package handler

import (
	"net/http"
	
	"github.com/gin-gonic/gin"
	
	"newaterobot-process/service"
)

var userService = service.NewUserService()

// Register 用户注册处理器
func Register(c *gin.Context) {
	// 定义请求参数结构体
	var req struct {
		Username string `json:"username" binding:"required"`
		Password string `json:"password" binding:"required"`
		Email    string `json:"email"`
		Nickname string `json:"nickname"`
	}

	// 绑定参数
	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
	}

	// 调用服务注册用户
	user, err := userService.Register(req.Username, req.Password, req.Email, req.Nickname)
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{
			"code":    500,
			"message": "注册失败: " + err.Error(),
		})
		return
	}

	// 返回成功响应
	c.JSON(http.StatusOK, gin.H{
		"code":    200,
		"message": "注册成功",
		"data": gin.H{
			"id":       user.ID,
			"username": user.Username,
			"email":    user.Email,
			"nickname": user.Nickname,
		},
	})
}

// Login 用户登录处理器
func Login(c *gin.Context) {
	// 定义请求参数结构体
	var req struct {
		Username string `json:"username" binding:"required"`
		Password string `json:"password" binding:"required"`
	}

	// 绑定参数
	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
	}

	// 调用服务登录
	token, err := userService.Login(req.Username, req.Password)
	if err != nil {
		c.JSON(http.StatusUnauthorized, gin.H{
			"code":    401,
			"message": "登录失败: " + err.Error(),
		})
		return
	}

	// 返回成功响应
	c.JSON(http.StatusOK, gin.H{
		"code":    200,
		"message": "登录成功",
		"data": gin.H{
			"token": token,
		},
	})
}

// GetUserInfo 获取用户信息处理器
func GetUserInfo(c *gin.Context) {
	// 从上下文获取用户ID
	userIDStr, exists := c.Get("user_id")
	if !exists {
		c.JSON(http.StatusUnauthorized, gin.H{
			"code":    401,
			"message": "用户未认证",
		})
		return
	}

	// 转换用户ID类型
	userID, ok := userIDStr.(uint)
	if !ok {
		c.JSON(http.StatusInternalServerError, gin.H{
			"code":    500,
			"message": "用户ID类型错误",
		})
		return
	}

	// 调用服务获取用户信息
	user, err := userService.GetUserByID(userID)
	if err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{
			"code":    500,
			"message": "获取用户信息失败: " + err.Error(),
		})
		return
	}

	// 返回成功响应
	c.JSON(http.StatusOK, gin.H{
		"code":    200,
		"message": "获取成功",
		"data": gin.H{
			"id":        user.ID,
			"username":  user.Username,
			"email":     user.Email,
			"nickname":  user.Nickname,
			"status":    user.Status,
			"createdat": user.CreatedAt,
		},
	})
}