526 lines
15 KiB
Dart
526 lines
15 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:novyronst/common/const/const_color.dart';
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import 'package:novyronst/common/model/ny_drama_model.dart';
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import 'package:novyronst/tools/widgets/novy_com_widget.dart';
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import 'package:video_player/video_player.dart';
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class PlayerView extends StatefulWidget {
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const PlayerView({
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super.key,
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required this.videos,
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this.initialIndex = 0,
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this.onPageChanged,
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this.onCollectTap,
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this.isLoadingMore = false,
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this.isActive = true,
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this.bottomMetaSpacing = 76,
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this.progressHeaderBuilder,
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});
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final List<NyDramaModel> videos;
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final int initialIndex;
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final ValueChanged<int>? onPageChanged;
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final ValueChanged<int>? onCollectTap;
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final bool isLoadingMore;
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final bool isActive;
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final double bottomMetaSpacing;
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final Widget Function(BuildContext context, NyDramaModel drama, int index)?
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progressHeaderBuilder;
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@override
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State<PlayerView> createState() => _PlayerViewState();
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}
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class _PlayerViewState extends State<PlayerView> {
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late final PageController _pageController;
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final Map<int, VideoPlayerController> _controllers = {};
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final Map<int, Future<VideoPlayerController?>> _initializingControllers = {};
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int _currentIndex = 0;
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@override
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void initState() {
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super.initState();
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_currentIndex = widget.videos.isEmpty
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? 0
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: widget.initialIndex.clamp(0, widget.videos.length - 1);
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_pageController = PageController(initialPage: _currentIndex);
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_cachePlaybackWindow(_currentIndex);
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widget.isActive ? _playActiveVideo() : _pauseAllVideos();
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}
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@override
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void didUpdateWidget(covariant PlayerView oldWidget) {
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super.didUpdateWidget(oldWidget);
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if (widget.videos.isEmpty) return;
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if (oldWidget.initialIndex != widget.initialIndex) {
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_currentIndex = widget.initialIndex.clamp(0, widget.videos.length - 1);
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if (_pageController.hasClients) {
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_jumpToPageAfterBuild(_currentIndex);
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}
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}
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if (_currentIndex >= widget.videos.length) {
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_currentIndex = widget.videos.length - 1;
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}
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_cachePlaybackWindow(_currentIndex);
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widget.isActive ? _playActiveVideo() : _pauseAllVideos();
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}
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@override
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void dispose() {
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_pageController.dispose();
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for (final controller in _controllers.values) {
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controller
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..removeListener(_handleControllerChanged)
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..dispose();
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}
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_controllers.clear();
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_initializingControllers.clear();
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super.dispose();
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}
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Future<void> _cachePlaybackWindow(int index) async {
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final keepIndexes = <int>{index};
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if (index + 1 < widget.videos.length) {
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keepIndexes.add(index + 1);
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}
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final disposeIndexes = _controllers.keys
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.where((controllerIndex) => !keepIndexes.contains(controllerIndex))
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.toList();
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for (final controllerIndex in disposeIndexes) {
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final controller = _controllers.remove(controllerIndex);
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_initializingControllers.remove(controllerIndex);
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controller
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?..removeListener(_handleControllerChanged)
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..dispose();
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}
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await _ensureController(index);
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if (index + 1 < widget.videos.length) {
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await _ensureController(index + 1);
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}
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}
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Future<VideoPlayerController?> _ensureController(int index) async {
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if (index < 0 || index >= widget.videos.length) return null;
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final cachedController = _controllers[index];
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if (cachedController != null) {
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if (cachedController.value.isInitialized) return cachedController;
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final initializingController = _initializingControllers[index];
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if (initializingController != null) return initializingController;
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return cachedController;
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}
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final videoUrl = resolveDramaVideoUrl(widget.videos[index]);
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if (videoUrl == null) return null;
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final controller = VideoPlayerController.networkUrl(Uri.parse(videoUrl));
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_controllers[index] = controller;
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controller.addListener(_handleControllerChanged);
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final initializingController = _initializeController(index, controller);
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_initializingControllers[index] = initializingController;
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return initializingController;
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}
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Future<VideoPlayerController?> _initializeController(
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int index,
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VideoPlayerController controller,
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) async {
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try {
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await controller.initialize();
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await controller.setLooping(true);
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if (!mounted || _controllers[index] != controller) return controller;
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_initializingControllers.remove(index);
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setState(() {});
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if (index == _currentIndex &&
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shouldPlayActiveVideo(
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controller.value,
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isPageActive: widget.isActive,
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)) {
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await controller.play();
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}
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} catch (_) {
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if (_controllers[index] == controller) {
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_controllers.remove(index);
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}
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_initializingControllers.remove(index);
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controller
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..removeListener(_handleControllerChanged)
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..dispose();
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if (mounted) setState(() {});
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return null;
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}
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return controller;
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}
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Future<void> _playActiveVideo() async {
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if (!widget.isActive) {
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await _pauseAllVideos();
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return;
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}
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for (final entry in _controllers.entries) {
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if (entry.key != _currentIndex && entry.value.value.isPlaying) {
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await entry.value.pause();
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}
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}
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final controller = await _ensureController(_currentIndex);
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if (!mounted ||
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controller == null ||
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_currentIndex >= widget.videos.length) {
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return;
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}
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if (shouldPlayActiveVideo(
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controller.value,
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isPageActive: widget.isActive,
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)) {
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await controller.play();
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}
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}
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Future<void> _pauseAllVideos() async {
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for (final controller in _controllers.values) {
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if (controller.value.isPlaying) {
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await controller.pause();
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}
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}
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}
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void _handleControllerChanged() {
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if (mounted) {
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setState(() {});
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}
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}
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void _handlePageChanged(int index) {
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if (index == _currentIndex) return;
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_currentIndex = index;
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widget.onPageChanged?.call(index);
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_cachePlaybackWindow(index);
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widget.isActive ? _playActiveVideo() : _pauseAllVideos();
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}
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void _jumpToPageAfterBuild(int index) {
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WidgetsBinding.instance.addPostFrameCallback((_) {
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if (!mounted || widget.videos.isEmpty || !_pageController.hasClients) {
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return;
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}
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final nextIndex = index.clamp(0, widget.videos.length - 1);
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_pageController.jumpToPage(nextIndex);
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});
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}
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void _togglePlayback() {
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final controller = _controllers[_currentIndex];
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if (!widget.isActive ||
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controller == null ||
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!controller.value.isInitialized) {
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return;
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}
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controller.value.isPlaying ? controller.pause() : controller.play();
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}
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@override
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Widget build(BuildContext context) {
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if (widget.videos.isEmpty) {
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return const SizedBox.shrink();
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}
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return PageView.builder(
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controller: _pageController,
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scrollDirection: Axis.vertical,
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itemCount: widget.videos.length,
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onPageChanged: _handlePageChanged,
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itemBuilder: (context, index) {
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return _PlayerPage(
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drama: widget.videos[index],
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index: index,
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controller: _controllers[index],
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isPageActive: widget.isActive,
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isLoadingMore:
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widget.isLoadingMore && index == widget.videos.length - 1,
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bottomMetaSpacing: widget.bottomMetaSpacing,
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onTap: _togglePlayback,
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onCollectTap: () => widget.onCollectTap?.call(index),
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progressHeaderBuilder: widget.progressHeaderBuilder,
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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 _PlayerPage extends StatelessWidget {
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const _PlayerPage({
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required this.drama,
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required this.index,
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required this.controller,
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required this.isPageActive,
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required this.isLoadingMore,
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required this.bottomMetaSpacing,
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required this.onTap,
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required this.onCollectTap,
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required this.progressHeaderBuilder,
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});
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final NyDramaModel drama;
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final int index;
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final VideoPlayerController? controller;
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final bool isPageActive;
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final bool isLoadingMore;
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final double bottomMetaSpacing;
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final VoidCallback onTap;
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final VoidCallback onCollectTap;
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final Widget Function(BuildContext context, NyDramaModel drama, int index)?
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progressHeaderBuilder;
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@override
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Widget build(BuildContext context) {
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final metaBottom = resolvePlayerMetaBottom(
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safeAreaBottom: MediaQuery.paddingOf(context).bottom,
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bottomSpacing: bottomMetaSpacing,
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);
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return GestureDetector(
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behavior: HitTestBehavior.opaque,
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onTap: onTap,
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child: Stack(
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fit: StackFit.expand,
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children: [
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ColoredBox(color: Colors.black, child: _buildVideoBody()),
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const _BottomShade(),
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if (isPageActive && shouldShowPauseIcon(controller?.value))
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const _PauseIndicator(),
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Positioned(
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left: 16,
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right: 16,
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bottom: metaBottom,
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child: _buildMeta(context),
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),
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if (isLoadingMore)
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Positioned(
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left: 0,
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right: 0,
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bottom: metaBottom - 20,
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child: const Center(
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child: SizedBox(
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width: 18,
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height: 18,
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child: CircularProgressIndicator(
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strokeWidth: 2,
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color: Colors.white,
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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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Widget _buildVideoBody() {
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final activeController = controller;
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if (activeController != null && activeController.value.isInitialized) {
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final size = activeController.value.size;
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return FittedBox(
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fit: BoxFit.cover,
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child: SizedBox(
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width: size.width,
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height: size.height,
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child: VideoPlayer(activeController),
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),
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);
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}
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return Stack(
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fit: StackFit.expand,
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children: [
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if (drama.imageUrl.isNotEmpty)
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Image.network(
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drama.imageUrl,
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fit: BoxFit.cover,
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errorBuilder: (context, error, stackTrace) =>
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const SizedBox.shrink(),
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),
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Center(
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child: resolveDramaVideoUrl(drama) == null
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? const Icon(
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Icons.videocam_off_outlined,
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color: Colors.white54,
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size: 42,
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)
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: const CircularProgressIndicator(color: Colors.white),
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),
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],
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);
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}
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Widget _buildMeta(BuildContext context) {
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final isCollect = drama.isCollect ?? false;
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return Column(
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mainAxisSize: MainAxisSize.min,
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Row(
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crossAxisAlignment: CrossAxisAlignment.end,
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children: [
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Expanded(
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child: Column(
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mainAxisSize: MainAxisSize.min,
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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NovyText(
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drama.name,
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fontSize: 20,
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fontWeight: FontWeight.w700,
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maxLines: 1,
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shadow: const Shadow(color: Colors.black54, blurRadius: 8),
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),
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const SizedBox(height: 8),
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NovyText(
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drama.description,
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color: Colors.white.withValues(alpha: 0.82),
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fontSize: 14,
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maxLines: 2,
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lineHeight: 1.3,
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shadow: const Shadow(color: Colors.black54, blurRadius: 8),
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),
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],
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),
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),
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const SizedBox(width: 16),
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SizedBox(
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width: 56,
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child: IconButton(
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onPressed: onCollectTap,
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iconSize: 34,
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color: isCollect ? ConstColor.btGreen : Colors.white,
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icon: Icon(isCollect ? Icons.favorite : Icons.favorite_border),
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),
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),
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],
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),
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const SizedBox(height: 16),
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if (progressHeaderBuilder != null) ...[
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progressHeaderBuilder!(context, drama, index),
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const SizedBox(height: 8),
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],
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_buildProgress(),
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],
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);
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}
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Widget _buildProgress() {
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final activeController = controller;
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if (activeController != null && activeController.value.isInitialized) {
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return VideoProgressIndicator(
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activeController,
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allowScrubbing: true,
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padding: EdgeInsets.zero,
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colors: VideoProgressColors(
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playedColor: ConstColor.btGreen,
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bufferedColor: Colors.white.withValues(alpha: 0.36),
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backgroundColor: Colors.white.withValues(alpha: 0.18),
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),
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);
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}
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return ClipRRect(
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borderRadius: BorderRadius.circular(2),
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child: LinearProgressIndicator(
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minHeight: 3,
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value: 0,
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color: ConstColor.btGreen,
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backgroundColor: Colors.white.withValues(alpha: 0.18),
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),
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);
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}
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}
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class _BottomShade extends StatelessWidget {
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const _BottomShade();
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@override
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Widget build(BuildContext context) {
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return IgnorePointer(
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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.transparent,
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Colors.black.withValues(alpha: 0.12),
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Colors.black.withValues(alpha: 0.72),
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],
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stops: const [0.42, 0.68, 1],
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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 _PauseIndicator extends StatelessWidget {
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const _PauseIndicator();
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@override
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Widget build(BuildContext context) {
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return IgnorePointer(
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child: Center(
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child: Container(
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width: 72,
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height: 72,
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decoration: BoxDecoration(
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color: Colors.black.withValues(alpha: 0.38),
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shape: BoxShape.circle,
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border: Border.all(color: Colors.white.withValues(alpha: 0.28)),
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),
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child: const Icon(
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Icons.play_arrow_outlined,
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color: Colors.white,
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size: 42,
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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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String? resolveDramaVideoUrl(NyDramaModel drama) {
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final infoUrl = drama.videoInfo?['video_url']?.toString().trim();
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if (infoUrl != null && infoUrl.isNotEmpty) return infoUrl;
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final videoUrl = drama.videoUrl?.trim();
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if (videoUrl != null && videoUrl.isNotEmpty) return videoUrl;
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return null;
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}
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bool shouldShowPauseIcon(VideoPlayerValue? value) {
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return value != null && value.isInitialized && !value.isPlaying;
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}
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bool shouldPlayActiveVideo(
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VideoPlayerValue? value, {
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required bool isPageActive,
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}) {
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return isPageActive &&
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value != null &&
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value.isInitialized &&
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!value.isPlaying;
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}
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double resolvePlayerMetaBottom({
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required double safeAreaBottom,
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required double bottomSpacing,
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}) {
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return safeAreaBottom + bottomSpacing;
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}
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