ChatMessage.fromJson constructor

ChatMessage.fromJson(Map<String, dynamic> map)

Converts a JSON map representation to a ChatMessage.

The map should contain the following keys:

• 'origin': The origin of the message (user or model).
• 'text': The text content of the message.
• 'attachments': A list of attachments, each represented as a map with:
  • 'type': The type of the attachment ('file' or 'link').
  • 'name': The name of the attachment.
  • 'mimeType': The MIME type of the attachment.
  • 'data': The data of the attachment, either as a base64 encoded string (for files) or a URL (for links).

Implementation

factory ChatMessage.fromJson(Map<String, dynamic> map) => ChatMessage(
  origin: MessageOrigin.values.byName(map['origin'] as String),
  text: map['text'] as String,
  thinking: map['thinking'] as String?,
  attachments: [
    for (final attachment in map['attachments'] as List<dynamic>)
      switch (attachment['type'] as String) {
        'file' => FileAttachment.fileOrImage(
          name: attachment['name'] as String,
          mimeType: attachment['mimeType'] as String,
          bytes: base64Decode(attachment['data'] as String),
        ),
        'link' => LinkAttachment(
          name: attachment['name'] as String,
          url: Uri.parse(attachment['data'] as String),
        ),
        _ => throw UnimplementedError(),
      },
  ],
);