'use strict';
const request = require('superagent')

class paasRequest {
    constructor(root) {
        this.root = root;
    }

    #buildUrl = (url) => {
        return `${this.root}/${url}`;
    }

    #resultHandler = (resolve, reject) => {
        return (err, res) => {
            if (err) {
                reject(err);
            } else {
                resolve(res.body);
            }
        };
    }

    get = (url, { query, header = {} }) => {
        return new Promise((resolve, reject) => {
            request.get(this.#buildUrl(url)).set(header).query(query).end(this.#resultHandler(resolve, reject));
        })
    }

    post = (url, data, query) => {
        return new Promise((resolve, reject) => {
            request.post(this.#buildUrl(url, this.root)).set(header).query(query).send(data).end(this.#resultHandler(resolve, reject));
        })
    }

    put = (url, data) => {
        return new Promise((resolve, reject) => {
            request.put(this.#buildUrl(url)).set(setHeader()).send(data).end(this.#resultHandler(resolve, reject));
        })
    }

    delete = (url) => {
        return new Promise((resolve, reject) => {
            request.delete(this.#buildUrl(url)).set(setHeader()).end(this.#resultHandler(resolve, reject));
        })
    }
}

function factory (app, opts) {
    if (opts.pssaRequest) {
        try {
            for (let r of opts.pssaRequest) {
                if (r.name && r.root) {
                    app.fs[r.name] = new paasRequest(r.root)
                } else {
                    throw 'opts.pssaRequest 参数错误！'
                }
            }
        } catch (error) {
            console.error(error)
            process.exit(-1);
        }
    }
}

module.exports = factory;