#117 info: set date from title

lib/l10n/app_en.arb

@@ -360,6 +360,8 @@
   "@editEntryDateDialogSet": {},
   "editEntryDateDialogShift": "Shift",
   "@editEntryDateDialogShift": {},
+  "editEntryDateDialogFromTitle": "From title",
+  "@editEntryDateDialogFromTitle": {},
   "editEntryDateDialogClear": "Clear",
   "@editEntryDateDialogClear": {},
   "editEntryDateDialogFieldSelection": "Field selection",

lib/model/entry.dart

@@ -18,6 +18,7 @@ import 'package:aves/services/geocoding_service.dart';
 import 'package:aves/services/metadata/svg_metadata_service.dart';
 import 'package:aves/theme/format.dart';
 import 'package:aves/utils/change_notifier.dart';
+import 'package:aves/utils/time_utils.dart';
 import 'package:collection/collection.dart';
 import 'package:country_code/country_code.dart';
 import 'package:flutter/foundation.dart';
@@ -635,6 +636,16 @@ class AvesEntry {
   }
 
   Future<bool> editDate(DateModifier modifier) async {
+    if (modifier.action == DateEditAction.fromTitle) {
+      final _title = bestTitle;
+      if (_title == null) return false;
+      final date = parseUnknownDateFormat(_title);
+      if (date == null) {
+        await reportService.recordError('failed to parse date from title=$_title', null);
+        return false;
+      }
+      modifier = DateModifier(DateEditAction.set, modifier.fields, dateTime: date);
+    }
     final newFields = await metadataEditService.editDate(this, modifier);
     return newFields.isNotEmpty;
   }

lib/model/metadata/enums.dart

@@ -8,6 +8,7 @@ enum MetadataField {
 enum DateEditAction {
   set,
   shift,
+  fromTitle,
   clear,
 }
 

lib/utils/time_utils.dart

@@ -13,3 +13,58 @@ extension ExtraDateTime on DateTime {
 
   bool get isThisYear => isAtSameYearAs(DateTime.now());
 }
+
+final _unixStampMillisPattern = RegExp(r'\d{13}');
+final _unixStampSecPattern = RegExp(r'\d{10}');
+final _plainPattern = RegExp(r'(\d{8})([_-\s](\d{6})([_-\s](\d{3}))?)?');
+
+DateTime? parseUnknownDateFormat(String s) {
+  var match = _unixStampMillisPattern.firstMatch(s);
+  if (match != null) {
+    final stampString = match.group(0);
+    if (stampString != null) {
+      final stampMillis = int.tryParse(stampString);
+      if (stampMillis != null) {
+        return DateTime.fromMillisecondsSinceEpoch(stampMillis, isUtc: false);
+      }
+    }
+  }
+
+  match = _unixStampSecPattern.firstMatch(s);
+  if (match != null) {
+    final stampString = match.group(0);
+    if (stampString != null) {
+      final stampMillis = int.tryParse(stampString);
+      if (stampMillis != null) {
+        return DateTime.fromMillisecondsSinceEpoch(stampMillis * 1000, isUtc: false);
+      }
+    }
+  }
+
+  match = _plainPattern.firstMatch(s);
+  if (match != null) {
+    final dateString = match.group(1);
+    final timeString = match.group(3);
+    final millisString = match.group(5);
+
+    if (dateString != null) {
+      final year = int.tryParse(dateString.substring(0, 4));
+      final month = int.tryParse(dateString.substring(4, 6));
+      final day = int.tryParse(dateString.substring(6, 8));
+
+      if (year != null && month != null && day != null) {
+        var hour = 0, minute = 0, second = 0, millis = 0;
+        if (timeString != null) {
+          hour = int.tryParse(timeString.substring(0, 2)) ?? 0;
+          minute = int.tryParse(timeString.substring(2, 4)) ?? 0;
+          second = int.tryParse(timeString.substring(4, 6)) ?? 0;
+
+          if (millisString != null) {
+            millis = int.tryParse(millisString) ?? 0;
+          }
+        }
+        return DateTime(year, month, day, hour, minute, second, millis);
+      }
+    }
+  }
+}

lib/widgets/dialogs/edit_entry_date_dialog.dart

@@ -106,6 +106,12 @@ class _EditEntryDateDialogState extends State<EditEntryDateDialog> {
               ),
             ],
           );
+          final fromTitleTile = RadioListTile<DateEditAction>(
+            value: DateEditAction.fromTitle,
+            groupValue: _action,
+            onChanged: _updateAction,
+            title: _tileText(l10n.editEntryDateDialogFromTitle),
+          );
           final clearTile = RadioListTile<DateEditAction>(
             value: DateEditAction.clear,
             groupValue: _action,
@@ -128,6 +134,7 @@ class _EditEntryDateDialogState extends State<EditEntryDateDialog> {
               scrollableContent: [
                 setTile,
                 shiftTile,
+                fromTitleTile,
                 clearTile,
                 Padding(
                   padding: const EdgeInsets.only(bottom: 1),
@@ -243,6 +250,7 @@ class _EditEntryDateDialogState extends State<EditEntryDateDialog> {
       case DateEditAction.shift:
         modifier = DateModifier(_action, _fields, shiftMinutes: _shiftMinutes);
         break;
+      case DateEditAction.fromTitle:
       case DateEditAction.clear:
         modifier = DateModifier(_action, _fields);
         break;

test/utils/time_utils_test.dart

@@ -15,4 +15,15 @@ void main() {
     expect(DateTime(1903, 9, 25).isAtSameDayAs(DateTime(1970, 2, 25)), false);
     expect(DateTime(1929, 3, 22).isAtSameDayAs(DateTime(1929, 3, 22)), true);
   });
+
+  test('Parse dates', () {
+    expect(parseUnknownDateFormat('1600995564713'), DateTime(2020, 09, 25, 09, 59, 24, 713));
+    expect(parseUnknownDateFormat('pre1600995564713suf'), DateTime(2020, 09, 25, 09, 59, 24, 713));
+
+    expect(parseUnknownDateFormat('1600995564'), DateTime(2020, 09, 25, 09, 59, 24, 0));
+    expect(parseUnknownDateFormat('pre1600995564suf'), DateTime(2020, 09, 25, 09, 59, 24, 0));
+
+    expect(parseUnknownDateFormat('IMG_20210901_142523_783'), DateTime(2021, 09, 1, 14, 25, 23, 783));
+    expect(parseUnknownDateFormat('Screenshot_20211028-115056_Aves'), DateTime(2021, 10, 28, 11, 50, 56, 0));
+  });
 }

untranslated.json

@@ -1,5 +1,10 @@
 {
+  "ko": [
+    "editEntryDateDialogFromTitle"
+  ],
+
   "ru": [
+    "editEntryDateDialogFromTitle",
     "aboutCreditsTranslators"
   ]
 }