package main

import (
	"ChatRoom/internal/rabbitmq"
	"ChatRoom/internal/redis"
	"ChatRoom/internal/ws"
	"log"
	"net/http"
	"os"
	"path/filepath"
	"time"
)

func main() {
	// 1. 初始化 RabbitMQ
	rabbitmqURL := os.Getenv("RABBITMQ_URL")
	if rabbitmqURL == "" {
		// 默认使用本地 Docker 启动的 RabbitMQ 配置 (admin/1218Zhengyaqi)
		rabbitmqURL = "amqp://admin:1218Zhengyaqi@localhost:5672/"
	}

	var rmq *rabbitmq.Client
	var err error
	maxRetries := 30
	for i := 0; i < maxRetries; i++ {
		rmq, err = rabbitmq.NewClient(rabbitmqURL)
		if err == nil {
			break
		}
		// 如果是 403 认证错误，重试也没用，直接报错退出
		if err.Error() == "Exception (403) Reason: \"username or password not allowed\"" {
			log.Fatalf("RabbitMQ 认证失败，请检查账号密码: %v", err)
		}

		log.Printf("RabbitMQ 连接失败 (尝试 %d/%d): %v, 2秒后重试...", i+1, maxRetries, err)
		time.Sleep(2 * time.Second)
	}

	if err != nil {
		log.Fatalf("RabbitMQ 连接最终失败: %v", err)
	}
	defer rmq.Close()

	// 1.5 初始化 Redis
	redisAddr := os.Getenv("REDIS_ADDR")
	if redisAddr == "" {
		redisAddr = "localhost:6379"
	}
	redisClient, err := redis.NewClient(redisAddr, "", 0)
	if err != nil {
		log.Fatalf("Redis 连接失败: %v", err)
	}
	defer redisClient.Close()

	// 2. WebSocket 路由
	http.HandleFunc("/ws", func(w http.ResponseWriter, r *http.Request) {
		ws.NewConnection(w, r, rmq, redisClient) // 传入 RabbitMQ 和 Redis 客户端
	})

	// 3. 静态文件服务（用于测试前端）
	webDir := "./web"
	if _, err := os.Stat(webDir); os.IsNotExist(err) {
		// 从 cmd/server 目录运行时，web 在项目根目录
		webDir = filepath.Join("..", "..", "web")
	}
	http.Handle("/", http.FileServer(http.Dir(webDir)))

	// 4. 启动服务
	port := os.Getenv("PORT")
	if port == "" {
		port = "8080"
	}
	log.Printf("服务启动: http://localhost:%s", port)
	log.Fatal(http.ListenAndServe(":"+port, nil))
}