Initial commit: WordPress wp-content (themes, plugins, languages)

- Theme: momentry (custom theme with REST API routes)
- Plugins: code-snippets (contains all API proxies)
- Languages: zh_TW translations
- Excludes: cache, backups, uploads, logs

plugins/code-snippets/php/export/class-export-attachment.php

@@ -0,0 +1,55 @@
+<?php
+
+namespace Code_Snippets;
+
+/**
+ * Handles exporting snippets from the site to a downloadable file over HTTP.
+ *
+ * @package Code_Snippets
+ */
+class Export_Attachment extends Export {
+
+	/**
+	 * Set up the current page to act like a downloadable file instead of being shown in the browser
+	 *
+	 * @param string $language  File format. Used for file extension.
+	 * @param string $mime_type File MIME type. Used for Content-Type header.
+	 */
+	private function do_headers( string $language, string $mime_type = 'text/plain' ) {
+		header( 'Content-Disposition: attachment; filename=' . sanitize_file_name( $this->build_filename( $language ) ) );
+		header( sprintf( 'Content-Type: %s; charset=%s', sanitize_mime_type( $mime_type ), get_bloginfo( 'charset' ) ) );
+	}
+
+	/**
+	 * Export snippets in JSON format as a downloadable file.
+	 */
+	public function download_snippets_json() {
+		$this->do_headers( 'json', 'application/json' );
+		// phpcs:disable WordPress.Security.EscapeOutput.OutputNotEscaped
+		echo wp_json_encode(
+			$this->create_export_object(),
+			apply_filters( 'code_snippets/export/json_encode_options', 0 )
+		);
+		exit;
+	}
+
+	/**
+	 * Export snippets in their code file format.
+	 */
+	public function download_snippets_code() {
+		$lang = $this->snippets_list[0]->lang;
+
+		$mime_types = [
+			'php'  => 'text/php',
+			'css'  => 'text/css',
+			'js'   => 'text/javascript',
+			'json' => 'application/json',
+		];
+
+		$this->do_headers( $lang, $mime_types[ $lang ] ?? 'text/plain' );
+
+		// phpcs:disable WordPress.Security.EscapeOutput.OutputNotEscaped
+		echo $this->export_snippets_code( $this->snippets_list[0]->type );
+		exit;
+	}
+}