'use strict';

angular.module('copayApp.controllers').controller('bitpayCardController', function($scope, $timeout, $log, $state, lodash, bitpayCardService, moment, popupService, gettextCatalog, $ionicHistory) {

  var self = this;
  var runningBalance;
  $scope.dateRange = { value: 'last30Days'};
  $scope.network = bitpayCardService.getEnvironment();

  var updateHistoryFromCache = function(cb) {
    bitpayCardService.getBitpayDebitCardsHistory($scope.cardId, function(err, data) {
      if (err || lodash.isEmpty(data)) return cb();
      $scope.historyCached = true;
      self.bitpayCardTransactionHistory = data.transactions;
      self.bitpayCardCurrentBalance = data.balance;
      return cb();
    });
  };

  var setDateRange = function(preset) {
    var startDate, endDate;
    preset = preset || 'last30Days';
    switch(preset) {
      case 'last30Days':
        startDate = moment().subtract(30, 'days').toISOString();
        endDate = moment().toISOString();
        break;
      case 'lastMonth':
        startDate = moment().startOf('month').subtract(1, 'month').toISOString();
        endDate = moment().startOf('month').toISOString();
        break;
      case 'all':
        startDate = null;
        endDate = null;
        break;
      default:
        return;
    }
    return {
      startDate: startDate,
      endDate: endDate
    };
  };

  var setGetStarted = function(history, cb) {
    if (lodash.isEmpty(history.transactionList)) {
      var dateRange = setDateRange('all');
      bitpayCardService.getHistory($scope.cardId, dateRange, function(err, history) {
        if (lodash.isEmpty(history.transactionList)) return cb(true);
        return cb(false);
      });
    } else return cb(false);
  };

  this.update = function() {
    var dateRange = setDateRange($scope.dateRange.value);

    $scope.loadingHistory = true;
    bitpayCardService.getHistory($scope.cardId, dateRange, function(err, history) {
      $scope.loadingHistory = false;

      if (err) {
        $log.error(err);
        $scope.error = gettextCatalog.getString('Could not get transactions');
        return;
      }

      setGetStarted(history, function(getStarted) {
        self.getStarted = getStarted;

        var txs = lodash.clone(history.txs);
        runningBalance = parseFloat(history.endingBalance);
        for (var i = 0; i < txs.length; i++) {
          txs[i] = _getMerchantInfo(txs[i]);
          txs[i].icon = _getIconName(txs[i]);
          txs[i].desc = _processDescription(txs[i]);
          txs[i].price = _price(txs[i]);
          txs[i].runningBalance = runningBalance;
          _runningBalance(txs[i]);
        }
        self.bitpayCardTransactionHistory = txs;
        self.bitpayCardCurrentBalance = history.currentCardBalance;

        if ($scope.dateRange.value == 'last30Days') {
          $log.debug('BitPay Card: store cache history');
          var cacheHistory = {
            balance: history.currentCardBalance,
            transactions: history.txs
          };
          bitpayCardService.setBitpayDebitCardsHistory($scope.cardId, cacheHistory, {}, function(err) {
            if (err) $log.error(err);
            $scope.historyCached = true;
          });
        }
        $timeout(function() {
          $scope.$apply();
        });
      });
    });
  };

  var _getMerchantInfo = function(tx) {
    var bpTranCodes = bitpayCardService.bpTranCodes;
    lodash.keys(bpTranCodes).forEach(function(code) {
      if (tx.type.indexOf(code) === 0) {
        lodash.assign(tx, bpTranCodes[code]);
      }
    });
    return tx;
  };

  var _getIconName = function(tx) {
    var icon = tx.mcc || tx.category || null;
    if (!icon) return 'default';
    return bitpayCardService.iconMap[icon];
  };

  var _processDescription = function(tx) {
    if (lodash.isArray(tx.description)) {
      return tx.description[0];
    }
    return tx.description;
  };

  var _price = function(tx) {
    return parseFloat(tx.amount) + parseFloat(tx.fee)
  };

  var _runningBalance = function(tx) {
    runningBalance -= parseFloat(tx.amount);
  };

  $scope.$on("$ionicView.beforeEnter", function(event, data) {
    $scope.cardId = data.stateParams.id;
    if (!$scope.cardId) {
      var msg = gettextCatalog.getString('Bad param');
      $ionicHistory.nextViewOptions({
        disableAnimate: true
      });
      $state.go('tabs.home');
      popupService.showAlert(null, msg);
    } else {
      updateHistoryFromCache(function() {
        self.update();
      });
    }
  });

});