const kairos = require('@oxog/kairos');
const holidayEngine = require('@oxog/kairos/plugins/holiday/engine');
const localeUS = require('@oxog/kairos/plugins/locale/en-US');

// Setup with holiday support
kairos.use([holidayEngine, localeUS]);

// Current date/time
const now = kairos();

// Parse dates
const date = kairos('2024-12-25');

// Format dates
console.log(date.format('MMMM D, YYYY')); // December 25, 2024

// Check holidays
console.log(date.isHoliday()); // true
console.log(date.getHolidayName()); // "Christmas Day"

// Date arithmetic
const tomorrow = date.add(1, 'day');
const lastWeek = date.subtract(1, 'week');

// Comparisons
console.log(date.isBefore(tomorrow)); // true
console.log(date.isAfter(lastWeek)); // true

kairos(); // Current date/time
kairos('2024-06-15'); // ISO string
kairos(1718460600000); // Unix timestamp (ms)
kairos([2024, 5, 15]); // Array [year, month, day]
kairos({ year: 2024, month: 6 }); // Object

const date = kairos('2024-06-15');

date.add(1, 'day'); // Add time
date.subtract(2, 'hours'); // Subtract time
date.startOf('month'); // Beginning of month
date.endOf('year'); // End of year
date.clone(); // Create copy

const date1 = kairos('2024-06-15');
const date2 = kairos('2024-06-20');

date1.isBefore(date2); // true
date1.isAfter(date2); // false
date1.isSame(date2, 'month'); // true
date1.isBetween(start, end); // Check if between
date1.diff(date2, 'days'); // -5

const date = kairos('2024-06-15 14:30:00');

date.format('YYYY-MM-DD'); // 2024-06-15
date.format('MMM D, YYYY h:mm A'); // Jun 15, 2024 2:30 PM
date.toISOString(); // 2024-06-15T14:30:00.000Z
date.valueOf(); // Unix timestamp (ms)
date.toDate(); // JavaScript Date object

const holidayEngine = require('@oxog/kairos/plugins/holiday/engine');
const businessPlugin = require('@oxog/kairos/plugins/business/workday');
const localeUS = require('@oxog/kairos/plugins/locale/en-US');
const localeFR = require('@oxog/kairos/plugins/locale/fr-FR');

kairos.use([holidayEngine, businessPlugin, localeUS, localeFR]);

// Check holidays
const christmas = kairos('2024-12-25');
christmas.isHoliday(); // true
christmas.getHolidayName(); // "Christmas Day"

// Get holidays for a year
const holidays2024 = kairos.getHolidays(2024);
// Returns array of holiday dates with names

// Business days with holiday awareness
const date = kairos('2024-12-24');
date.isBusinessDay(); // false (Christmas Eve)
date.nextBusinessDay(); // Skips holidays & weekends
date.addBusinessDays(5); // Holiday-aware calculation

// Locale-specific holidays
kairos.locale('fr-FR');
const bastilleDay = kairos('2024-07-14');
bastilleDay.isHoliday(); // true (Fête Nationale)

// Regional holidays
const spanishHolidays = kairos.getSpanishHolidays('cataluna');
// Returns Catalonia-specific holidays

const durationPlugin = require('@oxog/kairos/plugins/duration/duration');
kairos.use(durationPlugin);

const duration = kairos.duration({ hours: 2, minutes: 30 });
duration.asMinutes(); // 150
duration.humanize(); // "3 hours"
duration.toISOString(); // "PT2H30M"

const rangePlugin = require('@oxog/kairos/plugins/range/range');
kairos.use(rangePlugin);

const range = kairos.range(start, end);
range.contains(date); // Check if date in range
range.overlaps(otherRange); // Check overlap
range.duration(); // Get duration

const relativePlugin = require('@oxog/kairos/plugins/relative/relative');
kairos.use(relativePlugin);

const past = kairos().subtract(2, 'hours');
past.fromNow(); // "2 hours ago"
past.from(reference); // Relative to reference
past.calendar(); // "Today at 2:30 PM"

const timezonePlugin = require('@oxog/kairos/plugins/timezone/timezone');
kairos.use(timezonePlugin);

const local = kairos();
const utc = local.utc(); // Convert to UTC
utc.local(); // Back to local
local.utcOffset(); // Offset in minutes

// Available locales with comprehensive holiday support
const localeUS = require('@oxog/kairos/plugins/locale/en-US'); // 🇺🇸 United States
const localeUK = require('@oxog/kairos/plugins/locale/en-GB'); // 🇬🇧 United Kingdom
const localeDE = require('@oxog/kairos/plugins/locale/de-DE'); // 🇩🇪 Germany
const localeFR = require('@oxog/kairos/plugins/locale/fr-FR'); // 🇫🇷 France
const localeES = require('@oxog/kairos/plugins/locale/es-ES'); // 🇪🇸 Spain
const localeIT = require('@oxog/kairos/plugins/locale/it-IT'); // 🇮🇹 Italy
const localePT = require('@oxog/kairos/plugins/locale/pt-BR'); // 🇧🇷 Brazil
const localeRU = require('@oxog/kairos/plugins/locale/ru-RU'); // 🇷🇺 Russia
const localeCN = require('@oxog/kairos/plugins/locale/zh-CN'); // 🇨🇳 China
const localeJP = require('@oxog/kairos/plugins/locale/ja-JP'); // 🇯🇵 Japan
const localeTR = require('@oxog/kairos/plugins/locale/tr-TR'); // 🇹🇷 Turkey

// Load and use locales
kairos.use([localeFR, localeES, localeIT]);

// Switch between locales dynamically
kairos.setLocale('fr-FR');
const date = kairos('2024-07-14');
date.format('LLLL'); // "dimanche 14 juillet 2024 00:00"
date.isHoliday(); // true (Fête Nationale)

// Each locale includes:
// ✓ Translated month/weekday names
// ✓ Date/time formatting patterns
// ✓ National holidays with local names
// ✓ Regional/state holidays
// ✓ Religious and cultural observances