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<?php
/**
* Class for time interval and numeric range handling for reports.
*/
namespace Automattic\Kkart\Admin\API\Reports;
defined( 'ABSPATH' ) || exit;
/**
* Date & time interval and numeric range handling class for Reporting API.
*/
class TimeInterval {
/**
* Format string for ISO DateTime formatter.
*
* @var string
*/
public static $iso_datetime_format = 'Y-m-d\TH:i:s';
/**
* Format string for use in SQL queries.
*
* @var string
*/
public static $sql_datetime_format = 'Y-m-d H:i:s';
/**
* Converts local datetime to GMT/UTC time.
*
* @param string $datetime_string String representation of local datetime.
* @return DateTime
*/
public static function convert_local_datetime_to_gmt( $datetime_string ) {
$datetime = new \DateTime( $datetime_string, new \DateTimeZone( kkart_timezone_string() ) );
$datetime->setTimezone( new \DateTimeZone( 'GMT' ) );
return $datetime;
}
/**
* Returns default 'before' parameter for the reports.
*
* @return DateTime
*/
public static function default_before() {
$datetime = new \KKART_DateTime();
// Set local timezone or offset.
if ( get_option( 'timezone_string' ) ) {
$datetime->setTimezone( new \DateTimeZone( kkart_timezone_string() ) );
} else {
$datetime->set_utc_offset( kkart_timezone_offset() );
}
return $datetime;
}
/**
* Returns default 'after' parameter for the reports.
*
* @return DateTime
*/
public static function default_after() {
$now = time();
$week_back = $now - WEEK_IN_SECONDS;
$datetime = new \KKART_DateTime();
$datetime->setTimestamp( $week_back );
// Set local timezone or offset.
if ( get_option( 'timezone_string' ) ) {
$datetime->setTimezone( new \DateTimeZone( kkart_timezone_string() ) );
} else {
$datetime->set_utc_offset( kkart_timezone_offset() );
}
return $datetime;
}
/**
* Returns date format to be used as grouping clause in SQL.
*
* @param string $time_interval Time interval.
* @param string $table_name Name of the db table relevant for the date constraint.
* @return mixed
*/
public static function db_datetime_format( $time_interval, $table_name ) {
$first_day_of_week = absint( get_option( 'start_of_week' ) );
if ( 1 === $first_day_of_week ) {
// Week begins on Monday, ISO 8601.
$week_format = "DATE_FORMAT({$table_name}.date_created, '%x-%v')";
} else {
// Week begins on day other than specified by ISO 8601, needs to be in sync with function simple_week_number.
$week_format = "CONCAT(YEAR({$table_name}.date_created), '-', LPAD( FLOOR( ( DAYOFYEAR({$table_name}.date_created) + ( ( DATE_FORMAT(MAKEDATE(YEAR({$table_name}.date_created),1), '%w') - $first_day_of_week + 7 ) % 7 ) - 1 ) / 7 ) + 1 , 2, '0'))";
}
// Whenever this is changed, double check method time_interval_id to make sure they are in sync.
$mysql_date_format_mapping = array(
'hour' => "DATE_FORMAT({$table_name}.date_created, '%Y-%m-%d %H')",
'day' => "DATE_FORMAT({$table_name}.date_created, '%Y-%m-%d')",
'week' => $week_format,
'month' => "DATE_FORMAT({$table_name}.date_created, '%Y-%m')",
'quarter' => "CONCAT(YEAR({$table_name}.date_created), '-', QUARTER({$table_name}.date_created))",
'year' => "YEAR({$table_name}.date_created)",
);
return $mysql_date_format_mapping[ $time_interval ];
}
/**
* Returns quarter for the DateTime.
*
* @param DateTime $datetime Local date & time.
* @return int|null
*/
public static function quarter( $datetime ) {
switch ( (int) $datetime->format( 'm' ) ) {
case 1:
case 2:
case 3:
return 1;
case 4:
case 5:
case 6:
return 2;
case 7:
case 8:
case 9:
return 3;
case 10:
case 11:
case 12:
return 4;
}
return null;
}
/**
* Returns simple week number for the DateTime, for week starting on $first_day_of_week.
*
* The first week of the year is considered to be the week containing January 1.
* The second week starts on the next $first_day_of_week.
*
* @param DateTime $datetime Local date for which the week number is to be calculated.
* @param int $first_day_of_week 0 for Sunday to 6 for Saturday.
* @return int
*/
public static function simple_week_number( $datetime, $first_day_of_week ) {
$beg_of_year_day = new \DateTime( "{$datetime->format('Y')}-01-01" );
$adj_day_beg_of_year = ( (int) $beg_of_year_day->format( 'w' ) - $first_day_of_week + 7 ) % 7;
$days_since_start_of_year = (int) $datetime->format( 'z' ) + 1;
return (int) floor( ( ( $days_since_start_of_year + $adj_day_beg_of_year - 1 ) / 7 ) ) + 1;
}
/**
* Returns ISO 8601 week number for the DateTime, if week starts on Monday,
* otherwise returns simple week number.
*
* @see TimeInterval::simple_week_number()
*
* @param DateTime $datetime Local date for which the week number is to be calculated.
* @param int $first_day_of_week 0 for Sunday to 6 for Saturday.
* @return int
*/
public static function week_number( $datetime, $first_day_of_week ) {
if ( 1 === $first_day_of_week ) {
$week_number = (int) $datetime->format( 'W' );
} else {
$week_number = self::simple_week_number( $datetime, $first_day_of_week );
}
return $week_number;
}
/**
* Returns time interval id for the DateTime.
*
* @param string $time_interval Time interval type (week, day, etc).
* @param DateTime $datetime Date & time.
* @return string
*/
public static function time_interval_id( $time_interval, $datetime ) {
// Whenever this is changed, double check method db_datetime_format to make sure they are in sync.
$php_time_format_for = array(
'hour' => 'Y-m-d H',
'day' => 'Y-m-d',
'week' => 'o-W',
'month' => 'Y-m',
'quarter' => 'Y-' . self::quarter( $datetime ),
'year' => 'Y',
);
// If the week does not begin on Monday.
$first_day_of_week = absint( get_option( 'start_of_week' ) );
if ( 'week' === $time_interval && 1 !== $first_day_of_week ) {
$week_no = self::simple_week_number( $datetime, $first_day_of_week );
$week_no = str_pad( $week_no, 2, '0', STR_PAD_LEFT );
$year_no = $datetime->format( 'Y' );
return "$year_no-$week_no";
}
return $datetime->format( $php_time_format_for[ $time_interval ] );
}
/**
* Calculates number of time intervals between two dates, closed interval on both sides.
*
* @param DateTime $start_datetime Start date & time.
* @param DateTime $end_datetime End date & time.
* @param string $interval Time interval increment, e.g. hour, day, week.
*
* @return int
*/
public static function intervals_between( $start_datetime, $end_datetime, $interval ) {
switch ( $interval ) {
case 'hour':
$end_timestamp = (int) $end_datetime->format( 'U' );
$start_timestamp = (int) $start_datetime->format( 'U' );
$addendum = 0;
// modulo HOUR_IN_SECONDS would normally work, but there are non-full hour timezones, e.g. Nepal.
$start_min_sec = (int) $start_datetime->format( 'i' ) * MINUTE_IN_SECONDS + (int) $start_datetime->format( 's' );
$end_min_sec = (int) $end_datetime->format( 'i' ) * MINUTE_IN_SECONDS + (int) $end_datetime->format( 's' );
if ( $end_min_sec < $start_min_sec ) {
$addendum = 1;
}
$diff_timestamp = $end_timestamp - $start_timestamp;
return (int) floor( ( (int) $diff_timestamp ) / HOUR_IN_SECONDS ) + 1 + $addendum;
case 'day':
$end_timestamp = (int) $end_datetime->format( 'U' );
$start_timestamp = (int) $start_datetime->format( 'U' );
$addendum = 0;
$end_hour_min_sec = (int) $end_datetime->format( 'H' ) * HOUR_IN_SECONDS + (int) $end_datetime->format( 'i' ) * MINUTE_IN_SECONDS + (int) $end_datetime->format( 's' );
$start_hour_min_sec = (int) $start_datetime->format( 'H' ) * HOUR_IN_SECONDS + (int) $start_datetime->format( 'i' ) * MINUTE_IN_SECONDS + (int) $start_datetime->format( 's' );
if ( $end_hour_min_sec < $start_hour_min_sec ) {
$addendum = 1;
}
$diff_timestamp = $end_timestamp - $start_timestamp;
return (int) floor( ( (int) $diff_timestamp ) / DAY_IN_SECONDS ) + 1 + $addendum;
case 'week':
// @todo Optimize? approximately day count / 7, but year end is tricky, a week can have fewer days.
$week_count = 0;
do {
$start_datetime = self::next_week_start( $start_datetime );
$week_count++;
} while ( $start_datetime <= $end_datetime );
return $week_count;
case 'month':
// Year diff in months: (end_year - start_year - 1) * 12.
$year_diff_in_months = ( (int) $end_datetime->format( 'Y' ) - (int) $start_datetime->format( 'Y' ) - 1 ) * 12;
// All the months in end_date year plus months from X to 12 in the start_date year.
$month_diff = (int) $end_datetime->format( 'n' ) + ( 12 - (int) $start_datetime->format( 'n' ) );
// Add months for number of years between end_date and start_date.
$month_diff += $year_diff_in_months + 1;
return $month_diff;
case 'quarter':
// Year diff in quarters: (end_year - start_year - 1) * 4.
$year_diff_in_quarters = ( (int) $end_datetime->format( 'Y' ) - (int) $start_datetime->format( 'Y' ) - 1 ) * 4;
// All the quarters in end_date year plus quarters from X to 4 in the start_date year.
$quarter_diff = self::quarter( $end_datetime ) + ( 4 - self::quarter( $start_datetime ) );
// Add quarters for number of years between end_date and start_date.
$quarter_diff += $year_diff_in_quarters + 1;
return $quarter_diff;
case 'year':
$year_diff = (int) $end_datetime->format( 'Y' ) - (int) $start_datetime->format( 'Y' );
return $year_diff + 1;
}
return 0;
}
/**
* Returns a new DateTime object representing the next hour start/previous hour end if reversed.
*
* @param DateTime $datetime Date and time.
* @param bool $reversed Going backwards in time instead of forward.
* @return DateTime
*/
public static function next_hour_start( $datetime, $reversed = false ) {
$hour_increment = $reversed ? 0 : 1;
$timestamp = (int) $datetime->format( 'U' );
$seconds_into_hour = (int) $datetime->format( 'i' ) * MINUTE_IN_SECONDS + (int) $datetime->format( 's' );
$hours_offset_timestamp = $timestamp + ( $hour_increment * HOUR_IN_SECONDS - $seconds_into_hour );
if ( $reversed ) {
$hours_offset_timestamp --;
}
$hours_offset_time = new \DateTime();
$hours_offset_time->setTimestamp( $hours_offset_timestamp );
$hours_offset_time->setTimezone( new \DateTimeZone( kkart_timezone_string() ) );
return $hours_offset_time;
}
/**
* Returns a new DateTime object representing the next day start, or previous day end if reversed.
*
* @param DateTime $datetime Date and time.
* @param bool $reversed Going backwards in time instead of forward.
* @return DateTime
*/
public static function next_day_start( $datetime, $reversed = false ) {
$seconds_into_day = (int) $datetime->format( 'H' ) * HOUR_IN_SECONDS + (int) $datetime->format( 'i' ) * MINUTE_IN_SECONDS + (int) $datetime->format( 's' );
// The day boundary is actually next midnight when going in reverse, so set it to day -1 at 23:59:59.
if ( $reversed ) {
$timestamp = (int) $datetime->format( 'U' );
$next_day_timestamp = $timestamp - ( $seconds_into_day + 1 );
} else {
$day_increment = new \DateInterval( 'P1D' ); // Plus 1 Day.
$next_datetime = clone $datetime;
$next_datetime->add( $day_increment );
$timestamp = (int) $next_datetime->format( 'U' );
$next_day_timestamp = $timestamp - $seconds_into_day;
}
$next_day = new \DateTime();
$next_day->setTimestamp( $next_day_timestamp );
$next_day->setTimezone( new \DateTimeZone( kkart_timezone_string() ) );
return $next_day;
}
/**
* Returns DateTime object representing the next week start, or previous week end if reversed.
*
* @param DateTime $datetime Date and time.
* @param bool $reversed Going backwards in time instead of forward.
* @return DateTime
*/
public static function next_week_start( $datetime, $reversed = false ) {
$first_day_of_week = absint( get_option( 'start_of_week' ) );
$initial_week_no = self::week_number( $datetime, $first_day_of_week );
do {
$datetime = self::next_day_start( $datetime, $reversed );
$current_week_no = self::week_number( $datetime, $first_day_of_week );
} while ( $current_week_no === $initial_week_no );
// The week boundary is actually next midnight when going in reverse, so set it to day -1 at 23:59:59.
if ( $reversed ) {
$timestamp = (int) $datetime->format( 'U' );
$end_of_day_timestamp = floor( $timestamp / DAY_IN_SECONDS ) * DAY_IN_SECONDS + DAY_IN_SECONDS - 1;
$datetime->setTimestamp( $end_of_day_timestamp );
}
return $datetime;
}
/**
* Returns a new DateTime object representing the next month start, or previous month end if reversed.
*
* @param DateTime $datetime Date and time.
* @param bool $reversed Going backwards in time instead of forward.
* @return DateTime
*/
public static function next_month_start( $datetime, $reversed = false ) {
$month_increment = 1;
$year = $datetime->format( 'Y' );
$month = (int) $datetime->format( 'm' );
if ( $reversed ) {
$beg_of_month_datetime = new \DateTime( "$year-$month-01 00:00:00", new \DateTimeZone( kkart_timezone_string() ) );
$timestamp = (int) $beg_of_month_datetime->format( 'U' );
$end_of_prev_month_timestamp = $timestamp - 1;
$datetime->setTimestamp( $end_of_prev_month_timestamp );
} else {
$month += $month_increment;
if ( $month > 12 ) {
$month = 1;
$year ++;
}
$day = '01';
$datetime = new \DateTime( "$year-$month-$day 00:00:00", new \DateTimeZone( kkart_timezone_string() ) );
}
return $datetime;
}
/**
* Returns a new DateTime object representing the next quarter start, or previous quarter end if reversed.
*
* @param DateTime $datetime Date and time.
* @param bool $reversed Going backwards in time instead of forward.
* @return DateTime
*/
public static function next_quarter_start( $datetime, $reversed = false ) {
$year = $datetime->format( 'Y' );
$month = (int) $datetime->format( 'n' );
switch ( $month ) {
case 1:
case 2:
case 3:
if ( $reversed ) {
$month = 1;
} else {
$month = 4;
}
break;
case 4:
case 5:
case 6:
if ( $reversed ) {
$month = 4;
} else {
$month = 7;
}
break;
case 7:
case 8:
case 9:
if ( $reversed ) {
$month = 7;
} else {
$month = 10;
}
break;
case 10:
case 11:
case 12:
if ( $reversed ) {
$month = 10;
} else {
$month = 1;
$year ++;
}
break;
}
$datetime = new \DateTime( "$year-$month-01 00:00:00", new \DateTimeZone( kkart_timezone_string() ) );
if ( $reversed ) {
$timestamp = (int) $datetime->format( 'U' );
$end_of_prev_month_timestamp = $timestamp - 1;
$datetime->setTimestamp( $end_of_prev_month_timestamp );
}
return $datetime;
}
/**
* Return a new DateTime object representing the next year start, or previous year end if reversed.
*
* @param DateTime $datetime Date and time.
* @param bool $reversed Going backwards in time instead of forward.
* @return DateTime
*/
public static function next_year_start( $datetime, $reversed = false ) {
$year_increment = 1;
$year = (int) $datetime->format( 'Y' );
$month = '01';
$day = '01';
if ( $reversed ) {
$datetime = new \DateTime( "$year-$month-$day 00:00:00", new \DateTimeZone( kkart_timezone_string() ) );
$timestamp = (int) $datetime->format( 'U' );
$end_of_prev_year_timestamp = $timestamp - 1;
$datetime->setTimestamp( $end_of_prev_year_timestamp );
} else {
$year += $year_increment;
$datetime = new \DateTime( "$year-$month-$day 00:00:00", new \DateTimeZone( kkart_timezone_string() ) );
}
return $datetime;
}
/**
* Returns beginning of next time interval for provided DateTime.
*
* E.g. for current DateTime, beginning of next day, week, quarter, etc.
*
* @param DateTime $datetime Date and time.
* @param string $time_interval Time interval, e.g. week, day, hour.
* @param bool $reversed Going backwards in time instead of forward.
* @return DateTime
*/
public static function iterate( $datetime, $time_interval, $reversed = false ) {
return call_user_func( array( __CLASS__, "next_{$time_interval}_start" ), $datetime, $reversed );
}
/**
* Returns expected number of items on the page in case of date ordering.
*
* @param int $expected_interval_count Expected number of intervals in total.
* @param int $items_per_page Number of items per page.
* @param int $page_no Page number.
*
* @return float|int
*/
public static function expected_intervals_on_page( $expected_interval_count, $items_per_page, $page_no ) {
$total_pages = (int) ceil( $expected_interval_count / $items_per_page );
if ( $page_no < $total_pages ) {
return $items_per_page;
} elseif ( $page_no === $total_pages ) {
return $expected_interval_count - ( $page_no - 1 ) * $items_per_page;
} else {
return 0;
}
}
/**
* Returns true if there are any intervals that need to be filled in the response.
*
* @param int $expected_interval_count Expected number of intervals in total.
* @param int $db_records Total number of records for given period in the database.
* @param int $items_per_page Number of items per page.
* @param int $page_no Page number.
* @param string $order asc or desc.
* @param string $order_by Column by which the result will be sorted.
* @param int $intervals_count Number of records for given (possibly shortened) time interval.
*
* @return bool
*/
public static function intervals_missing( $expected_interval_count, $db_records, $items_per_page, $page_no, $order, $order_by, $intervals_count ) {
if ( $expected_interval_count <= $db_records ) {
return false;
}
if ( 'date' === $order_by ) {
$expected_intervals_on_page = self::expected_intervals_on_page( $expected_interval_count, $items_per_page, $page_no );
return $intervals_count < $expected_intervals_on_page;
}
if ( 'desc' === $order ) {
return $page_no > floor( $db_records / $items_per_page );
}
if ( 'asc' === $order ) {
return $page_no <= ceil( ( $expected_interval_count - $db_records ) / $items_per_page );
}
// Invalid ordering.
return false;
}
/**
* Normalize "*_between" parameters to "*_min" and "*_max" for numeric values
* and "*_after" and "*_before" for date values.
*
* @param array $request Query params from REST API request.
* @param string|array $param_names One or more param names to handle. Should not include "_between" suffix.
* @param bool $is_date Boolean if the param is date is related.
* @return array Normalized query values.
*/
public static function normalize_between_params( $request, $param_names, $is_date ) {
if ( ! is_array( $param_names ) ) {
$param_names = array( $param_names );
}
$normalized = array();
foreach ( $param_names as $param_name ) {
if ( ! is_array( $request[ $param_name . '_between' ] ) ) {
continue;
}
$range = $request[ $param_name . '_between' ];
if ( 2 !== count( $range ) ) {
continue;
}
$min = $is_date ? '_after' : '_min';
$max = $is_date ? '_before' : '_max';
if ( $range[0] < $range[1] ) {
$normalized[ $param_name . $min ] = $range[0];
$normalized[ $param_name . $max ] = $range[1];
} else {
$normalized[ $param_name . $min ] = $range[1];
$normalized[ $param_name . $max ] = $range[0];
}
}
return $normalized;
}
/**
* Validate a "*_between" range argument (an array with 2 numeric items).
*
* @param mixed $value Parameter value.
* @param WP_REST_Request $request REST Request.
* @param string $param Parameter name.
* @return WP_Error|boolean
*/
public static function rest_validate_between_numeric_arg( $value, $request, $param ) {
if ( ! wp_is_numeric_array( $value ) ) {
return new \WP_Error(
'rest_invalid_param',
/* translators: 1: parameter name */
sprintf( __( '%1$s is not a numerically indexed array.', 'kkart' ), $param )
);
}
if (
2 !== count( $value ) ||
! is_numeric( $value[0] ) ||
! is_numeric( $value[1] )
) {
return new \WP_Error(
'rest_invalid_param',
/* translators: %s: parameter name */
sprintf( __( '%s must contain 2 numbers.', 'kkart' ), $param )
);
}
return true;
}
/**
* Validate a "*_between" range argument (an array with 2 date items).
*
* @param mixed $value Parameter value.
* @param WP_REST_Request $request REST Request.
* @param string $param Parameter name.
* @return WP_Error|boolean
*/
public static function rest_validate_between_date_arg( $value, $request, $param ) {
if ( ! wp_is_numeric_array( $value ) ) {
return new \WP_Error(
'rest_invalid_param',
/* translators: 1: parameter name */
sprintf( __( '%1$s is not a numerically indexed array.', 'kkart' ), $param )
);
}
if (
2 !== count( $value ) ||
! rest_parse_date( $value[0] ) ||
! rest_parse_date( $value[1] )
) {
return new \WP_Error(
'rest_invalid_param',
/* translators: %s: parameter name */
sprintf( __( '%s must contain 2 valid dates.', 'kkart' ), $param )
);
}
return true;
}
}
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