1 files changed, 76 insertions, 0 deletions

diff --git a/api/market_config.go b/api/market_config.go
index 3fd10ae..d85af4d 100644
--- a/api/market_config.go
+++ b/api/market_config.go
@@ -2,7 +2,13 @@ package api
 
 import (
         "fmt"
+        "strings"
+        "time"
 
+        "immae.eu/Immae/Projets/Cryptomonnaies/Cryptoportfolio/Front/markets"
+
+        "github.com/jloup/utils"
+        "github.com/shopspring/decimal"
         "immae.eu/Immae/Projets/Cryptomonnaies/Cryptoportfolio/Front/db"
 )
 
@@ -42,6 +48,73 @@ func (q MarketConfigQuery) Run() (interface{}, *Error) {
         return config.Config, nil
 }
 
+type MarketBalanceQuery struct {
+        In struct {
+                User     db.User
+                Market   string
+                Currency string
+        }
+}
+
+func (q MarketBalanceQuery) ValidateParams() *Error {
+        if q.In.Market != "poloniex" {
+                return &Error{BadRequest, "invalid market name", fmt.Errorf("'%v' is not a valid market name", q.In.Market)}
+        }
+
+        // TODO: we should request market for available currencies.
+        if q.In.Currency != "BTC" && q.In.Currency != "USDT" && q.In.Currency != "ETH" {
+                return &Error{BadRequest, "invalid currency, accept [BTC, USDT, ETH]", fmt.Errorf("'%v' is not a valid currency", q.In.Currency)}
+        }
+
+        return nil
+}
+
+func (q MarketBalanceQuery) Run() (interface{}, *Error) {
+        config, err := db.GetUserMarketConfig(q.In.User.Id, q.In.Market)
+        if err != nil {
+                return nil, NewInternalError(err)
+        }
+
+        if config.Config["key"] == "" || config.Config["secret"] == "" {
+                return nil, &Error{BadRequest, "your credentials for this market are not setup", fmt.Errorf("'%v' credentials are not setup", q.In.Market)}
+        }
+
+        result := struct {
+                Value         decimal.Decimal            `json:"value"`
+                ValueCurrency string                     `json:"valueCurrency"`
+                Balance       map[string]decimal.Decimal `json:"balance"`
+        }{}
+
+        resultErr := CallExternalService(fmt.Sprintf("'%s' GetBalanceValue", q.In.Market), EXTERNAL_SERVICE_TIMEOUT_SECONDS*time.Second, func() *Error {
+                balance, err := Poloniex.GetBalance(config.Config["key"], config.Config["secret"])
+
+                if utils.ErrIs(err, markets.InvalidCredentials) {
+                        return &Error{InvalidMarketCredentials, "wrong market credentials", fmt.Errorf("wrong '%v' market credentials", q.In.Market)}
+                }
+
+                if err != nil {
+                        return NewInternalError(err)
+                }
+
+                value, err := Poloniex.ComputeAccountBalanceValue(balance, q.In.Currency)
+                if err != nil {
+                        return NewInternalError(err)
+                }
+
+                result.Balance = balance
+                result.ValueCurrency = q.In.Currency
+                result.Value = value.Round(8)
+
+                return nil
+        })
+
+        if resultErr != nil {
+                return nil, resultErr
+        }
+
+        return &result, nil
+}
+
 type UpdateMarketConfigQuery struct {
         In struct {
                 User   db.User
@@ -56,6 +129,9 @@ func (q UpdateMarketConfigQuery) ValidateParams() *Error {
                 return &Error{BadRequest, "invalid market name", fmt.Errorf("'%v' is not a valid market name", q.In.Market)}
         }
 
+        q.In.Secret = strings.TrimSpace(q.In.Secret)
+        q.In.Key = strings.TrimSpace(q.In.Key)
+
         return nil
 }