fltkeep-note.dart

class Note {
  final String id;
  String title;
  String content;
  Color color;
  NoteState state;
  final DateTime createdAt;
  DateTime modifiedAt;

  /// Instantiates a [Note].
  Note({
    this.id,
    this.title,
    this.content,
    this.color,
    this.state,
    DateTime createdAt,
    DateTime modifiedAt,
  }) : this.createdAt = createdAt ?? DateTime.now(),
    this.modifiedAt = modifiedAt ?? DateTime.now();

  /// Transforms the Firestore query [snapshot] into a list of [Note] instances.
  static List<Note> fromQuery(QuerySnapshot snapshot) => snapshot != null ? toNotes(snapshot) : [];
}

/// State enum for a note.
enum NoteState {
  unspecified,
  pinned,
  archived,
  deleted,
}

/// Transforms the query result into a list of notes.
List<Note> toNotes(QuerySnapshot query) => query.documents
  .map((d) => toNote(d))
  .where((n) => n != null)
  .toList();

/// Transforms a document into a single note.
Note toNote(DocumentSnapshot doc) => doc.exists
  ? Note(
    id: doc.documentID,
    title: doc.data['title'],
    content: doc.data['content'],
    state: NoteState.values[doc.data['state'] ?? 0],
    color: _parseColor(doc.data['color']),
    createdAt: DateTime.fromMillisecondsSinceEpoch(doc.data['createdAt'] ?? 0),
    modifiedAt: DateTime.fromMillisecondsSinceEpoch(doc.data['modifiedAt'] ?? 0),
  )
  : null;

Color _parseColor(num colorInt) => Color(colorInt ?? 0xFFFFFFFF);