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caf8e98378
No content changes: git diff --ignore-all-space over these files is empty. The churn came from editing on Windows against a repo checked out with LF.
34 lines
1.4 KiB
Dart
34 lines
1.4 KiB
Dart
import '../../models/document_model.dart';
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/// Result of merging the server's document list with local corrections that
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/// haven't made it back to the server yet.
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class MergedDocuments {
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final List<DocumentModel> docs;
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final Set<String> unsyncedIds;
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const MergedDocuments(this.docs, this.unsyncedIds);
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}
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/// Merges the server's authoritative document list with local corrections for
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/// documents whose `PUT` sync failed (`syncFailed` in the pending queue).
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///
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/// Without this, refreshing the documents list would silently overwrite a
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/// driver's corrected-but-unsynced edit with the server's stale pre-edit copy
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/// on every successful fetch - the correction is still recoverable via the
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/// pending queue's retry action, but the history list would show the wrong
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/// data (or the document would vanish from it entirely) until the retry
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/// succeeds. `unsyncedOverrides` wins over `serverDocs` for matching ids, and
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/// is kept even if the server list doesn't (yet) include that id at all.
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MergedDocuments mergeDocumentsWithUnsyncedOverrides({
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required List<DocumentModel> serverDocs,
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required Map<String, DocumentModel> unsyncedOverrides,
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}) {
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final merged = <String, DocumentModel>{
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for (final doc in serverDocs) doc.id: doc,
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};
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for (final entry in unsyncedOverrides.entries) {
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merged[entry.key] = entry.value;
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}
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return MergedDocuments(merged.values.toList(), unsyncedOverrides.keys.toSet());
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}
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