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<?php |
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namespace Helix\DB\Fluent\DateTime; |
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use Helix\DB\Fluent\DateTime; |
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use Helix\DB\Fluent\Num; |
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use Helix\DB\Fluent\Text; |
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use Helix\DB\Fluent\Value\ValueTrait; |
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/** |
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* Produces datetime related expressions for the instance. |
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* |
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* Each DBMS has its own quirks with dates, which is beyond the scope of this library. |
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* |
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* @see https://sqlite.org/lang_datefunc.html |
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* @see https://dev.mysql.com/doc/refman/8.0/en/date-and-time-functions.html#function_date-format |
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*/ |
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trait DateTimeTrait { |
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use ValueTrait; |
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/** |
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* `YYYY-MM-DD` |
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* |
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* @return Text |
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*/ |
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public function date () { |
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return $this->dateFormat('%Y-%m-%d'); |
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} |
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/** |
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* Date formatting expression using a driver-appropriate function. |
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* |
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* @param string|string[] $format Format, or formats keyed by driver name. |
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* @return Text |
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*/ |
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public function dateFormat ($format) { |
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if (is_array($format)) { |
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$format = $format[$this->db->getDriver()]; |
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} |
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$format = $this->db->quote($format); |
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if ($this->db->isSQLite()) { |
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return Text::factory($this->db, "STRFTIME({$format},{$this})"); |
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} |
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return Text::factory($this->db, "DATE_FORMAT({$this},{$format})"); |
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} |
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/** |
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* `YYYY-MM-DD hh:mm:ss` |
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* |
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* @return Text |
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*/ |
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public function datetime () { |
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return $this->dateFormat([ |
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'mysql' => '%Y-%m-%d %H:%i:%S', |
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'sqlite' => '%Y-%m-%d %H:%M:%S' |
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]); |
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} |
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/** |
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* `01` to `31` |
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* |
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* @return Num |
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*/ |
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public function day () { |
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return Num::factory($this->db, $this->dateFormat('%d')); |
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} |
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/** |
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* `0` to `6` (Sunday is `0`) |
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* |
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* @return Num |
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*/ |
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public function dayOfWeek () { |
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return Num::factory($this->db, $this->dateFormat('%w')); |
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} |
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/** |
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* `001` to `366` (365 + 1 during leap year) |
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* |
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* @return Num |
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*/ |
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public function dayOfYear () { |
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return Num::factory($this->db, $this->dateFormat('%j')); |
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} |
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/** |
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* `00` to `23` |
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* |
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* @return Num |
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*/ |
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public function hours () { |
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return Num::factory($this->db, $this->dateFormat('%H')); |
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} |
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/** |
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* ISO-8601 compatible datetime string, offset `Z` (UTC/Zulu) |
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* |
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* https://en.wikipedia.org/wiki/ISO_8601 |
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* |
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* @return Text |
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*/ |
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public function iso8601 () { |
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return $this->dateFormat([ |
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'mysql' => '%Y-%m-%dT%H:%i:%SZ', |
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'sqlite' => '%Y-%m-%dT%H:%M:%SZ', |
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]); |
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} |
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/** |
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* `00` to `59` |
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* |
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* @return Num |
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*/ |
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public function minutes () { |
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return Num::factory($this->db, $this->dateFormat([ |
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'mysql' => '%i', |
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'sqlite' => '%M' |
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])); |
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} |
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/** |
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* `01` to `12` |
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* |
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* @return Num |
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*/ |
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public function month () { |
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return Num::factory($this->db, $this->dateFormat('%m')); |
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} |
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/** |
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* `00` to `59` |
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* |
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* @return Num |
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*/ |
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public function seconds () { |
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return Num::factory($this->db, $this->dateFormat('%S')); |
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} |
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/** |
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* `00:00:00` to `23:59:59` |
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* |
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* @return Text |
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*/ |
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public function time () { |
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return $this->dateFormat([ |
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'mysql' => '%H:%i:%S', |
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'sqlite' => '%H:%M:%S' |
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]); |
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} |
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/** |
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* Unix timestamp. |
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* |
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* @return Num |
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*/ |
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public function timestamp () { |
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if ($this->db->isSQLite()) { |
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return Num::factory($this->db, "STRFTIME('%s',{$this})"); |
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} |
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return Num::factory($this->db, "UNIX_TIMESTAMP({$this})"); |
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} |
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/** |
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* Changes the timezone from UTC to the local timezone. |
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* |
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* - SQLite: Uses the operating system's timezone. |
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* - MySQL: Uses PHP's timezone. |
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* |
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* > Warning: Chaining this multiple times will further change the timezone offset. |
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* |
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* @return DateTime |
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*/ |
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public function toLocalTz () { |
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if ($this->db->isSQLite()) { |
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// docs: |
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// > The "localtime" modifier (12) assumes the time value to its left is in |
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// > Universal Coordinated Time (UTC) and adjusts that time value so that it is in localtime. |
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// > If "localtime" follows a time that is not UTC, then the behavior is undefined. |
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return DateTime::factory($this->db, "DATETIME({$this},'localtime')"); |
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} |
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$local = date_default_timezone_get(); |
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return DateTime::factory($this->db, "CONVERT_TZ({$this},'UTC','{$local}')"); |
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} |
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/** |
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* Changes the timezone from the local timezone to UTC. |
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* |
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* > Warning: Datetimes are already stored and retrieved as UTC. |
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* > Only use this if you know the expression is in the local timezone. |
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* |
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* > Warning: Chaining this multiple times will further change the timezone offset. |
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* |
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* @return DateTime |
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*/ |
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public function toUtc () { |
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if ($this->db->isSQLite()) { |
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// docs: |
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// > "utc" assumes that the time value to its left is in the local timezone |
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// > and adjusts that time value to be in UTC. If the time to the left is not in localtime, |
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// > then the result of "utc" is undefined. |
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return DateTime::factory($this->db, "DATETIME({$this},'utc')"); |
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} |
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$local = date_default_timezone_get(); |
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return DateTime::factory($this->db, "CONVERT_TZ({$this},'{$local}','UTC')"); |
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} |
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/** |
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* `00` to `53` |
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* |
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* @return Num |
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*/ |
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public function weekOfYear () { |
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return Num::factory($this->db, $this->dateFormat([ |
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'mysql' => '%U', |
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'sqlite' => '%W' |
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])); |
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} |
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/** |
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* `YYYY` |
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* |
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* @return Num |
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*/ |
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public function year () { |
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return Num::factory($this->db, $this->dateFormat('%Y')); |
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} |
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} |
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