83 lines
2.5 KiB
Dart
83 lines
2.5 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:collection/collection.dart';
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import 'package:matrix/matrix.dart';
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import 'package:fluffychat/pangea/analytics_misc/client_analytics_extension.dart';
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import 'package:fluffychat/pangea/analytics_misc/construct_use_model.dart';
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import 'package:fluffychat/pangea/events/event_wrappers/pangea_message_event.dart';
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class ExampleMessageUtil {
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static Future<List<InlineSpan>?> getExampleMessage(
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ConstructUses construct,
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Client client, {
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String? form,
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}) async {
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for (final use in construct.cappedUses) {
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if (form != null && use.form != form) continue;
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final event = await client.getEventByConstructUse(use);
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if (event == null) continue;
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final spans = _buildExampleMessage(use.form, event);
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if (spans != null) return spans;
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}
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return null;
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}
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static Future<List<List<InlineSpan>>> getExampleMessages(
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ConstructUses construct,
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Client client,
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int maxMessages,
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) async {
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final List<List<InlineSpan>> allSpans = [];
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for (final use in construct.cappedUses) {
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if (allSpans.length >= maxMessages) break;
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final event = await client.getEventByConstructUse(use);
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if (event == null) continue;
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final spans = _buildExampleMessage(use.form, event);
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if (spans != null) {
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allSpans.add(spans);
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}
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}
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return allSpans;
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}
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static List<InlineSpan>? _buildExampleMessage(
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String? form,
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PangeaMessageEvent messageEvent,
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) {
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final tokens = messageEvent.messageDisplayRepresentation?.tokens;
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if (tokens == null || tokens.isEmpty) return null;
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final token = tokens.firstWhereOrNull(
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(token) => token.text.content == form,
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);
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if (token == null) return null;
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final text = messageEvent.messageDisplayText;
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final tokenText = token.text.content;
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int tokenIndex = text.indexOf(tokenText);
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if (tokenIndex == -1) return null;
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final beforeSubstring = text.substring(0, tokenIndex);
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if (beforeSubstring.length != beforeSubstring.characters.length) {
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tokenIndex = beforeSubstring.characters.length;
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}
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final int tokenLength = tokenText.characters.length;
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final before = text.characters.take(tokenIndex).toString();
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final after = text.characters.skip(tokenIndex + tokenLength).toString();
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return [
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TextSpan(text: before),
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TextSpan(
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text: tokenText,
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style: const TextStyle(
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fontWeight: FontWeight.bold,
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),
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),
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TextSpan(text: after),
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];
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}
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}
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