[link scan] new ext

ext/link_scan/info.php

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+<?php
+
+declare(strict_types=1);
+
+namespace Shimmie2;
+
+class LinkScanInfo extends ExtensionInfo
+{
+    public const KEY = "link_scan";
+
+    public string $key = self::KEY;
+    public string $name = "Link Scan";
+    public string $url = self::SHIMMIE_URL;
+    public array $authors = self::SHISH_AUTHOR;
+    public string $license = self::LICENSE_GPLV2;
+    public string $description = "Find posts that are referenced in a block of text";
+}

ext/link_scan/main.php

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+<?php
+
+declare(strict_types=1);
+
+namespace Shimmie2;
+
+class LinkScan extends Extension
+{
+    /** @var LinkScanTheme */
+    protected Themelet $theme;
+
+    public function onAdminBuilding(AdminBuildingEvent $event): void
+    {
+        $this->theme->display_form();
+    }
+
+    public function onAdminAction(AdminActionEvent $event): void
+    {
+        global $page;
+        if($event->action == "link_scan") {
+            $text = $_POST['text'];
+            $ids = [];
+
+            $matches = [];
+            preg_match_all("/post\/view\/(\d+)/", $text, $matches);
+            foreach($matches[1] as $match) {
+                $ids[] = $match;
+            }
+            preg_match_all("/\b([0-9a-fA-F]{32})\b/", $text, $matches);
+            foreach($matches[1] as $match) {
+                $ids[] = Image::by_hash($match)->id;
+            }
+
+            $event->redirect = false;
+            $page->set_mode(PageMode::REDIRECT);
+            $page->set_redirect(search_link(["id=".implode(",", $ids)]));
+        }
+    }
+}

ext/link_scan/test.php

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+<?php
+
+declare(strict_types=1);
+
+namespace Shimmie2;
+
+class LinkScanTest extends ShimmiePHPUnitTestCase
+{
+    public function testScanPostView(): void
+    {
+        global $page;
+        $image_id_1 = $this->post_image("tests/pbx_screenshot.jpg", "TeStCase");
+        $image_id_2 = $this->post_image("tests/favicon.png", "TeStCase");
+
+        $_POST['text'] = "
+        Look at http://example.com/post/view/{$image_id_1} there is an image
+
+        http://example.com/post/view/{$image_id_2} is another one
+        ";
+        send_event(new AdminActionEvent("link_scan"));
+        
+        $this->assertEquals(PageMode::REDIRECT, $page->mode);
+        $this->assertEquals("/test/post/list/id%3D{$image_id_1}%2C{$image_id_2}/1", $page->redirect);
+    }
+
+    public function testScanPostHash(): void
+    {
+        global $page;
+        $image_id_1 = $this->post_image("tests/pbx_screenshot.jpg", "TeStCase");
+        $image_id_2 = $this->post_image("tests/favicon.png", "TeStCase");
+
+        $_POST['text'] = "
+        Look at http://example.com/_images/feb01bab5698a11dd87416724c7a89e3/foobar.jpg
+        there is an image or search for e106ea2983e1b77f11e00c0c54e53805";
+        send_event(new AdminActionEvent("link_scan"));
+        
+        $this->assertEquals(PageMode::REDIRECT, $page->mode);
+        $this->assertEquals("/test/post/list/id%3D{$image_id_1}%2C{$image_id_2}/1", $page->redirect);
+    }
+}

ext/link_scan/theme.php

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+<?php
+
+declare(strict_types=1);
+
+namespace Shimmie2;
+
+use function MicroHTML\{TEXTAREA,BR,TABLE,TR,TD};
+
+class LinkScanTheme extends Themelet
+{
+    public function display_form(): void
+    {
+        global $page;
+
+        $html = SHM_SIMPLE_FORM(
+            "admin/link_scan",
+            TABLE(
+                ["class" => "form"],
+                TR(TD(TEXTAREA(["name" => 'text', "placeholder" => 'Paste text']))),
+                TR(TD(SHM_SUBMIT('Find Posts'))),
+            ),
+        );
+        $page->add_block(new Block("Find Referenced Posts", $html));
+    }
+}