package handler

import (
	"net/http"

	"github.com/gin-gonic/gin"
	"note-manager/config"
	"note-manager/service"
)

// AdminHandler 后台管理处理器
type AdminHandler struct {
	noteSvc *service.NoteService
	config  *config.Config
}

// NewAdminHandler 创建后台管理处理器
func NewAdminHandler(noteSvc *service.NoteService, cfg *config.Config) *AdminHandler {
	return &AdminHandler{noteSvc: noteSvc, config: cfg}
}

// Login 登录页面
func (h *AdminHandler) LoginPage(c *gin.Context) {
	c.HTML(http.StatusOK, "login.html", gin.H{
		"title": "后台管理登录",
	})
}

// Login 验证登录
func (h *AdminHandler) Login(c *gin.Context) {
	password := c.PostForm("password")
	if password == h.config.AdminPass {
		// 设置 cookie，有效期 7 天
		c.SetCookie("admin_token", "authenticated", 7*24*3600, "/", "", false, true)
		c.JSON(http.StatusOK, gin.H{
			"code":    0,
			"message": "登录成功",
		})
		return
	}
	c.JSON(http.StatusUnauthorized, gin.H{
		"code":    401,
		"message": "密码错误",
	})
}

// Logout 登出
func (h *AdminHandler) Logout(c *gin.Context) {
	c.SetCookie("admin_token", "", -1, "/", "", false, true)
	c.JSON(http.StatusOK, gin.H{
		"code":    0,
		"message": "已退出登录",
	})
}

// CheckAuth 检查是否已登录
func (h *AdminHandler) CheckAuth(c *gin.Context) {
	token, err := c.Cookie("admin_token")
	if err == nil && token == "authenticated" {
		c.JSON(http.StatusOK, gin.H{
			"code":    0,
			"message": "已登录",
			"data": gin.H{
				"authenticated": true,
			},
		})
		return
	}
	c.JSON(http.StatusOK, gin.H{
		"code":    0,
		"message": "未登录",
		"data": gin.H{
			"authenticated": false,
		},
	})
}

// IndexPage 后台管理首页
func (h *AdminHandler) IndexPage(c *gin.Context) {
	token, err := c.Cookie("admin_token")
	if err != nil || token != "authenticated" {
		c.Redirect(http.StatusFound, "/admin/login")
		return
	}
	c.HTML(http.StatusOK, "index.html", gin.H{
		"title": "笔记管理后台",
	})
}