//go:build example
// +build example

package main

import (
	"log"
	"net/http"

	"git.toowon.com/jimmy/go-common/config"
	"git.toowon.com/jimmy/go-common/middleware"
	"git.toowon.com/jimmy/go-common/storage"
)

func main() {
	// 加载配置
	cfg, err := config.LoadFromFile("./config/example.json")
	if err != nil {
		log.Fatal("Failed to load config:", err)
	}

	// 优先演示本地存储（可直接运行）
	localStorage, err := storage.NewStorage(storage.StorageTypeLocal, cfg)
	if err != nil {
		log.Fatal("Failed to create Local storage:", err)
	}

	uploadHandler := storage.NewUploadHandler(storage.UploadHandlerConfig{
		Storage:      localStorage,
		MaxFileSize:  10 * 1024 * 1024, // 10MB
		AllowedExts:  []string{".jpg", ".jpeg", ".png", ".gif", ".pdf"},
		ObjectPrefix: "uploads/",
	})

	proxyHandler := storage.NewProxyHandler(localStorage)

	// 创建中间件链
	var corsConfig *middleware.CORSConfig
	if cfg.GetCORS() != nil {
		c := cfg.GetCORS()
		corsConfig = middleware.NewCORSConfig(
			c.AllowedOrigins,
			c.AllowedMethods,
			c.AllowedHeaders,
			c.ExposedHeaders,
			c.AllowCredentials,
			c.MaxAge,
		)
	}
	chain := middleware.NewChain(
		middleware.CORS(corsConfig),
		middleware.Timezone,
	)

	// 注册路由
	mux := http.NewServeMux()
	mux.Handle("/upload", chain.Then(uploadHandler))
	mux.Handle("/file", chain.Then(proxyHandler))

	log.Println("Local storage server started on :8080")
	log.Println("Upload: POST /upload")
	log.Println("View: GET /file?key=uploads/xxx.jpg")

	// 提示：OSS 需要你自行集成对应 SDK（当前 go-common 中仅提供接口框架）
	if _, err := storage.NewStorage(storage.StorageTypeOSS, cfg); err != nil {
		log.Printf("OSS storage not ready: %v", err)
	}

	// 演示MinIO存储
	minioStorage, err := storage.NewStorage(storage.StorageTypeMinIO, cfg)
	if err != nil {
		log.Printf("Failed to create MinIO storage: %v", err)
		log.Println("Note: MinIO SDK integration is required")
	} else {
		log.Printf("MinIO storage created: %v", minioStorage != nil)
	}

	// 演示对象键生成
	objectKey1 := storage.GenerateObjectKey("images/", "test.jpg")
	log.Printf("Object key 1: %s", objectKey1)

	objectKey2 := storage.GenerateObjectKeyWithDate("images", "test.jpg")
	log.Printf("Object key 2: %s", objectKey2)

	log.Fatal(http.ListenAndServe(":8080", mux))
}