Admin/Public: generate catalog thumbnails on file updates

2026-02-21 13:45:09 +03:00
parent a6d5ab4c57
commit def543f813
4 changed files with 193 additions and 1 deletions
@@ -0,0 +1,131 @@
+<?php
+
+declare(strict_types=1);
+
+function thumbRelativePathForSource(string $sourceRelPath): string
+{
+    $normalized = ltrim(str_replace('\\', '/', $sourceRelPath), '/');
+    $hash = sha1($normalized);
+    $base = (string)pathinfo($normalized, PATHINFO_FILENAME);
+    $safeBase = preg_replace('/[^A-Za-z0-9._-]+/', '_', $base) ?? 'photo';
+    $safeBase = trim($safeBase, '._-');
+    if ($safeBase === '') {
+        $safeBase = 'photo';
+    }
+
+    return 'thumbs/' . substr($hash, 0, 2) . '/' . substr($hash, 2, 2) . '/' . $safeBase . '_' . $hash . '.jpg';
+}
+
+function thumbAbsolutePathForSource(string $projectRoot, string $sourceRelPath): string
+{
+    return rtrim($projectRoot, '/') . '/' . ltrim(thumbRelativePathForSource($sourceRelPath), '/');
+}
+
+function ensureThumbForSource(string $projectRoot, string $sourceRelPath, int $maxWidth = 520, int $maxHeight = 360, int $quality = 82): ?string
+{
+    $normalized = ltrim(str_replace('\\', '/', $sourceRelPath), '/');
+    if ($normalized === '') {
+        return null;
+    }
+
+    $sourceAbs = rtrim($projectRoot, '/') . '/' . $normalized;
+    if (!is_file($sourceAbs)) {
+        return null;
+    }
+
+    $thumbRel = thumbRelativePathForSource($normalized);
+    $thumbAbs = rtrim($projectRoot, '/') . '/' . ltrim($thumbRel, '/');
+    $srcMtime = (int)(filemtime($sourceAbs) ?: 0);
+    $thumbMtime = (int)(filemtime($thumbAbs) ?: 0);
+    if ($thumbMtime > 0 && $thumbMtime >= $srcMtime) {
+        return $thumbRel;
+    }
+
+    $dir = dirname($thumbAbs);
+    if (!is_dir($dir) && !mkdir($dir, 0775, true) && !is_dir($dir)) {
+        return null;
+    }
+
+    if (extension_loaded('imagick') && createThumbWithImagick($sourceAbs, $thumbAbs, $maxWidth, $maxHeight, $quality)) {
+        return $thumbRel;
+    }
+    if (createThumbWithGd($sourceAbs, $thumbAbs, $maxWidth, $maxHeight, $quality)) {
+        return $thumbRel;
+    }
+
+    return null;
+}
+
+function deleteThumbBySourcePath(string $projectRoot, string $sourceRelPath): void
+{
+    $normalized = ltrim(str_replace('\\', '/', $sourceRelPath), '/');
+    if ($normalized === '') {
+        return;
+    }
+
+    $abs = thumbAbsolutePathForSource($projectRoot, $normalized);
+    if (is_file($abs)) {
+        @unlink($abs);
+    }
+}
+
+function createThumbWithImagick(string $sourceAbs, string $thumbAbs, int $maxWidth, int $maxHeight, int $quality): bool
+{
+    try {
+        $img = new Imagick($sourceAbs);
+        if (method_exists($img, 'autoOrient')) {
+            $img->autoOrient();
+        } else {
+            $img->setImageOrientation(Imagick::ORIENTATION_TOPLEFT);
+        }
+        $img->thumbnailImage(max(1, $maxWidth), max(1, $maxHeight), true, true);
+        $img->setImageFormat('jpeg');
+        $img->setImageCompressionQuality(max(30, min(95, $quality)));
+        $img->stripImage();
+        $ok = $img->writeImage($thumbAbs);
+        $img->clear();
+        $img->destroy();
+        return (bool)$ok;
+    } catch (Throwable) {
+        return false;
+    }
+}
+
+function createThumbWithGd(string $sourceAbs, string $thumbAbs, int $maxWidth, int $maxHeight, int $quality): bool
+{
+    [$srcW, $srcH, $type] = @getimagesize($sourceAbs) ?: [0, 0, 0];
+    if ($srcW < 1 || $srcH < 1) {
+        return false;
+    }
+
+    $src = match ($type) {
+        IMAGETYPE_JPEG => @imagecreatefromjpeg($sourceAbs),
+        IMAGETYPE_PNG => @imagecreatefrompng($sourceAbs),
+        IMAGETYPE_GIF => @imagecreatefromgif($sourceAbs),
+        IMAGETYPE_WEBP => function_exists('imagecreatefromwebp') ? @imagecreatefromwebp($sourceAbs) : false,
+        default => false,
+    };
+    if (!$src) {
+        return false;
+    }
+
+    $scale = min($maxWidth / $srcW, $maxHeight / $srcH, 1);
+    $dstW = max(1, (int)round($srcW * $scale));
+    $dstH = max(1, (int)round($srcH * $scale));
+
+    $dst = imagecreatetruecolor($dstW, $dstH);
+    if ($dst === false) {
+        imagedestroy($src);
+        return false;
+    }
+
+    $bg = imagecolorallocate($dst, 255, 255, 255);
+    imagefill($dst, 0, 0, $bg);
+
+    $okCopy = imagecopyresampled($dst, $src, 0, 0, 0, 0, $dstW, $dstH, $srcW, $srcH);
+    $okSave = $okCopy && imagejpeg($dst, $thumbAbs, max(30, min(95, $quality)));
+
+    imagedestroy($src);
+    imagedestroy($dst);
+    return (bool)$okSave;
+}