'use strict';

exports = module.exports = {
    get
};

const assert = require('assert'),
    BoxError = require('./boxerror.js'),
    domains = require('./domains.js'),
    ejs = require('ejs'),
    fs = require('fs'),
    mail = require('./mail.js'),
    settings = require('./settings.js');

const MAIL_AUTOCONFIG_EJS = fs.readFileSync(__dirname + '/autoconfig.xml.ejs', { encoding: 'utf8' });

function get(domain, location, callback) {
    assert.strictEqual(typeof domain, 'string');
    assert.strictEqual(typeof location, 'string');
    assert.strictEqual(typeof callback, 'function');

    if (location === 'autoconfig/mail/config-v1.1.xml') { // this also gets a ?emailaddress
        mail.getDomain(domain, function (error, mailDomain) {
            if (error) return callback(new BoxError(BoxError.NOT_FOUND, error.message));
            if (!mailDomain.enabled) return callback(new BoxError(BoxError.NOT_FOUND, 'Email not enabled'));

            const autoconfig = ejs.render(MAIL_AUTOCONFIG_EJS, { domain, mailFqdn: settings.mailFqdn() });

            callback(null, { type: 'text/xml', body: autoconfig });
        });
    } else if (location === 'host-meta' || location === 'matrix/server') {
        const type = location === 'host-meta' ? 'text/xml' : 'application/json';

        domains.get(domain, function (error, domainObject) {
            if (error) return callback(error);
            if (!domainObject.wellKnown || !(location in domainObject.wellKnown)) return callback(new BoxError(BoxError.NOT_FOUND, 'No custom well-known config'));

            callback(null, { type, body: domainObject.wellKnown[location] });
        });
    } else {
        callback(new BoxError(BoxError.NOT_FOUND, 'No custom well-known config'));
    }
}