import UserScriptEngine from "../../enum/UserScriptEngine";
import getScriptEngine from "./getScriptEngine";
import log from "./log";

/**
 * @deprecated
 */
export default function COFetch(url: URL | string, method: 'get' | 'post' = 'get', body: any = null): Promise<string> {
    return new Promise<string>((resolve, reject) => {
        const engine = getScriptEngine();
        switch (engine) {
            case UserScriptEngine.RAW: {
                console.error(`[wh] 跨域请求错误：${ UserScriptEngine.RAW }环境下无法进行跨域请求`);
                reject(`错误：${ UserScriptEngine.RAW }环境下无法进行跨域请求`);
                break;
            }
            case UserScriptEngine.PDA: {
                const { PDA_httpGet, PDA_httpPost } = window;
                // get
                if (method === 'get') {
                    if (typeof PDA_httpGet !== 'function') {
                        log.error('COFetch网络错误：PDA版本不支持');
                        reject('COFetch网络错误：PDA版本不支持');
                    }
                    PDA_httpGet(url)
                        .then(res => resolve(res.responseText))
                        .catch(e => {
                            log.error('COFetch网络错误', e);
                            reject(`COFetch网络错误 ${ e }`);
                        })
                }
                // post
                else {
                    if (typeof PDA_httpPost !== 'function') {
                        log.error('COFetch网络错误：PDA版本不支持');
                        reject('COFetch网络错误：PDA版本不支持');
                    }
                    PDA_httpPost(url, { 'content-type': 'application/json' }, body)
                        .then(res => resolve(res.responseText))
                        .catch(e => {
                            log.error('COFetch网络错误', e);
                            reject(`COFetch网络错误 ${ e }`);
                        });
                }
                break;
            }
            case UserScriptEngine.GM: {
                let { GM_xmlhttpRequest } = window;
                if (typeof GM_xmlhttpRequest !== 'function') {
                    log.error('COFetch网络错误：用户脚本扩展API错误');
                    reject('错误：用户脚本扩展API错误');
                }
                GM_xmlhttpRequest({
                    method: method,
                    url: url,
                    data: method === 'get' ? null : body,
                    headers: method === 'get' ? null : { 'content-type': 'application/json' },
                    onload: res => resolve(res.response),
                    onerror: res => reject(`连接错误 ${ JSON.stringify(res) }`),
                    ontimeout: res => reject(`连接超时 ${ JSON.stringify(res) }`),
                });
            }
        }
    });
}