Sách Giáo Khoa Việt Nam - sachgiaokhoa.org

CodeIgniter 4 website: - Catalog 999 SGK (lớp 1-12) từ API, lọc theo lớp/môn/NXB, tìm kiếm - Trang chủ grouped browse (bậc học -> lớp -> môn, ưu tiên môn quan trọng) - Chi tiết sách: metadata đầy đủ, cover nghệ thuật /thumb/{W}x{H}/ - Đọc online qua gate captcha + countdown, PDF viewer pdf.js - Download: captcha + token một lần + auto cache-bust version - Tự đồng bộ catalog/cover khi API thay đổi (refresh:catalog) - Legal: DMCA, miễn trừ trách nhiệm, điều khoản, bảo mật, liên hệ
2026-08-23 07:05:49 +00:00
commit e6b265db99
494 changed files with 134829 additions and 0 deletions
@@ -0,0 +1,69 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Controllers;
+
+use App\Libraries\BookApi;
+use App\Libraries\CoverArt;
+
+/**
+ * Thumbnail endpoint: /thumb/{W}x{H}/{id}.jpg
+ * Lazily generates art-directed thumbnails from the cached original cover.
+ */
+class Thumb extends BaseController
+{
+    private BookApi $api;
+
+    public function __construct()
+    {
+        $this->api = new BookApi();
+    }
+
+    public function serve(string $size, string $file)
+    {
+        // parse size + id
+        if (! preg_match('/^(\d{2,4})x(\d{2,4})$/', $size, $m)) {
+            return $this->response->setStatusCode(400);
+        }
+        [, $w, $h] = $m;
+        $id = preg_replace('/\.jpg$/', '', $file);
+        if (! $id || ! preg_match('/^[a-zA-Z0-9._-]+$/', $id)) {
+            return $this->response->setStatusCode(400);
+        }
+
+        $book = $this->api->book($id);
+        if (! $book || ! $book['coverEndpoint']) {
+            return $this->response->setStatusCode(404);
+        }
+
+        // ensure the original is cached locally (fetch on demand)
+        $dir  = WRITEPATH . 'cache/covers';
+        $orig = $dir . '/' . preg_replace('/[^a-zA-Z0-9_-]/', '_', $id) . '.jpg';
+        if (! is_file($orig)) {
+            $tmp = $orig . '.tmp' . getmypid();
+            if ($this->api->fetchToFile($book['coverEndpoint'], $tmp)) {
+                if (! is_dir($dir)) {
+                    mkdir($dir, 0775, true);
+                }
+                rename($tmp, $orig);
+            } else {
+                @unlink($tmp);
+            }
+        }
+        if (! is_file($orig)) {
+            return $this->response->setStatusCode(404);
+        }
+
+        $thumb = CoverArt::thumb($id, $orig, $book, (int) $w, (int) $h);
+        if (! $thumb || ! is_file($thumb)) {
+            return $this->response->setStatusCode(404);
+        }
+
+        header('Content-Type: image/jpeg');
+        header('Content-Length: ' . (string) filesize($thumb));
+        header('Cache-Control: public, max-age=604800');
+        readfile($thumb);
+        exit;
+    }
+}