export interface TimeUnit {
	singular: string
	plural: string
}

export type TranslationValue = string | TimeUnit

export interface LanguageTranslations {
	[key: string]: TranslationValue
}

export type AvailableTimeLanguages = 'en' | 'es' | 'fr' | 'he'

export type DayFormatTypes = 'DD' | 'DDD' | 'DDDD'
export type MonthFormatTypes = 'MM' | 'MMM' | 'MMMM'
export type YearFormatTypes = 'YY' | 'YYYY'
export type HourFormatTypes = 'HH'
export type MinuteFormatTypes = 'mm'
export type SecondFormatTypes = 'ss'
export type MillisecondFormatTypes = 'sss'
export type AmPmFormatTypes = 'AmPm'

export type DateFormatSeparatorTypes = '/' | '-' | ' ' | ':' | '.'

// Common predefined formats instead of template literals
export type CommonDateFormats =
	| `${DayFormatTypes}${DateFormatSeparatorTypes}${MonthFormatTypes}${DateFormatSeparatorTypes}${YearFormatTypes}`
	| `${MonthFormatTypes}${DateFormatSeparatorTypes}${YearFormatTypes}`
	| 'DD.MM.YY' | 'DD.MM.YYYY' | 'DD/MM/YY' | 'DD/MM/YYYY' // European style
	| 'MM.DD.YY' | 'MM.DD.YYYY' | 'MM/DD/YY' | 'MM/DD/YYYY' // US style
	| 'YYYY-MM-DD' | 'YY-MM-DD' // ISO style
	| 'DD MMM YYYY' | 'DD MMMM YYYY' // Long format
	| 'DDD, DD MMM' | 'DDDD, DD MMMM' // Day-focused format
	| 'MMM DD' | 'MMMM DD' // Month-day format

export type CommonTimeFormats =
	| 'HH:mm' | 'HH:mm:ss' | 'HH:mm:ss:sss' // 24-hour format
	| 'HH:mm AmPm' // 12-hour format

// Combined date and time formats
export type CommonDateTimeFormats =
	| `${CommonDateFormats} ${CommonTimeFormats}`
	| `${CommonTimeFormats}, ${CommonDateFormats}`
	| 'YYYY-MM-DD HH:MM' // Explicit ISO-style datetime format

// Named formats
export type NamedFormats =
	| 'ISO'
	| 'ISO8601'
	| 'UTC'
	| 'RFC2822'
	| 'RFC3339'
	| 'UNIX'
	| 'TIMESTAMP'

// Final accepted format type with string fallback for custom formats
export type DateTimeAcceptedFormats =
	| CommonDateFormats
	| CommonTimeFormats
	| CommonDateTimeFormats
	// ^^ Union types for common formats
	| DayFormatTypes
	| MonthFormatTypes
	| YearFormatTypes
	| HourFormatTypes
	| MinuteFormatTypes
	| SecondFormatTypes
	| MillisecondFormatTypes
	// ^^ Union types for individual date parts
	| NamedFormats
	// ^^ Named format shortcuts
	// ! | string
	// ! no string fallback so that autocomplete works (developers should / can always cast to DateTimeAcceptedFormats)