package upgrade

import (
	"net/http"

	"mengstack/internal/app/version"

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

// Handler exposes升级检查接口。
type Handler struct {
	checker Checker
}

func NewHandler() *Handler {
	return &Handler{}
}

// SetChecker sets the upgrade checker implementation.
// Called when a concrete Checker is available.
func (h *Handler) SetChecker(c Checker) {
	h.checker = c
}

// Check godoc
// @Summary      升级检查
// @Description  检查是否有新版本可用（当前为预留接口，返回当前版本信息）
// @Tags         System
// @Produce      json
// @Success      200  {object}  UpgradeStatus
// @Router       /api/upgrade/check [get]
func (h *Handler) Check(c *gin.Context) {
	status := &UpgradeStatus{
		CurrentVersion: version.Version,
		Available:      false,
	}

	if h.checker != nil {
		result, err := h.checker.Check(version.Version)
		if err == nil {
			status = result
		}
	}

	c.JSON(http.StatusOK, status)
}