'use strict';

exports = module.exports = {
    getServerIp,
    testConfig
};

const assert = require('assert'),
    BoxError = require('../boxerror.js'),
    debug = require('debug')('box:sysinfo/generic'),
    promiseRetry = require('../promise-retry.js'),
    safe = require('safetydance'),
    superagent = require('superagent');

async function getServerIp(config) {
    assert.strictEqual(typeof config, 'object');

    if (process.env.BOX_ENV === 'test') return '127.0.0.1';

    let attempt = 0;

    return await promiseRetry({ times: 10, interval: 5000 }, async () => {
        if (attempt) debug(`getServerIp: getting server IP. attempt ${attempt}`);
        ++attempt;

        const [networkError, response] = await safe(superagent.get('https://api.cloudron.io/api/v1/helper/public_ip')
            .timeout(30 * 1000)
            .ok(() => true));

        if (networkError || response.status !== 200) {
            debug('Error getting IP', networkError);
            throw new BoxError(BoxError.EXTERNAL_ERROR, 'Unable to detect IP. API server unreachable');
        }

        if (!response.body && !response.body.ip) {
            debug('Unexpected answer. No "ip" found in response body.', response.body);
            throw new BoxError(BoxError.EXTERNAL_ERROR, 'Unable to detect IP. No IP found in response');
        }

        return response.body.ip;
    });
}

async function testConfig(config) {
    assert.strictEqual(typeof config, 'object');

    return null;
}