// agent-core 客户端核心：设备身份 + 凭据保险库 + WSS 长连接 + 平台执行器。
// 常驻模型：WinUI 壳 spawn 本进程 → 壳读 data/local.json（随机端口+token）→
// 经 localhost HTTP 控制（状态/配对/挑战）。CLI 亦可独立运行（-user/-pass 自动配对）。
package main

import (
	"context"
	"errors"
	"flag"
	"log"
	"os"
	"os/signal"
	"path/filepath"
	"strings"
	"sync"
	"syscall"

	"everypublish/agentcore/internal/config"
	"everypublish/agentcore/internal/device"
	"everypublish/agentcore/internal/exec"
	"everypublish/agentcore/internal/exec/bilibili"
	"everypublish/agentcore/internal/exec/douyin"
	"everypublish/agentcore/internal/exec/fake"
	"everypublish/agentcore/internal/exec/kuaishou"
	"everypublish/agentcore/internal/exec/xiaohongshu"
	"everypublish/agentcore/internal/localserver"
	"everypublish/agentcore/internal/pairing"
	"everypublish/agentcore/internal/vault"
	"everypublish/agentcore/internal/wsclient"
)

func main() {
	var (
		server   = flag.String("server", "", "服务器地址（默认取配置）")
		dir      = flag.String("dir", "./data", "数据目录（设备密钥/保险库/配置）")
		name     = flag.String("name", "", "设备名")
		user     = flag.String("user", "", "开发便利：自动配对登录邮箱")
		password = flag.String("pass", "", "开发便利：自动配对登录密码")
		simMS    = flag.Int("sim", 0, "假执行器模拟耗时 ms（0 用配置值）")
		token    = flag.String("local-token", "", "本机控制服务 token（默认随机）")
	)
	flag.Parse()

	cfg, err := config.Load(*dir)
	if err != nil {
		log.Fatalf("config: %v", err)
	}
	if *server != "" {
		cfg.Server = *server
	}
	if *name != "" {
		cfg.Name = *name
	}
	if *simMS > 0 {
		cfg.SimMS = *simMS
	}
	_ = cfg.Save(*dir)

	// 设备身份（私钥本机持久化 0600）
	id, err := device.LoadOrCreate(*dir, cfg.Name)
	if err != nil {
		log.Fatalf("device: %v", err)
	}
	cfg.Name = id.Name

	// 凭据保险库（平台 cookie/token 加密落盘）
	v, err := vault.Open(*dir)
	if err != nil {
		log.Fatalf("vault: %v", err)
	}

	// 执行器注册：B站无浏览器投稿 + 抖音/快手/小红书 CDP（D10/D11）；
	// fakeAll=true 时全部走假执行器（无真实账号的安装联调）。
	registry := exec.NewRegistry()
	if !cfg.FakeAll {
		browserRoot := filepath.Join(*dir, "browser") // 每账号独立档案
		registry.Register(bilibili.New(v))
		registry.Register(douyin.New(v, browserRoot, cfg.Proxy, "", false))
		registry.Register(kuaishou.New(v, browserRoot, cfg.Proxy, "", false))
		registry.Register(xiaohongshu.New(v, browserRoot, cfg.Proxy, "", false))
	}
	registry.SetFallback(fake.Executor{SimMS: cfg.SimMS})

	// WSS 客户端（重连/幂等/心跳）
	client := wsclient.New(cfg.Server, id, registry)

	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
	defer stop()

	// 连接启动（配对后；未配对时等壳调 /pair）
	var runOnce sync.Once
	startConn := func() {
		if id.DeviceID == 0 {
			return
		}
		runOnce.Do(func() {
			go func() { _ = client.Run(ctx) }()
		})
	}

	// 配对回调（本机控制服务 /pair 触发）
	pairFn := func(code, name string) error {
		if id.DeviceID > 0 {
			return errors.New("设备已配对")
		}
		name = strings.TrimSpace(name)
		if name == "" {
			name = cfg.Name
		}
		if name == "" {
			name, _ = os.Hostname()
		}
		if name == "" {
			name = "macOS Agent"
		}
		did, err := pairing.PairWithCode(cfg.Server, code, name, "core", "0.2.0", id.PublicKey)
		if err != nil {
			return err
		}
		id.DeviceID = did
		if name != "" {
			id.Name = name
			cfg.Name = name
		}
		if err = id.Save(*dir); err != nil {
			return err
		}
		log.Printf("paired device %d (name %s)", id.DeviceID, id.Name)
		startConn()
		return nil
	}

	// 开发便利：CLI 自动配对
	if id.DeviceID == 0 && *user != "" && *password != "" {
		did, err := pairing.AutoPair(cfg.Server, *user, *password, cfg.Name, id.PublicKey)
		if err != nil {
			log.Fatalf("auto pair: %v", err)
		}
		id.DeviceID = did
		if err = id.Save(*dir); err != nil {
			log.Fatalf("save identity: %v", err)
		}
		log.Printf("auto paired device %d", id.DeviceID)
	}

	startConn()

	// 本机控制服务（WinUI 壳入口）
	localToken := *token
	if localToken == "" {
		localToken = localserver.RandToken()
	}
	ls := localserver.New(client, pairFn, localToken, *dir, func() map[string]interface{} {
		return map[string]interface{}{
			"server":   cfg.Server,
			"deviceId": id.DeviceID,
			"name":     id.Name,
		}
	})
	go func() {
		if err = ls.Listen(); err != nil {
			log.Fatalf("local server: %v", err)
		}
	}()

	if id.DeviceID == 0 {
		log.Printf("agent-core started UNPAIRED: server=%s（请在客户端输入网页端配对码）", cfg.Server)
	} else {
		log.Printf("agent-core started: server=%s device=%d", cfg.Server, id.DeviceID)
	}
	<-ctx.Done()
	log.Println("agent-core stopped")
}