'use strict';

// -------------------------------------------
//  This file just describes the interface
//
//  New backends can start from here
// -------------------------------------------

exports = module.exports = {
    upsert: upsert,
    get: get,
    del: del,
    waitForDns: require('./waitfordns.js'),
    verifyDnsConfig: verifyDnsConfig
};

var assert = require('assert'),
    SubdomainError = require('../subdomains.js').SubdomainError,
    util = require('util');

function upsert(dnsConfig, zoneName, subdomain, type, values, callback) {
    assert.strictEqual(typeof dnsConfig, 'object');
    assert.strictEqual(typeof zoneName, 'string');
    assert.strictEqual(typeof subdomain, 'string');
    assert.strictEqual(typeof type, 'string');
    assert(util.isArray(values));
    assert.strictEqual(typeof callback, 'function');

    // Result: backend specific change id, to be passed into getChangeStatus()

    callback(new Error('not implemented'));
}

function get(dnsConfig, zoneName, subdomain, type, callback) {
    assert.strictEqual(typeof dnsConfig, 'object');
    assert.strictEqual(typeof zoneName, 'string');
    assert.strictEqual(typeof subdomain, 'string');
    assert.strictEqual(typeof type, 'string');
    assert.strictEqual(typeof callback, 'function');

    // Result: Array of matching DNS records in string format

    callback(new Error('not implemented'));
}

function del(dnsConfig, zoneName, subdomain, type, values, callback) {
    assert.strictEqual(typeof dnsConfig, 'object');
    assert.strictEqual(typeof zoneName, 'string');
    assert.strictEqual(typeof subdomain, 'string');
    assert.strictEqual(typeof type, 'string');
    assert(util.isArray(values));
    assert.strictEqual(typeof callback, 'function');

    // Result: none

    callback(new Error('not implemented'));
}

function verifyDnsConfig(dnsConfig, domain, ip, callback) {
    assert.strictEqual(typeof dnsConfig, 'object');
    assert.strictEqual(typeof domain, 'string');
    assert.strictEqual(typeof ip, 'string');
    assert.strictEqual(typeof callback, 'function');

    // Result: dnsConfig object

    callback(new Error('not implemented'));
}