amount=from_wei(transaction_amount),
+            transaction_amount=from_wei(decimals, transaction_amount),
             token_symbol=token_symbol,
             sender_information=tx_sender_information
         )
@@ -210,21 +282,23 @@ class MenuProcessor:
         :return:
         :rtype:
         """
-        available_balance = get_cached_available_balance(self.account.blockchain_address)
         preferred_language = get_cached_preferred_language(self.account.blockchain_address)
         if not preferred_language:
             preferred_language = i18n.config.get('fallback')
         session_data = self.ussd_session.get('data')
+        token_symbol = get_active_token_symbol(self.account.blockchain_address)
+        token_data = get_cached_token_data(self.account.blockchain_address, token_symbol)
+        decimals = token_data.get('decimals')
+        available_balance = get_cached_available_balance(decimals, [self.identifier, token_symbol.encode('utf-8')])
         transaction_amount = session_data.get('transaction_amount')
-        transaction_amount = to_wei(value=int(transaction_amount))
+        transaction_amount = to_wei(decimals=decimals, value=int(transaction_amount))
-        token_symbol = get_default_token_symbol()
         recipient_phone_number = self.ussd_session.get('data').get('recipient_phone_number')
         recipient = Account.get_by_phone_number(recipient_phone_number, self.session)
         tx_recipient_information = recipient.standard_metadata_id()
         return translation_for(
             self.display_key,
             preferred_language,
-            amount=from_wei(transaction_amount),
+            amount=from_wei(decimals, transaction_amount),
             token_symbol=token_symbol,
             recipient_information=tx_recipient_information,
             token_balance=available_balance
@@ -242,6 +316,14 @@ class MenuProcessor:
             preferred_language = i18n.config.get('fallback')
         return translation_for('ussd.kenya.exit_pin_blocked', preferred_language, support_phone=Support.phone_number)
 
+    def exit_successful_token_selection(self) -> str:
+        selected_token = self.ussd_session.get('data').get('selected_token')
+        token_symbol = selected_token.get('symbol')
+        preferred_language = get_cached_preferred_language(self.account.blockchain_address)
+        if not preferred_language:
+            preferred_language = i18n.config.get('fallback')
+        return translation_for(self.display_key,preferred_language,token_symbol=token_symbol)
+
     def exit_successful_transaction(self):
         """
         :return:
@@ -251,8 +333,10 @@ class MenuProcessor:
         preferred_language = get_cached_preferred_language(self.account.blockchain_address)
         if not preferred_language:
             preferred_language = i18n.config.get('fallback')
-        transaction_amount = to_wei(amount)
+        token_symbol = get_active_token_symbol(self.account.blockchain_address)
-        token_symbol = get_default_token_symbol()
+        token_data = get_cached_token_data(self.account.blockchain_address, token_symbol)
+        decimals = token_data.get('decimals')
+        transaction_amount = to_wei(decimals, amount)
         recipient_phone_number = self.ussd_session.get('data').get('recipient_phone_number')
         recipient = Account.get_by_phone_number(phone_number=recipient_phone_number, session=self.session)
         tx_recipient_information = recipient.standard_metadata_id()
@@ -260,7 +344,7 @@ class MenuProcessor:
         return translation_for(
             self.display_key,
             preferred_language,
-            transaction_amount=from_wei(transaction_amount),
+            transaction_amount=from_wei(decimals, transaction_amount),
             token_symbol=token_symbol,
             recipient_information=tx_recipient_information,
             sender_information=tx_sender_information
@@ -294,6 +378,10 @@ def response(account: Account, display_key: str, menu_name: str, session: Sessio
     if menu_name == 'transaction_pin_authorization':
         return menu_processor.transaction_pin_authorization()
 
+    if menu_name == 'token_selection_pin_authorization':
+        logg.debug(f'RESPONSE IS: {menu_processor.token_selection_pin_authorization()}')
+        return menu_processor.token_selection_pin_authorization()
+
     if menu_name == 'exit_insufficient_balance':
         return menu_processor.exit_insufficient_balance()
 
@@ -312,6 +400,9 @@ def response(account: Account, display_key: str, menu_name: str, session: Sessio
     if 'transaction_set' in menu_name:
         return menu_processor.account_statement()
 
+    if 'account_tokens_set' in menu_name:
+        return menu_processor.account_tokens()
+
     if menu_name == 'display_user_metadata':
         return menu_processor.person_metadata()
 
@@ -321,6 +412,9 @@ def response(account: Account, display_key: str, menu_name: str, session: Sessio
     if menu_name == 'exit_pin_blocked':
         return menu_processor.exit_pin_blocked()
 
+    if menu_name == 'exit_successful_token_selection':
+        return menu_processor.exit_successful_token_selection()
+
     preferred_language = get_cached_preferred_language(account.blockchain_address)
 
     return translation_for(display_key, preferred_language)

apps/cic-ussd/cic_ussd/processor/util.py

@@ -1,15 +1,22 @@
 # standard imports
 import datetime
 import json
+import logging
+import time
+from typing import Union
 
 # external imports
+from cic_types.condiments import MetadataPointer
 from cic_types.models.person import get_contact_data_from_vcard
 from tinydb.table import Document
 
 # local imports
+from cic_ussd.cache import cache_data_key, get_cached_data
 from cic_ussd.menu.ussd_menu import UssdMenu
 from cic_ussd.translation import translation_for
 
+logg = logging.getLogger(__file__)
+
 
 def latest_input(user_input: str) -> str:
     """
@@ -76,3 +83,66 @@ def resume_last_ussd_session(last_state: str) -> Document:
     if last_state in non_reusable_states:
         return UssdMenu.find_by_name('start')
     return UssdMenu.find_by_name(last_state)
+
+
+def wait_for_cache(identifier: Union[list, bytes], resource_name: str, salt: MetadataPointer, interval: int = 1, max_retry: int = 5):
+    """
+    :param identifier:
+    :type identifier:
+    :param interval:
+    :type interval:
+    :param resource_name:
+    :type resource_name:
+    :param salt:
+    :type salt:
+    :param max_retry:
+    :type max_retry:
+    :return:
+    :rtype:
+    """
+    key = cache_data_key(identifier=identifier, salt=salt)
+    resource = get_cached_data(key)
+    counter = 0
+    while resource is None:
+        logg.debug(f'Waiting for: {resource_name} at: {key}. Checking after: {interval} ...')
+        time.sleep(interval)
+        counter += 1
+        resource = get_cached_data(key)
+        if resource is not None:
+            logg.debug(f'{resource_name} now available.')
+            break
+        else:
+            if counter == max_retry:
+                logg.debug(f'Could not find: {resource_name} within: {max_retry}')
+                break
+
+
+def wait_for_session_data(resource_name: str, session_data_key: str, ussd_session: dict, interval: int = 1, max_retry: int = 5):
+    """
+    :param interval:
+    :type interval:
+    :param resource_name:
+    :type resource_name:
+    :param session_data_key:
+    :type session_data_key:
+    :param ussd_session:
+    :type ussd_session:
+    :param max_retry:
+    :type max_retry:
+    :return:
+    :rtype:
+    """
+    session_data = ussd_session.get('data').get(session_data_key)
+    counter = 0
+    while session_data is None:
+        logg.debug(f'Waiting for: {resource_name}. Checking after: {interval} ...')
+        time.sleep(interval)
+        counter += 1
+        session_data = ussd_session.get('data').get(session_data_key)
+        if session_data is not None:
+            logg.debug(f'{resource_name} now available.')
+            break
+        else:
+            if counter == max_retry:
+                logg.debug(f'Could not find: {resource_name} within: {max_retry}')
+                break

apps/cic-ussd/cic_ussd/runnable/client.py

@@ -63,7 +63,6 @@ elif ssl == 0:
 else:
     ssl = True
 
-valid_service_codes = config.get('USSD_SERVICE_CODE').split(",")
 def main():
 
     # TODO: improve url building 
@@ -79,7 +78,7 @@ def main():
     session = uuid.uuid4().hex
     data = {
             'sessionId': session,
-            'serviceCode': valid_service_codes[0],
+            'serviceCode': config.get('USSD_SERVICE_CODE'),
             'phoneNumber': args.phone,
             'text': "",
         }

apps/cic-ussd/cic_ussd/session/ussd_session.py

@@ -13,7 +13,7 @@ from cic_ussd.cache import Cache
 from cic_ussd.db.models.base import SessionBase
 from cic_ussd.db.models.ussd_session import UssdSession as DbUssdSession
 
-logg = logging.getLogger()
+logg = logging.getLogger(__file__)
 
 
 class UssdSession:
@@ -239,11 +239,16 @@ def save_session_data(queue: Optional[str], session: Session, data: dict, ussd_s
     :param ussd_session: A ussd session passed to the state machine.
     :type ussd_session: UssdSession
     """
+    logg.debug(f'Saving: {data} session data to: {ussd_session}')
     cache = Cache.store
     external_session_id = ussd_session.get('external_session_id')
     existing_session_data = ussd_session.get('data')
     if existing_session_data:
-        data = {**existing_session_data, **data}
+        # replace session data entry
+        keys = data.keys()
+        for key in keys:
+            existing_session_data[key] = data[key]
+        data = existing_session_data
     in_redis_ussd_session = cache.get(external_session_id)
     in_redis_ussd_session = json.loads(in_redis_ussd_session)
     create_or_update_session(

apps/cic-ussd/cic_ussd/state_machine/logic/menu.py

@@ -93,6 +93,30 @@ def menu_zero_zero_selected(state_machine_data: Tuple[str, dict, Account, Sessio
     return user_input == '00'
 
 
+def menu_eleven_selected(state_machine_data: Tuple[str, dict, Account, Session]) -> bool:
+    """
+    This function checks that user input matches a string with value '11'
+    :param state_machine_data: A tuple containing user input, a ussd session and user object.
+    :type state_machine_data: tuple
+    :return: A user input's match with '99'
+    :rtype: bool
+    """
+    user_input, ussd_session, account, session = state_machine_data
+    return user_input == '11'
+
+
+def menu_twenty_two_selected(state_machine_data: Tuple[str, dict, Account, Session]) -> bool:
+    """
+    This function checks that user input matches a string with value '22'
+    :param state_machine_data: A tuple containing user input, a ussd session and user object.
+    :type state_machine_data: tuple
+    :return: A user input's match with '99'
+    :rtype: bool
+    """
+    user_input, ussd_session, account, session = state_machine_data
+    return user_input == '22'
+
+
 def menu_ninety_nine_selected(state_machine_data: Tuple[str, dict, Account, Session]) -> bool:
     """
     This function checks that user input matches a string with value '99'

apps/cic-ussd/cic_ussd/state_machine/logic/pin.py

@@ -3,7 +3,6 @@ user's pin.
 """
 
 # standard imports
-import json
 import logging
 import re
 from typing import Tuple
@@ -16,6 +15,7 @@ from cic_ussd.db.models.account import Account
 from cic_ussd.db.models.base import SessionBase
 from cic_ussd.db.enum import AccountStatus
 from cic_ussd.encoder import create_password_hash, check_password_hash
+from cic_ussd.processor.util import wait_for_session_data
 from cic_ussd.session.ussd_session import create_or_update_session, persist_ussd_session
 
 
@@ -31,11 +31,8 @@ def is_valid_pin(state_machine_data: Tuple[str, dict, Account, Session]) -> bool
     :rtype: bool
     """
     user_input, ussd_session, account, session = state_machine_data
-    pin_is_valid = False
     matcher = r'^\d{4}$'
-    if re.match(matcher, user_input):
+    return bool(re.match(matcher, user_input))
-        pin_is_valid = True
-    return pin_is_valid
 
 
 def is_authorized_pin(state_machine_data: Tuple[str, dict, Account, Session]) -> bool:
@@ -68,7 +65,7 @@ def save_initial_pin_to_session_data(state_machine_data: Tuple[str, dict, Accoun
     :param state_machine_data: A tuple containing user input, a ussd session and user object.
     :type state_machine_data: tuple
     """
-    user_input, ussd_session, user, session = state_machine_data
+    user_input, ussd_session, account, session = state_machine_data
     initial_pin = create_password_hash(user_input)
     if ussd_session.get('data'):
         data = ussd_session.get('data')
@@ -97,7 +94,8 @@ def pins_match(state_machine_data: Tuple[str, dict, Account, Session]) -> bool:
     :return: A match between two pin values.
     :rtype: bool
     """
-    user_input, ussd_session, user, session = state_machine_data
+    user_input, ussd_session, account, session = state_machine_data
+    wait_for_session_data('Initial pin', session_data_key='initial_pin', ussd_session=ussd_session)
     initial_pin = ussd_session.get('data').get('initial_pin')
     return check_password_hash(user_input, initial_pin)
 
@@ -107,11 +105,12 @@ def complete_pin_change(state_machine_data: Tuple[str, dict, Account, Session]):
     :param state_machine_data: A tuple containing user input, a ussd session and user object.
     :type state_machine_data: tuple
     """
-    user_input, ussd_session, user, session = state_machine_data
+    user_input, ussd_session, account, session = state_machine_data
     session = SessionBase.bind_session(session=session)
+    wait_for_session_data('Initial pin', session_data_key='initial_pin', ussd_session=ussd_session)
     password_hash = ussd_session.get('data').get('initial_pin')
-    user.password_hash = password_hash
+    account.password_hash = password_hash
-    session.add(user)
+    session.add(account)
     session.flush()
     SessionBase.release_session(session=session)
 
@@ -134,6 +133,6 @@ def is_valid_new_pin(state_machine_data: Tuple[str, dict, Account, Session]) ->
     :return: A match between two pin values.
     :rtype: bool
     """
-    user_input, ussd_session, user, session = state_machine_data
+    user_input, ussd_session, account, session = state_machine_data
-    is_old_pin = user.verify_password(password=user_input)
+    is_old_pin = account.verify_password(password=user_input)
     return is_valid_pin(state_machine_data=state_machine_data) and not is_old_pin

apps/cic-ussd/cic_ussd/state_machine/logic/sms.py

@@ -6,7 +6,7 @@ from sqlalchemy.orm.session import Session
 
 # local imports
 from cic_ussd.account.metadata import get_cached_preferred_language
-from cic_ussd.account.tokens import get_default_token_symbol
+from cic_ussd.account.tokens import get_active_token_symbol
 from cic_ussd.db.models.account import Account
 from cic_ussd.notifications import Notifier
 from cic_ussd.phone_number import Support
@@ -18,7 +18,7 @@ def upsell_unregistered_recipient(state_machine_data: Tuple[str, dict, Account,
     notifier = Notifier()
     phone_number = ussd_session.get('data')['recipient_phone_number']
     preferred_language = get_cached_preferred_language(account.blockchain_address)
-    token_symbol = get_default_token_symbol()
+    token_symbol = get_active_token_symbol(account.blockchain_address)
     tx_sender_information = account.standard_metadata_id()
     notifier.send_sms_notification('sms.upsell_unregistered_recipient',
                                    phone_number,

apps/cic-ussd/cic_ussd/state_machine/logic/tokens.py

@@ -0,0 +1,69 @@
+# standard imports
+from typing import Tuple
+
+# external imports
+from sqlalchemy.orm.session import Session
+
+# local imports
+from cic_ussd.account.tokens import set_active_token
+from cic_ussd.db.models.account import Account
+from cic_ussd.processor.util import wait_for_session_data
+from cic_ussd.session.ussd_session import save_session_data
+
+
+def is_valid_token_selection(state_machine_data: Tuple[str, dict, Account, Session]):
+    """
+    :param state_machine_data:
+    :type state_machine_data:
+    :return:
+    :rtype:
+    """
+    user_input, ussd_session, account, session = state_machine_data
+    session_data = ussd_session.get('data')
+    account_tokens_list = session_data.get('account_tokens_list')
+    if not account_tokens_list:
+        wait_for_session_data('Account token list', session_data_key='account_tokens_list', ussd_session=ussd_session)
+    if user_input not in ['00', '22']:
+        try:
+            user_input = int(user_input)
+            return user_input <= len(account_tokens_list)
+        except ValueError:
+            user_input = user_input.upper()
+            return any(token_data['symbol'] == user_input for token_data in account_tokens_list)
+
+
+def process_token_selection(state_machine_data: Tuple[str, dict, Account, Session]):
+    """
+    :param state_machine_data:
+    :type state_machine_data:
+    :return:
+    :rtype:
+    """
+    user_input, ussd_session, account, session = state_machine_data
+    account_tokens_list = ussd_session.get('data').get('account_tokens_list')
+    try:
+        user_input = int(user_input)
+        selected_token = account_tokens_list[user_input-1]
+    except ValueError:
+        user_input = user_input.upper()
+        selected_token = next(token_data for token_data in account_tokens_list if token_data['symbol'] == user_input)
+    data = {
+        'selected_token': selected_token
+    }
+    save_session_data(queue='cic-ussd', session=session, data=data, ussd_session=ussd_session)
+
+
+def set_selected_active_token(state_machine_data: Tuple[str, dict, Account, Session]):
+    """
+    :param state_machine_data:
+    :type state_machine_data:
+    :return:
+    :rtype:
+    """
+    user_input, ussd_session, account, session = state_machine_data
+    wait_for_session_data(resource_name='Selected token', session_data_key='selected_token', ussd_session=ussd_session)
+    selected_token = ussd_session.get('data').get('selected_token')
+    token_symbol = selected_token.get('symbol')
+    set_active_token(blockchain_address=account.blockchain_address, token_symbol=token_symbol)
+
+

apps/cic-ussd/cic_ussd/state_machine/logic/transaction.py

@@ -5,18 +5,17 @@ from typing import Tuple
 # third party imports
 import celery
 from phonenumbers.phonenumberutil import NumberParseException
+from sqlalchemy.orm.session import Session
 
 # local imports
 from cic_ussd.account.balance import get_cached_available_balance
 from cic_ussd.account.chain import Chain
-from cic_ussd.account.tokens import get_default_token_symbol
+from cic_ussd.account.tokens import get_active_token_symbol, get_cached_token_data
 from cic_ussd.account.transaction import OutgoingTransaction
-from cic_ussd.db.enum import AccountStatus
 from cic_ussd.db.models.account import Account
-from cic_ussd.db.models.base import SessionBase
 from cic_ussd.phone_number import process_phone_number, E164Format
 from cic_ussd.session.ussd_session import save_session_data
-from sqlalchemy.orm.session import Session
+
 
 logg = logging.getLogger(__file__)
 
@@ -63,7 +62,11 @@ def has_sufficient_balance(state_machine_data: Tuple[str, dict, Account, Session
     :rtype: bool
     """
     user_input, ussd_session, account, session = state_machine_data
-    return int(user_input) <= get_cached_available_balance(account.blockchain_address)
+    identifier = bytes.fromhex(account.blockchain_address)
+    token_symbol = get_active_token_symbol(account.blockchain_address)
+    token_data = get_cached_token_data(account.blockchain_address, token_symbol)
+    decimals = token_data.get('decimals')
+    return int(user_input) <= get_cached_available_balance(decimals, [identifier, token_symbol.encode('utf-8')])
 
 
 def save_recipient_phone_to_session_data(state_machine_data: Tuple[str, dict, Account, Session]):
@@ -122,9 +125,10 @@ def process_transaction_request(state_machine_data: Tuple[str, dict, Account, Se
     to_address = recipient.blockchain_address
     from_address = account.blockchain_address
     amount = int(ussd_session.get('data').get('transaction_amount'))
-    token_symbol = get_default_token_symbol()
+    token_symbol = get_active_token_symbol(account.blockchain_address)
-
+    token_data = get_cached_token_data(account.blockchain_address, token_symbol)
+    decimals = token_data.get('decimals')
     outgoing_tx_processor = OutgoingTransaction(chain_str=chain_str,
                                                 from_address=from_address,
                                                 to_address=to_address)
-    outgoing_tx_processor.transfer(amount=amount, token_symbol=token_symbol)
+    outgoing_tx_processor.transfer(amount=amount, decimals=decimals, token_symbol=token_symbol)

apps/cic-ussd/cic_ussd/tasks/callback_handler.py

@@ -1,4 +1,5 @@
 # standard imports
+
 import json
 import logging
 from datetime import timedelta
@@ -7,7 +8,6 @@ from datetime import timedelta
 import celery
 from cic_types.condiments import MetadataPointer
 
-
 # local imports
 from cic_ussd.account.balance import get_balances, calculate_available_balance
 from cic_ussd.account.statement import generate
@@ -15,8 +15,15 @@ from cic_ussd.cache import Cache, cache_data, cache_data_key, get_cached_data
 from cic_ussd.account.chain import Chain
 from cic_ussd.db.models.base import SessionBase
 from cic_ussd.db.models.account import Account
+from cic_ussd.processor.util import wait_for_cache
 from cic_ussd.account.statement import filter_statement_transactions
 from cic_ussd.account.transaction import transaction_actors
+from cic_ussd.account.tokens import (collate_token_metadata,
+                                     get_cached_token_data,
+                                     get_default_token_symbol,
+                                     handle_token_symbol_list,
+                                     process_token_data,
+                                     set_active_token)
 from cic_ussd.error import AccountCreationDataNotFound
 from cic_ussd.tasks.base import CriticalSQLAlchemyTask
 
@@ -58,6 +65,9 @@ def account_creation_callback(self, result: str, url: str, status_code: int):
     session.close()
     logg.debug(f'recorded account with identifier: {result}')
 
+    token_symbol = get_default_token_symbol()
+    set_active_token(blockchain_address=result, token_symbol=token_symbol)
+
     queue = self.request.delivery_info.get('routing_key')
     s_phone_pointer = celery.signature(
         'cic_ussd.tasks.metadata.add_phone_pointer', [result, phone_number], queue=queue
@@ -88,8 +98,16 @@ def balances_callback(result: list, param: str, status_code: int):
         raise ValueError(f'Unexpected status code: {status_code}.')
 
     balances = result[0]
-    identifier = bytes.fromhex(param)
+    identifier = []
-    key = cache_data_key(identifier, MetadataPointer.BALANCES)
+    param = param.split(',')
+    for identity in param:
+        try:
+            i = bytes.fromhex(identity)
+            identifier.append(i)
+        except ValueError:
+            i = identity.encode('utf-8')
+            identifier.append(i)
+    key = cache_data_key(identifier=identifier, salt=MetadataPointer.BALANCES)
     cache_data(key, json.dumps(balances))
 
 
@@ -122,6 +140,38 @@ def statement_callback(self, result, param: str, status_code: int):
             generate(param, queue, sender_transaction)
 
 
+@celery_app.task
+def token_data_callback(result: dict, param: str, status_code: int):
+    """
+    :param result:
+    :type result:
+    :param param:
+    :type param:
+    :param status_code:
+    :type status_code:
+    :return:
+    :rtype:
+    """
+
+    if status_code != 0:
+        raise ValueError(f'Unexpected status code: {status_code}.')
+
+    token = result[0]
+    token_symbol = token.get('symbol')
+    identifier = token_symbol.encode('utf-8')
+    token_meta_key = cache_data_key(identifier, MetadataPointer.TOKEN_META_SYMBOL)
+    token_info_key = cache_data_key(identifier, MetadataPointer.TOKEN_PROOF_SYMBOL)
+    token_meta = get_cached_data(token_meta_key)
+    token_meta = json.loads(token_meta)
+    token_info = get_cached_data(token_info_key)
+    token_info = json.loads(token_info)
+    token_data = collate_token_metadata(token_info=token_info, token_metadata=token_meta)
+    token_data = {**token_data, **token}
+    token_data_key = cache_data_key([bytes.fromhex(param), identifier], MetadataPointer.TOKEN_DATA)
+    cache_data(token_data_key, json.dumps(token_data))
+    handle_token_symbol_list(blockchain_address=param, token_symbol=token_symbol)
+
+
 @celery_app.task(bind=True)
 def transaction_balances_callback(self, result: list, param: dict, status_code: int):
     """
@@ -138,10 +188,15 @@ def transaction_balances_callback(self, result: list, param: dict, status_code:
     """
     if status_code != 0:
         raise ValueError(f'Unexpected status code: {status_code}.')
-
     balances_data = result[0]
-    available_balance = calculate_available_balance(balances_data)
     transaction = param
+    token_symbol = transaction.get('token_symbol')
+    blockchain_address = transaction.get('blockchain_address')
+    identifier = [bytes.fromhex(blockchain_address), token_symbol.encode('utf-8')]
+    wait_for_cache(identifier, f'Cached token data for: {token_symbol}', MetadataPointer.TOKEN_DATA)
+    token_data = get_cached_token_data(blockchain_address, token_symbol)
+    decimals = token_data.get('decimals')
+    available_balance = calculate_available_balance(balances_data, decimals)
     transaction['available_balance'] = available_balance
     queue = self.request.delivery_info.get('routing_key')
 
@@ -175,6 +230,8 @@ def transaction_callback(result: dict, param: str, status_code: int):
     source_token_symbol = result.get('source_token_symbol')
     source_token_value = result.get('source_token_value')
 
+    process_token_data(blockchain_address=recipient_blockchain_address, token_symbol=destination_token_symbol)
+
     recipient_metadata = {
         "alt_blockchain_address": sender_blockchain_address,
         "blockchain_address": recipient_blockchain_address,

apps/cic-ussd/cic_ussd/tasks/notifications.py

@@ -6,6 +6,7 @@ import logging
 import celery
 
 # local imports
+from cic_ussd.account.tokens import get_cached_token_data
 from cic_ussd.account.transaction import from_wei
 from cic_ussd.notifications import Notifier
 from cic_ussd.phone_number import Support
@@ -25,11 +26,15 @@ def transaction(notification_data: dict):
     """
     role = notification_data.get('role')
     token_value = notification_data.get('token_value')
-    amount = token_value if token_value == 0 else from_wei(token_value)
+    token_symbol = notification_data.get('token_symbol')
+    blockchain_address = notification_data.get('blockchain_address')
+    token_data = get_cached_token_data(blockchain_address, token_symbol)
+    decimals = token_data.get('decimals')
+    amount = token_value if token_value == 0 else from_wei(decimals, token_value)
     balance = notification_data.get('available_balance')
     phone_number = notification_data.get('phone_number')
     preferred_language = notification_data.get('preferred_language')
-    token_symbol = notification_data.get('token_symbol')
+
     alt_metadata_id = notification_data.get('alt_metadata_id')
     metadata_id = notification_data.get('metadata_id')
     transaction_type = notification_data.get('transaction_type')

apps/cic-ussd/cic_ussd/tasks/processor.py

@@ -47,7 +47,8 @@ def cache_statement(parsed_transaction: dict, querying_party: str):
     statement_transactions = []
     if cached_statement:
         statement_transactions = json.loads(cached_statement)
-    statement_transactions.append(parsed_transaction)
+    if parsed_transaction not in statement_transactions:
+        statement_transactions.append(parsed_transaction)
     data = json.dumps(statement_transactions)
     identifier = bytes.fromhex(querying_party)
     key = cache_data_key(identifier, MetadataPointer.STATEMENT)
@@ -74,6 +75,14 @@ def parse_transaction(transaction: dict) -> dict:
     role = transaction.get('role')
     alt_blockchain_address = transaction.get('alt_blockchain_address')
     blockchain_address = transaction.get('blockchain_address')
+    identifier = bytes.fromhex(blockchain_address)
+    token_symbol = transaction.get('token_symbol')
+    if role == 'recipient':
+        key = cache_data_key(identifier=identifier, salt=MetadataPointer.TOKEN_LAST_RECEIVED)
+        cache_data(key, token_symbol)
+    if role == 'sender':
+        key = cache_data_key(identifier=identifier, salt=MetadataPointer.TOKEN_LAST_SENT)
+        cache_data(key, token_symbol)
     account = validate_transaction_account(blockchain_address, role, session)
     alt_account = session.query(Account).filter_by(blockchain_address=alt_blockchain_address).first()
     if alt_account:

apps/cic-ussd/requirements.txt

@@ -6,7 +6,7 @@ celery==4.4.7
 cffi==1.14.6
 cic-eth~=0.12.5a1
 cic-notify~=0.4.0a11
-cic-types~=0.2.1a2
+cic-types~=0.2.1a7
 confini>=0.3.6rc4,<0.5.0
 phonenumbers==8.12.12
 psycopg2==2.8.6

apps/cic-ussd/states/token_management_states.json

@@ -0,0 +1,7 @@
+[
+  "first_account_tokens_set",
+  "middle_account_tokens_set",
+  "last_account_tokens_set",
+  "token_selection_pin_authorization",
+  "exit_successful_token_selection"
+]

apps/cic-ussd/transitions/account_statement_transitions.json

@@ -8,7 +8,7 @@
   {
     "trigger": "scan_data",
     "source": "first_transaction_set",
-    "dest": "start",
+    "dest": "exit",
     "conditions": "cic_ussd.state_machine.logic.menu.menu_zero_zero_selected"
   },
   {
@@ -31,7 +31,7 @@
   {
     "trigger": "scan_data",
     "source": "middle_transaction_set",
-    "dest": "start",
+    "dest": "exit",
     "conditions": "cic_ussd.state_machine.logic.menu.menu_zero_zero_selected"
   },
   {
@@ -48,7 +48,7 @@
   {
     "trigger": "scan_data",
     "source": "last_transaction_set",
-    "dest": "start",
+    "dest": "exit",
     "conditions": "cic_ussd.state_machine.logic.menu.menu_zero_zero_selected"
   },
   {

apps/cic-ussd/transitions/exit_transitions.json

@@ -58,5 +58,17 @@
     "source": "exit_successful_transaction",
     "dest": "exit",
     "conditions": "cic_ussd.state_machine.logic.menu.menu_ninety_nine_selected"
+  },
+  {
+    "trigger": "scan_data",
+    "source": "exit_successful_token_selection",
+    "dest": "start",
+    "conditions": "cic_ussd.state_machine.logic.menu.menu_zero_zero_selected"
+  },
+  {
+    "trigger": "scan_data",
+    "source": "exit_successful_token_selection",
+    "dest": "exit",
+    "conditions": "cic_ussd.state_machine.logic.menu.menu_ninety_nine_selected"
   }
 ]

apps/cic-ussd/transitions/start_menu_transitions.json

@@ -8,15 +8,21 @@
   {
     "trigger": "scan_data",
     "source": "start",
-    "dest": "account_management",
+    "dest": "first_account_tokens_set",
     "conditions": "cic_ussd.state_machine.logic.menu.menu_two_selected"
   },
   {
     "trigger": "scan_data",
     "source": "start",
-    "dest": "help",
+    "dest": "account_management",
     "conditions": "cic_ussd.state_machine.logic.menu.menu_three_selected"
   },
+  {
+    "trigger": "scan_data",
+    "source": "start",
+    "dest": "help",
+    "conditions": "cic_ussd.state_machine.logic.menu.menu_four_selected"
+  },
   {
     "trigger": "scan_data",
     "source": "start",

apps/cic-ussd/transitions/token_management_transitions.json

@@ -0,0 +1,93 @@
+[
+  {
+    "trigger": "scan_data",
+    "source": "first_account_tokens_set",
+    "dest": "middle_account_tokens_set",
+    "conditions": "cic_ussd.state_machine.logic.menu.menu_eleven_selected"
+  },
+  {
+    "trigger": "scan_data",
+    "source": "first_account_tokens_set",
+    "dest": "exit",
+    "conditions": "cic_ussd.state_machine.logic.menu.menu_zero_zero_selected"
+  },
+  {
+    "trigger": "scan_data",
+    "source": "first_account_tokens_set",
+    "dest": "token_selection_pin_authorization",
+    "conditions": "cic_ussd.state_machine.logic.tokens.is_valid_token_selection",
+    "after": "cic_ussd.state_machine.logic.tokens.process_token_selection"
+  },
+  {
+    "trigger": "scan_data",
+    "source": "first_account_tokens_set",
+    "dest": "exit_invalid_menu_option"
+  },
+  {
+    "trigger": "scan_data",
+    "source": "middle_account_tokens_set",
+    "dest": "last_account_tokens_set",
+    "conditions": "cic_ussd.state_machine.logic.menu.menu_eleven_selected"
+  },
+  {
+    "trigger": "scan_data",
+    "source": "middle_account_tokens_set",
+    "dest": "first_account_tokens_set",
+    "conditions": "cic_ussd.state_machine.logic.menu.menu_twenty_two_selected"
+  },
+  {
+    "trigger": "scan_data",
+    "source": "middle_account_tokens_set",
+    "dest": "exit",
+    "conditions": "cic_ussd.state_machine.logic.menu.menu_zero_zero_selected"
+  },
+  {
+    "trigger": "scan_data",
+    "source": "middle_account_tokens_set",
+    "dest": "token_selection_pin_authorization",
+    "conditions": "cic_ussd.state_machine.logic.tokens.is_valid_token_selection",
+    "after": "cic_ussd.state_machine.logic.tokens.process_token_selection"
+  },
+  {
+    "trigger": "scan_data",
+    "source": "middle_account_tokens_set",
+    "dest": "exit_invalid_menu_option"
+  },
+  {
+    "trigger": "scan_data",
+    "source": "last_account_tokens_set",
+    "dest": "middle_account_tokens_set",
+    "conditions": "cic_ussd.state_machine.logic.menu.menu_twenty_two_selected"
+  },
+  {
+    "trigger": "scan_data",
+    "source": "last_account_tokens_set",
+    "dest": "exit",
+    "conditions": "cic_ussd.state_machine.logic.menu.menu_zero_zero_selected"
+  },
+  {
+    "trigger": "scan_data",
+    "source": "last_account_tokens_set",
+    "dest": "token_selection_pin_authorization",
+    "conditions": "cic_ussd.state_machine.logic.tokens.is_valid_token_selection",
+    "after": "cic_ussd.state_machine.logic.tokens.process_token_selection"
+  },
+  {
+    "trigger": "scan_data",
+    "source": "last_account_tokens_set",
+    "dest": "exit_invalid_menu_option"
+  },
+  {
+    "trigger": "scan_data",
+    "source": "token_selection_pin_authorization",
+    "dest": "exit_successful_token_selection",
+    "conditions": "cic_ussd.state_machine.logic.pin.is_authorized_pin",
+    "after": "cic_ussd.state_machine.logic.tokens.set_selected_active_token"
+  },
+  {
+    "trigger": "scan_data",
+    "source": "token_selection_pin_authorization",
+    "dest": "exit",
+    "conditions": "cic_ussd.state_machine.logic.menu.menu_zero_zero_selected"
+  }
+]

apps/cic-ussd/var/lib/locale/helpers.en.yml

@@ -9,6 +9,8 @@ en:
     Not provided
   no_transaction_history: |-
     No transaction history
+  no_tokens_list: |-
+    No tokens to list
   other: |-
     Other
   received: |-

apps/cic-ussd/var/lib/locale/helpers.sw.yml

@@ -9,6 +9,8 @@ sw:
     Haijawekwa
   no_transaction_history: |-
     Hamna ripoti ya matumizi
+  no_tokens_list: |-
+    Hamna sarafu nyingine
   other: |-
     Nyingine
   received: |-

apps/cic-ussd/var/lib/locale/ussd.en.yml

@@ -33,14 +33,37 @@ en:
     start: |-
       CON Balance %{account_balance} %{account_token_name}
       1. Send
-      2. My Account
+      2. My Sarafu
-      3. Help
+      3. My Account
+      4. Help
     enter_transaction_recipient: |-
       CON Enter phone number
       0. Back
     enter_transaction_amount: |-
       CON Enter amount
       0. Back
+    first_account_tokens_set: |-
+      CON Choose a number or symbol from your balances:
+      %{first_account_tokens_set}
+      11. Next
+      00. Exit
+    middle_account_tokens_set: |-
+      CON Choose a number or symbol from your balances:
+      %{middle_account_tokens_set}
+      11. Next
+      22. Previous
+      00. Exit
+    last_account_tokens_set: |-
+      CON Choose a number or symbol from your balances:
+      %{last_account_tokens_set}
+      22. Previous
+      00. Exit
+    token_selection_pin_authorization:
+      first: |-
+        CON %{token_data}
+        Enter pin to select:
+      retry: |-
+        %{retry_pin_entry}
     account_management: |-
       CON My account
       1. My profile
@@ -73,7 +96,6 @@ en:
       0. Back
     retry_pin_entry: |-
       CON Incorrect PIN entered, please try again. You have %{remaining_attempts} attempts remaining.
-      0. Back
     enter_current_pin:
       first: |-
         CON Enter current PIN.
@@ -203,6 +225,10 @@ en:
       Your Sarafu-Network balances is: %{token_balance}
       00. Back
       99. Exit
+    exit_successful_token_selection: |-
+      CON Success! %{token_symbol} is your active Sarafu.
+      00. Back
+      99. Exit
     invalid_service_code: |-
       Please dial %{valid_service_code} to access Sarafu Network
     help: |-

apps/cic-ussd/var/lib/locale/ussd.sw.yml

@@ -32,14 +32,37 @@ sw:
     start: |-
       CON Salio %{account_balance} %{account_token_name}
       1. Tuma
-      2. Akaunti yangu
+      2. Sarafu yangu
-      3. Usaidizi
+      3. Akaunti yangu
+      4. Usaidizi
     enter_transaction_recipient: |-
       CON Weka nambari ya simu
       0. Nyuma
     enter_transaction_amount: |-
       CON Weka kiwango
       0. Nyuma
+    first_account_tokens_set: |-
+      CON Chagua nambari au ishara kutoka kwa salio zako:
+      %{first_account_tokens_set}
+      11. Mbele
+      00. Ondoka
+    middle_account_tokens_set: |-
+      CON Chagua nambari au ishara kutoka kwa salio zako:
+      %{middle_account_tokens_set}
+      11. Mbele
+      22. Nyuma
+      00. Ondoka
+    last_account_tokens_set: |-
+      CON Chagua nambari au ishara kutoka kwa salio zako:
+      %{last_account_tokens_set}
+      22. Nyuma
+      00. Ondoka
+    token_selection_pin_authorization:
+      first: |-
+        CON %{token_data}
+        Weka nambari ya siri kuchagua:
+      retry: |-
+        %{retry_pin_entry}
     account_management: |-
       CON Akaunti yangu
       1. Wasifu wangu
@@ -72,7 +95,6 @@ sw:
       0. Nyuma
     retry_pin_entry: |-
       CON Nambari uliyoweka si sahihi, jaribu tena. Una majaribio %{remaining_attempts} yaliyobaki.
-      0. Back
     enter_current_pin:
       first: |-
         CON Weka nambari ya siri.
@@ -202,6 +224,10 @@ sw:
       Akaunti yako ya Sarafu ina salio ifuatayo: %{token_balance}
       00. Nyuma
       99. Ondoka
+    exit_successful_token_selection: |-
+      CON Chaguo lako limekamilika, %{token_symbol} ni sarafu itakayotumika.
+      00. Nyuma
+      99. Ondoka
     invalid_service_code: |-
       Bonyeza %{valid_service_code} kutumia mtandao wa Sarafu
     help: |-

apps/contract-migration/scripts/proofs.py

@@ -64,7 +64,8 @@ def wrapper(chain_spec: ChainSpec, rpc: EthHTTPConnection) -> Declarator:
     return Declarator(chain_spec, gas_oracle=gas_oracle, nonce_oracle=nonce_oracle, signer=signer)
 
 
-def write_to_declarator(contract_address: hex, contract_wrapper: Declarator, proof: any, rpc: EthHTTPConnection, signer_address: hex, token_address: hex):
+def write_to_declarator(contract_address: hex, contract_wrapper: Declarator, proof: any, rpc: EthHTTPConnection,
+                        signer_address: hex, token_address: hex):
     operation = contract_wrapper.add_declaration(contract_address, signer_address, token_address, proof)
     results = rpc.do(operation[1])
     rpc.wait(results)
@@ -90,13 +91,15 @@ if __name__ == '__main__':
     token_meta_writer = MetadataRequestsHandler(cic_type=MetadataPointer.TOKEN_META, identifier=token_address_bytes)
     write_metadata(token_meta_writer, token_meta_data)
 
-    token_meta_symbol_writer = MetadataRequestsHandler(cic_type=MetadataPointer.TOKEN_META_SYMBOL, identifier=token_symbol_bytes)
+    token_meta_symbol_writer = MetadataRequestsHandler(cic_type=MetadataPointer.TOKEN_META_SYMBOL,
+                                                       identifier=token_symbol_bytes)
     write_metadata(token_meta_symbol_writer, token_meta_data)
 
     token_proof_writer = MetadataRequestsHandler(cic_type=MetadataPointer.TOKEN_PROOF, identifier=token_address_bytes)
     write_metadata(token_proof_writer, token_proof_data)
 
-    token_proof_symbol_writer = MetadataRequestsHandler(cic_type=MetadataPointer.TOKEN_PROOF_SYMBOL, identifier=token_symbol_bytes)
+    token_proof_symbol_writer = MetadataRequestsHandler(cic_type=MetadataPointer.TOKEN_PROOF_SYMBOL,
+                                                        identifier=token_symbol_bytes)
     write_metadata(token_proof_symbol_writer, token_proof_data)
 
     rpc = EthHTTPConnection(url=config.get('RPC_PROVIDER'), chain_spec=chain_spec)
@@ -112,3 +115,13 @@ if __name__ == '__main__':
                         rpc=rpc,
                         signer_address=args.signer_address,
                         token_address=args.e)
+
+    hashed_token_proof = hash_proof(args.token_symbol.encode('utf-8'))
+    identifier = bytes.fromhex(hashed_token_proof)
+    token_immutable_proof_writer = MetadataRequestsHandler(cic_type=MetadataPointer.NONE, identifier=identifier)
+    write_to_declarator(contract_address=args.address_declarator,
+                        contract_wrapper=contract_wrapper,
+                        proof=identifier,
+                        rpc=rpc,
+                        signer_address=args.signer_address,
+                        token_address=args.e)

docker-compose.yml

@@ -506,6 +506,7 @@ services:
       DATABASE_DRIVER: ${DATABASE_DRIVER:-psycopg2}
       DATABASE_DEBUG: ${DATABASE_DEBUG:-0}
       DATABASE_POOL_SIZE: 0
+      APP_PASSWORD_PEPPER: ${APP_PASSWORD_PEPPER:-QYbzKff6NhiQzY3ygl2BkiKOpER8RE/Upqs/5aZWW+I=}
       CELERY_BROKER_URL: ${CELERY_BROKER_URL:-redis://redis}
       CELERY_RESULT_URL: ${CELERY_BROKER_URL:-redis://redis}
       CHAIN_SPEC: ${CHAIN_SPEC:-evm:byzantium:8996:bloxberg}
@@ -545,6 +546,7 @@ services:
       DATABASE_DRIVER: ${DATABASE_DRIVER:-psycopg2}
       DATABASE_DEBUG: ${DATABASE_DEBUG:-0}
       DATABASE_POOL_SIZE: 0
+      SERVER_PORT: 9500
     restart: on-failure 
     ports:
       - ${DEV_CIC_USER_SERVER_PORT:-63415}:9500
@@ -574,11 +576,13 @@ services:
       DATABASE_DRIVER: ${DATABASE_DRIVER:-psycopg2}
       DATABASE_DEBUG: ${DATABASE_DEBUG:-0}
       DATABASE_POOL_SIZE: 0
+      APP_PASSWORD_PEPPER: ${APP_PASSWORD_PEPPER:-QYbzKff6NhiQzY3ygl2BkiKOpER8RE/Upqs/5aZWW+I=}
       CHAIN_SPEC: ${CHAIN_SPEC:-evm:byzantium:8996:bloxberg}
       CELERY_BROKER_URL: ${CELERY_BROKER_URL:-redis://redis}
       CELERY_RESULT_URL: ${CELERY_RESULT_URL:-redis://redis}
       REDIS_PORT: 6379
       REDIS_HOST: redis
+      SERVER_PORT: 9000
     restart: on-failure
     depends_on:
       - postgres
@@ -586,7 +590,7 @@ services:
       - cic-eth-tasker
       - cic-cache-tasker
     ports:
-      - ${DEV_CIC_USER_USSD_SERVER_PORT:-63315}:9500
+      - ${DEV_CIC_USER_USSD_SERVER_PORT:-63315}:9000
     volumes:
       - ./apps/contract-migration/testdata/pgp/:/usr/src/secrets/
     command: "/root/start_cic_user_ussd_server.sh -vv"