add /account/coins api + remove coins from /balance

go.mod

@@ -5,7 +5,7 @@ go 1.13
 require (
 	github.com/btcsuite/btcd v0.21.0-beta
 	github.com/btcsuite/btcutil v1.0.2
-	github.com/coinbase/rosetta-sdk-go v0.5.9
+	github.com/coinbase/rosetta-sdk-go v0.6.0
 	github.com/dgraph-io/badger/v2 v2.2007.2
 	github.com/grpc-ecosystem/go-grpc-middleware v1.2.2
 	github.com/stretchr/testify v1.6.1

go.sum

@@ -64,6 +64,8 @@ github.com/cloudflare/cloudflare-go v0.10.2-0.20190916151808-a80f83b9add9/go.mod
 github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/coinbase/rosetta-sdk-go v0.5.9 h1:CuGQE3HFmYwdEACJnuOtVI9cofqPsGvq6FdFIzaOPKI=
 github.com/coinbase/rosetta-sdk-go v0.5.9/go.mod h1:xd4wYUhV3LkY78SPH8BUhc88rXfn2jYgN9BfiSjbcvM=
+github.com/coinbase/rosetta-sdk-go v0.6.0 h1:U8/NhkPo7CGJR8Ud82Y0HqtujXSVzGZKscmxOHsmS54=
+github.com/coinbase/rosetta-sdk-go v0.6.0/go.mod h1:pqBibzTcpz0mLqb7is8fo2qf93tcHjItJ3u7Yud8RI4=
 github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
 github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8NzMklzPG4d5KIOhIy30Tk=
 github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
@@ -102,6 +104,8 @@ github.com/ethereum/go-ethereum v1.9.23/go.mod h1:JIfVb6esrqALTExdz9hRYvrP0xBDf6
 github.com/fatih/color v1.3.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
 github.com/fatih/color v1.9.0 h1:8xPHl4/q1VyqGIPif1F+1V3Y3lSmrq01EabUW3CoW5s=
 github.com/fatih/color v1.9.0/go.mod h1:eQcE1qtQxscV5RaZvpXrrb8Drkc3/DdQ+uUYCNjL+zU=
+github.com/fatih/color v1.10.0 h1:s36xzo75JdqLaaWoiEHk767eHiwo0598uUxyfiPkDsg=
+github.com/fatih/color v1.10.0/go.mod h1:ELkj/draVOlAH/xkhN6mQ50Qd0MPOk5AAr3maGEBuJM=
 github.com/fjl/memsize v0.0.0-20180418122429-ca190fb6ffbc/go.mod h1:VvhXpOYNQvB+uIk2RvXzuaQtkQJzzIx6lSBe1xv7hi0=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
 github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
@@ -189,6 +193,8 @@ github.com/mattn/go-colorable v0.1.4 h1:snbPLB8fVfU9iwbbo30TPtbLRzwWu6aJS6Xh4eaa
 github.com/mattn/go-colorable v0.1.4/go.mod h1:U0ppj6V5qS13XJ6of8GYAs25YV2eR4EVcfRqFIhoBtE=
 github.com/mattn/go-colorable v0.1.7 h1:bQGKb3vps/j0E9GfJQ03JyhRuxsvdAanXlT9BTw3mdw=
 github.com/mattn/go-colorable v0.1.7/go.mod h1:u6P/XSegPjTcexA+o6vUJrdnUu04hMope9wVRipJSqc=
+github.com/mattn/go-colorable v0.1.8 h1:c1ghPdyEDarC70ftn0y+A/Ee++9zz8ljHG1b13eJ0s8=
+github.com/mattn/go-colorable v0.1.8/go.mod h1:u6P/XSegPjTcexA+o6vUJrdnUu04hMope9wVRipJSqc=
 github.com/mattn/go-ieproxy v0.0.0-20190610004146-91bb50d98149/go.mod h1:31jz6HNzdxOmlERGGEc4v/dMssOfmp2p5bT/okiKFFc=
 github.com/mattn/go-ieproxy v0.0.0-20190702010315-6dee0af9227d/go.mod h1:31jz6HNzdxOmlERGGEc4v/dMssOfmp2p5bT/okiKFFc=
 github.com/mattn/go-isatty v0.0.5-0.20180830101745-3fb116b82035/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNxMWT7Zi4=

services/account_service.go

@@ -68,7 +68,6 @@ func (s *AccountAPIService) AccountBalance(
 
 		return &types.AccountBalanceResponse{
 			BlockIdentifier: block,
-			Coins:           coins,
 			Balances: []*types.Amount{
 				{
 					Value:    balance,
@@ -97,3 +96,41 @@ func (s *AccountAPIService) AccountBalance(
 		},
 	}, nil
 }
+
+// AccountCoins implements /account/coins.
+func (s *AccountAPIService) AccountCoins(
+	ctx context.Context,
+	request *types.AccountCoinsRequest,
+) (*types.AccountCoinsResponse, *types.Error) {
+	if s.config.Mode != configuration.Online {
+		return nil, wrapErr(ErrUnavailableOffline, nil)
+	}
+
+	coins, block, err := s.i.GetCoins(ctx, request.AccountIdentifier)
+	if err != nil {
+		return nil, wrapErr(ErrUnableToGetCoins, err)
+	}
+
+	result := &types.AccountCoinsResponse{
+		BlockIdentifier: block,
+		Coins:           coins,
+	}
+	//@Todo include_mempool query
+
+	if len(request.Currencies) > 0 {
+		filtered := []*types.Coin{}
+		for _, curr := range request.Currencies {
+			if curr == nil {
+				continue
+			}
+			for _, coin := range coins {
+				if coin.Amount.Currency.Symbol == curr.Symbol {
+					filtered = append(filtered, coin)
+				}
+			}
+		}
+		result.Coins = filtered
+	}
+
+	return result, nil
+}