type HttpReqParam = {
	url: string;
	method?: "GET" | "POST" | "PATCH" | "PUT" | "DELETE";
	params?: Record<string, any>;
	encode?: "form" | "json"; // 入参编码类型
	headers?: Record<string, any>;
};

export default async function httpRequest<T>({ url, method = "GET", params = {}, encode = "json", headers = {} }: HttpReqParam) {
	// const token = sessionStorage.getItem("token");
	// if (token) {
	// 	headers = { Authorization: token, ...headers };
	// }
	if (method === "GET") {
		const query = urlEncode(params);
		const _url = query ? url + "?" + query : url;
		const res = await fetch(_url, { headers });
		return res.json() as Promise<T>;
	} else {
		const body = encode === "json" ? JSON.stringify(params) : urlEncode(params);
		const _headers =
			encode === "json"
				? { "Content-Type": "application/json; charset=utf-8", ...headers }
				: { "Content-Type": "application/x-www-form-urlencoded; charset=utf-8", ...headers };
		const res = await fetch(url, { method, headers: _headers, body });
		return res.json() as Promise<T>;
	}
}

export function urlEncode(params?: Record<string, any>) {
	let query = "";
	if (params && Object.keys(params).length > 0) {
		const qs = [];
		for (let attr in params) {
			qs.push(`${attr}=${encodeURIComponent(params[attr])}`);
		}
		query = qs.join("&");
	}
	return query;
}