package web

import (
	"net/http"
	"net/url"
	"time"

	"github.com/gin-gonic/gin"

	"cmautobuy/admin/service"
)

func (h *Handler) ShopList(c *gin.Context) {
	result, err := service.ListShops(h.db, currentUser(c))
	if err != nil {
		fail(c, http.StatusInternalServerError, "读取店铺管理数据失败，数据没有被改动。")
		return
	}
	c.HTML(http.StatusOK, "shop/list", page(c, "shops", "店铺管理", gin.H{
		"Rows": result.Items, "UnlinkedShopeeCount": result.UnlinkedShopeeCount,
		"Message": c.Query("msg"), "Error": c.Query("error"),
	}))
}

func (h *Handler) ShopCreate(c *gin.Context) {
	err := service.CreateShop(h.db, currentUser(c), c.PostForm("display_name"),
		c.PostForm("syb_alias"), c.PostForm("shopee_alias"), time.Now())
	if err != nil {
		if service.IsValidationError(err) {
			redirectShops(c, "", err.Error())
			return
		}
		fail(c, http.StatusInternalServerError, "新增店铺失败，已有数据没有被改动。")
		return
	}
	redirectShops(c, "店铺已新增；历史数据已按渠道原始名称精确关联", "")
}

func (h *Handler) ShopUpdate(c *gin.Context) {
	err := service.UpdateShop(h.db, currentUser(c), c.PostForm("shop_id"), c.PostForm("display_name"),
		c.PostForm("syb_alias"), c.PostForm("shopee_alias"), time.Now())
	if err != nil {
		if service.IsValidationError(err) {
			redirectShops(c, "", err.Error())
			return
		}
		fail(c, http.StatusInternalServerError, "保存店铺失败，原配置保持不变。")
		return
	}
	redirectShops(c, "店铺名称和渠道关联已保存", "")
}

func (h *Handler) ShopStatus(c *gin.Context) {
	enabled := c.PostForm("enabled") == "1"
	if err := service.SetShopEnabled(h.db, currentUser(c), c.PostForm("shop_id"), enabled, time.Now()); err != nil {
		if service.IsValidationError(err) {
			redirectShops(c, "", err.Error())
			return
		}
		fail(c, http.StatusInternalServerError, "更新店铺状态失败，原状态保持不变。")
		return
	}
	message := "业务店铺已停用；SYB 不再同步该店铺"
	if enabled {
		message = "业务店铺已启用"
	}
	redirectShops(c, message, "")
}

func (h *Handler) ShopSybStatus(c *gin.Context) {
	enabled := c.PostForm("enabled") == "1"
	if err := service.SetShopSybEnabled(h.db, currentUser(c), c.PostForm("shop_id"), enabled, time.Now()); err != nil {
		if service.IsValidationError(err) {
			redirectShops(c, "", err.Error())
			return
		}
		fail(c, http.StatusInternalServerError, "更新 SYB 同步状态失败，原状态保持不变。")
		return
	}
	message := "SYB 同步已停用"
	if enabled {
		message = "SYB 同步已启用"
	}
	redirectShops(c, message, "")
}

func (h *Handler) ShopDelete(c *gin.Context) {
	if err := service.DeleteShop(h.db, currentUser(c), c.PostForm("shop_id")); err != nil {
		if service.IsValidationError(err) {
			redirectShops(c, "", err.Error())
			return
		}
		fail(c, http.StatusInternalServerError, "删除店铺失败，已有数据没有被改动。")
		return
	}
	redirectShops(c, "已删除没有关联数据的停用店铺", "")
}

func redirectShops(c *gin.Context, message, errorMessage string) {
	values := url.Values{}
	if message != "" {
		values.Set("msg", message)
	}
	if errorMessage != "" {
		values.Set("error", errorMessage)
	}
	target := "/shops"
	if encoded := values.Encode(); encoded != "" {
		target += "?" + encoded
	}
	c.Redirect(http.StatusSeeOther, target)
}