import { RESTRequestOptions } from "../../../interfaces/RESTInterfaces";
import RESTRequest from "./";
import querystring from "querystring";


export default async function prepare (request: RESTRequest, options: RESTRequestOptions): Promise<void> {
    request.setOptions(options);

    if (!request.requestOptions.url) {
        throw new Error("No url was provided when executing rest.request.prepare");
    }
    if (!request.requestOptions.headers) {
        request.requestOptions.headers = {};
    }
    if (request.requestOptions.followAllRedirects !== false) {
        request.requestOptions.followAllRedirects = true;
    }
    if (!request.requestOptions.method) {
        request.requestOptions.method = "GET";
    }
    if (request.requestOptions.qs) {
        if (!request.requestOptions.url.includes("?")) {
            request.requestOptions.url += `?${querystring.stringify(request.requestOptions.qs as Record<string, string>)}`;
        } else {
            request.requestOptions.url += `&${querystring.stringify(request.requestOptions.qs as Record<string, string>)}`;
        }
    }
    if ((request.requestOptions.xcsrf !== false && request.requestOptions.method.toLowerCase() !== "get") || request.requestOptions.xcsrf === true) {
        request.requestOptions.headers = {
            ...request.requestOptions.headers,
            "X-CSRF-TOKEN": await request.controller.getXCSRFToken()
        };
        if (!request.requestOptions.responseOptions) {
            request.requestOptions.responseOptions = {};
        }
        if (!request.requestOptions.responseOptions.disallowedStatusMessages) {
            request.requestOptions.responseOptions.disallowedStatusMessages = [];
        }
        request.requestOptions.responseOptions.disallowedStatusMessages.push("Token Validation Failed");
    }
    if (request.requestOptions.json) {
        request.requestOptions.body = typeof request.requestOptions.json === "string" ? request.requestOptions.json : JSON.stringify(request.requestOptions.json);
        request.requestOptions.headers["content-type"] = "application/json";
        delete request.requestOptions.json;
    }
    if (!request.requestOptions.excludeCookies) {
        request.requestOptions.headers.Cookie = request.controller.cookieJar.getCookieStringSync(request.requestOptions.url);
    }

    // -- Utilities

    // Making sure the library does not throw errors if the request fails for some reason
    // We want to handle any issues ourselves
    request.requestOptions.throwHttpErrors = false;
}