//      Copyright (c) 2012 Mathieu Turcotte
//      Licensed under the MIT license.

var Backoff = require('./lib/backoff');
var ExponentialBackoffStrategy = require('./lib/strategy/exponential');
var FibonacciBackoffStrategy = require('./lib/strategy/fibonacci');
var FunctionCall = require('./lib/function_call.js');

module.exports.Backoff = Backoff;
module.exports.FunctionCall = FunctionCall;
module.exports.FibonacciStrategy = FibonacciBackoffStrategy;
module.exports.ExponentialStrategy = ExponentialBackoffStrategy;

// Constructs a Fibonacci backoff.
module.exports.fibonacci = function(options) {
    return new Backoff(new FibonacciBackoffStrategy(options));
};

// Constructs an exponential backoff.
module.exports.exponential = function(options) {
    return new Backoff(new ExponentialBackoffStrategy(options));
};

// Constructs a FunctionCall for the given function and arguments.
module.exports.call = function(fn, vargs, callback) {
    var args = Array.prototype.slice.call(arguments);
    fn = args[0];
    vargs = args.slice(1, args.length - 1);
    callback = args[args.length - 1];
    return new FunctionCall(fn, vargs, callback);
};