angular.module('BitNZ', []).factory('Api', ['$http', '$log', function ($http, $log) {
  'use strict';
  var api = {};
  var host = 'https://bitnz.com/api/0';

  var config = {
    username: '',
    key: '',
    secret: ''
  };
  
  var sign = function(parameters){
    parameters = parameters || {};
    var d = new Date();
    parameters.nonce = d.getTime() + ''+ d.getMilliseconds();
    parameters.key = config.key;
    parameters.signature = CryptoJS.algo.HMAC
                                .create(CryptoJS.algo.SHA256, config.secret)
                                .update(parameters.nonce + config.username + config.key)
                                .finalize()
                                .toString(CryptoJS.enc.Hex)
                                .toUpperCase();
    return parameters;
  };

  var serialize = function(parameters) {
    var params = [];
    Object.keys(parameters).forEach(function(key){
      this.push(key + '=' + parameters[key]);
    }, params);
    return params.join('&');
  };

  var request = function(method, action, parameters){
    var config = {
      method: method,
      url: host + action,
      data: serialize(parameters),
      headers: {}
    };
    if (method === 'GET') {
      config.params = serialize(parameters);
    }
    if (method === 'POST') {
      config.headers['Content-Type'] = 'application/x-www-form-urlencoded';
    }
    return $http(config);
  };
 
  var get = function(action, parameters){
      return request('GET', action, parameters);
  };

  var post = function(action, parameters){
    return request('POST', '/private' + action, sign(parameters));
  };

  // Save keys:
  api.authorize = function(username, key, secret){
    if (username.key !== undefined) {
      key = username.key;
      secret = username.secret;
      username = username.username;
    }
    config = {
      username: username,
      key: key,
      secret: secret
    };
  };

  api.sign = sign;

  // Open/Public API Calls:
  api.ticker = function(){
    return get('/ticker', {});
  };

  api.trades = function(lastTrade, fromDate) {
    return get('/trades', {
      'since': lastTrade || 0,
      'since_date': fromDate || 0
    });
  };

  api.chart = function(fromDate, width, height, background) {
    return host + '/trades_chart?' + serialize({
      'since_date': fromDate || 0,
      'width': width || 600,
      'height': height || 400,
      'bgcolor': background || ''
    });
  };

  api.orderbook = function() {
    return get('/orderbook', {});
  };

  // Private API Calls:

  api.balance = function() {
    return post('/balance', {});
  };

  api.orders_buy_open = function() {
    return post('/orders/buy/open', {});
  };

  api.orders_sell_open = function() {
    return post('/orders/sell/open', {});
  };

  api.orders_buy_closed = function(offset, limit) {
    return post('/orders/buy/closed', {
      offset: offset || 0,
      limit: limit || 0
    });
  };

  api.orders_sell_closed = function(offset, limit) {
    return post('/orders/sell/closed', {
      offset: offset || 0,
      limit: limit || 0
    });
  };

  api.orders_buy_cancel = function(id) {
    return post('/orders/buy/cancel', {
      id: id
    });
  };

  api.orders_sell_cancel = function(id) {
    return post('/orders/sell/cancel', {
      id: id
    });
  };

  api.orders_buy_create = function(amount, price) {
    return post('/orders/buy/create', {
      amount: amount,
      price: price
    });
  };

  api.orders_sell_create = function(amount, price) {
    return post('/orders/sell/create', {
      amount: amount,
      price: price
    });
  };

  api.btc_deposit_address = function() {
    return post('/btc/address', {});
  };

  api.btc_withdraw = function(address, amount) {
    return post('/btc/withdraw', {
      address: address,
      amount: amount
    });
  };

  return api;
}]);

 var app = angular.module('Play', ['BitNZ']);
app.controller('Example', ['$scope', '$log', 'Api', function($scope, $log, bitnz){
  
  $log.log('bitNZ', bitnz);

  $scope.config = {
    username: '',
    key: '',
    secret: ''
  };

  $scope.results = [];

  $scope.Authorize = function(){
    bitnz.authorize($scope.config);
  };

  $scope.GetTicker = function(){
    if (!bitnz) {
      $log.log('Uh oh!');
      return;
    }
    bitnz.ticker().success(function(data, status){
      $log.log('ticker', data, status);
    });
  };

  $scope.GetChart = function() {
    $scope.imageUrl = bitnz.chart();
    return $scope.imageUrl;
  };

  $scope.OrderBook = function(){
    bitnz.orderbook().success(function(data) {
      $log.log('orderbook', data);
    });
  };

  $scope.Balance = function(){
    bitnz.balance().success(function(data) {
      $log.log('balance', data);
    }).error(function(){
      $log.log('error', arguments);
    });
  };

  

}]);

<!DOCTYPE html>
<html>
    <head>
        <script src="http://crypto-js.googlecode.com/svn/tags/3.1.2/build/rollups/hmac-sha256.js"></script>
        <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.0-beta.17/angular.min.js"></script>
        <script src="BitNZService.js"></script>
        <script src="PlayApp.js"></script>

    </head>
    <body ng-app="Play">
        <div ng-controller="Example">
            <div>
                <input ng-model="config.username" placeholder="Username" />
                <input ng-model="config.key" placeholder="Key" />
                <input ng-model="config.secret" placeholder="Secret" />
                <button ng-click="Authorize()">Authorize</button>
            </div>

            <button ng-click="GetTicker()">Ticker</button>
            <button ng-click="OrderBook()">OrderBook</button>
            <button ng-click="Balance()">Balance</button>
            

            <pre style="margin-top: 50px; border: solid 1px; background: #f1f1f1; padding: 10px;">
                Config: {{ config }}
            </pre>

            <img ng-src="{{ GetChart() }}" alt="trade chart" />
        </div>
    </body>
</html>