<?php

namespace Automattic\P2\Themes\P2020\Date;

/**
* Get compact view timpestamp  PHP version of  compactViewTimestamp
 *
* @param string $date_string_utc
*
* @return string
* @throws \Exception
*/
function compact_human_date( $date_string_utc ) {
	global $o2;
	$o2_options    = $o2->options;
	$blog_timezone = new \DateTimeZone( $o2_options['options']['blogTimezoneString'] );
	$now           = new \DateTime();
	$now->setTimezone( $blog_timezone );

	$given_date = new \DateTime( $date_string_utc, new \DateTimeZone( 'UTC' ) );
	$given_date->setTimezone( $blog_timezone );
	$diff = $now->diff( $given_date );

	if ( $diff->days > 0 ) {
		if ( $now->format( 'Y' ) === $given_date->format( 'Y' ) ) {
			return $given_date->format( 'M d' );
		}
		return $given_date->format( ' M d, Y' );
	}

	if ( $diff->h > 0 ) {
		return $diff->h . _x( 'h ago', 'Post publish date (hours since)', 'p2020' );
	}

	if ( $diff->i < 5 ) {
		return _x( 'Just now', 'Post publish date', 'p2020' );
	} else {
		return $diff->i . _x( 'm ago', 'Post publish date (minutes since)', 'p2020' );
	}
}

/**
 * PHP implementation of moment.fromNow, but only of a difference of < 1 day
 * @param $diff
 *
 * @return string|void
 */
function from_now( $diff ) {
	// Just display the largest relative unit
	if ( $diff->h > 0 ) {
		if ( $diff->i > 29 ) {
			$hours = floor( ( $diff->h * 60 + $diff->i ) / 60 );
		} else {
			$hours = $diff->h;
		}

		/* Translators: %s is a number */
		return sprintf( _nx( '%s hour ago', '%s hours  ago', $hours, 'time ago in hours', 'p2020' ), number_format_i18n( $hours ) );

	} else {
		if ( $diff->i > 44 ) {
			return __( 'an hour ago', 'p2020' );
		}

		if ( ( 1 === $diff->i && $diff->s > 29 ) || $diff->i > 1 ) {
			$minutes = floor( ( $diff->i * 60 + $diff->s ) / 60 );
			/* Translators: %s is a number */
			return sprintf( _nx( '%s min ago', '%s mins  ago', $minutes, 'time ago in minutes', 'p2020' ), number_format_i18n( $minutes ) );
		}

		if ( $diff->s > 44 ) {
			return __( 'a minute ago', 'p2020' );
		}

		if ( $diff->s > 10 ) {
			/* Translators: %s is a number */
			return sprintf( _x( '%s seconds ago', 'time ago in seconds', 'p2020' ), $diff->s );
		}
	}

	return __( 'a few seconds ago', 'p2020' );
}

/**
 * Get human friendly date for default posts PHP version of Utilities.timestamp
 *
 * @param string $date_string_utc
 * @param bool $compact_allowed
 * @return string
 */
function default_human_date( $date_string_utc, $compact_allowed ) {
	global $o2;
	$o2_options    = $o2->options;
	$blog_timezone = new \DateTimeZone( $o2_options['options']['blogTimezoneString'] );
	$now           = new \DateTime();
	$now->setTimezone( $blog_timezone );

	$yesterday = new \DateTime( 'yesterday' );
	$yesterday->setTimezone( $blog_timezone );

	$given_date = new \DateTime( $date_string_utc, new \DateTimeZone( 'UTC' ) );
	$given_date->setTimezone( $blog_timezone );
	$diff = $now->diff( $given_date );

	// Handle compact time formats
	$compact = wp_is_mobile();

	// Compact versus long-form
	if ( $compact && $compact_allowed ) {
		// Just display the largest relative unit
		if ( $diff->y > 0 ) {
			return sprintf( $o2_options['options']['compactFormat']['years'], $diff->y );
		}

		if ( $diff->m > 0 ) {
			return sprintf( $o2_options['options']['compactFormat']['months'], $diff->m );
		}

		if ( $diff->d > 7 ) {
			$weeks = round( $diff->d / 7 );
			return sprintf( $o2_options['options']['compactFormat']['weeks'], $weeks );
		}

		if ( $diff->d > 0 ) {
			return sprintf( $o2_options['options']['compactFormat']['days'], $diff->d );
		}

		if ( $diff->h > 0 ) {
			return sprintf( $o2_options['options']['compactFormat']['hours'], $diff->h );
		}

		if ( $diff->i > 0 ) {
			return sprintf( $o2_options['options']['compactFormat']['minutes'], $diff->i );
		}

		return sprintf( $o2_options['options']['compactFormat']['seconds'], $diff->s );

	}

	if ( $given_date->format( 'Y-m-d' ) === $now->format( 'Y-m-d' ) ) {
		return from_now( $diff );
	}

	if ( $given_date->format( 'Y-m-d' ) === $yesterday->format( 'Y-m-d' ) ) {
		// Display a relative time yesterday
		return sprintf( $o2_options['options']['yesterdayFormat'], $given_date->format( $o2_options['options']['timeFormat'] ) );
	}

	if ( 0 === $diff->days ) {
		if ( 0 === $diff->h && 0 === $diff->i ) {
			// seconds ago
			return sprintf( $o2_options['options']['compactFormat']['seconds'], $diff->s );
		}

		// Display a relative time today
		return from_now( $diff );
	}

	// Just display a time
	return sprintf( $o2_options['options']['timestampFormat'], $given_date->format( $o2_options['options']['timeFormat'] ), $given_date->format( $o2_options['options']['dateFormat'] ) );
}