package handlers

import (
	"net/http"
	"strconv"

	"simple_portal/models"

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

// CardsList renders the admin cards management page.
func CardsList(c *gin.Context) {
	username, _ := c.Get("username")
	cards, err := models.GetAllCards()
	if err != nil {
		c.HTML(http.StatusInternalServerError, "admin/cards.html", gin.H{
			"Title":    "卡片管理",
			"Username": username,
			"Error":    "Failed to load cards",
			"Cards":    []models.Card{},
		})
		return
	}

	c.HTML(http.StatusOK, "admin/cards.html", gin.H{
		"Title":    "卡片管理",
		"Username": username,
		"Cards":    cards,
	})
}

// CardCreateGet renders the form for creating a new card.
func CardCreateGet(c *gin.Context) {
	username, _ := c.Get("username")
	c.HTML(http.StatusOK, "admin/card_form.html", gin.H{
		"Title":    "新建卡片",
		"Username": username,
		"Card":     nil,
		"IsEdit":   false,
	})
}

// CardCreatePost handles the form submission for creating a new card.
func CardCreatePost(c *gin.Context) {
	card := &models.Card{
		Icon:     c.PostForm("icon"),
		Title:    c.PostForm("title"),
		Subtitle: c.PostForm("subtitle"),
		URL:      c.PostForm("url"),
		Enabled:  c.PostForm("enabled") == "1",
	}

	if card.Title == "" || card.URL == "" {
		username, _ := c.Get("username")
		c.HTML(http.StatusOK, "admin/card_form.html", gin.H{
			"Title":    "新建卡片",
			"Username": username,
			"Card":     card,
			"IsEdit":   false,
			"Error":    "标题和链接不能为空",
		})
		return
	}

	if err := models.CreateCard(card); err != nil {
		username, _ := c.Get("username")
		c.HTML(http.StatusOK, "admin/card_form.html", gin.H{
			"Title":    "新建卡片",
			"Username": username,
			"Card":     card,
			"IsEdit":   false,
			"Error":    "创建失败: " + err.Error(),
		})
		return
	}

	c.Redirect(http.StatusFound, "/admin/cards")
}

// CardEditGet renders the form for editing an existing card.
func CardEditGet(c *gin.Context) {
	username, _ := c.Get("username")
	id, err := strconv.Atoi(c.Param("id"))
	if err != nil {
		c.Redirect(http.StatusFound, "/admin/cards")
		return
	}

	card, err := models.GetCardByID(id)
	if err != nil || card == nil {
		c.Redirect(http.StatusFound, "/admin/cards")
		return
	}

	c.HTML(http.StatusOK, "admin/card_form.html", gin.H{
		"Title":    "编辑卡片",
		"Username": username,
		"Card":     card,
		"IsEdit":   true,
	})
}

// CardEditPost handles the form submission for updating an existing card.
func CardEditPost(c *gin.Context) {
	id, err := strconv.Atoi(c.Param("id"))
	if err != nil {
		c.Redirect(http.StatusFound, "/admin/cards")
		return
	}

	card, err := models.GetCardByID(id)
	if err != nil || card == nil {
		c.Redirect(http.StatusFound, "/admin/cards")
		return
	}

	card.Icon = c.PostForm("icon")
	card.Title = c.PostForm("title")
	card.Subtitle = c.PostForm("subtitle")
	card.URL = c.PostForm("url")
	card.Enabled = c.PostForm("enabled") == "1"

	if card.Title == "" || card.URL == "" {
		username, _ := c.Get("username")
		c.HTML(http.StatusOK, "admin/card_form.html", gin.H{
			"Title":    "编辑卡片",
			"Username": username,
			"Card":     card,
			"IsEdit":   true,
			"Error":    "标题和链接不能为空",
		})
		return
	}

	if err := models.UpdateCard(card); err != nil {
		username, _ := c.Get("username")
		c.HTML(http.StatusOK, "admin/card_form.html", gin.H{
			"Title":    "编辑卡片",
			"Username": username,
			"Card":     card,
			"IsEdit":   true,
			"Error":    "更新失败: " + err.Error(),
		})
		return
	}

	c.Redirect(http.StatusFound, "/admin/cards")
}

// CardDelete handles deleting a card.
func CardDelete(c *gin.Context) {
	id, err := strconv.Atoi(c.Param("id"))
	if err != nil {
		c.Redirect(http.StatusFound, "/admin/cards")
		return
	}

	_ = models.DeleteCard(id)
	c.Redirect(http.StatusFound, "/admin/cards")
}

// CardToggle handles toggling a card's enabled status.
func CardToggle(c *gin.Context) {
	id, err := strconv.Atoi(c.Param("id"))
	if err != nil {
		c.Redirect(http.StatusFound, "/admin/cards")
		return
	}

	_ = models.ToggleCard(id)
	c.Redirect(http.StatusFound, "/admin/cards")
}

// CardMoveUp handles moving a card up in sort order.
func CardMoveUp(c *gin.Context) {
	id, err := strconv.Atoi(c.Param("id"))
	if err != nil {
		c.Redirect(http.StatusFound, "/admin/cards")
		return
	}

	_ = models.MoveCardUp(id)
	c.Redirect(http.StatusFound, "/admin/cards")
}

// CardMoveDown handles moving a card down in sort order.
func CardMoveDown(c *gin.Context) {
	id, err := strconv.Atoi(c.Param("id"))
	if err != nil {
		c.Redirect(http.StatusFound, "/admin/cards")
		return
	}

	_ = models.MoveCardDown(id)
	c.Redirect(http.StatusFound, "/admin/cards")
}