package main

import (
	"net/http"
	"net/http/httptest"
	"os"
	"path/filepath"
	"strings"
	"testing"
)

func TestMediaHealthAndSessionLifecycle(t *testing.T) {
	store, err := newSessionStore(t.TempDir())
	if err != nil {
		t.Fatalf("newSessionStore: %v", err)
	}

	server := newMediaServer(store)

	healthReq := httptest.NewRequest(http.MethodGet, "/media/health", nil)
	healthRes := httptest.NewRecorder()
	server.routes().ServeHTTP(healthRes, healthReq)
	if healthRes.Code != http.StatusOK {
		t.Fatalf("expected health 200, got %d", healthRes.Code)
	}

	session, err := store.createSession(CreateSessionRequest{
		UserID:        "1",
		Title:         "Test Session",
		Format:        "webm",
		MimeType:      "video/webm",
		QualityPreset: "balanced",
		FacingMode:    "environment",
		DeviceKind:    "desktop",
	})
	if err != nil {
		t.Fatalf("createSession: %v", err)
	}

	if _, err := store.updateSession(session.ID, func(current *Session) error {
		current.Segments = append(current.Segments, SegmentMeta{
			Sequence:    0,
			Filename:    "000000.webm",
			DurationMS:  60000,
			SizeBytes:   7,
			ContentType: "video/webm",
		})
		current.Markers = append(current.Markers, Marker{
			ID:        "marker-1",
			Type:      "manual",
			Label:     "关键片段",
			Timestamp: 5000,
			CreatedAt: "2026-03-14T00:00:00Z",
		})
		return nil
	}); err != nil {
		t.Fatalf("updateSession: %v", err)
	}

	if err := os.WriteFile(filepath.Join(store.segmentsDir(session.ID), "000000.webm"), []byte("segment"), 0o644); err != nil {
		t.Fatalf("write segment: %v", err)
	}

	current, err := store.getSession(session.ID)
	if err != nil {
		t.Fatalf("getSession: %v", err)
	}
	if current.UploadedSegments != 1 {
		t.Fatalf("expected uploaded segment count to be recomputed")
	}
	if current.UploadedBytes != 7 {
		t.Fatalf("expected uploaded bytes to be recomputed, got %d", current.UploadedBytes)
	}
}

func TestProcessSessionArchivesPlayback(t *testing.T) {
	tempDir := t.TempDir()
	store, err := newSessionStore(tempDir)
	if err != nil {
		t.Fatalf("newSessionStore: %v", err)
	}

	session, err := store.createSession(CreateSessionRequest{UserID: "1", Title: "Archive Session"})
	if err != nil {
		t.Fatalf("createSession: %v", err)
	}

	if err := os.WriteFile(filepath.Join(store.segmentsDir(session.ID), "000000.webm"), []byte("segment"), 0o644); err != nil {
		t.Fatalf("write segment: %v", err)
	}

	if _, err := store.updateSession(session.ID, func(current *Session) error {
		current.Segments = append(current.Segments, SegmentMeta{
			Sequence:    0,
			Filename:    "000000.webm",
			DurationMS:  60000,
			SizeBytes:   7,
			ContentType: "video/webm",
		})
		current.ArchiveStatus = ArchiveQueued
		return nil
	}); err != nil {
		t.Fatalf("updateSession: %v", err)
	}

	fakeFFmpeg := filepath.Join(tempDir, "ffmpeg")
	script := "#!/bin/sh\ninput=''\noutput=''\nprev=''\nfor arg in \"$@\"; do\n  if [ \"$prev\" = '-i' ]; then input=\"$arg\"; fi\n  prev=\"$arg\"\n  output=\"$arg\"\ndone\nif [ -n \"$input\" ] && [ -f \"$input\" ]; then cp \"$input\" \"$output\"; else : > \"$output\"; fi\n"
	if err := os.WriteFile(fakeFFmpeg, []byte(script), 0o755); err != nil {
		t.Fatalf("write fake ffmpeg: %v", err)
	}

	originalPath := os.Getenv("PATH")
	t.Setenv("PATH", tempDir+string(os.PathListSeparator)+originalPath)

	if err := processSession(store, session.ID); err != nil {
		t.Fatalf("processSession: %v", err)
	}

	archived, err := store.getSession(session.ID)
	if err != nil {
		t.Fatalf("getSession: %v", err)
	}

	if archived.ArchiveStatus != ArchiveCompleted {
		t.Fatalf("expected archive completed, got %s", archived.ArchiveStatus)
	}
	if archived.Playback.WebMURL == "" || !strings.HasSuffix(archived.Playback.WebMURL, ".webm") {
		t.Fatalf("expected webm playback url, got %#v", archived.Playback)
	}
}