added CheckTokenInPool to check whether a token can be swapped from in a pool

config/config.go

@@ -7,24 +7,24 @@ import (
 )
 
 const (
-	createAccountPath          = "/api/v2/account/create"
-	trackStatusPath            = "/api/track"
-	balancePathPrefix          = "/api/account"
-	trackPath                  = "/api/v2/account/status"
-	tokenTransferPrefix        = "/api/v2/token/transfer"
-	voucherHoldingsPathPrefix  = "/api/v1/holdings"
-	voucherTransfersPathPrefix = "/api/v1/transfers/last10"
-	voucherDataPathPrefix      = "/api/v1/token"
-	aliasPrefix                = "api/v1/alias"
-	SendSMSPrefix              = "api/v1/external/upsell"
-	poolDepositPrefix          = "/api/v2/pool/deposit"
-	poolSwapQoutePrefix        = "/api/v2/pool/quote"
-	poolSwapPrefix             = "/api/v2/pool/swap"
+	createAccountPath           = "/api/v2/account/create"
+	trackStatusPath             = "/api/track"
+	balancePathPrefix           = "/api/account"
+	trackPath                   = "/api/v2/account/status"
+	tokenTransferPrefix         = "/api/v2/token/transfer"
+	voucherHoldingsPathPrefix   = "/api/v1/holdings"
+	voucherTransfersPathPrefix  = "/api/v1/transfers/last10"
+	voucherDataPathPrefix       = "/api/v1/token"
+	aliasPrefix                 = "api/v1/alias"
+	SendSMSPrefix               = "api/v1/external/upsell"
+	poolDepositPrefix           = "/api/v2/pool/deposit"
+	poolSwapQoutePrefix         = "/api/v2/pool/quote"
+	poolSwapPrefix              = "/api/v2/pool/swap"
 	topPoolsPrefix              = "/api/v1/pool/top"
 	retrievePoolDetailsPrefix   = "/api/v1/pool/reverse"
 	poolSwappableVouchersPrefix = "/api/v1/pool"
-	AliasEnsPrefix             = "/api/v1/bypass"
-	ExternalSMSPrefix          = "/api/v1/external"
+	AliasEnsPrefix              = "/api/v1/bypass"
+	ExternalSMSPrefix           = "/api/v1/external"
 )
 
 var (
@@ -51,9 +51,9 @@ var (
 	TopPoolsURL              string
 	RetrievePoolDetailsURL   string
 	PoolSwappableVouchersURL string
-	SendSMSURL          string
-	AliasEnsURL         string
-	ExternalSMSURL      string
+	SendSMSURL               string
+	AliasEnsURL              string
+	ExternalSMSURL           string
 )
 
 func setBase() error {

dev/api.go

@@ -870,7 +870,6 @@ func (das *DevAccountService) GetPoolSwappableVouchers(ctx context.Context, pool
 }
 
 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)
@@ -884,3 +883,9 @@ func (das *DevAccountService) GetSwapFromTokenMaxLimit(ctx context.Context, pool
 		Max: limit,
 	}, nil
 }
+
+func (das *DevAccountService) CheckTokenInPool(ctx context.Context, poolAddress, tokenAddress string) (*models.TokenInPoolResult, error) {
+	return &models.TokenInPoolResult{
+		CanSwapFrom: true,
+	}, nil
+}

models/pool_swap_response.go

@@ -16,3 +16,7 @@ type PoolSwapResult struct {
 type MaxLimitResult struct {
 	Max string `json:"max"`
 }
+
+type TokenInPoolResult struct {
+	CanSwapFrom bool `json:"canSwapFrom"`
+}

remote/http/service.go

@@ -469,6 +469,33 @@ func (as *HTTPAccountService) getSwapFromTokenMaxLimit(ctx context.Context, pool
 	return &r.MaxPoolLimitResult, nil
 }
 
+func (as *HTTPAccountService) CheckTokenInPool(ctx context.Context, poolAddress, tokenAddress string) (*models.TokenInPoolResult, error) {
+	if as.UseApi {
+		return as.checkTokenInPool(ctx, poolAddress, tokenAddress)
+	} else {
+		svc := dev.NewDevAccountService(ctx, as.SS)
+		return svc.CheckTokenInPool(ctx, poolAddress, tokenAddress)
+	}
+}
+
+func (as *HTTPAccountService) checkTokenInPool(ctx context.Context, poolAddress, tokenAddress string) (*models.TokenInPoolResult, error) {
+	var r struct {
+		TokenInPoolResult models.TokenInPoolResult `json:"canSwapFrom"`
+	}
+
+	ep, err := url.JoinPath(config.PoolSwappableVouchersURL, poolAddress, "check", tokenAddress)
+	if err != nil {
+		return nil, err
+	}
+	req, err := http.NewRequest("GET", ep, nil)
+	if err != nil {
+		return nil, err
+	}
+	_, err = doRequest(ctx, req, &r)
+
+	return &r.TokenInPoolResult, nil
+}
+
 // TODO: Use actual custodial api to request available alias
 func (as *HTTPAccountService) RequestAlias(ctx context.Context, publicKey string, hint string) (*models.RequestAliasResult, error) {
 	if as.SS == nil {