(() => {
	const SCRIPT_ELEMENT = document.currentScript;
	const SCRIPT_URL = new URL(SCRIPT_ELEMENT.src);

	const params_input_func = {
		'width': (value) => (isNumberParam(value) ? Number(value) : 300),
		'height': (value) => (isNumberParam(value) ? Number(value) : 250),
		'spot_id': (value) => (isNumberParam(value) ? Number(value) : undefined)
	};

	const isNumberParam = (value) => (
		!isNaN(Number(value)) &&
		((typeof value === 'string' && value.trim() !== '') || typeof value === 'number')
	);

	const getParams = () => {
		let get_params = {};
		const SCRIPT_URL_PARAMS = SCRIPT_URL.searchParams;
		
		for (const [key, value] of Object.entries(params_input_func)) {
			get_params[key] = value(SCRIPT_URL_PARAMS.get(key));
		}
		return get_params;
	}

	const setting_params = getParams();
	const wrap_div = document.createElement('div')
	SCRIPT_ELEMENT.after(wrap_div);
	wrap_div.style.cssText = `text-align: center; height: ${setting_params['height']}px;`;

	const iframe = wrap_div.appendChild(document.createElement('iframe'));
	iframe.style.cssText = `border: none; width: ${setting_params['width']}px; height: ${setting_params['height']}px;`;
	iframe.src = new URL(`iframe.html?spot_id=${setting_params['spot_id']}&_ver=${new Date().getTime()}`, SCRIPT_URL);

	let parent_widnow = window;
	let touch_flag = true;
	for (let i = 0; i < 10; i++) {
		try {
			parent_widnow.document.addEventListener('touchend', async () => {
				if (touch_flag) {
					iframe.contentWindow.postMessage({
						'message_type': 'touchend'
					}, iframe.src);
					touch_flag = false;
				}
			});
		} catch (e) {
			break;
		}
		parent_widnow = parent_widnow.parent;
	}
})();