57 lines
1.6 KiB
Dart
57 lines
1.6 KiB
Dart
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import '../data/bible.dart';
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import '../models/tracker.dart';
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/// Pure progress calculations over a [Tracker].
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///
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/// Kept free of Flutter imports so it can be covered by plain unit tests.
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class TrackerProgress {
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TrackerProgress(this.tracker);
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final Tracker tracker;
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int chaptersReadIn(Book book) {
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int count = 0;
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for (int chapter = 1; chapter <= book.chapterCount; chapter++) {
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if (tracker.readChapters.contains(
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Bible.chapterKey(book.index, chapter),
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)) {
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count++;
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}
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}
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return count;
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}
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double fractionOf(Book book) {
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if (book.chapterCount == 0) return 0;
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return chaptersReadIn(book) / book.chapterCount;
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}
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bool isBookComplete(Book book) =>
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chaptersReadIn(book) == book.chapterCount && book.chapterCount > 0;
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bool isBookStarted(Book book) => chaptersReadIn(book) > 0;
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int get totalRead => tracker.readChapters.length;
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double get overall =>
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Bible.totalChapters == 0 ? 0 : totalRead / Bible.totalChapters;
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int booksCompleted([Testament? testament]) => Bible.books
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.where(
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(Book book) =>
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(testament == null || book.testament == testament) &&
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isBookComplete(book),
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)
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.length;
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int chaptersReadInTestament(Testament testament) => Bible.books
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.where((Book book) => book.testament == testament)
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.fold<int>(0, (int sum, Book book) => sum + chaptersReadIn(book));
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double testamentFraction(Testament testament) {
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final int total = Bible.totalChaptersIn(testament);
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if (total == 0) return 0;
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return chaptersReadInTestament(testament) / total;
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}
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}
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