'use strict';

(function(){

angular
  .module('bitcoincom.services')
  .factory('shapeshiftService', shapeshiftService);
  
  function shapeshiftService(shapeshiftApiService) {

    var service = {
      // Variables
      coinIn: '',
      coinOut: '',
      withdrawalAddress: '',
      returnAddress: '',
      amount: '',
      marketData: {},
      coins: {
        'BTC': {name: 'Bitcoin', symbol: 'BTC'},
        'BCH': {name: 'Bitcoin Cash', symbol: 'BCH'}
      },

      // Functions
      getMarketData: getMarketData,
      shiftIt: shiftIt
    };

    return service;

    function getMarketData(coinIn, coinOut, cb) {
      service.coinIn = coinIn;
      service.coinOut = coinOut;
      shapeshiftApiService
        .marketInfo(service.coinIn, service.coinOut)
        .then(function (marketData) {
          service.marketData = marketData;
          service.rateString = service.marketData.rate.toString() + ' ' + coinOut.toUpperCase() + '/' + coinIn.toUpperCase();
          if (cb) {
            cb(marketData);
          }
        });
    }

    function shiftIt(coinIn, coinOut, withdrawalAddress, returnAddress, amount, cb) {
      // Test if the amount is correct depending on the min and max
      if (!amount || typeof amount !== 'number' || amount < service.marketData.minimum || amount > service.marketData.maxLimit) {
        var err = new Error('Invalid amount');
        cb(err);
      } else {
        // Init service data
        service.withdrawalAddress = withdrawalAddress;
        service.returnAddress = returnAddress;
        service.coinIn = coinIn;
        service.coinOut = coinOut;
        service.amount = amount;

        // Check the address
        shapeshiftApiService.ValidateAddress(withdrawalAddress, coinOut).then(function onSuccess(data) {
          if (data && data.isvalid) {

            // Prepare the transaction shapeshift side
            shapeshiftApiService.NormalTx(service).then(function onResponse(data) {
              var txData = data;

              // If the content is not that it was expected, get back an error
              if (!txData || !txData.orderId || !txData.deposit) {
                cb(new Error('Invalid response'));
              } else {
                // Get back the data
                service.depositInfo = txData;
                var shapeshiftData = {
                  coinIn: coinIn,
                  coinOut: coinOut,
                  toWalletId: service.toWalletId,
                  minAmount: service.marketData.minimum,
                  maxAmount: service.marketData.maxLimit,
                  orderId: txData.orderId,
                  toAddress: txData.deposit
                };
                cb(null, shapeshiftData);
              }
            });
          } else {
            var err = new Error('Invalid address or coin');
            cb(err);
          }
        });
      }
    }
  }
})();