package handler

import (
	"net/http"

	"gen2d/internal/model"

	"github.com/gin-gonic/gin"
)

// LoginRequest 登录请求参数。
type LoginRequest struct {
	Username string `json:"username" binding:"required"`
	Password string `json:"password" binding:"required"`
}

// LoginResponse 登录成功返回的凭证及用户信息。
type LoginResponse struct {
	Token     string     `json:"token"`
	ExpiresIn int64      `json:"expiresIn"`
	User      model.User `json:"user"`
}

// Login 用户登录接口，校验用户名/密码并返回 JWT 令牌。
func Login(c *gin.Context) {
	var req LoginRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, model.Fail(http.StatusBadRequest, "参数错误: "+err.Error()))
		return
	}

	token, expiresIn, user, err := authSvc.Login(c.Request.Context(), req.Username, req.Password)
	if err != nil {
		c.JSON(http.StatusUnauthorized, model.Fail(http.StatusUnauthorized, err.Error()))
		return
	}

	c.JSON(http.StatusOK, model.OK(LoginResponse{
		Token:     token,
		ExpiresIn: expiresIn,
		User:      *user,
	}))
}