Rijad Zuzo
79 lines
2.0 KiB
Dart
79 lines
2.0 KiB
Dart
class WhatsAppSharePayload {
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const WhatsAppSharePayload({
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required this.messageText,
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this.sourceDisplayName,
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this.sourceUserId,
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this.sourceThreadId,
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});
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final String messageText;
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final String? sourceDisplayName;
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final String? sourceUserId;
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final String? sourceThreadId;
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}
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/// Parses raw shared text from WhatsApp into normalized fields.
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class WhatsAppShareParser {
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const WhatsAppShareParser._();
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static final RegExp _datePrefixPattern = RegExp(
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r'^\[[^\]]+\]\s*([^:\n]{2,80}):\s*(.+)$',
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dotAll: true,
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);
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static final RegExp _namePrefixPattern = RegExp(
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r'^([^:\n]{2,80}):\s*(.+)$',
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dotAll: true,
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);
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static WhatsAppSharePayload parse(String raw) {
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final String input = raw.trim();
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if (input.isEmpty) {
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return const WhatsAppSharePayload(messageText: '');
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}
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String? senderName;
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String messageText = input;
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final RegExpMatch? dateMatch = _datePrefixPattern.firstMatch(input);
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if (dateMatch != null) {
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senderName = _cleanSender(dateMatch.group(1));
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messageText = dateMatch.group(2)?.trim() ?? input;
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} else {
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final RegExpMatch? nameMatch = _namePrefixPattern.firstMatch(input);
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if (nameMatch != null) {
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senderName = _cleanSender(nameMatch.group(1));
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messageText = nameMatch.group(2)?.trim() ?? input;
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}
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}
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final String? sourceUserId = _normalizedKey(senderName);
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return WhatsAppSharePayload(
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messageText: messageText,
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sourceDisplayName: senderName,
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sourceUserId: sourceUserId,
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sourceThreadId: null,
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);
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}
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static String? _cleanSender(String? input) {
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if (input == null) {
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return null;
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}
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final String cleaned = input.trim();
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return cleaned.isEmpty ? null : cleaned;
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}
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static String? _normalizedKey(String? input) {
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if (input == null) {
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return null;
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}
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final String key = input
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.toLowerCase()
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.replaceAll(RegExp(r'[^a-z0-9]+'), ' ')
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.trim()
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.replaceAll(RegExp(r'\s+'), ' ');
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return key.isEmpty ? null : 'wa:$key';
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}
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}
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