109 lines
3.3 KiB
Dart
109 lines
3.3 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter_gen/gen_l10n/app_localizations.dart';
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class Tools {
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Tools._();
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/// Builds a formatted time string from two date strings in the format 'YYYY-MM'.
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///
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/// Returns a string in the format 'Month Year - Month Year' using localized month names.
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/// Returns an empty string if either input is empty or invalid.
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///
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/// Parameters:
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/// - [startDate]: String in 'YYYY-MM' format (e.g., '2024-03')
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/// - [endDate]: String in 'YYYY-MM' format (e.g., '2024-12')
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/// - [context]: BuildContext for accessing localizations
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///
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/// Example:
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/// ```dart
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/// final timeString = buildTimeString('2024-03', '2024-12', context);
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/// // Returns "March 2024 - December 2024" (or localized equivalent)
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/// ```
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static String buildTimeString(
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String startDate, String endDate, BuildContext context) {
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// Check for empty or null inputs
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if (startDate.isEmpty || endDate.isEmpty) {
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return '';
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}
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try {
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// Validate date format
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if (!startDate.contains(RegExp(r'^\d{4}-\d{2}$')) ||
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!endDate.contains(RegExp(r'^\d{4}-\d{2}$'))) {
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return '';
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}
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// Parse dates with validation
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final firstDate = DateTime.tryParse('$startDate-01');
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final secondDate = DateTime.tryParse('$endDate-01');
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// Check if parsing was successful
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if (firstDate == null || secondDate == null) {
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return '';
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}
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// Build the formatted string
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return '${getLocalizedMonth(context, firstDate.month)} ${firstDate.year} - '
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'${getLocalizedMonth(context, secondDate.month)} ${secondDate.year}';
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} catch (e) {
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// Handle any unexpected errors
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debugPrint('Error building time string: $e');
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return '';
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}
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}
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/// Returns the localized month name as a [String] based on the provided month number.
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///
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/// The [context] is used to access the app's localizations.
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/// The [monthNumber] must be between 1 and 12, where 1 represents January
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/// and 12 represents December.
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///
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/// Throws an [ArgumentError] if the month number is not between 1 and 12.
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///
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/// Example:
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/// ```dart
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/// final monthName = getLocalizedMonth(context, 3); // Returns "March" or "März"
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/// ```
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static String getLocalizedMonth(BuildContext context, int monthNumber) {
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final localizations = AppLocalizations.of(context)!;
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switch (monthNumber) {
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case 1:
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return localizations.january;
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case 2:
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return localizations.february;
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case 3:
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return localizations.march;
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case 4:
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return localizations.april;
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case 5:
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return localizations.may;
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case 6:
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return localizations.june;
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case 7:
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return localizations.july;
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case 8:
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return localizations.august;
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case 9:
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return localizations.september;
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case 10:
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return localizations.october;
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case 11:
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return localizations.november;
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case 12:
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return localizations.december;
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default:
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throw ArgumentError('Month number must be between 1 and 12');
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}
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}
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static String getLocaleFromPath(String path) {
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if (path.startsWith('/de')) {
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return 'de';
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} else if (path.startsWith('/en')) {
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return 'en';
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}
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return 'de'; // Default fallback
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}
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}
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