# Standard
import importlib
import json
import logging
import os
from typing import TYPE_CHECKING, List

import requests
from chainlib.chain import ChainSpec
from chainlib.cli.config import Config
from cic.contract.components.attachment import Attachment
from cic.contract.components.meta import Meta
from cic.contract.components.proof import Proof
from cic.contract.components.token import Token
from cic.contract.helpers import init_writers_from_config
from cic.contract.network import Network

# Local Modules
from cic.contract.processor import ContractProcessor
from cic.writers import HTTPWriter, KeyedWriterFactory, MetadataWriter, OutputWriter

# external imports
from cic_types.ext.metadata import MetadataRequestsHandler
from cic_types.ext.metadata.signer import Signer as MetadataSigner

log = logging.getLogger(__name__)


class Contract:
    """ """

    def __init__(
        self,
        token: Token,
        proof: Proof,
        meta: Meta,
        attachment: Attachment,
        network: Network,
    ):
        self.token = token
        self.proof = proof
        self.meta = meta
        self.attachment = attachment
        self.network = network

    def __str__(self):
        s = ""
        s += f"\n[cic.header]\nversion = {self.proof.version()}\n\n"
        s += f"[cic.token]\n{self.token}\n"
        s += f"[cic.proof]\n{self.proof}\n"
        s += f"[cic.meta]\n{self.meta}\n"
        s += f"[cic.attachment]\n{self.attachment}\n"
        s += f"[cic.network]\n{self.network}\n"
        return s


def load_contract(directory) -> Contract:
    token = Token(path=directory)
    proof = Proof(path=directory)
    meta = Meta(path=directory)
    attachment = Attachment(path=directory)
    network = Network(directory)

    token.load()
    proof.load()
    meta.load()
    attachment.load()
    network.load()
    return Contract(
        token=token, proof=proof, meta=meta, attachment=attachment, network=network
    )


def generate_contract(
    directory: str, targets: List[str], config, interactive=True
) -> Contract:
    if os.path.exists(directory):
        contine = input(
            f"Directory {directory} already exists, Would you like to delete it? (y/n): "
        )
        if contine.lower() != "y":
            log.debug("Trying to load existing contract")
            return load_contract(directory)
        else:
            print(f"Deleted {directory}")
            os.system(f"rm -rf {directory}")
    os.makedirs(directory)
    log.debug("Generating token")
    token = Token(directory, interactive=interactive)
    token.start()

    log.debug("Generating proof")
    proof = Proof(directory, interactive=interactive)
    proof.start()

    log.debug("Generating meta")
    meta = Meta(directory, interactive=interactive)
    meta.start()

    log.debug("Generating attachment")
    attachment = Attachment(directory, interactive=interactive)

    log.debug("Generating network")
    network = Network(directory, targets=targets)
    network.start()

    log.debug(
        f"""Populating infomation from network:
    CIC_REGISTRY_ADDRESS: {config.get("CIC_REGISTRY_ADDRESS")}
    CHAIN_SPEC: {config.get("CHAIN_SPEC")}
    RPC_PROVIDER: {config.get("RPC_PROVIDER")}
    """
    )
    for target in targets:
        # TODO Clean this up
        modname = f"cic.ext.{target}"
        cmd_mod = importlib.import_module(modname)
        signer_hint = config.get("WALLET_KEY_FILE")
        keys = cmd_mod.list_keys(config, signer_hint)
        if len(keys) > 1:
            print(f"More than one key found, please select one:")
            for idx, key in enumerate(keys):
                print(f"{idx} - {key} ")
            selecting_key = True
            while selecting_key:
                idx = int(input("Select key: "))
                if keys[idx] is not None:
                    key_account_address = keys[idx]
                    selecting_key = False
                else:
                    print("Invalid key, try again")
        else:
            key_account_address = keys[0]

        m = importlib.import_module(f"cic.ext.{target}.start")
        m.extension_start(
            network,
            registry_address=config.get("CIC_REGISTRY_ADDRESS"),
            chain_spec=ChainSpec.from_chain_str(config.get("CHAIN_SPEC")),
            rpc_provider=config.get("RPC_PROVIDER"),
            key_account_address=key_account_address,
        )
    network.load()

    return Contract(
        token=token, proof=proof, meta=meta, attachment=attachment, network=network
    )


def deploy_contract(
    config: Config,
    target: str,
    contract_directory: str,
):

    modname = f"cic.ext.{target}"
    cmd_mod = importlib.import_module(modname)

    writers = init_writers_from_config(config)
    output_directory = os.path.join(contract_directory, "out")
    output_writer_path_meta = output_directory

    metadata_endpoint = config.get("META_URL")

    if metadata_endpoint is not None:
        MetadataRequestsHandler.base_url = metadata_endpoint
        MetadataSigner.gpg_path = "/tmp"
        MetadataSigner.key_file_path = config.get("AUTH_KEYFILE_PATH")
        MetadataSigner.gpg_passphrase = config.get("AUTH_PASSPHRASE")
        writers["proof"] = KeyedWriterFactory(MetadataWriter, HTTPWriter).new
        writers["attachment"] = KeyedWriterFactory(None, HTTPWriter).new
        writers["meta"] = MetadataWriter
        output_writer_path_meta = metadata_endpoint

    ct = Token(path=contract_directory)
    cm = Meta(
        path=contract_directory, writer=writers["meta"](path=output_writer_path_meta)
    )
    ca = Attachment(
        path=contract_directory,
        writer=writers["attachment"](path=output_writer_path_meta),
    )
    cp = Proof(
        path=contract_directory,
        attachments=ca,
        writer=writers["proof"](path=output_writer_path_meta),
    )
    cn = Network(path=contract_directory)

    ca.load()
    ct.load()
    cp.load()
    cm.load()
    cn.load()

    chain_spec = None
    try:
        chain_spec = config.get("CHAIN_SPEC")
        log.debug(f"using CHAIN_SPEC from config: {chain_spec}")
    except KeyError:
        chain_spec = cn.chain_spec
        config.add(chain_spec, "CHAIN_SPEC", exists_ok=True)
        log.debug(f"using CHAIN_SPEC: {str(chain_spec)} from network")

    signer_hint = config.get("WALLET_KEY_FILE")
    (rpc, signer) = cmd_mod.parse_adapter(config, signer_hint)

    target_network_reference = cn.resource(target)
    chain_spec = cn.chain_spec(target)
    log.debug(
        f'found reference {target_network_reference["contents"]} chain spec {chain_spec} for target {target}'
    )
    c = getattr(cmd_mod, "new")(
        chain_spec,
        target_network_reference["contents"],
        cp,
        signer_hint=signer,
        rpc=rpc,
        outputs_writer=writers["ext"](path=output_directory),
    )
    c.apply_token(ct)

    p = ContractProcessor(proof=cp, attachment=ca, metadata=cm, extensions=[c])
    p.process()