From 218c097cc428e04514f294f658e61dab5ac16f21 Mon Sep 17 00:00:00 2001
From: Jephte Clain <Jephte.Clain@univ-reunion.fr>
Date: Mon, 17 Jun 2024 21:38:40 +0400
Subject: [PATCH] modifs.mineures sans commentaires

---
 src/php/time/Elapsed.php | 171 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 171 insertions(+)
 create mode 100644 src/php/time/Elapsed.php

diff --git a/src/php/time/Elapsed.php b/src/php/time/Elapsed.php
new file mode 100644
index 0000000..9d7ed6f
--- /dev/null
+++ b/src/php/time/Elapsed.php
@@ -0,0 +1,171 @@
+<?php
+namespace nur\sery\php\time;
+
+/**
+ * Class Elapsed: durée entre deux événements
+ */
+class Elapsed {
+  const MINUTE = 60;
+  const HOUR = 60 * 60;
+  const DAY = 60 * 60 * 24;
+
+  /** @var int résolution */
+  const RES_SECONDS = 0, RES_MINUTES = 1, RES_HOURS = 2, RES_DAYS = 3;
+
+  private static function format(int $seconds, int $resolution, ?string $prefix=null, ?string $zero=null): string {
+    if ($prefix === null) $prefix = "depuis";
+    switch ($resolution) {
+    case self::RES_DAYS: return self::format_days($seconds, $prefix, $zero);
+    case self::RES_HOURS: return self::format_hours($seconds, $prefix, $zero);
+    case self::RES_MINUTES: return self::format_minutes($seconds, $prefix, $zero);
+    default: return self::format_seconds($seconds, $prefix, $zero);
+    }
+  }
+
+  private static function format_generic(string $prefix, int $d, int $h, int $m): string {
+    $text = $prefix;
+    if ($d > 0) {
+      if ($text !== "") $text .= " ";
+      $text .= sprintf("%d jour", $d);
+      if ($d > 1) $text .= "s";
+    }
+    if ($h > 0) {
+      if ($text !== "") $text .= " ";
+      $text .= sprintf("%d heure", $h);
+      if ($h > 1) $text .= "s";
+    }
+    if ($m > 0) {
+      if ($text !== "") $text .= " ";
+      $text .= sprintf("%d minute", $m);
+      if ($m > 1) $text .= "s";
+    }
+    return $text;
+  }
+
+  private static function format_seconds(int $seconds, string $prefix, ?string $zero): string {
+    $seconds = abs($seconds);
+
+    if ($zero === null) $zero = "maintenant";
+    if ($seconds == 0) return $zero;
+
+    if ($seconds <= 3) {
+      if ($prefix !== "") $prefix .= " ";
+      return "${prefix}quelques secondes";
+    }
+
+    if ($seconds < 60) {
+      if ($prefix !== "") $prefix .= " ";
+      return sprintf("${prefix}%d secondes", $seconds);
+    }
+
+    $oneDay = 60 * 60 * 24;
+    $oneHour = 60 * 60;
+    $oneMinute = 60;
+    $rs = $seconds;
+    $d = intdiv($rs, $oneDay); $rs = $rs % $oneDay;
+    $h = intdiv($rs, $oneHour); $rs = $rs % $oneHour;
+    $m = intdiv($rs, $oneMinute);
+    return self::format_generic($prefix, $d, $h, $m);
+  }
+
+  private static function format_minutes(int $seconds, string $prefix, ?string $zero): string {
+    $minutes = intdiv(abs($seconds), 60);
+
+    if ($zero === null) $zero = "maintenant";
+    if ($minutes == 0) return $zero;
+
+    if ($minutes <= 3) {
+      if ($prefix !== "") $prefix .= " ";
+      return "${prefix}quelques minutes";
+    }
+
+    $oneDay = 60 * 24;
+    $oneHour = 60;
+    $rs = $minutes;
+    $d = intdiv($rs, $oneDay); $rs = $rs % $oneDay;
+    $h = intdiv($rs, $oneHour); $rs = $rs % $oneHour;
+    $m = $rs;
+    return self::format_generic($prefix, $d, $h, $m);
+  }
+
+  private static function format_hours(int $seconds, string $prefix, ?string $zero): string {
+    $minutes = intdiv(abs($seconds), 60);
+
+    if ($zero === null) $zero = "maintenant";
+    if ($minutes == 0) return $zero;
+
+    if ($minutes < 60) {
+      if ($prefix !== "") $prefix .= " ";
+      return "${prefix}moins d'une heure";
+    } elseif ($minutes < 120) {
+      if ($prefix !== "") $prefix .= " ";
+      return "${prefix}moins de deux heures";
+    }
+
+    $oneDay = 60 * 24;
+    $oneHour = 60;
+    $rs = $minutes;
+    $d = intdiv($rs, $oneDay); $rs = $rs % $oneDay;
+    $h = intdiv($rs, $oneHour);
+    return self::format_generic($prefix, $d, $h, 0);
+  }
+
+  private static function format_days(int $seconds, string $prefix, ?string $zero): string {
+    $hours = intdiv(abs($seconds), 60 * 60);
+
+    if ($zero === null) $zero = "aujourd'hui";
+    if ($hours < 24) return $zero;
+
+    $oneDay = 24;
+    $rs = $hours;
+    $d = intdiv($rs, $oneDay);
+    return self::format_generic($prefix, $d, 0, 0);
+  }
+  
+  static function format_at(DateTime $start, ?DateTime $now=null): string {
+    $now ??= new DateTime();
+    $seconds = $now->getTimestamp() - $start->getTimestamp();
+    return (new self($seconds))->formatAt();
+  }
+  
+  static function format_since(DateTime $start, ?DateTime $now=null): string {
+    $now ??= new DateTime();
+    $seconds = $now->getTimestamp() - $start->getTimestamp();
+    return (new self($seconds))->formatSince();
+  }
+  
+  static function format_delay(DateTime $start, ?DateTime $now=null): string {
+    $now ??= new DateTime();
+    $seconds = $now->getTimestamp() - $start->getTimestamp();
+    return (new self($seconds))->formatDelay();
+  }
+
+  function __construct(int $seconds, int $resolution=self::RES_SECONDS) {
+    if ($resolution < self::RES_SECONDS) $resolution = self::RES_SECONDS;
+    elseif ($resolution > self::RES_DAYS) $resolution = self::RES_DAYS;
+    $this->seconds = $seconds;
+    $this->resolution = $resolution;
+  }
+
+  /** @var int */
+  private $seconds;
+
+  /** @var int */
+  private $resolution;
+
+  function formatAt(): string {
+    $seconds = $this->seconds;
+    if ($seconds < 0) return self::format($seconds, $this->resolution, "dans");
+    else return self::format($seconds, $this->resolution, "il y a");
+  }
+
+  function formatSince(): string {
+    $seconds = $this->seconds;
+    if ($seconds < 0) return self::format(-$seconds, $this->resolution, "dans");
+    else return self::format($seconds, $this->resolution, "depuis");
+  }
+
+  function formatDelay(): string {
+    return self::format($this->seconds, $this->resolution, "", "immédiat");
+  }
+}