WIP implement dev api balance, account create

dev/api.go

@@ -0,0 +1,69 @@
+package dev
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"math/rand"
+	"strconv"
+
+	"github.com/gofrs/uuid"
+	"git.grassecon.net/grassrootseconomics/sarafu-api/models"
+)
+
+const (
+	pubKeyLen int = 20
+)
+
+type account struct {
+	balance int
+	nonce int
+}
+
+type DevAccountService struct {
+	accounts map[string]account
+	accountsTrack map[string]string
+//	accountsSession map[string]string
+}
+
+func NewDevAccountService() *DevAccountService {
+	return &DevAccountService{
+		accounts: make(map[string]account),
+		accountsTrack: make(map[string]string),
+		//accountsSession: make(map[string]string),
+	}
+}
+
+func (das *DevAccountService) CheckBalance(ctx context.Context, publicKey string) (*models.BalanceResult, error) {
+	acc, ok := das.accounts[publicKey]
+	if !ok {
+		return nil, fmt.Errorf("account not found (publickey): %v", publicKey)
+	}
+	return &models.BalanceResult {
+		Balance: strconv.Itoa(acc.balance),
+		Nonce: json.Number(strconv.Itoa(acc.nonce)),
+	}, nil
+}
+
+
+func (das *DevAccountService) CreateAccount(ctx context.Context) (*models.AccountResult, error) {
+	var b [pubKeyLen]byte
+	uid, err := uuid.NewV4()
+	if err != nil {
+		return nil, err
+	}
+	c, err := rand.Read(b[:])
+	if err != nil {
+		return nil, err
+	}
+	if c != pubKeyLen {
+		return nil, fmt.Errorf("short read: %d", c)
+	}
+	pubKey := fmt.Sprintf("0x%x", b)
+	das.accounts[pubKey] = account{}
+	das.accountsTrack[uid.String()] = pubKey
+	return &models.AccountResult{
+		PublicKey: pubKey,
+		TrackingId: uid.String(),
+	}, nil
+}