package media_test

import (
	"context"
	"fmt"
	"net"
	"os"
	"path/filepath"
	"testing"
	"time"

	"git.ilapage.cn/ila/yovision/Sense/server/app/sense/media"
	"git.ilapage.cn/ila/yovision/Sense/server/app/sense/media_shard"
	"gorm.io/driver/sqlite"
	"gorm.io/gorm"
)

func freeAddress(t *testing.T) string {
	t.Helper()
	listener, err := net.Listen("tcp", "127.0.0.1:0")
	if err != nil {
		t.Fatal(err)
	}
	address := listener.Addr().String()
	if err = listener.Close(); err != nil {
		t.Fatal(err)
	}
	return address
}

func startTestMediaMTX(t *testing.T, binary string) string {
	t.Helper()
	apiAddress, rtspAddress := freeAddress(t), freeAddress(t)
	configPath := filepath.Join(t.TempDir(), "mediamtx.yml")
	config := fmt.Sprintf("logLevel: warn\napi: true\napiAddress: %s\nrtspAddress: %s\nrtspTransports: [tcp]\nrtmp: false\nhls: false\nwebrtc: false\nsrt: false\nmoq: false\nplayback: false\npaths: {}\n", apiAddress, rtspAddress)
	if err := os.WriteFile(configPath, []byte(config), 0o600); err != nil {
		t.Fatal(err)
	}
	supervisor := media.NewSupervisor(binary, configPath)
	if err := supervisor.Start(context.Background()); err != nil {
		t.Fatal(err)
	}
	t.Cleanup(func() {
		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
		defer cancel()
		_ = supervisor.Stop(ctx)
	})
	controller, err := media.NewHTTPController("http://" + apiAddress)
	if err != nil {
		t.Fatal(err)
	}
	deadline := time.Now().Add(8 * time.Second)
	for {
		if err = controller.Health(context.Background()); err == nil {
			break
		}
		if time.Now().After(deadline) {
			t.Fatalf("MediaMTX did not become ready: %v", err)
		}
		time.Sleep(100 * time.Millisecond)
	}
	return "http://" + apiAddress
}

func TestTwoRealMediaMTXShardsAreIndependentlyUsable(t *testing.T) {
	binary := os.Getenv("SENSE_MEDIAMTX_TEST_BINARY")
	if binary == "" {
		t.Skip("set SENSE_MEDIAMTX_TEST_BINARY to run the real MediaMTX integration")
	}
	first, second := startTestMediaMTX(t, binary), startTestMediaMTX(t, binary)
	db, err := gorm.Open(sqlite.Open("file:real_media_shards?mode=memory&cache=shared"), &gorm.Config{})
	if err != nil {
		t.Fatal(err)
	}
	if err = db.AutoMigrate(&media_shard.Shard{}, &media_shard.Assignment{}); err != nil {
		t.Fatal(err)
	}
	service := media_shard.NewService(db, func(ctx context.Context, endpoint string) error {
		controller, buildErr := media.NewHTTPController(endpoint)
		if buildErr != nil {
			return buildErr
		}
		return controller.Health(ctx)
	})
	specs := []media_shard.Spec{{ID: "one", Name: "测试分片一", Mode: "external", ControlAPI: first, Capacity: 2}, {ID: "two", Name: "测试分片二", Mode: "external", ControlAPI: second, Capacity: 2}}
	if err = service.SyncSpecs(context.Background(), specs); err != nil {
		t.Fatal(err)
	}
	if err = service.RefreshAll(context.Background()); err != nil {
		t.Fatal(err)
	}
	for _, routeID := range []string{"route-a", "route-b", "route-c", "route-d"} {
		if _, err = service.EnsureAssignment(context.Background(), routeID); err != nil {
			t.Fatalf("assign %s: %v", routeID, err)
		}
	}
	result, err := service.List(context.Background())
	if err != nil {
		t.Fatal(err)
	}
	if result.Summary.Available != 2 || result.Summary.Assigned != 4 || result.Summary.Configured != 4 {
		t.Fatalf("unexpected real shard summary: %+v", result.Summary)
	}
}

func TestRealMediaMTXControlLifecycle(t *testing.T) {
	binary := os.Getenv("SENSE_MEDIAMTX_TEST_BINARY")
	if binary == "" {
		t.Skip("set SENSE_MEDIAMTX_TEST_BINARY to run the real MediaMTX integration")
	}
	apiAddress, rtspAddress := freeAddress(t), freeAddress(t)
	configPath := filepath.Join(t.TempDir(), "mediamtx.yml")
	config := fmt.Sprintf("logLevel: warn\napi: true\napiAddress: %s\nrtspAddress: %s\nrtspTransports: [tcp]\nrtmp: false\nhls: false\nwebrtc: false\nsrt: false\nmoq: false\nplayback: false\npaths: {}\n", apiAddress, rtspAddress)
	if err := os.WriteFile(configPath, []byte(config), 0o600); err != nil {
		t.Fatal(err)
	}
	controller, err := media.NewHTTPController("http://" + apiAddress)
	if err != nil {
		t.Fatal(err)
	}
	supervisor := media.NewSupervisor(binary, configPath)
	if err = supervisor.Start(context.Background()); err != nil {
		t.Fatal(err)
	}
	t.Cleanup(func() {
		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
		defer cancel()
		_ = supervisor.Stop(ctx)
	})
	deadline := time.Now().Add(8 * time.Second)
	for {
		err = controller.Health(context.Background())
		if err == nil {
			break
		}
		if time.Now().After(deadline) {
			t.Fatalf("MediaMTX did not become ready: %v", err)
		}
		time.Sleep(100 * time.Millisecond)
	}
	source := media.Source{Path: "sense_integration", URI: "rtsp://127.0.0.1:65530/test", Username: "synthetic-user", Password: "synthetic-password"}
	if err = controller.Apply(context.Background(), source); err != nil {
		t.Fatal(err)
	}
	if err = controller.Apply(context.Background(), source); err != nil {
		t.Fatalf("replace must be idempotent: %v", err)
	}
	if err = controller.Delete(context.Background(), source.Path); err != nil {
		t.Fatal(err)
	}
}