<?php

class Api {


	private $actions, $app, $options;


	public function __construct($app) {

		$this->actions = array("get", "getThumbHref", "download", "upload", "delete", "rename");
		$this->app = $app;
		$this->options = $app->get_options();
	}


	public function apply() {

		$action = use_request_param("action");
		json_fail(100, "unsupported request", !in_array($action, $this->actions));

		$methodname = "on_$action";
		$this->$methodname();
	}


	private function on_get() {

		$response = array();

		if (has_request_param("setup")) {

			use_request_param("setup");
			$response["setup"] = $this->app->get_setup();
		}

		if (has_request_param("options")) {

			use_request_param("options");
			$response["options"] = $this->app->get_options();
		}

		if (has_request_param("types")) {

			use_request_param("types");
			$response["types"] = $this->app->get_types();
		}

		if (has_request_param("theme")) {

			use_request_param("theme");
			$response["theme"] = $this->app->get_theme();
		}

		if (has_request_param("langs")) {

			use_request_param("langs");
			$response["langs"] = $this->app->get_l10n_list();
		}

		if (has_request_param("l10n")) {

			use_request_param("l10n");
			$iso_codes = use_request_param("l10nCodes");
			$iso_codes = explode(":", $iso_codes);
			$response["l10n"] = $this->app->get_l10n($iso_codes);
		}

		if (has_request_param("custom")) {

			use_request_param("custom");
			$url = use_request_param("customHref");
			$response["custom"] = $this->app->get_customizations($url);
		}

		if (has_request_param("items")) {

			use_request_param("items");
			$url = use_request_param("itemsHref");
			$what = use_request_param("itemsWhat");
			$what = is_numeric($what) ? intval($what, 10) : 1;
			$response["items"] = $this->app->get_items($url, $what);
		}

		if (count($_REQUEST)) {
			$response["unused"] = $_REQUEST;
		}

		json_exit($response);
	}


	private function on_getThumbHref() {

		json_fail(1, "thumbnails disabled", !$this->options["thumbnails"]["enabled"]);
		json_fail(2, "thumbnails not supported", !HAS_PHP_JPG);

		$type = use_request_param("type");
		$src_url = use_request_param("href");
		$mode = use_request_param("mode");
		$width = use_request_param("width");
		$height = use_request_param("height");

		$thumb = new Thumb($this->app);
		$thumb_url = $thumb->thumb($type, $src_url, $mode, $width, $height);
		json_fail(3, "thumbnail creation failed", $thumb_url === null);

		json_exit(array("absHref" => $thumb_url));
	}


	private function on_download() {

		json_fail(1, "downloads disabled", !$this->options["download"]["enabled"]);

		$as = use_request_param("as");
		$type = use_request_param("type");
		$hrefs = use_request_param("hrefs");

		$archive = new Archive($this->app);

		$hrefs = explode("|:|", trim($hrefs));

		set_time_limit(0);
		header("Content-Type: application/octet-stream");
		header("Content-Disposition: attachment; filename=\"$as\"");
		header("Connection: close");
		$rc = $archive->output($type, $hrefs);

		json_fail(2, "packaging failed", $rc !== 0);
		exit;
	}


	private function on_upload() {

		$href = use_request_param("href");

		json_fail(1, "wrong HTTP method", strtolower($_SERVER["REQUEST_METHOD"]) !== "post");
		json_fail(2, "something went wrong", !array_key_exists("userfile", $_FILES));

		$userfile = $_FILES["userfile"];

		json_fail(3, "something went wrong [" . $userfile["error"] . "]", $userfile["error"] !== 0);
		json_fail(4, "folders not supported", file_get_contents($userfile["tmp_name"]) === "null");

		$upload_dir = $this->app->to_path($href);

		json_fail(5, "upload dir no h5ai folder or ignored", !$this->app->is_managed_url($href) || $this->app->is_ignored($upload_dir));

		$dest = $upload_dir . "/" . utf8_encode($userfile["name"]);

		json_fail(6, "already exists", file_exists($dest));
		json_fail(7, "can't move uploaded file", !move_uploaded_file($userfile["tmp_name"], $dest));
		json_exit();
	}


	private function on_delete() {

		json_fail(1, "deletion disabled", !$this->options["delete"]["enabled"]);

		$hrefs = use_request_param("hrefs");

		$hrefs = explode("|:|", trim($hrefs));
		$errors = array();

		foreach ($hrefs as $href) {

			$d = normalize_path(dirname($href), true);
			$n = basename($href);

			if ($this->app->is_managed_url($href) && !$this->app->is_ignored($n)) {

				$path = $this->app->to_path($href);

				if (!delete_path($path, true)) {
					$errors[] = $href;
				}
			}
		}

		json_fail(2, "deletion failed for some", count($errors) > 0);
		json_exit();
	}


	private function on_rename() {

		json_fail(1, "renaming disabled", !$this->options["rename"]["enabled"]);

		$href = use_request_param("href");
		$name = use_request_param("name");

		$d = normalize_path(dirname($href), true);
		$n = basename($href);

		if ($this->app->is_managed_url($d) && !$this->app->is_ignored($n)) {

			$path = $this->app->to_path($href);
			$folder = normalize_path(dirname($path));

			if (!rename($path, $folder . "/" . $name)) {
				json_fail(2, "renaming failed");
			}
		}

		json_exit();
	}
}