import 'dart:io';

import 'package:comunic/enums/post_kind.dart';
import 'package:comunic/enums/post_target.dart';
import 'package:comunic/enums/post_visibility_level.dart';
import 'package:meta/meta.dart';

/// New post information
///
/// @author Pierre HUBERT

class NewSurvey {
  final String question;
  final Set<String> answers;

  const NewSurvey({
    @required this.question,
    @required this.answers,
  })  : assert(question != null),
        assert(answers.length > 1);
}

class NewPost {
  final PostTarget target;
  final int targetID;
  final PostVisibilityLevel visibility;
  final String content;
  final File image;
  final String url;
  final List<int> pdf;
  final PostKind kind;
  final DateTime timeEnd;
  final NewSurvey survey;

  const NewPost({
    @required this.target,
    @required this.targetID,
    @required this.visibility,
    @required this.content,
    @required this.kind,
    @required this.image,
    @required this.url,
    @required this.pdf,
    @required this.timeEnd,
    @required this.survey,
  })  : assert(target != null),
        assert(targetID != null),
        assert(visibility != null),
        assert(content != null),
        assert(kind != PostKind.TEXT || content.length > 3),
        assert(kind != PostKind.IMAGE || image != null),
        assert(kind != PostKind.WEB_LINK || url != null),
        assert(kind != PostKind.PDF || pdf != null),
        assert(kind != PostKind.COUNTDOWN || timeEnd != null),
        assert(kind != PostKind.SURVEY || survey != null);
}