package handler

import (
	"photowall/internal/service"
	"photowall/pkg/response"
	"strconv"

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

type RegionHandler struct {
	svc *service.RegionService
}

func NewRegionHandler(svc *service.RegionService) *RegionHandler {
	return &RegionHandler{svc: svc}
}

// List GET /api/regions?parent_id=0
func (h *RegionHandler) List(c *gin.Context) {
	parentID, _ := strconv.ParseUint(c.DefaultQuery("parent_id", "0"), 10, 64)
	list, err := h.svc.ListByParent(uint(parentID))
	if err != nil {
		response.Internal(c, err.Error())
		return
	}
	response.OK(c, list)
}

// Countries GET /api/regions/countries
func (h *RegionHandler) Countries(c *gin.Context) {
	list, err := h.svc.ListCountries()
	if err != nil {
		response.Internal(c, err.Error())
		return
	}
	response.OK(c, list)
}

// Path GET /api/regions/:id/path
func (h *RegionHandler) Path(c *gin.Context) {
	id, _ := strconv.ParseUint(c.Param("id"), 10, 64)
	path, err := h.svc.GetPath(uint(id))
	if err != nil {
		response.NotFound(c, "地区不存在")
		return
	}
	response.OK(c, path)
}

// Search GET /api/regions/search?keyword=xxx
func (h *RegionHandler) Search(c *gin.Context) {
	keyword := c.Query("keyword")
	if keyword == "" {
		response.BadRequest(c, "请输入搜索关键词")
		return
	}
	list, err := h.svc.Search(keyword, 20)
	if err != nil {
		response.Internal(c, err.Error())
		return
	}
	response.OK(c, list)
}