package handler

import (
	"net/http"
	"os"

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

// VersionInfo 版本信息
type VersionInfo struct {
	Version   string `json:"version"`
	BuildTime string `json:"buildTime"`
	CommitSha string `json:"commitSha"`
	GoVersion string `json:"goVersion"`
}

// GetVersion 获取服务器版本信息
func GetVersion(c *gin.Context) {
	// 从环境变量读取版本信息（由 CI 构建时注入）
	version := os.Getenv("APP_VERSION")
	if version == "" {
		version = "dev"
	}

	buildTime := os.Getenv("APP_BUILD_TIME")
	if buildTime == "" {
		buildTime = "unknown"
	}

	commitSha := os.Getenv("APP_COMMIT_SHA")
	if commitSha == "" {
		commitSha = "unknown"
	}

	c.JSON(http.StatusOK, VersionInfo{
		Version:   version,
		BuildTime: buildTime,
		CommitSha: commitSha,
		GoVersion: "go1.22", // 可以通过 runtime.Version() 获取
	})
}