package auth

import (
	"backend/config"
	authservice "backend/internal/service/auth"
	"backend/utils"
	"net/http"

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

// AuthController 认证控制器 // Logan.Li
type AuthController struct {
	authService *authservice.AuthService
	db          *gorm.DB
}

// NewAuthController 创建控制器实例 // Logan.Li
func NewAuthController(db *gorm.DB, cfg *config.Config) *AuthController {
	return &AuthController{
		authService: authservice.NewAuthService(db, cfg),
		db:          db,
	}
}

// Login 管理员登录（成功/失败均记审计） // Logan.Li
func (ctrl *AuthController) Login(c *gin.Context) {
	var req struct {
		Username string `json:"username" binding:"required"`
		Password string `json:"password" binding:"required"`
	}
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "请求参数错误: " + err.Error()})
		return
	}

	result, err := ctrl.authService.Login(req)
	if err != nil {
		utils.LogAuthAction(ctrl.db, c, "login", req.Username, err.Error(), "failure")
		c.JSON(http.StatusOK, gin.H{"code": 1, "message": err.Error()})
		return
	}

	utils.LogAuthAction(ctrl.db, c, "login", req.Username, "登录成功", "success")
	c.JSON(http.StatusOK, gin.H{"code": 0, "message": "登录成功", "data": result})
}

// Me 获取当前登录用户信息 // Logan.Li
func (ctrl *AuthController) Me(c *gin.Context) {
	userID, _ := c.Get("user_id")

	userInfo, err := ctrl.authService.GetCurrentUser(userID.(uint))
	if err != nil {
		c.JSON(http.StatusOK, gin.H{"code": 1, "message": err.Error()})
		return
	}

	c.JSON(http.StatusOK, gin.H{"code": 0, "data": userInfo})
}

// ChangePassword 修改当前用户密码 // Logan.Li
func (ctrl *AuthController) ChangePassword(c *gin.Context) {
	userID, _ := c.Get("user_id")

	var req struct {
		OldPassword string `json:"old_password" binding:"required"`
		NewPassword string `json:"new_password" binding:"required,min=6"`
	}
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"code": 400, "message": "请求参数错误: " + err.Error()})
		return
	}

	if err := ctrl.authService.ChangePassword(userID.(uint), req); err != nil {
		c.JSON(http.StatusOK, gin.H{"code": 1, "message": err.Error()})
		return
	}

	c.JSON(http.StatusOK, gin.H{"code": 0, "message": "密码修改成功"})
}