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wwwroot/js/utils/DateService.d.ts

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+/**
+ * DateService - Unified date/time service using day.js
+ * Handles all date operations, timezone conversions, and formatting
+ */
+import { Configuration } from '../configurations/CalendarConfig';
+export declare class DateService {
+    private timezone;
+    constructor(config: Configuration);
+    /**
+     * Convert local date to UTC ISO string
+     * @param localDate - Date in local timezone
+     * @returns ISO string in UTC (with 'Z' suffix)
+     */
+    toUTC(localDate: Date): string;
+    /**
+     * Convert UTC ISO string to local date
+     * @param utcString - ISO string in UTC
+     * @returns Date in local timezone
+     */
+    fromUTC(utcString: string): Date;
+    /**
+     * Format time as HH:mm or HH:mm:ss
+     * @param date - Date to format
+     * @param showSeconds - Include seconds in output
+     * @returns Formatted time string
+     */
+    formatTime(date: Date, showSeconds?: boolean): string;
+    /**
+     * Format time range as "HH:mm - HH:mm"
+     * @param start - Start date
+     * @param end - End date
+     * @returns Formatted time range
+     */
+    formatTimeRange(start: Date, end: Date): string;
+    /**
+     * Format date and time in technical format: yyyy-MM-dd HH:mm:ss
+     * @param date - Date to format
+     * @returns Technical datetime string
+     */
+    formatTechnicalDateTime(date: Date): string;
+    /**
+     * Format date as yyyy-MM-dd
+     * @param date - Date to format
+     * @returns ISO date string
+     */
+    formatDate(date: Date): string;
+    /**
+     * Format date as "Month Year" (e.g., "January 2025")
+     * @param date - Date to format
+     * @param locale - Locale for month name (default: 'en-US')
+     * @returns Formatted month and year
+     */
+    formatMonthYear(date: Date, locale?: string): string;
+    /**
+     * Format date as ISO string (same as formatDate for compatibility)
+     * @param date - Date to format
+     * @returns ISO date string
+     */
+    formatISODate(date: Date): string;
+    /**
+     * Format time in 12-hour format with AM/PM
+     * @param date - Date to format
+     * @returns Time string in 12-hour format (e.g., "2:30 PM")
+     */
+    formatTime12(date: Date): string;
+    /**
+     * Get day name for a date
+     * @param date - Date to get day name for
+     * @param format - 'short' (e.g., 'Mon') or 'long' (e.g., 'Monday')
+     * @param locale - Locale for day name (default: 'da-DK')
+     * @returns Day name
+     */
+    getDayName(date: Date, format?: 'short' | 'long', locale?: string): string;
+    /**
+     * Format a date range with customizable options
+     * @param start - Start date
+     * @param end - End date
+     * @param options - Formatting options
+     * @returns Formatted date range string
+     */
+    formatDateRange(start: Date, end: Date, options?: {
+        locale?: string;
+        month?: 'numeric' | '2-digit' | 'long' | 'short' | 'narrow';
+        day?: 'numeric' | '2-digit';
+        year?: 'numeric' | '2-digit';
+    }): string;
+    /**
+     * Convert time string (HH:mm or HH:mm:ss) to total minutes since midnight
+     * @param timeString - Time in format HH:mm or HH:mm:ss
+     * @returns Total minutes since midnight
+     */
+    timeToMinutes(timeString: string): number;
+    /**
+     * Convert total minutes since midnight to time string HH:mm
+     * @param totalMinutes - Minutes since midnight
+     * @returns Time string in format HH:mm
+     */
+    minutesToTime(totalMinutes: number): string;
+    /**
+     * Format time from total minutes (alias for minutesToTime)
+     * @param totalMinutes - Minutes since midnight
+     * @returns Time string in format HH:mm
+     */
+    formatTimeFromMinutes(totalMinutes: number): string;
+    /**
+     * Get minutes since midnight for a given date
+     * @param date - Date to calculate from
+     * @returns Minutes since midnight
+     */
+    getMinutesSinceMidnight(date: Date): number;
+    /**
+     * Calculate duration in minutes between two dates
+     * @param start - Start date or ISO string
+     * @param end - End date or ISO string
+     * @returns Duration in minutes
+     */
+    getDurationMinutes(start: Date | string, end: Date | string): number;
+    /**
+     * Get start and end of week (Monday to Sunday)
+     * @param date - Reference date
+     * @returns Object with start and end dates
+     */
+    getWeekBounds(date: Date): {
+        start: Date;
+        end: Date;
+    };
+    /**
+     * Add weeks to a date
+     * @param date - Base date
+     * @param weeks - Number of weeks to add (can be negative)
+     * @returns New date
+     */
+    addWeeks(date: Date, weeks: number): Date;
+    /**
+     * Add months to a date
+     * @param date - Base date
+     * @param months - Number of months to add (can be negative)
+     * @returns New date
+     */
+    addMonths(date: Date, months: number): Date;
+    /**
+     * Get ISO week number (1-53)
+     * @param date - Date to get week number for
+     * @returns ISO week number
+     */
+    getWeekNumber(date: Date): number;
+    /**
+     * Get all dates in a full week (7 days starting from given date)
+     * @param weekStart - Start date of the week
+     * @returns Array of 7 dates
+     */
+    getFullWeekDates(weekStart: Date): Date[];
+    /**
+     * Get dates for work week using ISO 8601 day numbering (Monday=1, Sunday=7)
+     * @param weekStart - Any date in the week
+     * @param workDays - Array of ISO day numbers (1=Monday, 7=Sunday)
+     * @returns Array of dates for the specified work days
+     */
+    getWorkWeekDates(weekStart: Date, workDays: number[]): Date[];
+    /**
+     * Create a date at a specific time (minutes since midnight)
+     * @param baseDate - Base date (date component)
+     * @param totalMinutes - Minutes since midnight
+     * @returns New date with specified time
+     */
+    createDateAtTime(baseDate: Date, totalMinutes: number): Date;
+    /**
+     * Snap date to nearest interval
+     * @param date - Date to snap
+     * @param intervalMinutes - Snap interval in minutes
+     * @returns Snapped date
+     */
+    snapToInterval(date: Date, intervalMinutes: number): Date;
+    /**
+     * Check if two dates are the same day
+     * @param date1 - First date
+     * @param date2 - Second date
+     * @returns True if same day
+     */
+    isSameDay(date1: Date, date2: Date): boolean;
+    /**
+     * Get start of day
+     * @param date - Date
+     * @returns Start of day (00:00:00)
+     */
+    startOfDay(date: Date): Date;
+    /**
+     * Get end of day
+     * @param date - Date
+     * @returns End of day (23:59:59.999)
+     */
+    endOfDay(date: Date): Date;
+    /**
+     * Add days to a date
+     * @param date - Base date
+     * @param days - Number of days to add (can be negative)
+     * @returns New date
+     */
+    addDays(date: Date, days: number): Date;
+    /**
+     * Add minutes to a date
+     * @param date - Base date
+     * @param minutes - Number of minutes to add (can be negative)
+     * @returns New date
+     */
+    addMinutes(date: Date, minutes: number): Date;
+    /**
+     * Parse ISO string to date
+     * @param isoString - ISO date string
+     * @returns Parsed date
+     */
+    parseISO(isoString: string): Date;
+    /**
+     * Check if date is valid
+     * @param date - Date to check
+     * @returns True if valid
+     */
+    isValid(date: Date): boolean;
+    /**
+     * Calculate difference in calendar days between two dates
+     * @param date1 - First date
+     * @param date2 - Second date
+     * @returns Number of calendar days between dates (can be negative)
+     */
+    differenceInCalendarDays(date1: Date, date2: Date): number;
+    /**
+     * Validate date range (start must be before or equal to end)
+     * @param start - Start date
+     * @param end - End date
+     * @returns True if valid range
+     */
+    isValidRange(start: Date, end: Date): boolean;
+    /**
+     * Check if date is within reasonable bounds (1900-2100)
+     * @param date - Date to check
+     * @returns True if within bounds
+     */
+    isWithinBounds(date: Date): boolean;
+    /**
+     * Validate date with comprehensive checks
+     * @param date - Date to validate
+     * @param options - Validation options
+     * @returns Validation result with error message
+     */
+    validateDate(date: Date, options?: {
+        requireFuture?: boolean;
+        requirePast?: boolean;
+        minDate?: Date;
+        maxDate?: Date;
+    }): {
+        valid: boolean;
+        error?: string;
+    };
+}