直播日历

2026-07-29 09:10:18 +08:00
parent 7cbc240d63
commit b7ad3fda49
6 changed files with 208 additions and 0 deletions
@@ -0,0 +1,48 @@
+<?php
+
+namespace App\Util;
+
+use Carbon\Carbon;
+
+class VideoCalendarUtil
+{
+    const TITLE_DATE_PATTERN = "/直播于\s*(?:(\d{4})_(\d{1,2})_(\d{1,2})|(\d{4})(\d{2})(\d{2}))/";
+
+    /**
+     * 从稿件标题解析直播日期，支持「直播于 20260111」与「直播于 2019_01_25」两种格式。
+     * 无法解析或日期非法时返回 null。
+     */
+    public static function parse_live_date(?string $title): ?Carbon
+    {
+        if (!$title || !preg_match(static::TITLE_DATE_PATTERN, $title, $matches)) {
+            return null;
+        }
+        if ($matches[1] !== "") {
+            [$year, $month, $day] = [(int)$matches[1], (int)$matches[2], (int)$matches[3]];
+        } else {
+            [$year, $month, $day] = [(int)$matches[4], (int)$matches[5], (int)$matches[6]];
+        }
+        if (!checkdate($month, $day, $year)) {
+            return null;
+        }
+        return Carbon::createFromDate($year, $month, $day)->startOfDay();
+    }
+
+    /**
+     * 按直播日期分组稿件，返回 ['Y-m-d' => [video, ...]]，按日期升序。
+     * 标题无法解析的稿件不会进入结果。
+     */
+    public static function group_by_live_date(iterable $videos): array
+    {
+        $grouped = [];
+        foreach ($videos as $video) {
+            $date = static::parse_live_date($video->title ?? null);
+            if ($date === null) {
+                continue;
+            }
+            $grouped[$date->format("Y-m-d")][] = $video;
+        }
+        ksort($grouped);
+        return $grouped;
+    }
+}