SFMessage.fromJson constructor

SFMessage.fromJson(Map<String, dynamic> json)

Create from JSON (handles both string and byte-array peer ID formats)

Implementation

factory SFMessage.fromJson(Map<String, dynamic> json) {
  try {
    final recipientRaw = json['recipientPeerId'];
    final senderRaw = json['senderPeerId'];

    if (recipientRaw == null) {
      throw FormatException('Missing recipientPeerId in JSON');
    }
    if (senderRaw == null) {
      throw FormatException('Missing senderPeerId in JSON');
    }

    // Parse peer ID from string or byte array (backward compat)
    PeerId parsePeerId(dynamic raw) {
      if (raw is String) {
        return PeerId.fromString(raw);
      } else if (raw is List) {
        return PeerId.fromBytes(Uint8List.fromList(raw.cast<int>()));
      } else {
        throw FormatException('Invalid peerId format: ${raw.runtimeType}');
      }
    }

    return SFMessage(
      messageId: json['messageId'] as String,
      recipientPeerId: parsePeerId(recipientRaw),
      senderPeerId: parsePeerId(senderRaw),
      payload: base64Decode(json['payload'] as String),
      priority: MessagePriority.fromValue(json['priority'] as int),
      expiryTimestamp: json['expiryTimestamp'] as int,
      hopCount: json['hopCount'] as int,
      flags: SFMessageFlags(json['flags'] as int),
      createdTimestamp: json['createdTimestamp'] as int,
      folderPath: json['folderPath'] as String?,
      sequenceNumber: json['sequenceNumber'] as int?,
      messageFlags: json['messageFlags'] != null
          ? MessageFlags(json['messageFlags'] as int)
          : null,
      persistent: json['persistent'] as bool? ?? false,
    );
  } catch (e, stackTrace) {
    throw FormatException('Failed to parse SFMessage from JSON: $e\nJSON: $json\nStack: $stackTrace');
  }
}