package controllers

import (
	"net/http"
	"strconv"

	"lv8girl/internal/middleware"
	"lv8girl/internal/services"

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

type AdminController struct {
	adminSvc   *services.AdminService
	messageSvc *services.MessageService
}

func NewAdminController() *AdminController {
	return &AdminController{
		adminSvc:   services.NewAdminService(),
		messageSvc: services.NewMessageService(),
	}
}

func (c *AdminController) Dashboard(ctx *gin.Context) {
	username, _ := ctx.Get("username")
	stats, _ := c.adminSvc.GetStats()

	ctx.HTML(http.StatusOK, "admin_dashboard.html", gin.H{
		"Username": username,
		"Stats":    stats,
		"Page":     "dashboard",
		"Message":  ctx.Query("msg"),
	})
}

func (c *AdminController) PendingPosts(ctx *gin.Context) {
	username, _ := ctx.Get("username")
	posts, _ := c.adminSvc.GetPendingPosts()

	ctx.HTML(http.StatusOK, "admin_pending_posts.html", gin.H{
		"Username": username,
		"Posts":    posts,
		"Page":     "pending_posts",
		"Message":  ctx.Query("msg"),
	})
}

func (c *AdminController) ApprovePost(ctx *gin.Context) {
	postID := parseUint(ctx.Param("id"))
	action := ctx.Param("action")

	if action == "approve" {
		if err := c.adminSvc.ApprovePost(postID); err != nil {
			ctx.Redirect(http.StatusFound, "/admin/pending_posts?msg=审核失败")
			return
		}
		ctx.Redirect(http.StatusFound, "/admin/pending_posts?msg=帖子已通过审核")
	} else if action == "reject" {
		if err := c.adminSvc.RejectPost(postID); err != nil {
			ctx.Redirect(http.StatusFound, "/admin/pending_posts?msg=拒绝失败")
			return
		}
		ctx.Redirect(http.StatusFound, "/admin/pending_posts?msg=帖子已拒绝")
	} else {
		ctx.Redirect(http.StatusFound, "/admin/pending_posts")
	}
}

func (c *AdminController) PendingUsers(ctx *gin.Context) {
	username, _ := ctx.Get("username")
	users, _ := c.adminSvc.GetPendingUsers()

	ctx.HTML(http.StatusOK, "admin_pending_users.html", gin.H{
		"Username": username,
		"Users":    users,
		"Page":     "pending_users",
		"Message":  ctx.Query("msg"),
	})
}

func (c *AdminController) ApproveUser(ctx *gin.Context) {
	userID := parseUint(ctx.Param("id"))
	action := ctx.Param("action")
	adminID, _ := ctx.Get("user_id")

	if action == "approve" {
		if err := c.adminSvc.ApproveUser(userID); err != nil {
			ctx.Redirect(http.StatusFound, "/admin/pending_users?msg=审核失败")
			return
		}
		if err := c.messageSvc.NotifyUserApproved(adminID.(uint), userID); err != nil {
			ctx.Redirect(http.StatusFound, "/admin/pending_users?msg=审核通过但通知失败")
			return
		}
		ctx.Redirect(http.StatusFound, "/admin/pending_users?msg=用户已通过审核")
	} else if action == "reject" {
		if err := c.adminSvc.RejectUser(userID); err != nil {
			ctx.Redirect(http.StatusFound, "/admin/pending_users?msg=拒绝失败")
			return
		}
		if err := c.messageSvc.NotifyUserRejected(adminID.(uint), userID); err != nil {
			ctx.Redirect(http.StatusFound, "/admin/pending_users?msg=拒绝成功但通知失败")
			return
		}
		ctx.Redirect(http.StatusFound, "/admin/pending_users?msg=用户已拒绝")
	} else {
		ctx.Redirect(http.StatusFound, "/admin/pending_users")
	}
}

func (c *AdminController) Posts(ctx *gin.Context) {
	username, _ := ctx.Get("username")
	posts, _ := c.adminSvc.GetAllPosts()

	ctx.HTML(http.StatusOK, "admin_posts.html", gin.H{
		"Username": username,
		"Posts":    posts,
		"Page":     "posts",
		"Message":  ctx.Query("msg"),
	})
}

func (c *AdminController) DeletePost(ctx *gin.Context) {
	postID := parseUint(ctx.Param("id"))
	if err := c.adminSvc.DeletePost(postID); err != nil {
		ctx.Redirect(http.StatusFound, "/admin/posts?msg=删除失败")
		return
	}
	ctx.Redirect(http.StatusFound, "/admin/posts?msg=帖子已删除")
}

func (c *AdminController) Users(ctx *gin.Context) {
	username, _ := ctx.Get("username")
	currentUserID, _ := ctx.Get("user_id")
	users, _ := c.adminSvc.GetAllUsers()

	ctx.HTML(http.StatusOK, "admin_users.html", gin.H{
		"Username":      username,
		"Users":         users,
		"CurrentUserID": currentUserID,
		"Page":          "users",
		"Message":       ctx.Query("msg"),
	})
}

func (c *AdminController) UpdateUserRole(ctx *gin.Context) {
	userIDStr := ctx.PostForm("user_id")
	newRole := ctx.PostForm("new_role")
	currentUserID, _ := ctx.Get("user_id")

	userID, _ := strconv.ParseUint(userIDStr, 10, 32)

	if uint(userID) == currentUserID.(uint) {
		ctx.Redirect(http.StatusFound, "/admin/users?msg=不能修改自己的角色")
		return
	}

	if err := c.adminSvc.UpdateUserRole(uint(userID), newRole); err != nil {
		ctx.Redirect(http.StatusFound, "/admin/users?msg=更新失败")
		return
	}

	if newRole == "banned" {
		if err := c.messageSvc.NotifyUserBanned(currentUserID.(uint), uint(userID)); err != nil {
			ctx.Redirect(http.StatusFound, "/admin/users?msg=封禁成功但通知失败")
			return
		}
	}

	ctx.Redirect(http.StatusFound, "/admin/users?msg=用户角色已更新")
}

func (c *AdminController) DeleteUser(ctx *gin.Context) {
	userID := parseUint(ctx.Param("id"))
	currentUserID, _ := ctx.Get("user_id")

	if userID == currentUserID.(uint) {
		ctx.Redirect(http.StatusFound, "/admin/users?msg=不能删除自己")
		return
	}

	if err := c.adminSvc.DeleteUser(userID); err != nil {
		ctx.Redirect(http.StatusFound, "/admin/users?msg=删除失败")
		return
	}
	ctx.Redirect(http.StatusFound, "/admin/users?msg=用户已删除")
}

func (c *AdminController) Comments(ctx *gin.Context) {
	username, _ := ctx.Get("username")
	comments, _ := c.adminSvc.GetAllComments()

	ctx.HTML(http.StatusOK, "admin_comments.html", gin.H{
		"Username": username,
		"Comments": comments,
		"Page":     "comments",
		"Message":  ctx.Query("msg"),
	})
}

func (c *AdminController) DeleteComment(ctx *gin.Context) {
	commentID := parseUint(ctx.Param("id"))
	if err := c.adminSvc.DeleteComment(commentID); err != nil {
		ctx.Redirect(http.StatusFound, "/admin/comments?msg=删除失败")
		return
	}
	ctx.Redirect(http.StatusFound, "/admin/comments?msg=评论已删除")
}

func init() {
	_ = middleware.GetCurrentUser
}