mirror of
https://github.com/zapstore/zapstore.git
synced 2026-10-05 20:48:24 +00:00
837 lines
23 KiB
Dart
837 lines
23 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:hooks_riverpod/hooks_riverpod.dart';
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import 'package:models/models.dart';
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import 'package:zapstore/utils/extensions.dart';
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import 'package:any_link_preview/any_link_preview.dart';
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import 'package:url_launcher/url_launcher.dart';
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import 'package:cached_network_image/cached_network_image.dart';
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import 'package:zapstore/utils/url_utils.dart';
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/// Enum for different media types
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enum MediaType { image, video, audio, none }
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/// Helper function to launch URLs with robust error handling
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Future<void> _launchUrlSafely(String url, {String? context}) async {
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try {
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// Clean and validate the URL
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String cleanUrl = url.trim();
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if (!cleanUrl.startsWith('http://') && !cleanUrl.startsWith('https://')) {
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cleanUrl = 'https://$cleanUrl';
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}
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final uri = Uri.parse(cleanUrl);
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if (await canLaunchUrl(uri)) {
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await launchUrl(uri, mode: LaunchMode.externalApplication);
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} else {
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// Try alternative launch mode
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try {
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await launchUrl(uri, mode: LaunchMode.platformDefault);
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} catch (e2) {
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// Silently fail - both launch modes failed
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}
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}
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} catch (e) {
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// Silently handle URL launch errors
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}
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}
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/// A utility for parsing Nostr note content and replacing entities with custom widgets.
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class NoteParser {
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// Regex patterns for different content types
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static final RegExp nip19Regex = RegExp(
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r'(?:nostr:)?(npub|nsec|note|nprofile|nevent|naddr|nrelay)1[02-9ac-hj-np-z]+',
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caseSensitive: false,
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);
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static final RegExp httpUrlPattern = RegExp(
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r'https?://[^\s<>"\[\]{}|\\^`]+',
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caseSensitive: false,
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);
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// Hashtag pattern - matches #word (letters, numbers, underscores)
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static final RegExp _hashtagPattern = RegExp(
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r'#[a-zA-Z0-9_]+',
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caseSensitive: false,
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);
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// Image file extensions
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static final Set<String> _imageExtensions = {
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'jpg',
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'jpeg',
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'png',
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'gif',
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'webp',
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'bmp',
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'svg',
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};
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// Video file extensions
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static final Set<String> _videoExtensions = {
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'mp4',
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'webm',
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'avi',
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'mov',
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'mkv',
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};
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// Audio file extensions (for future use)
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static final Set<String> _audioExtensions = {'mp3', 'wav', 'ogg'};
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/// Parses note content and returns a RichText widget with custom entity replacements.
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///
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/// [context] - The build context for accessing theme
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/// [content] - The note text content to parse
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/// [onNostrEntity] - Optional callback for replacing NIP-19 entities (npub, note, etc.)
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/// [onHttpUrl] - Optional callback for replacing HTTP URLs
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/// [onMediaUrl] - Optional callback specifically for media URLs (images, videos, etc.)
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/// [onHashtag] - Optional callback for replacing hashtags (#hashtag)
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/// [onHashtagTap] - Optional callback for when a hashtag is tapped
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/// [onProfileTap] - Optional callback for when a profile is tapped
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/// [textStyle] - Default text style for regular text
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/// [linkStyle] - Text style for unhandled links (when callback returns null)
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static Widget parse(
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BuildContext context,
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String content, {
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Widget? Function(String entity)? onNostrEntity,
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Widget? Function(String httpUrl)? onHttpUrl,
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Widget? Function(String mediaUrl)? onMediaUrl,
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Widget? Function(String hashtag)? onHashtag,
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void Function(String hashtag)? onHashtagTap,
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void Function(String pubkey)? onProfileTap,
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TextStyle? textStyle,
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TextStyle? linkStyle,
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}) {
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if (content.isEmpty) {
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return Text('', style: textStyle);
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}
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final List<InlineSpan> spans = [];
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final List<_EntityMatch> matches = [];
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// Find all NIP-19 entities
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for (final match in nip19Regex.allMatches(content)) {
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final entity = match.group(0)!;
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final nip19Entity = entity.replaceFirst('nostr:', '');
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matches.add(
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_EntityMatch(
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start: match.start,
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end: match.end,
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text: entity,
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type: _EntityType.nip19,
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cleanEntity: nip19Entity,
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),
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);
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}
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// Find all HTTP URLs
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for (final match in httpUrlPattern.allMatches(content)) {
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final url = match.group(0)!;
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final isMedia = _isMediaUrl(url);
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matches.add(
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_EntityMatch(
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start: match.start,
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end: match.end,
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text: url,
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type: isMedia ? _EntityType.media : _EntityType.http,
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cleanEntity: url,
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),
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);
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}
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// Find all hashtags
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for (final match in _hashtagPattern.allMatches(content)) {
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final hashtag = match.group(0)!;
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matches.add(
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_EntityMatch(
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start: match.start,
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end: match.end,
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text: hashtag,
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type: _EntityType.hashtag,
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cleanEntity: hashtag.substring(1), // Remove the # symbol
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),
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);
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}
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// Sort matches by position
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matches.sort((a, b) => a.start.compareTo(b.start));
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// Build spans
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int currentPos = 0;
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for (final match in matches) {
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// Add text before this match
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if (match.start > currentPos) {
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final textBefore = content.substring(currentPos, match.start);
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spans.add(TextSpan(text: textBefore, style: textStyle));
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}
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// Handle the entity
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Widget? replacement;
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switch (match.type) {
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case _EntityType.nip19:
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replacement = onNostrEntity?.call(match.cleanEntity);
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break;
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case _EntityType.media:
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replacement =
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onMediaUrl?.call(match.text) ?? onHttpUrl?.call(match.text);
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break;
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case _EntityType.http:
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replacement = onHttpUrl?.call(match.text);
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break;
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case _EntityType.hashtag:
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replacement =
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onHashtag?.call(match.cleanEntity) ??
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HashtagWidget(
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hashtag: match.cleanEntity,
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colorPair: [
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Theme.of(context).colorScheme.primary,
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Theme.of(context).colorScheme.primaryContainer,
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],
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onTap: onHashtagTap != null
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? () => onHashtagTap(match.cleanEntity)
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: null,
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);
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break;
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}
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if (replacement != null) {
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spans.add(
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WidgetSpan(
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child: replacement,
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alignment: PlaceholderAlignment.baseline,
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baseline: TextBaseline.alphabetic,
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),
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);
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} else {
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// Fallback to styled text
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final style =
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linkStyle ??
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textStyle?.copyWith(
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color: Theme.of(context).colorScheme.primary,
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decoration: TextDecoration.underline,
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);
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spans.add(TextSpan(text: match.text, style: style));
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}
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currentPos = match.end;
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}
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// Add remaining text
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if (currentPos < content.length) {
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final remainingText = content.substring(currentPos);
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spans.add(TextSpan(text: remainingText, style: textStyle));
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}
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// If no entities found, return simple text
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if (spans.isEmpty) {
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return Text(content, style: textStyle);
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}
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return Text.rich(TextSpan(children: spans));
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}
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/// Checks if a URL is likely a media URL and returns the media type
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static MediaType _getMediaType(String url) {
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try {
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final uri = Uri.parse(url);
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final path = uri.path.toLowerCase();
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final extension = path.split('.').last;
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if (_imageExtensions.contains(extension)) {
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return MediaType.image;
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} else if (_videoExtensions.contains(extension)) {
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return MediaType.video;
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} else if (_audioExtensions.contains(extension)) {
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return MediaType.audio;
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} else {
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return MediaType.none;
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}
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} catch (e) {
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return MediaType.none;
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}
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}
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/// Checks if a URL is likely a media URL based on file extension
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static bool _isMediaUrl(String url) {
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return _getMediaType(url) != MediaType.none;
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}
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/// Validates if a string is a valid NIP-19 entity
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static bool isValidNip19Entity(String entity) {
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try {
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Utils.decodeShareableIdentifier(entity);
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return true;
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} catch (e) {
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return false;
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}
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}
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/// Extracts all NIP-19 entities from text
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@protected
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@visibleForTesting
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static List<String> extractNip19Entities(String content) {
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return nip19Regex
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.allMatches(content)
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.map((match) => match.group(0)!.replaceFirst('nostr:', ''))
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.where((entity) => isValidNip19Entity(entity))
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.toList();
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}
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/// Extracts all HTTP URLs from text
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@protected
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@visibleForTesting
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static List<String> extractHttpUrls(String content) {
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return httpUrlPattern
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.allMatches(content)
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.map((match) => match.group(0)!)
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.toList();
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}
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/// Extracts all media URLs from text
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@protected
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@visibleForTesting
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static List<String> extractMediaUrls(String content) {
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return extractHttpUrls(content).where((url) => _isMediaUrl(url)).toList();
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}
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/// Extracts all hashtags from text (without the # symbol)
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@protected
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@visibleForTesting
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static List<String> extractHashtags(String content) {
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return _hashtagPattern
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.allMatches(content)
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.map((match) => match.group(0)!.substring(1)) // Remove # symbol
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.toList();
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}
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}
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/// Internal class for tracking entity matches
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class _EntityMatch {
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final int start;
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final int end;
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final String text;
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final _EntityType type;
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final String cleanEntity;
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_EntityMatch({
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required this.start,
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required this.end,
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required this.text,
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required this.type,
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required this.cleanEntity,
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});
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}
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/// Internal enum for entity types
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enum _EntityType { nip19, http, media, hashtag }
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// Widgets
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class NostrEntityWidget extends StatelessWidget {
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final String entity;
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final List<Color> colorPair;
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final void Function(String pubkey)? onProfileTap;
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final void Function(String hashtag)? onHashtagTap;
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const NostrEntityWidget({
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super.key,
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required this.entity,
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required this.colorPair,
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this.onProfileTap,
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this.onHashtagTap,
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});
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@override
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Widget build(BuildContext context) {
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try {
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final decoded = Utils.decodeShareableIdentifier(entity);
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return switch (decoded) {
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ProfileData() => ProfileEntityWidget(
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profileData: decoded,
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colorPair: colorPair,
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onProfileTap: onProfileTap,
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),
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EventData() => EventEntityWidget(
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eventData: decoded,
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colorPair: colorPair,
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),
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AddressData() => AddressEntityWidget(
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addressData: decoded,
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colorPair: colorPair,
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),
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};
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} catch (e) {
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return GenericNip19Widget(entity: entity, colorPair: colorPair);
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}
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}
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}
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class ProfileEntityWidget extends ConsumerWidget {
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final ProfileData profileData;
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final List<Color> colorPair;
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final void Function(String pubkey)? onProfileTap;
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const ProfileEntityWidget({
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super.key,
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required this.profileData,
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required this.colorPair,
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this.onProfileTap,
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});
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@override
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Widget build(BuildContext context, WidgetRef ref) {
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final profileState = ref.watch(
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query<Profile>(
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authors: {profileData.pubkey},
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source: const LocalAndRemoteSource(
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relays: {'social', 'vertex'},
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cachedFor: Duration(hours: 2),
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),
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subscriptionPrefix: 'app-note-profile',
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),
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);
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// Show animated npub while profile is being loaded
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return switch (profileState) {
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StorageLoading() => GestureDetector(
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onTap: onProfileTap != null
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? () => onProfileTap!(profileData.pubkey)
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: null,
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child: _AnimatedLoadingChip(
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text: 'npub1${profileData.pubkey.substring(0, 8)}...',
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colorPair: colorPair,
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),
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),
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StorageError() || StorageData(models: []) => GestureDetector(
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onTap: onProfileTap != null
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? () => onProfileTap!(profileData.pubkey)
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: null,
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child: _AnimatedLoadingChip(
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text: 'npub1${profileData.pubkey.substring(0, 8)}...',
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colorPair: colorPair,
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),
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),
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StorageData(:final models) => _buildProfileWidget(context, models.first),
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};
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}
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Widget _buildProfileWidget(BuildContext context, Profile profile) {
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final displayName = profile.nameOrNpub;
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return GestureDetector(
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onTap: onProfileTap != null
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? () => onProfileTap!(profileData.pubkey)
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: null,
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child: DecoratedBox(
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decoration: BoxDecoration(
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color: colorPair[0].withValues(alpha: 0.1),
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borderRadius: BorderRadius.circular(4.0),
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),
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child: Padding(
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padding: const EdgeInsets.symmetric(horizontal: 4.0),
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child: Text(
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displayName,
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style: context.textTheme.bodyMedium!.copyWith(
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fontWeight: FontWeight.w500,
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color: colorPair[0],
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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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class EventEntityWidget extends StatelessWidget {
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final EventData eventData;
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final List<Color> colorPair;
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const EventEntityWidget({
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super.key,
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required this.eventData,
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required this.colorPair,
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});
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@override
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Widget build(BuildContext context) {
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final shortId = eventData.eventId.length > 12
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? '${eventData.eventId.substring(0, 8)}…'
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: eventData.eventId;
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return Container(
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margin: const EdgeInsets.symmetric(vertical: 8.0),
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decoration: BoxDecoration(
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color: Theme.of(context).colorScheme.surfaceContainerLowest,
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borderRadius: BorderRadius.circular(12.0),
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border: Border.all(
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color: colorPair[0].withValues(alpha: 0.2),
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width: 1.0,
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),
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boxShadow: [
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BoxShadow(
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color: colorPair[0].withValues(alpha: 0.05),
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blurRadius: 4.0,
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offset: const Offset(0, 2),
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),
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],
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),
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child: Padding(
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padding: const EdgeInsets.all(16.0),
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child: Row(
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children: [
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Icon(Icons.event, color: colorPair[0]),
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const SizedBox(width: 8.0),
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Expanded(
|
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child: Column(
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|
crossAxisAlignment: CrossAxisAlignment.start,
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children: [
|
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Text(
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'Event',
|
|
style: context.textTheme.bodyMedium?.copyWith(
|
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fontWeight: FontWeight.w600,
|
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),
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),
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const SizedBox(height: 4),
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Text(
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|
shortId,
|
|
style: context.textTheme.bodySmall?.copyWith(
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color: Theme.of(
|
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context,
|
|
).colorScheme.onSurface.withValues(alpha: 0.7),
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|
fontFeatures: const [FontFeature.tabularFigures()],
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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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);
|
|
}
|
|
}
|
|
|
|
class AddressEntityWidget extends StatelessWidget {
|
|
final AddressData addressData;
|
|
final List<Color> colorPair;
|
|
|
|
const AddressEntityWidget({
|
|
super.key,
|
|
required this.addressData,
|
|
required this.colorPair,
|
|
});
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return GestureDetector(
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onTap: () {
|
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// Handle address navigation
|
|
},
|
|
child: DecoratedBox(
|
|
decoration: BoxDecoration(
|
|
color: colorPair[0].withValues(alpha: 0.1),
|
|
borderRadius: BorderRadius.circular(4.0),
|
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),
|
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child: Padding(
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|
padding: const EdgeInsets.symmetric(horizontal: 4.0),
|
|
child: Text(
|
|
addressData.identifier,
|
|
style: context.textTheme.bodyMedium!.copyWith(
|
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fontWeight: FontWeight.w500,
|
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color: colorPair[0],
|
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),
|
|
),
|
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),
|
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),
|
|
);
|
|
}
|
|
}
|
|
|
|
class GenericNip19Widget extends StatelessWidget {
|
|
final String entity;
|
|
final List<Color> colorPair;
|
|
|
|
const GenericNip19Widget({
|
|
super.key,
|
|
required this.entity,
|
|
required this.colorPair,
|
|
});
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return DecoratedBox(
|
|
decoration: BoxDecoration(
|
|
color: colorPair[0].withValues(alpha: 0.1),
|
|
borderRadius: BorderRadius.circular(4.0),
|
|
),
|
|
child: Padding(
|
|
padding: const EdgeInsets.symmetric(horizontal: 4.0),
|
|
child: Text(
|
|
entity,
|
|
style: context.textTheme.bodyMedium!.copyWith(
|
|
fontWeight: FontWeight.w500,
|
|
color: colorPair[0],
|
|
),
|
|
),
|
|
),
|
|
);
|
|
}
|
|
}
|
|
|
|
class UrlChipWidget extends StatelessWidget {
|
|
final String url;
|
|
final List<Color> colorPair;
|
|
|
|
const UrlChipWidget({super.key, required this.url, required this.colorPair});
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
// Fallback widget for when preview fails
|
|
Widget fallbackWidget = GestureDetector(
|
|
onTap: () => _launchUrlSafely(url, context: 'Fallback'),
|
|
child: DecoratedBox(
|
|
decoration: BoxDecoration(
|
|
color: colorPair[0].withValues(alpha: 0.1),
|
|
borderRadius: BorderRadius.circular(4.0),
|
|
),
|
|
child: Padding(
|
|
padding: const EdgeInsets.symmetric(horizontal: 4.0),
|
|
child: Text(
|
|
url,
|
|
style: context.textTheme.bodyMedium!.copyWith(
|
|
color: colorPair[0],
|
|
decoration: TextDecoration.underline,
|
|
),
|
|
overflow: TextOverflow.ellipsis,
|
|
),
|
|
),
|
|
),
|
|
);
|
|
|
|
return Container(
|
|
margin: const EdgeInsets.symmetric(vertical: 4.0),
|
|
child: Material(
|
|
color: Colors.transparent,
|
|
child: AnyLinkPreview(
|
|
link: url,
|
|
displayDirection: UIDirection.uiDirectionHorizontal,
|
|
showMultimedia: true,
|
|
bodyMaxLines: 2,
|
|
bodyTextOverflow: TextOverflow.ellipsis,
|
|
titleStyle: context.textTheme.bodyMedium!.copyWith(
|
|
fontWeight: FontWeight.w600,
|
|
fontSize: 14,
|
|
),
|
|
bodyStyle: context.textTheme.bodySmall!.copyWith(
|
|
color: Colors.grey[600],
|
|
fontSize: 12,
|
|
),
|
|
cache: Duration.zero,
|
|
backgroundColor: colorPair[0].withValues(alpha: 0.05),
|
|
borderRadius: 8.0,
|
|
removeElevation: true,
|
|
boxShadow: const [],
|
|
onTap: () => _launchUrlSafely(url, context: 'Link Preview'),
|
|
errorWidget: fallbackWidget,
|
|
errorBody: 'Link preview unavailable',
|
|
errorTitle: 'Unable to load preview',
|
|
errorImage: '',
|
|
placeholderWidget: fallbackWidget,
|
|
),
|
|
),
|
|
);
|
|
}
|
|
}
|
|
|
|
class MediaWidget extends StatelessWidget {
|
|
final String url;
|
|
final List<Color> colorPair;
|
|
|
|
const MediaWidget({super.key, required this.url, required this.colorPair});
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
final mediaType = NoteParser._getMediaType(url);
|
|
|
|
return Container(
|
|
margin: const EdgeInsets.symmetric(vertical: 8.0),
|
|
decoration: BoxDecoration(
|
|
borderRadius: BorderRadius.circular(12.0),
|
|
border: Border.all(color: colorPair[0].withValues(alpha: 0.2)),
|
|
),
|
|
child: ClipRRect(
|
|
borderRadius: BorderRadius.circular(12.0),
|
|
child: switch (mediaType) {
|
|
MediaType.image => _buildImageWidget(context),
|
|
_ => _buildUnsupportedWidget(context),
|
|
},
|
|
),
|
|
);
|
|
}
|
|
|
|
Widget _buildImageWidget(BuildContext context) {
|
|
final sanitizedUrl = sanitizeHttpUrl(url);
|
|
if (sanitizedUrl == null) {
|
|
return _buildUnsupportedWidget(context);
|
|
}
|
|
|
|
return CachedNetworkImage(
|
|
imageUrl: sanitizedUrl,
|
|
fit: BoxFit.cover,
|
|
placeholder: (context, url) =>
|
|
SizedBox(height: 200, child: _buildContentImageLoader(context)),
|
|
errorWidget: (context, url, error) => SizedBox(
|
|
height: 60,
|
|
child: Row(
|
|
mainAxisAlignment: MainAxisAlignment.center,
|
|
children: [
|
|
Icon(Icons.broken_image_outlined, color: Colors.grey[400]),
|
|
const SizedBox(width: 8.0),
|
|
Text(
|
|
'Image failed to load',
|
|
style: Theme.of(
|
|
context,
|
|
).textTheme.bodySmall!.copyWith(color: Colors.grey[600]),
|
|
),
|
|
],
|
|
),
|
|
),
|
|
);
|
|
}
|
|
|
|
Widget _buildContentImageLoader(BuildContext context) {
|
|
return Container(
|
|
decoration: const BoxDecoration(
|
|
gradient: LinearGradient(
|
|
begin: Alignment.topLeft,
|
|
end: Alignment.bottomRight,
|
|
colors: [Color(0xFF2A2A2A), Color(0xFF3A3A3A), Color(0xFF2A2A2A)],
|
|
stops: [0.0, 0.5, 1.0],
|
|
),
|
|
),
|
|
);
|
|
}
|
|
|
|
Widget _buildUnsupportedWidget(BuildContext context) {
|
|
return Container(
|
|
height: 60,
|
|
color: colorPair[0].withValues(alpha: 0.1),
|
|
child: Row(
|
|
mainAxisAlignment: MainAxisAlignment.center,
|
|
children: [
|
|
Icon(Icons.help_outline, color: colorPair[0]),
|
|
const SizedBox(width: 8.0),
|
|
Text(
|
|
'Unsupported media type',
|
|
style: Theme.of(
|
|
context,
|
|
).textTheme.bodySmall!.copyWith(color: colorPair[0]),
|
|
),
|
|
],
|
|
),
|
|
);
|
|
}
|
|
}
|
|
|
|
class HashtagWidget extends StatelessWidget {
|
|
final String hashtag;
|
|
final List<Color> colorPair;
|
|
final VoidCallback? onTap;
|
|
|
|
const HashtagWidget({
|
|
super.key,
|
|
required this.hashtag,
|
|
required this.colorPair,
|
|
this.onTap,
|
|
});
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return GestureDetector(
|
|
onTap: onTap,
|
|
child: Container(
|
|
decoration: BoxDecoration(
|
|
color: colorPair[0].withValues(alpha: 0.1),
|
|
borderRadius: BorderRadius.circular(4.0),
|
|
),
|
|
padding: const EdgeInsets.symmetric(horizontal: 4.0, vertical: 1.0),
|
|
child: Text(
|
|
'#$hashtag',
|
|
style: context.textTheme.bodyMedium!.copyWith(
|
|
color: colorPair[0],
|
|
fontWeight: FontWeight.w500,
|
|
),
|
|
),
|
|
),
|
|
);
|
|
}
|
|
}
|
|
|
|
/// Animated loading chip for profile loading states
|
|
class _AnimatedLoadingChip extends StatefulWidget {
|
|
final String text;
|
|
final List<Color> colorPair;
|
|
|
|
const _AnimatedLoadingChip({required this.text, required this.colorPair});
|
|
|
|
@override
|
|
State<_AnimatedLoadingChip> createState() => _AnimatedLoadingChipState();
|
|
}
|
|
|
|
class _AnimatedLoadingChipState extends State<_AnimatedLoadingChip>
|
|
with SingleTickerProviderStateMixin {
|
|
late AnimationController _controller;
|
|
late Animation<double> _animation;
|
|
|
|
@override
|
|
void initState() {
|
|
super.initState();
|
|
_controller = AnimationController(
|
|
duration: const Duration(milliseconds: 1500),
|
|
vsync: this,
|
|
);
|
|
_animation = Tween<double>(
|
|
begin: 0.1,
|
|
end: 0.3,
|
|
).animate(CurvedAnimation(parent: _controller, curve: Curves.easeInOut));
|
|
_controller.repeat(reverse: true);
|
|
}
|
|
|
|
@override
|
|
void dispose() {
|
|
_controller.dispose();
|
|
super.dispose();
|
|
}
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return AnimatedBuilder(
|
|
animation: _animation,
|
|
builder: (context, child) {
|
|
return DecoratedBox(
|
|
decoration: BoxDecoration(
|
|
color: widget.colorPair[0].withValues(alpha: _animation.value),
|
|
borderRadius: BorderRadius.circular(4.0),
|
|
),
|
|
child: Padding(
|
|
padding: const EdgeInsets.symmetric(horizontal: 4.0),
|
|
child: Text(
|
|
widget.text,
|
|
style: context.textTheme.bodyMedium!.copyWith(
|
|
fontWeight: FontWeight.w500,
|
|
color: widget.colorPair[0],
|
|
),
|
|
),
|
|
),
|
|
);
|
|
},
|
|
);
|
|
}
|
|
}
|