671 lines
20 KiB
Dart
671 lines
20 KiB
Dart
import 'dart:io';
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import 'package:cached_network_image/cached_network_image.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter_cache_manager/flutter_cache_manager.dart';
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import 'package:flutter_lucide/flutter_lucide.dart';
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import 'package:http/http.dart' as http;
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import 'package:video_player/video_player.dart';
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import '../../core/auth/auth_service.dart';
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import '../../core/log/app_logger.dart';
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import '../../core/theme/app_colors.dart';
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import '../../core/theme/app_spacing.dart';
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import '../../core/theme/app_typography.dart';
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import '../../core/user/account_refresh.dart';
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import '../../core/user/user_state.dart';
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import '../../features/home/home_playback_resume.dart';
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import '../../features/home/models/task_item.dart';
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import '../../shared/widgets/top_nav_bar.dart';
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import '../../core/api/services/image_api.dart';
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import 'widgets/album_picker_sheet.dart';
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/// Generate Video screen - matches Pencil mmLB5
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class GenerateVideoScreen extends StatefulWidget {
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const GenerateVideoScreen({super.key, this.task});
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static final _log = AppLogger('GenerateVideo');
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final TaskItem? task;
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@override
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State<GenerateVideoScreen> createState() => _GenerateVideoScreenState();
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}
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enum _Resolution { p480, p720 }
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class _GenerateVideoScreenState extends State<GenerateVideoScreen> {
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_Resolution _selectedResolution = _Resolution.p480;
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bool _isGenerating = false;
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int get _currentCredits {
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final task = widget.task;
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if (task == null) return 50;
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switch (_selectedResolution) {
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case _Resolution.p480:
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return task.credits480p ?? 50;
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case _Resolution.p720:
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return task.credits720p ?? 50;
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}
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}
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String get _heatmap =>
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_selectedResolution == _Resolution.p480 ? '480p' : '720p';
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bool get _hasVideo {
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final url = widget.task?.previewVideoUrl;
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return url != null && url.isNotEmpty;
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}
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@override
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void initState() {
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super.initState();
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refreshAccount();
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WidgetsBinding.instance.addPostFrameCallback((_) {
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GenerateVideoScreen._log.d('opened with task: ${widget.task}');
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});
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}
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@override
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void dispose() {
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// 从本页 pop（含关闭相册后再返回首页）时，底层首页需重新触发可见性；仅 [RouteAware.didPopNext] 有时序不足
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homePlaybackResumeNonce.value++;
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super.dispose();
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}
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/// Click flow per docs/generate_video.md: tap Generate Video -> image picker
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/// (camera or gallery) -> after image selected -> proceed to API.
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Future<void> _onGenerateButtonTap() async {
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if (_isGenerating) return;
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final userCredits = UserState.credits.value ?? 0;
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if (userCredits < _currentCredits) {
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if (mounted) {
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Navigator.of(context).pushNamed('/recharge');
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}
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return;
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}
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final path = await showModalBottomSheet<String>(
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context: context,
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isScrollControlled: true,
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backgroundColor: Colors.transparent,
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builder: (ctx) => SizedBox(
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height: MediaQuery.sizeOf(ctx).height * 0.92,
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child: const AlbumPickerSheet(),
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),
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);
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if (path == null || path.isEmpty || !mounted) return;
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final file = File(path);
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await _runGenerationApi(file);
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}
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Future<void> _runGenerationApi(File file) async {
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setState(() => _isGenerating = true);
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try {
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await AuthService.loginComplete;
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final size = await file.length();
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final ext = file.path.split('.').last.toLowerCase();
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final contentType = ext == 'png'
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? 'image/png'
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: ext == 'gif'
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? 'image/gif'
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: 'image/jpeg';
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final fileName = 'img_${DateTime.now().millisecondsSinceEpoch}.$ext';
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final presignedRes = await ImageApi.getUploadPresignedUrl(
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fileName1: fileName,
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contentType: contentType,
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expectedSize: size,
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);
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if (!presignedRes.isSuccess || presignedRes.data == null) {
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throw Exception(presignedRes.msg.isNotEmpty
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? presignedRes.msg
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: 'Failed to get upload URL');
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}
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final data = presignedRes.data as Map<String, dynamic>;
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final uploadUrl =
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data['bolster'] as String? ?? data['expound'] as String?;
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final filePath = data['recruit'] as String? ?? data['train'] as String?;
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final requiredHeaders = data['remap'] as Map<String, dynamic>?;
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if (uploadUrl == null ||
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uploadUrl.isEmpty ||
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filePath == null ||
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filePath.isEmpty) {
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throw Exception('Invalid presigned URL response');
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}
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final headers = <String, String>{};
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if (requiredHeaders != null) {
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for (final e in requiredHeaders.entries) {
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headers[e.key] = e.value?.toString() ?? '';
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}
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}
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if (!headers.containsKey('Content-Type')) {
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headers['Content-Type'] = contentType;
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}
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final bytes = await file.readAsBytes();
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final uploadResponse = await http.put(
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Uri.parse(uploadUrl),
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headers: headers,
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body: bytes,
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);
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if (uploadResponse.statusCode < 200 || uploadResponse.statusCode >= 300) {
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throw Exception('Upload failed: ${uploadResponse.statusCode}');
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}
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final userId = UserState.userId.value;
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if (userId == null || userId.isEmpty) {
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throw Exception('User not logged in');
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}
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final templateName = widget.task?.templateName ?? '';
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final createRes = await ImageApi.createTask(
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asset: userId,
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guild: filePath,
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allowance: false,
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cipher: widget.task?.taskType ?? '',
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congregation: templateName == 'BananaTask' ? null : templateName,
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heatmap: _heatmap,
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ext: widget.task?.ext,
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);
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if (!createRes.isSuccess) {
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throw Exception(
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createRes.msg.isNotEmpty ? createRes.msg : 'Failed to create task');
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}
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final taskData = createRes.data as Map<String, dynamic>?;
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final taskId = taskData?['tree'];
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// 创建任务成功后刷新用户账户信息（积分等）
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await refreshAccount();
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if (!mounted) return;
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Navigator.of(context).pushReplacementNamed(
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'/progress',
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arguments: <String, dynamic>{'taskId': taskId, 'imagePath': file.path},
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);
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} catch (e, st) {
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GenerateVideoScreen._log.e('Generate failed', e, st);
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if (mounted) {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(
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content: Text(
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'Generation failed: ${e.toString().replaceAll('Exception: ', '')}'),
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behavior: SnackBarBehavior.floating,
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),
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);
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}
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} finally {
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if (mounted) {
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setState(() => _isGenerating = false);
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}
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}
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}
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@override
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Widget build(BuildContext context) {
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final topInset = MediaQuery.paddingOf(context).top;
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final creditsDisplay =
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UserCreditsData.of(context)?.creditsDisplay ?? '--';
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return Scaffold(
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extendBodyBehindAppBar: true,
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backgroundColor: Colors.black,
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appBar: PreferredSize(
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preferredSize: Size.fromHeight(topInset + 56),
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child: Container(
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padding: EdgeInsets.only(top: topInset),
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decoration: BoxDecoration(
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gradient: LinearGradient(
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begin: Alignment.topCenter,
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end: Alignment.bottomCenter,
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colors: [
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Colors.black.withValues(alpha: 0.72),
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Colors.black.withValues(alpha: 0.35),
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Colors.black.withValues(alpha: 0.0),
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],
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stops: const [0.0, 0.55, 1.0],
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),
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),
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child: SizedBox(
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height: 56,
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child: TopNavBar(
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title: 'Generate',
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credits: creditsDisplay,
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onCreditsTap: () => Navigator.of(context).pushNamed('/recharge'),
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showBackButton: true,
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onBack: () => Navigator.of(context).pop(),
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backgroundColor: Colors.transparent,
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foregroundColor: AppColors.surface,
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),
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),
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),
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),
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body: Stack(
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fit: StackFit.expand,
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children: [
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_GenerateFullScreenBackground(
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videoUrl: widget.task?.previewVideoUrl,
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imageUrl: widget.task?.previewImageUrl,
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),
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Positioned.fill(
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child: DecoratedBox(
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decoration: BoxDecoration(
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gradient: LinearGradient(
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begin: Alignment.topCenter,
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end: Alignment.bottomCenter,
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colors: [
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Colors.black.withValues(alpha: 0.12),
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Colors.black.withValues(alpha: 0.55),
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],
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stops: const [0.45, 1.0],
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),
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),
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),
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),
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SafeArea(
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child: Padding(
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padding: const EdgeInsets.fromLTRB(
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AppSpacing.screenPaddingLarge,
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AppSpacing.lg,
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AppSpacing.screenPaddingLarge,
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AppSpacing.screenPaddingLarge,
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),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.stretch,
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children: [
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const Spacer(),
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if (_hasVideo)
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Center(
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child: _ResolutionToggle(
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selected: _selectedResolution,
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onChanged: (r) =>
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setState(() => _selectedResolution = r),
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),
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),
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if (_hasVideo) const SizedBox(height: AppSpacing.xxl),
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_GenerateButton(
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onGenerate: _onGenerateButtonTap,
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isLoading: _isGenerating,
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credits: _currentCredits.toString(),
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),
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],
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),
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),
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),
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],
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),
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);
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}
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}
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/// 列表传入的预览图/视频：全屏背景层，超出视口 [BoxFit.cover] 裁切。
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class _GenerateFullScreenBackground extends StatefulWidget {
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const _GenerateFullScreenBackground({
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this.videoUrl,
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this.imageUrl,
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});
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final String? videoUrl;
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final String? imageUrl;
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@override
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State<_GenerateFullScreenBackground> createState() =>
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_GenerateFullScreenBackgroundState();
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}
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class _GenerateFullScreenBackgroundState
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extends State<_GenerateFullScreenBackground> {
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VideoPlayerController? _controller;
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@override
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void initState() {
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super.initState();
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if (widget.videoUrl != null && widget.videoUrl!.isNotEmpty) {
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_loadAndPlay();
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}
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}
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@override
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void dispose() {
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_controller?.dispose();
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_controller = null;
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super.dispose();
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}
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@override
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void didUpdateWidget(covariant _GenerateFullScreenBackground oldWidget) {
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super.didUpdateWidget(oldWidget);
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if (oldWidget.videoUrl != widget.videoUrl) {
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_controller?.dispose();
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_controller = null;
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if (widget.videoUrl != null && widget.videoUrl!.isNotEmpty) {
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_loadAndPlay();
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}
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}
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}
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Future<void> _loadAndPlay() async {
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final url = widget.videoUrl;
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if (url == null || url.isEmpty) return;
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setState(() {});
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try {
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final file = await DefaultCacheManager().getSingleFile(url);
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if (!mounted) return;
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final controller = VideoPlayerController.file(
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file,
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videoPlayerOptions: VideoPlayerOptions(mixWithOthers: true),
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);
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await controller.initialize();
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if (!mounted) return;
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await controller.setVolume(1.0);
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await controller.setLooping(true);
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await controller.play();
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if (mounted) {
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setState(() {
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_controller = controller;
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});
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}
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} catch (e) {
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GenerateVideoScreen._log.e('Video load failed', e);
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if (mounted) setState(() {});
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}
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}
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@override
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Widget build(BuildContext context) {
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final isReady = _controller != null && _controller!.value.isInitialized;
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final hasVideo = widget.videoUrl != null && widget.videoUrl!.isNotEmpty;
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final hasImage = widget.imageUrl != null && widget.imageUrl!.isNotEmpty;
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return Stack(
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fit: StackFit.expand,
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children: [
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if (!hasVideo && hasImage)
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Positioned.fill(
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child: CachedNetworkImage(
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imageUrl: widget.imageUrl!,
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fit: BoxFit.cover,
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width: double.infinity,
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height: double.infinity,
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placeholder: (_, __) => const _BgLoadingPlaceholder(),
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errorWidget: (_, __, ___) => const _BgErrorPlaceholder(),
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),
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)
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else if (hasVideo && isReady)
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Positioned.fill(
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child: ClipRect(
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child: FittedBox(
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fit: BoxFit.cover,
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child: SizedBox(
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width: _controller!.value.size.width,
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height: _controller!.value.size.height,
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child: VideoPlayer(_controller!),
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),
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),
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),
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)
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else if (hasVideo && hasImage)
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Positioned.fill(
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child: CachedNetworkImage(
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imageUrl: widget.imageUrl!,
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fit: BoxFit.cover,
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width: double.infinity,
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height: double.infinity,
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placeholder: (_, __) => const _BgLoadingPlaceholder(),
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errorWidget: (_, __, ___) => const _BgErrorPlaceholder(),
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),
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)
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else if (hasVideo)
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const Positioned.fill(child: _BgLoadingPlaceholder())
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else
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const Positioned.fill(child: _BgErrorPlaceholder()),
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],
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);
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}
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}
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class _BgLoadingPlaceholder extends StatelessWidget {
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const _BgLoadingPlaceholder();
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@override
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Widget build(BuildContext context) {
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return Container(
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color: AppColors.textPrimary,
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alignment: Alignment.center,
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child: const SizedBox(
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width: 40,
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height: 40,
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child: CircularProgressIndicator(
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strokeWidth: 2,
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color: AppColors.surface,
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),
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),
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);
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}
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}
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class _BgErrorPlaceholder extends StatelessWidget {
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const _BgErrorPlaceholder();
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@override
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Widget build(BuildContext context) {
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return Container(
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color: AppColors.textPrimary,
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alignment: Alignment.center,
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child: Icon(
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LucideIcons.image_off,
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size: 56,
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color: AppColors.surface.withValues(alpha: 0.45),
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),
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);
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}
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}
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/// Resolution row - 1:1 match Pencil oYwsm: label + 480P/720P on same row.
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/// Button: height 36, cornerRadius 18, padding 8x16, gap 12 label-to-btns, gap 8 between btns.
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class _ResolutionToggle extends StatelessWidget {
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const _ResolutionToggle({
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required this.selected,
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required this.onChanged,
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});
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final _Resolution selected;
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final ValueChanged<_Resolution> onChanged;
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@override
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Widget build(BuildContext context) {
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return SizedBox(
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height: 44,
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child: Row(
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mainAxisSize: MainAxisSize.min,
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crossAxisAlignment: CrossAxisAlignment.center,
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children: [
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Text(
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'Resolution',
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style: AppTypography.bodyMedium.copyWith(
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fontSize: 14,
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color: AppColors.surface,
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fontWeight: FontWeight.w600,
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),
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),
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const SizedBox(width: 12),
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_ResolutionOption(
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label: '480P',
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isSelected: selected == _Resolution.p480,
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onTap: () => onChanged(_Resolution.p480),
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),
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const SizedBox(width: 8),
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_ResolutionOption(
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label: '720P',
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isSelected: selected == _Resolution.p720,
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onTap: () => onChanged(_Resolution.p720),
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),
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],
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),
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);
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}
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}
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class _ResolutionOption extends StatelessWidget {
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const _ResolutionOption({
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required this.label,
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required this.isSelected,
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required this.onTap,
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});
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final String label;
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final bool isSelected;
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final VoidCallback onTap;
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@override
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Widget build(BuildContext context) {
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return GestureDetector(
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onTap: onTap,
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child: Container(
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height: 36,
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padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
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decoration: BoxDecoration(
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color: isSelected
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? AppColors.primaryGlass
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: AppColors.surface.withValues(alpha: 0.18),
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borderRadius: BorderRadius.circular(18),
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border: isSelected
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? Border.all(
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color: AppColors.primary.withValues(alpha: 0.42),
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width: 1)
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: Border.all(
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color: AppColors.surface.withValues(alpha: 0.45),
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width: 1,
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),
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boxShadow: isSelected
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? [
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BoxShadow(
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color: AppColors.primaryShadow.withValues(alpha: 0.22),
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blurRadius: 4,
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offset: const Offset(0, 2),
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),
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]
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: null,
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),
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alignment: Alignment.center,
|
||
child: Text(
|
||
label,
|
||
style: AppTypography.bodyMedium.copyWith(
|
||
fontSize: 13,
|
||
color: isSelected
|
||
? AppColors.surface
|
||
: AppColors.surface.withValues(alpha: 0.85),
|
||
fontWeight: isSelected ? FontWeight.w600 : FontWeight.w500,
|
||
),
|
||
),
|
||
),
|
||
);
|
||
}
|
||
}
|
||
|
||
class _GenerateButton extends StatelessWidget {
|
||
const _GenerateButton({
|
||
required this.onGenerate,
|
||
this.isLoading = false,
|
||
this.credits = '50',
|
||
});
|
||
|
||
final VoidCallback onGenerate;
|
||
final bool isLoading;
|
||
final String credits;
|
||
|
||
@override
|
||
Widget build(BuildContext context) {
|
||
return GestureDetector(
|
||
onTap: isLoading ? null : onGenerate,
|
||
child: Opacity(
|
||
opacity: isLoading ? 0.6 : 1,
|
||
child: Container(
|
||
height: 56,
|
||
decoration: BoxDecoration(
|
||
color: AppColors.primaryGlassEmphasis,
|
||
borderRadius: BorderRadius.circular(16),
|
||
border: Border.all(
|
||
color: AppColors.primary.withValues(alpha: 0.45),
|
||
width: 1,
|
||
),
|
||
boxShadow: [
|
||
BoxShadow(
|
||
color: AppColors.primaryShadow.withValues(alpha: 0.28),
|
||
blurRadius: 8,
|
||
offset: const Offset(0, 2),
|
||
),
|
||
],
|
||
),
|
||
child: Row(
|
||
mainAxisAlignment: MainAxisAlignment.center,
|
||
children: [
|
||
if (isLoading)
|
||
const SizedBox(
|
||
width: 24,
|
||
height: 24,
|
||
child: CircularProgressIndicator(
|
||
strokeWidth: 2,
|
||
color: AppColors.surface,
|
||
),
|
||
)
|
||
else
|
||
Text(
|
||
'Generate',
|
||
style: AppTypography.bodyMedium.copyWith(
|
||
color: AppColors.surface,
|
||
),
|
||
),
|
||
if (!isLoading) ...[
|
||
const SizedBox(width: AppSpacing.md),
|
||
Container(
|
||
padding: const EdgeInsets.symmetric(
|
||
horizontal: 10,
|
||
vertical: AppSpacing.xs,
|
||
),
|
||
decoration: BoxDecoration(
|
||
color: AppColors.surface.withValues(alpha: 0.2),
|
||
borderRadius: BorderRadius.circular(8),
|
||
),
|
||
child: Row(
|
||
mainAxisSize: MainAxisSize.min,
|
||
children: [
|
||
const Icon(
|
||
LucideIcons.sparkles,
|
||
size: 16,
|
||
color: AppColors.surface,
|
||
),
|
||
const SizedBox(width: AppSpacing.xs),
|
||
Text(
|
||
credits,
|
||
style: AppTypography.bodyRegular.copyWith(
|
||
color: AppColors.surface,
|
||
fontWeight: FontWeight.w600,
|
||
),
|
||
),
|
||
],
|
||
),
|
||
),
|
||
],
|
||
],
|
||
),
|
||
),
|
||
),
|
||
);
|
||
}
|
||
}
|