Added account login endpoint

internal/router/api/v1/account/login.go

@@ -0,0 +1,73 @@
+// Copyright 2024 perp (supernets)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package account
+
+import (
+	"git.supernets.org/perp/gopay/internal/context"
+	"git.supernets.org/perp/gopay/internal/jwt"
+	v1 "git.supernets.org/perp/gopay/internal/models/v1"
+	"golang.org/x/crypto/bcrypt"
+)
+
+// @summary Account login
+// @description Login to an account
+// @tags account
+// @accept json
+// @produce json
+// @param register body v1.Register true "alice" "supersecretpassword"
+// @success 200 {object} models.Token
+// @failure 400 {object} models.Error "MissingBody | InvalidUsername | InvalidPassword"
+// @failure 500 {object} models.Error "InternalServerError"
+// @router /v1/account/login [post]
+func Login(ctx *context.Context) {
+	// Store body
+	var body *v1.Register
+
+	// Bind JSON
+	err := ctx.BindJSON(&body)
+	if err != nil {
+		ctx.JSON(400, ctx.Error("MissingBody"))
+		return
+	}
+
+	// Select account by username
+	account, err := ctx.Db.Account.SelectByUsername(body.Username)
+	if err != nil {
+		ctx.JSON(500, ctx.Error("InternalServerError"))
+		return
+	}
+
+	// Compare username
+	if account.Username != body.Username {
+		ctx.JSON(400, ctx.Error("InvalidUsername"))
+		return
+	}
+
+	// Compare password
+	err = bcrypt.CompareHashAndPassword([]byte(account.Password), []byte(body.Password))
+	if err != nil {
+		ctx.JSON(400, ctx.Error("InvalidPassword"))
+		return
+	}
+
+	// Generate token
+	token, err := jwt.Encode(account.ID)
+	if err != nil {
+		ctx.JSON(500, ctx.Error("InternalServerError"))
+		return
+	}
+
+	ctx.JSON(200, ctx.Token(token))
+}

internal/router/api/v1/v1.go

@@ -40,6 +40,7 @@ func Register(ctx *context.Context) {
 
 	{
 		a := v1.Group("account")
+		a.POST("login", ctx.API(account.Login))
 		a.POST("register", ctx.API(account.Register))
 	}
 }