package handler

import (
	"net/http"

	"github.com/gin-gonic/gin"
	"github.com/wangjia/jiu/backend/internal/middleware"
	"github.com/wangjia/jiu/backend/internal/service"
)

type LicenseHandler struct {
	svc *service.LicenseService
}

func NewLicenseHandler(svc *service.LicenseService) *LicenseHandler {
	return &LicenseHandler{svc: svc}
}

// Activate POST /api/v1/license/activate
func (h *LicenseHandler) Activate(c *gin.Context) {
	var req struct {
		LicenseKey string `json:"license_key" binding:"required"`
		DeviceID   string `json:"device_id" binding:"required"`
	}
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}

	lic, err := h.svc.Activate(req.LicenseKey, req.DeviceID)
	if err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}
	c.JSON(http.StatusOK, gin.H{"data": lic})
}

// Verify GET /api/v1/license/verify
func (h *LicenseHandler) Verify(c *gin.Context) {
	shopID := middleware.GetShopID(c)
	deviceID := c.Query("device_id")
	if deviceID == "" {
		c.JSON(http.StatusBadRequest, gin.H{"error": "device_id required"})
		return
	}

	lic, err := h.svc.Verify(shopID, deviceID)
	if err != nil {
		c.JSON(http.StatusForbidden, gin.H{"error": err.Error()})
		return
	}
	c.JSON(http.StatusOK, gin.H{"data": lic})
}

// Info GET /api/v1/license/info — 当前门店授权概况（无需 device_id）
func (h *LicenseHandler) Info(c *gin.Context) {
	shopID := middleware.GetShopID(c)
	lic, err := h.svc.ShopInfo(shopID)
	if err != nil {
		c.JSON(http.StatusOK, gin.H{"data": nil})
		return
	}
	c.JSON(http.StatusOK, gin.H{"data": lic})
}

// Deactivate POST /api/v1/license/deactivate
func (h *LicenseHandler) Deactivate(c *gin.Context) {
	shopID := middleware.GetShopID(c)
	var req struct {
		DeviceID string `json:"device_id" binding:"required"`
	}
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
		return
	}

	if err := h.svc.Deactivate(shopID, req.DeviceID); err != nil {
		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
		return
	}
	c.JSON(http.StatusOK, gin.H{"message": "deactivated"})
}