// Logan.Li
// 导航链接相关处理器方法
// 从 navigation.go 拆分而来，包含导航链接的 CRUD 及收藏功能

package controller

import (
	"encoding/json"
	"net/http"
	"strconv"

	"ezops/model"

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

// ListLinks 获取导航链接列表
// @Summary 获取导航链接列表
// @Description 获取所有导航链接列表
// @Tags 站内导航
// @Produce json
// @Security Bearer
// @Param group_id query int false "分组ID"
// @Param keyword query string false "搜索关键词"
// @Success 200 {object} model.Response{data=[]model.NavigationLink}
// @Router /navigations/links [get]
func (h *NavigationHandler) ListLinks(c *gin.Context) {
	db := h.db.Model(&model.NavigationLink{}).Preload("Group")

	// 分组过滤
	if groupID := c.Query("group_id"); groupID != "" {
		db = db.Where("group_id = ?", groupID)
	}

	// 关键词搜索
	if keyword := c.Query("keyword"); keyword != "" {
		db = db.Where("name LIKE ? OR description LIKE ?", "%"+keyword+"%", "%"+keyword+"%")
	}

	var links []model.NavigationLink
	db.Order("sort ASC, created_at ASC").Find(&links)

	c.JSON(http.StatusOK, model.Response{
		Code:    200,
		Message: "success",
		Data:    links,
	})
}

// CreateLink 创建导航链接
// @Summary 创建导航链接
// @Description 创建新导航链接
// @Tags 站内导航
// @Accept json
// @Produce json
// @Security Bearer
// @Param request body model.CreateNavigationLinkRequest true "创建请求"
// @Success 200 {object} model.Response{data=model.NavigationLink}
// @Router /navigations/links [post]
func (h *NavigationHandler) CreateLink(c *gin.Context) {
	var req model.CreateNavigationLinkRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, model.Response{
			Code:    400,
			Message: "请求参数错误: " + err.Error(),
		})
		return
	}

	tags, _ := json.Marshal(req.Tags)

	link := model.NavigationLink{
		GroupID:     req.GroupID,
		Name:        req.Name,
		URL:         req.URL,
		Description: req.Description,
		Icon:        req.Icon,
		Tags:        string(tags),
		Sort:        req.Sort,
		Enabled:     true,
	}

	if err := h.db.Create(&link).Error; err != nil {
		c.JSON(http.StatusInternalServerError, model.Response{
			Code:    500,
			Message: "创建失败",
		})
		return
	}

	// 更新分组链接数
	h.db.Model(&model.NavigationGroup{}).Where("id = ?", req.GroupID).
		UpdateColumn("link_count", h.db.Model(&model.NavigationLink{}).Where("group_id = ?", req.GroupID).Select("COUNT(*)"))

	h.db.Preload("Group").First(&link, link.ID)

	c.JSON(http.StatusOK, model.Response{
		Code:    200,
		Message: "创建成功",
		Data:    link,
	})
}

// UpdateLink 更新导航链接
// @Summary 更新导航链接
// @Description 更新指定导航链接
// @Tags 站内导航
// @Accept json
// @Produce json
// @Security Bearer
// @Param id path int true "链接ID"
// @Param request body model.UpdateNavigationLinkRequest true "更新请求"
// @Success 200 {object} model.Response{data=model.NavigationLink}
// @Router /navigations/links/{id} [put]
func (h *NavigationHandler) UpdateLink(c *gin.Context) {
	id, _ := strconv.Atoi(c.Param("id"))

	var req model.UpdateNavigationLinkRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, model.Response{
			Code:    400,
			Message: "请求参数错误: " + err.Error(),
		})
		return
	}

	var link model.NavigationLink
	if err := h.db.First(&link, id).Error; err != nil {
		c.JSON(http.StatusNotFound, model.Response{
			Code:    404,
			Message: "链接不存在",
		})
		return
	}

	updates := map[string]interface{}{}
	if req.GroupID > 0 {
		updates["group_id"] = req.GroupID
	}
	if req.Name != "" {
		updates["name"] = req.Name
	}
	if req.URL != "" {
		updates["url"] = req.URL
	}
	if req.Description != "" {
		updates["description"] = req.Description
	}
	if req.Icon != "" {
		updates["icon"] = req.Icon
	}
	if len(req.Tags) > 0 {
		tags, _ := json.Marshal(req.Tags)
		updates["tags"] = string(tags)
	}
	updates["sort"] = req.Sort
	if req.Enabled != nil {
		updates["enabled"] = *req.Enabled
	}

	if err := h.db.Model(&link).Updates(updates).Error; err != nil {
		c.JSON(http.StatusInternalServerError, model.Response{
			Code:    500,
			Message: "更新失败",
		})
		return
	}

	h.db.Preload("Group").First(&link, id)

	c.JSON(http.StatusOK, model.Response{
		Code:    200,
		Message: "更新成功",
		Data:    link,
	})
}

// DeleteLink 删除导航链接
// @Summary 删除导航链接
// @Description 删除指定导航链接
// @Tags 站内导航
// @Produce json
// @Security Bearer
// @Param id path int true "链接ID"
// @Success 200 {object} model.Response
// @Router /navigations/links/{id} [delete]
func (h *NavigationHandler) DeleteLink(c *gin.Context) {
	id, _ := strconv.Atoi(c.Param("id"))

	var link model.NavigationLink
	h.db.First(&link, id)

	if err := h.db.Delete(&model.NavigationLink{}, id).Error; err != nil {
		c.JSON(http.StatusInternalServerError, model.Response{
			Code:    500,
			Message: "删除失败",
		})
		return
	}

	// 更新分组链接数
	if link.GroupID > 0 {
		h.db.Model(&model.NavigationGroup{}).Where("id = ?", link.GroupID).
			UpdateColumn("link_count", h.db.Model(&model.NavigationLink{}).Where("group_id = ?", link.GroupID).Select("COUNT(*)"))
	}

	c.JSON(http.StatusOK, model.Response{
		Code:    200,
		Message: "删除成功",
	})
}

// ToggleFavorite 切换收藏状态
// @Summary 切换收藏状态
// @Description 切换导航链接的收藏状态
// @Tags 站内导航
// @Accept json
// @Produce json
// @Security Bearer
// @Param id path int true "链接ID"
// @Param request body model.ToggleFavoriteRequest true "收藏请求"
// @Success 200 {object} model.Response{data=model.NavigationLink}
// @Router /navigations/links/{id}/favorite [post]
func (h *NavigationHandler) ToggleFavorite(c *gin.Context) {
	id, _ := strconv.Atoi(c.Param("id"))

	var req model.ToggleFavoriteRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, model.Response{
			Code:    400,
			Message: "请求参数错误",
		})
		return
	}

	var link model.NavigationLink
	if err := h.db.First(&link, id).Error; err != nil {
		c.JSON(http.StatusNotFound, model.Response{
			Code:    404,
			Message: "链接不存在",
		})
		return
	}

	link.IsFavorite = req.IsFavorite
	if err := h.db.Save(&link).Error; err != nil {
		c.JSON(http.StatusInternalServerError, model.Response{
			Code:    500,
			Message: "操作失败",
		})
		return
	}

	c.JSON(http.StatusOK, model.Response{
		Code:    200,
		Message: "操作成功",
		Data:    link,
	})
}