results_feed/lib/src/model/comment.dart

// Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'package:firebase/firestore.dart' show DocumentSnapshot;

class Comment implements Comparable {
  final String id;
  final String author;
  final DateTime created;
  final String comment;
  final String link;
  final bool approved;
  final List<String> results;
  final List<String> tryResults;
  final String baseComment;
  final int blamelistStartIndex;
  final int blamelistEndIndex;
  final int pinnedIndex;
  final int review;
  final int patchset;
  String commentHtml;

  Comment(
      this.id,
      this.author,
      this.created,
      this.comment,
      this.link,
      this.approved,
      List _results,
      List _tryResults,
      this.baseComment,
      this.blamelistStartIndex,
      this.blamelistEndIndex,
      this.pinnedIndex,
      this.review,
      this.patchset)
      : results = List<String>.from(_results),
        tryResults = List<String>.from(_tryResults) {
    commentHtml = createCommentHtml();
  }

  Comment.fromDocument(DocumentSnapshot document)
      : id = document.id,
        author = document.get('author'),
        created = document.get('created'),
        comment = document.get('comment'),
        link = document.get('link'),
        approved = document.get('approved'),
        results = List<String>.from(document.get('results') ?? []),
        tryResults = List<String>.from(document.get('tryResults') ?? []),
        baseComment = document.get('base_comment'),
        blamelistStartIndex = document.get('blamelist_start_index'),
        blamelistEndIndex = document.get('blamelist_end_index'),
        pinnedIndex = document.get('pinned_index'),
        review = document.get('review'),
        patchset = document.get('patchset') {
    commentHtml = createCommentHtml();
  }

  String approvedText() =>
      (approved == null) ? "" : approved ? "approved" : "disapproved";

  static const repositories = ['sdk', 'co19'];
  // Matches a repository or nothing, followed by #[digits][word break].
  static final issueMatcher =
      RegExp('(${repositories.join("|")})?\\s*#(\\d+)\\b');

  String createCommentHtml() {
    final result = comment
        ?.replaceAll('<', '&lt;')
        ?.replaceAll('\\n', '<br>')
        ?.replaceAllMapped(
            issueMatcher,
            (match) =>
                '<a target="_blank" rel="noopener" href="https://github.com/'
                'dart-lang/${match[1] ?? "sdk"}/issues/${match[2]}">'
                '${match[0]}</a>');
    return result;
  }

  int compareTo(Object other) => created.compareTo((other as Comment).created);
}