implement pool limit

config/config.go

@@ -15,7 +15,10 @@ const (
 	voucherHoldingsPathPrefix  = "/api/v1/holdings"
 	voucherTransfersPathPrefix = "/api/v1/transfers/last10"
 	voucherDataPathPrefix      = "/api/v1/token"
-	AliasPrefix                = "api/v1/alias"
+	aliasPrefix                = "api/v1/alias"
+	poolDepositPrefix          = "/api/v2/pool/deposit"
+	poolSwapQoutePrefix        = "/api/v2/pool/quote"
+	poolSwapPrefix             = "/api/v2/pool/swap"
 	AliasEnsPrefix             = "/api/v1/bypass"
 )
 
@@ -36,6 +39,9 @@ var (
 	VoucherTransfersURL string
 	VoucherDataURL      string
 	CheckAliasURL       string
+	PoolDepositURL      string
+	PoolSwapQuoteURL    string
+	PoolSwapURL         string
 	AliasEnsURL         string
 )
 
@@ -72,7 +78,11 @@ func LoadConfig() error {
 	VoucherHoldingsURL, _ = url.JoinPath(dataURLBase, voucherHoldingsPathPrefix)
 	VoucherTransfersURL, _ = url.JoinPath(dataURLBase, voucherTransfersPathPrefix)
 	VoucherDataURL, _ = url.JoinPath(dataURLBase, voucherDataPathPrefix)
-	CheckAliasURL, _ = url.JoinPath(dataURLBase, AliasPrefix)
+	CheckAliasURL, _ = url.JoinPath(dataURLBase, aliasPrefix)
+	PoolDepositURL, _ = url.JoinPath(custodialURLBase, poolDepositPrefix)
+	PoolSwapQuoteURL, _ = url.JoinPath(custodialURLBase, poolSwapQoutePrefix)
+	PoolSwapURL, _ = url.JoinPath(custodialURLBase, poolSwapPrefix)
+
 	AliasEnsURL, _ = url.JoinPath(aliasEnsURLBase, AliasEnsPrefix)
 	return nil
 }

dev/api.go

@@ -34,6 +34,9 @@ const (
 	defaultDecimals               = 6
 	zeroAddress           string  = "0x0000000000000000000000000000000000000000"
 	defaultVoucherBalance float64 = 500.00
+	cityPoolAddress       string  = "0x3b517308D858a47458aD5C8E699697C5dc91Da0F"
+	poolName              string  = "citypool"
+	PoolSymbol            string  = "CTY"
 )
 
 type Tx struct {
@@ -91,6 +94,14 @@ type Voucher struct {
 	Location  string `json: "location"`
 }
 
+type Pool struct {
+	Name      string            `json: "name"`
+	Symbol    string            `json: "symbol"`
+	Address   string            `json: "address"`
+	Vouchers  []Voucher         `json: "voucher"`
+	PoolLimit map[string]string `json: "poollimit"`
+}
+
 type DevAccountService struct {
 	db               db.Db
 	accounts         map[string]Account
@@ -106,6 +117,7 @@ type DevAccountService struct {
 	defaultAccount   string
 	emitterFunc      event.EmitterFunc
 	pfx              []byte
+	pools            map[string]Pool
 }
 
 func NewDevAccountService(ctx context.Context, ss storage.StorageService) *DevAccountService {
@@ -118,6 +130,7 @@ func NewDevAccountService(ctx context.Context, ss storage.StorageService) *DevAc
 		txs:              make(map[string]Tx),
 		txsTrack:         make(map[string]string),
 		autoVoucherValue: make(map[string]int),
+		pools:            make(map[string]Pool),
 		defaultAccount:   zeroAddress,
 		pfx:              []byte("__"),
 	}
@@ -171,6 +184,15 @@ func (das *DevAccountService) loadAccount(ctx context.Context, pubKey string, v
 	return nil
 }
 
+func (p *Pool) hasVoucher(voucherAddress string) bool {
+	for _, value := range p.Vouchers {
+		if value.Address == voucherAddress {
+			return true
+		}
+	}
+	return false
+}
+
 func (das *DevAccountService) loadTx(ctx context.Context, hsh string, v []byte) error {
 	var mytx Tx
 
@@ -193,6 +215,17 @@ func (das *DevAccountService) loadAlias(ctx context.Context, alias string, key [
 	return nil
 }
 
+func (das *DevAccountService) loadPoolInfo(ctx context.Context, name string, v []byte) error {
+	var pool Pool
+
+	err := json.Unmarshal(v, &pool)
+	if err != nil {
+		return fmt.Errorf("failed to unmarshall pool info: %v", err)
+	}
+	das.pools[name] = pool
+	return nil
+}
+
 func (das *DevAccountService) loadItem(ctx context.Context, k []byte, v []byte) error {
 	var err error
 	s := string(k)
@@ -200,6 +233,7 @@ func (das *DevAccountService) loadItem(ctx context.Context, k []byte, v []byte)
 	if len(ss) != 2 {
 		return fmt.Errorf("malformed key: %s", s)
 	}
+	fmt.Println("S1", ss[0])
 	if ss[0] == "account" {
 		err = das.loadAccount(ctx, ss[1], v)
 		logg.ErrorCtxf(ctx, "loading saved account failed", "error_load_account", err)
@@ -209,6 +243,8 @@ func (das *DevAccountService) loadItem(ctx context.Context, k []byte, v []byte)
 	} else if ss[0] == "alias" {
 		err = das.loadAlias(ctx, ss[1], k)
 		logg.ErrorCtxf(ctx, "loading aliases failed", "error_load_aliases", err)
+	} else if ss[0] == "pool" {
+		err = das.loadPoolInfo(ctx, ss[1], v)
 	} else {
 		logg.ErrorCtxf(ctx, "unknown double underscore key", "key", ss[0])
 	}
@@ -224,13 +260,13 @@ func (das *DevAccountService) loadAll(ctx context.Context) error {
 	}
 	for true {
 		k, v := dumper.Next(ctx)
+		logg.InfoCtxf(ctx, "loading all", "key", string(k), "value", string(v))
 		if k == nil {
 			break
 		}
 		if !bytes.HasPrefix(k, das.pfx) {
 			continue
 		}
-
 		err = das.loadItem(ctx, k, v)
 		if err != nil {
 			return err
@@ -265,6 +301,35 @@ func (das *DevAccountService) WithAutoVoucher(ctx context.Context, symbol string
 	return das
 }
 
+func (das *DevAccountService) RegisterPool(ctx context.Context, name string, sm string) error {
+	var seedVouchers []Voucher
+
+	h := sha1.New()
+	h.Write([]byte(sm))
+	z := h.Sum(nil)
+	pooladdr := fmt.Sprintf("0x%x", z)
+
+	p := Pool{
+		Name:      name,
+		Symbol:    sm,
+		Address:   pooladdr,
+		PoolLimit: make(map[string]string),
+	}
+
+	for _, v := range das.vouchers {
+		//pre-load vouchers with vouchers when a pool is registered
+		seedVouchers = append(seedVouchers, v)
+		p.PoolLimit[v.Address] = fmt.Sprintf("%f", defaultVoucherBalance)
+	}
+	p.Vouchers = append(p.Vouchers, seedVouchers...)
+
+	err := das.savePoolInfo(ctx, p)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
 // TODO: add persistence for vouchers
 // TODO: set max balance for 0x00 address
 func (das *DevAccountService) AddVoucher(ctx context.Context, symbol string) error {
@@ -345,6 +410,20 @@ func (das *DevAccountService) saveAccount(ctx context.Context, acc Account) erro
 	return das.db.Put(ctx, []byte(k), v)
 }
 
+func (das *DevAccountService) savePoolInfo(ctx context.Context, pool Pool) error {
+	if das.db == nil {
+		return nil
+	}
+	k := das.prefixKeyFor("pool", pool.Address)
+	v, err := json.Marshal(pool)
+	if err != nil {
+		return err
+	}
+	das.db.SetSession("")
+	das.db.SetPrefix(db.DATATYPE_USERDATA)
+	return das.db.Put(ctx, []byte(k), v)
+}
+
 func (das *DevAccountService) saveAlias(ctx context.Context, alias map[string]string) error {
 	if das.db == nil {
 		return fmt.Errorf("Db cannot be nil")
@@ -415,6 +494,80 @@ func (das *DevAccountService) CreateAccount(ctx context.Context) (*models.Accoun
 	}, nil
 }
 
+func (das *DevAccountService) PoolDeposit(ctx context.Context, amount, from, poolAddress, tokenAddress string) (*models.PoolDepositResult, error) {
+	_, ok := das.accounts[from]
+	if !ok {
+		return nil, fmt.Errorf("account not found (publickey): %v", from)
+	}
+	sym, ok := das.vouchersAddress[tokenAddress]
+	if !ok {
+		return nil, fmt.Errorf("voucher address %v not found", tokenAddress)
+	}
+	uid, err := uuid.NewV4()
+	if err != nil {
+		return nil, err
+	}
+
+	_, ok = das.vouchers[sym]
+	if !ok {
+		return nil, fmt.Errorf("voucher address %v found but does not resolve", tokenAddress)
+	}
+
+	if err != nil {
+		return nil, err
+	}
+	return &models.PoolDepositResult{
+		TrackingId: uid.String(),
+	}, nil
+}
+
+func (das *DevAccountService) GetPoolSwapQuote(ctx context.Context, amount, from, fromTokenAddress, poolAddress, toTokenAddress string) (*models.PoolSwapQuoteResult, error) {
+	_, ok := das.accounts[from]
+	if !ok {
+		return nil, fmt.Errorf("account not found (publickey): %v", from)
+	}
+	p, ok := das.pools[poolAddress]
+	if !ok {
+		return nil, fmt.Errorf("pool address %v not found", poolAddress)
+	}
+
+	//resolve the token address you are trying to swap from(fromTokenAddress)
+	ok = p.hasVoucher(fromTokenAddress)
+	if !ok {
+		return nil, fmt.Errorf("voucher with address %v not found in the pool", fromTokenAddress)
+	}
+
+	//Return a a quote that is equal to the amount entered
+	return &models.PoolSwapQuoteResult{IncludesFeesDeduction: false, OutValue: amount}, nil
+}
+
+func (das *DevAccountService) PoolSwap(ctx context.Context, amount, from, fromTokenAddress, poolAddress, toTokenAddress string) (*models.PoolSwapResult, error) {
+	uid, err := uuid.NewV4()
+	if err != nil {
+		return nil, err
+	}
+
+	p, ok := das.pools[poolAddress]
+	if !ok {
+		return nil, fmt.Errorf("pool address %v not found", toTokenAddress)
+	}
+	_, ok = das.accounts[from]
+	if !ok {
+		return nil, fmt.Errorf("account not found (publickey): %v", from)
+	}
+	ok = p.hasVoucher(fromTokenAddress)
+	if !ok {
+		return nil, fmt.Errorf("token %v not found in the pool", fromTokenAddress)
+	}
+
+	ok = p.hasVoucher(toTokenAddress)
+	if !ok {
+		return nil, fmt.Errorf("token %v not found in the pool", toTokenAddress)
+	}
+
+	return &models.PoolSwapResult{TrackingId: uid.String()}, nil
+}
+
 func (das *DevAccountService) TrackAccountStatus(ctx context.Context, publicKey string) (*models.TrackStatusResult, error) {
 	var ok bool
 	_, ok = das.accounts[publicKey]
@@ -653,3 +806,67 @@ func (das *DevAccountService) RequestAlias(ctx context.Context, publicKey string
 		Alias: alias,
 	}, nil
 }
+
+func (das *DevAccountService) FetchTopPools(ctx context.Context) ([]dataserviceapi.PoolDetails, error) {
+	var topPools []dataserviceapi.PoolDetails
+	for _, p := range das.pools {
+		topPools = append(topPools, dataserviceapi.PoolDetails{
+			PoolName:            p.Name,
+			PoolSymbol:          p.Symbol,
+			PoolContractAdrress: p.Address,
+		})
+	}
+	return topPools, nil
+}
+
+func (das *DevAccountService) GetPoolSwappableFromVouchers(ctx context.Context, poolAddress, publicKey string) ([]dataserviceapi.TokenHoldings, error) {
+	var swapFromList []dataserviceapi.TokenHoldings
+
+	p, ok := das.pools[poolAddress]
+	if !ok {
+		return nil, fmt.Errorf("Invalid pool address: %v", poolAddress)
+	}
+	for _, v := range p.Vouchers {
+		swapFromList = append(swapFromList, dataserviceapi.TokenHoldings{
+			ContractAddress: v.Address,
+			TokenSymbol:     v.Symbol,
+			TokenDecimals:   string(defaultDecimals),
+			Balance:         fmt.Sprintf("%f", defaultVoucherBalance),
+		})
+	}
+
+	return swapFromList, nil
+}
+
+func (das *DevAccountService) GetPoolSwappableVouchers(ctx context.Context, poolAddress, publicKey string) ([]dataserviceapi.TokenHoldings, error) {
+	var swapToList []dataserviceapi.TokenHoldings
+	_, ok := das.pools[poolAddress]
+	if !ok {
+		return nil, fmt.Errorf("Invalid pool address: %v", poolAddress)
+	}
+	for _, voucher := range das.vouchers {
+		swapToList = append(swapToList, dataserviceapi.TokenHoldings{
+			ContractAddress: voucher.Address,
+			TokenSymbol:     voucher.Symbol,
+			TokenDecimals:   string(defaultDecimals),
+			Balance:         fmt.Sprintf("%f", defaultVoucherBalance),
+		})
+	}
+	return swapToList, nil
+}
+
+func (das *DevAccountService) GetSwapFromTokenMaxLimit(ctx context.Context, poolAddress, fromTokenAddress, toTokenAddress, publicKey string) (*models.MaxLimitResult, error) {
+
+	p, ok := das.pools[poolAddress]
+	if !ok {
+		return nil, fmt.Errorf("Pool address: %v not found ", poolAddress)
+	}
+	limit, ok := p.PoolLimit[fromTokenAddress]
+	if !ok {
+		return nil, fmt.Errorf("Token address: %v not found in the pool", fromTokenAddress)
+	}
+
+	return &models.MaxLimitResult{
+		Max: limit,
+	}, nil
+}

dev/data/swap_from.json

@@ -0,0 +1,32 @@
+{
+    "ok": true,
+    "description": "Swap from list",
+    "result": {
+        "filtered": [
+            {
+                "contractAddress": "0xc7B78Ac9ACB9E025C8234621FC515bC58179dEAe",
+                "tokenSymbol": "AMANI",
+                "tokenDecimals": "6",
+                "balance": ""
+            },
+            {
+                "contractAddress": "0xF0C3C7581b8b96B59a97daEc8Bd48247cE078674",
+                "tokenSymbol": "AMUA",
+                "tokenDecimals": "6",
+                "balance": ""
+            },
+            {
+                "contractAddress": "0x371455a30fc62736145Bd8429Fcc6481186f235F",
+                "tokenSymbol": "BAHARI",
+                "tokenDecimals": "6",
+                "balance": ""
+            },
+            {
+                "contractAddress": "0x7cA6113b59c24a880F382C7E12d609a6Eb05246b",
+                "tokenSymbol": "BANGLA",
+                "tokenDecimals": "6",
+                "balance": ""
+            }
+        ]
+    }
+}

dev/data/swap_to.json

@@ -0,0 +1,14 @@
+{
+    "ok": true,
+    "description": "Swap to list",
+    "result": {
+        "filtered": [
+            {
+                "contractAddress": "0x765DE816845861e75A25fCA122bb6898B8B1282a",
+                "tokenSymbol": "cUSD",
+                "tokenDecimals": "18",
+                "balance": ""
+            }
+        ]
+    }
+}

dev/data/top_pools.json

@@ -0,0 +1,43 @@
+{
+    "ok": true,
+    "description": "Top 5 pools sorted by swaps",
+    "result": {
+        "topPools": [
+            {
+                "poolName": "Kenya ROLA Pool",
+                "poolSymbol": "ROLA",
+                "poolContractAddress": "0x48a953cA5cf5298bc6f6Af3C608351f537AAcb9e",
+                "limiterAddress": "",
+                "voucherRegistry": ""
+            },
+            {
+                "poolName": "Nairobi ROLA Pool",
+                "poolSymbol": "NAIROBI",
+                "poolContractAddress": "0xB0660Ac1Ee3d32ea35bc728D7CA1705Fa5A37528",
+                "limiterAddress": "",
+                "voucherRegistry": ""
+            },
+            {
+                "poolName": "Friends of Kiriba Ecosystem ",
+                "poolSymbol": "FRIENDS",
+                "poolContractAddress": "0xC4848263821FA02baB2181910A2eFb9CECb2c21C",
+                "limiterAddress": "",
+                "voucherRegistry": ""
+            },
+            {
+                "poolName": "Resilient Community Waqfs",
+                "poolSymbol": "REZILIENS",
+                "poolContractAddress": "0x1e40951d7a28147D8B4A554C60c42766C92e2Fc6",
+                "limiterAddress": "",
+                "voucherRegistry": ""
+            },
+            {
+                "poolName": "GrE Tech",
+                "poolSymbol": "GRET",
+                "poolContractAddress": "0xb7B9d0A264eD1a8E2418571B7AC5933C79C9c2B8",
+                "limiterAddress": "",
+                "voucherRegistry": ""
+            }
+        ]
+    }
+}

go.mod

@@ -8,7 +8,7 @@ require (
 	git.grassecon.net/grassrootseconomics/visedriver v0.8.0-beta.10.0.20250122123424-6749c632b0a2
 	github.com/gofrs/uuid v4.4.0+incompatible
 	github.com/grassrootseconomics/eth-custodial v1.3.0-beta
-	github.com/grassrootseconomics/ussd-data-service v1.2.0-beta
+	github.com/grassrootseconomics/ussd-data-service v1.4.0-beta
 	github.com/stretchr/testify v1.9.0
 )
 

go.sum

@@ -18,6 +18,8 @@ github.com/grassrootseconomics/eth-custodial v1.3.0-beta h1:twrMBhl89GqDUL9PlkzQ
 github.com/grassrootseconomics/eth-custodial v1.3.0-beta/go.mod h1:7uhRcdnJplX4t6GKCEFkbeDhhjlcaGJeJqevbcvGLZo=
 github.com/grassrootseconomics/ussd-data-service v1.2.0-beta h1:fn1gwbWIwHVEBtUC2zi5OqTlfI/5gU1SMk0fgGixIXk=
 github.com/grassrootseconomics/ussd-data-service v1.2.0-beta/go.mod h1:omfI0QtUwIdpu9gMcUqLMCG8O1XWjqJGBx1qUMiGWC0=
+github.com/grassrootseconomics/ussd-data-service v1.4.0-beta h1:4fMd/3h2ZIhRg4GdHQmRw5FfD3MpJvFNNJQo+Q27f5M=
+github.com/grassrootseconomics/ussd-data-service v1.4.0-beta/go.mod h1:9sGnorpKaK76FmOGXoh/xv7x5siSFNYdXxQo9BKW4DI=
 github.com/graygnuorg/go-gdbm v0.0.0-20220711140707-71387d66dce4 h1:U4kkNYryi/qfbBF8gh7Vsbuz+cVmhf5kt6pE9bYYyLo=
 github.com/graygnuorg/go-gdbm v0.0.0-20220711140707-71387d66dce4/go.mod h1:zpZDgZFzeq9s0MIeB1P50NIEWDFFHSFBohI/NbaTD/Y=
 github.com/jackc/pgpassfile v1.0.0 h1:/6Hmqy13Ss2zCq62VdNG8tM1wchn8zjSGOBJ6icpsIM=

models/pool_swap_response.go

@@ -0,0 +1,18 @@
+package models
+
+type PoolDepositResult struct {
+	TrackingId string `json:"trackingId"`
+}
+
+type PoolSwapQuoteResult struct {
+	IncludesFeesDeduction bool   `json:"includesFeesDeduction"`
+	OutValue              string `json:"outValue"`
+}
+
+type PoolSwapResult struct {
+	TrackingId string `json:"trackingId"`
+}
+
+type MaxLimitResult struct {
+	Max string `json:"max"`
+}

remote/account_service.go

@@ -17,4 +17,11 @@ type AccountService interface {
 	TokenTransfer(ctx context.Context, amount, from, to, tokenAddress string) (*models.TokenTransferResponse, error)
 	CheckAliasAddress(ctx context.Context, alias string) (*models.AliasAddress, error)
 	RequestAlias(ctx context.Context, hint string, publicKey string) (*models.RequestAliasResult, error)
+	PoolDeposit(ctx context.Context, amount, from, poolAddress, tokenAddress string) (*models.PoolDepositResult, error)
+	FetchTopPools(ctx context.Context) ([]dataserviceapi.PoolDetails, error)
+	GetPoolSwappableFromVouchers(ctx context.Context, poolAddress, publicKey string) ([]dataserviceapi.TokenHoldings, error)
+	GetPoolSwappableVouchers(ctx context.Context, poolAddress, publicKey string) ([]dataserviceapi.TokenHoldings, error)
+	GetPoolSwapQuote(ctx context.Context, amount, from, fromTokenAddress, poolAddress, toTokenAddress string) (*models.PoolSwapQuoteResult, error)
+	PoolSwap(ctx context.Context, amount, from, fromTokenAddress, poolAddress, toTokenAddress string) (*models.PoolSwapResult, error)
+	GetSwapFromTokenMaxLimit(ctx context.Context, poolAddress, fromTokenAddress, toTokenAddress, publicKey string) (*models.MaxLimitResult, error)
 }

remote/http/service.go

@@ -263,6 +263,106 @@ func resolveAliasAddress(ctx context.Context, alias string) (*models.AliasAddres
 	return &models.AliasAddress{Address: aliasEnsResult.Address}, err
 }
 
+func (as *HTTPAccountService) FetchTopPools(ctx context.Context) ([]dataserviceapi.PoolDetails, error) {
+	svc := dev.NewDevAccountService(ctx, as.SS)
+	return svc.FetchTopPools(ctx)
+}
+
+func (as *HTTPAccountService) PoolDeposit(ctx context.Context, amount, from, poolAddress, tokenAddress string) (*models.PoolDepositResult, error) {
+	var r models.PoolDepositResult
+
+	//pool deposit payload
+	payload := map[string]string{
+		"amount":       amount,
+		"from":         from,
+		"poolAddress":  poolAddress,
+		"tokenAddress": tokenAddress,
+	}
+
+	payloadBytes, err := json.Marshal(payload)
+	if err != nil {
+		return nil, err
+	}
+	req, err := http.NewRequest("POST", config.TokenTransferURL, bytes.NewBuffer(payloadBytes))
+	if err != nil {
+		return nil, err
+	}
+	_, err = doRequest(ctx, req, &r)
+	if err != nil {
+		return nil, err
+	}
+	return &r, nil
+}
+
+func (as *HTTPAccountService) GetPoolSwapQuote(ctx context.Context, amount, from, fromTokenAddress, poolAddress, toTokenAddress string) (*models.PoolSwapQuoteResult, error) {
+	var r models.PoolSwapQuoteResult
+
+	//pool swap quote payload
+	payload := map[string]string{
+		"amount":           amount,
+		"from":             from,
+		"fromTokenAddress": fromTokenAddress,
+		"poolAddress":      poolAddress,
+		"toTokenAddress":   toTokenAddress,
+	}
+
+	payloadBytes, err := json.Marshal(payload)
+	if err != nil {
+		return nil, err
+	}
+	req, err := http.NewRequest("POST", config.PoolSwapQuoteURL, bytes.NewBuffer(payloadBytes))
+	if err != nil {
+		return nil, err
+	}
+	_, err = doRequest(ctx, req, &r)
+	if err != nil {
+		return nil, err
+	}
+	return &r, nil
+}
+
+func (as *HTTPAccountService) GetPoolSwappableFromVouchers(ctx context.Context, poolAddress, publicKey string) ([]dataserviceapi.TokenHoldings, error) {
+	svc := dev.NewDevAccountService(ctx, as.SS)
+	return svc.GetPoolSwappableFromVouchers(ctx, poolAddress, publicKey)
+}
+
+func (as *HTTPAccountService) GetPoolSwappableVouchers(ctx context.Context, poolAddress, publicKey string) ([]dataserviceapi.TokenHoldings, error) {
+	svc := dev.NewDevAccountService(ctx, as.SS)
+	return svc.GetPoolSwappableVouchers(ctx, poolAddress, publicKey)
+}
+
+func (as *HTTPAccountService) PoolSwap(ctx context.Context, amount, from, fromTokenAddress, poolAddress, toTokenAddress string) (*models.PoolSwapResult, error) {
+	var r models.PoolSwapResult
+
+	//swap payload
+	payload := map[string]string{
+		"amount":           amount,
+		"from":             from,
+		"fromTokenAddress": fromTokenAddress,
+		"poolAddress":      poolAddress,
+		"toTokenAddress":   toTokenAddress,
+	}
+
+	payloadBytes, err := json.Marshal(payload)
+	if err != nil {
+		return nil, err
+	}
+	req, err := http.NewRequest("POST", config.PoolSwapQuoteURL, bytes.NewBuffer(payloadBytes))
+	if err != nil {
+		return nil, err
+	}
+	_, err = doRequest(ctx, req, &r)
+	if err != nil {
+		return nil, err
+	}
+	return &r, nil
+}
+
+func (as *HTTPAccountService) GetSwapFromTokenMaxLimit(ctx context.Context, poolAddress, fromTokenAddress, toTokenAddress, publicKey string) (*models.MaxLimitResult, error) {
+	svc := dev.NewDevAccountService(ctx, as.SS)
+	return svc.GetSwapFromTokenMaxLimit(ctx, poolAddress, fromTokenAddress, toTokenAddress, publicKey)
+}
+
 func (as *HTTPAccountService) RequestAlias(ctx context.Context, publicKey string, hint string) (*models.RequestAliasResult, error) {
 	if as.SS == nil {
 		return nil, fmt.Errorf("The storage service cannot be nil")

testutil/mocks/service_mock.go

@@ -57,3 +57,38 @@ func (m MockAccountService) RequestAlias(ctx context.Context, publicKey string,
 	args := m.Called(publicKey, hint)
 	return args.Get(0).(*models.RequestAliasResult), args.Error(1)
 }
+
+func (m MockAccountService) PoolDeposit(ctx context.Context, amount, from, poolAddress, tokenAddress string) (*models.PoolDepositResult, error) {
+	args := m.Called(amount, from, poolAddress, tokenAddress)
+	return args.Get(0).(*models.PoolDepositResult), args.Error(1)
+}
+
+func (m MockAccountService) FetchTopPools(ctx context.Context) ([]dataserviceapi.PoolDetails, error) {
+	args := m.Called()
+	return args.Get(0).([]dataserviceapi.PoolDetails), args.Error(1)
+}
+
+func (m MockAccountService) GetPoolSwappableFromVouchers(ctx context.Context, poolAddress, publicKey string) ([]dataserviceapi.TokenHoldings, error) {
+	args := m.Called(poolAddress, publicKey)
+	return args.Get(0).([]dataserviceapi.TokenHoldings), args.Error(1)
+}
+
+func (m MockAccountService) GetPoolSwappableVouchers(ctx context.Context, poolAddress, publicKey string) ([]dataserviceapi.TokenHoldings, error) {
+	args := m.Called(poolAddress, publicKey)
+	return args.Get(0).([]dataserviceapi.TokenHoldings), args.Error(1)
+}
+
+func (m MockAccountService) GetPoolSwapQuote(ctx context.Context, amount, from, fromTokenAddress, poolAddress, toTokenAddress string) (*models.PoolSwapQuoteResult, error) {
+	args := m.Called(amount, from, fromTokenAddress, poolAddress, toTokenAddress)
+	return args.Get(0).(*models.PoolSwapQuoteResult), args.Error(1)
+}
+
+func (m MockAccountService) PoolSwap(ctx context.Context, amount, from, fromTokenAddress, poolAddress, toTokenAddress string) (*models.PoolSwapResult, error) {
+	args := m.Called(amount, from, fromTokenAddress, poolAddress, toTokenAddress)
+	return args.Get(0).(*models.PoolSwapResult), args.Error(1)
+}
+
+func (m MockAccountService) GetSwapFromTokenMaxLimit(ctx context.Context, poolAddress, fromTokenAddress, toTokenAddress, publicKey string) (*models.MaxLimitResult, error) {
+	args := m.Called(poolAddress, fromTokenAddress, toTokenAddress, publicKey)
+	return args.Get(0).(*models.MaxLimitResult), args.Error(1)
+}

testutil/testservice/account_service.go

@@ -57,6 +57,10 @@ func (tas *TestAccountService) TokenTransfer(ctx context.Context, amount, from,
 	}, nil
 }
 
+func (m TestAccountService) PoolDeposit(ctx context.Context, amount, from, poolAddress, tokenAddress string) (*models.PoolDepositResult, error) {
+	return &models.PoolDepositResult{}, nil
+}
+
 func (m TestAccountService) CheckAliasAddress(ctx context.Context, alias string) (*models.AliasAddress, error) {
 	return &models.AliasAddress{}, nil
 }
@@ -64,3 +68,27 @@ func (m TestAccountService) CheckAliasAddress(ctx context.Context, alias string)
 func (m TestAccountService) RequestAlias(ctx context.Context, publicKey string, hint string) (*models.RequestAliasResult, error) {
 	return &models.RequestAliasResult{}, nil
 }
+
+func (m TestAccountService) FetchTopPools(ctx context.Context) ([]dataserviceapi.PoolDetails, error) {
+	return []dataserviceapi.PoolDetails{}, nil
+}
+
+func (m TestAccountService) GetPoolSwappableFromVouchers(ctx context.Context, poolAddress, publicKey string) ([]dataserviceapi.TokenHoldings, error) {
+	return []dataserviceapi.TokenHoldings{}, nil
+}
+
+func (m TestAccountService) GetPoolSwappableVouchers(ctx context.Context, poolAddress, publicKey string) ([]dataserviceapi.TokenHoldings, error) {
+	return []dataserviceapi.TokenHoldings{}, nil
+}
+
+func (m TestAccountService) GetPoolSwapQuote(ctx context.Context, amount, from, fromTokenAddress, poolAddress, toTokenAddress string) (*models.PoolSwapQuoteResult, error) {
+	return &models.PoolSwapQuoteResult{}, nil
+}
+
+func (m TestAccountService) PoolSwap(ctx context.Context, amount, from, fromTokenAddress, poolAddress, toTokenAddress string) (*models.PoolSwapResult, error) {
+	return &models.PoolSwapResult{}, nil
+}
+
+func (m TestAccountService) GetSwapFromTokenMaxLimit(ctx context.Context, poolAddress, fromTokenAddress, toTokenAddress, publicKey string) (*models.MaxLimitResult, error) {
+	return &models.MaxLimitResult{}, nil
+}