'use strict';

angular.module('copayApp.controllers').controller('buyAmazonController',
  function($rootScope, $scope, $ionicModal, $log, $timeout, $state, lodash, profileService, bwcError, configService, walletService, fingerprintService, amazonService, ongoingProcess) {

    var self = this;
    var client;

    var handleEncryptedWallet = function(client, cb) {
      if (!walletService.isEncrypted(client)) return cb();
      $rootScope.$emit('Local/NeedsPassword', false, function(err, password) {
        if (err) return cb(err);
        return cb(walletService.unlock(client, password));
      });
    };

    this.init = function() {
      var network = configService.getSync().amazon.testnet ? 'testnet' : 'livenet';
      amazonService.setCredentials(network);
      self.allWallets = profileService.getWallets(network, 1);
      client = profileService.focusedClient;
      if (client && client.credentials.m == 1 && client.credentials.network == network) {
        $timeout(function() {
          self.selectedWalletId = client.credentials.walletId;
          self.selectedWalletName = client.credentials.walletName;
          $scope.$apply();
        }, 100);
      }
    };

    $scope.openWalletsModal = function(wallets) {
      self.error = null;

      $scope.type = 'SELL';
      $scope.wallets = wallets;
      $scope.self = self;

      $ionicModal.fromTemplateUrl('views/modals/wallets.html', {
        scope: $scope,
        animation: 'slide-in-up'
      }).then(function(modal) {
        $scope.walletsModal = modal;
        $scope.walletsModal.show();
      });

      $scope.$on('walletSelected', function(ev, walletId) {
        $timeout(function() {
          client = profileService.getClient(walletId);
          self.selectedWalletId = walletId;
          self.selectedWalletName = client.credentials.walletName;
          $scope.$apply();
        }, 100);
        $scope.walletsModal.hide();
      });
    };

    this.createTx = function() {
      self.error = null;
      self.errorInfo = null;

      var currency_code = configService.getSync().amazon.testnet ? window.amazon_sandbox_currency_code : window.amazon_currency_code;
      var dataSrc = {
        currency: currency_code,
        amount: $scope.fiat
      };
      var outputs = [];
      var config = configService.getSync();
      var configWallet = config.wallet;
      var walletSettings = configWallet.settings;


      ongoingProcess.set('Processing Transaction...', true);
      $timeout(function() {
        amazonService.createBitPayInvoice(dataSrc, function(err, dataInvoice) {
          if (err) {
            ongoingProcess.set('Processing Transaction...', false);
            self.error = bwcError.msg(err);
            $timeout(function() {
              $scope.$digest();
            });
            return;
          }

          amazonService.getBitPayInvoice(dataInvoice.invoiceId, function(err, invoice) {
            if (err) {
              ongoingProcess.set('Processing Transaction...', false);
              self.error = bwcError.msg(err);
              $timeout(function() {
                $scope.$digest();
              });
              return;
            }

            var address, comment, amount;

            address = invoice.bitcoinAddress;
            amount = parseInt((invoice.btcPrice * 100000000).toFixed(0));
            comment = 'Amazon.com Gift Card';

            outputs.push({
              'toAddress': address,
              'amount': amount,
              'message': comment
            });

            var txp = {
              toAddress: address,
              amount: amount,
              outputs: outputs,
              message: comment,
              payProUrl: null,
              excludeUnconfirmedUtxos: configWallet.spendUnconfirmed ? false : true,
              feeLevel: walletSettings.feeLevel || 'normal'
            };

            walletService.createTx(client, txp, function(err, createdTxp) {
              ongoingProcess.set('Processing Transaction...', false);
              if (err) {
                self.error = bwcError.msg(err);
                $timeout(function() {
                  $scope.$digest();
                });
                return;
              }
              $scope.$emit('Local/NeedsConfirmation', createdTxp, function(accept) {
                if (accept) {
                  self.confirmTx(createdTxp, function(err, tx) {
                    if (err) {
                      ongoingProcess.set('Processing Transaction...', false);
                      self.error = bwcError.msg(err);
                      $timeout(function() {
                        $scope.$digest();
                      });
                      return;
                    }
                    var count = 0;
                    ongoingProcess.set('Processing Transaction...', true);

                    dataSrc.accessKey = dataInvoice.accessKey;
                    dataSrc.invoiceId = invoice.id;
                    dataSrc.invoiceUrl = invoice.url;
                    dataSrc.invoiceTime = invoice.invoiceTime;

                    self.debounceCreate(count, dataSrc);
                  });
                }
              });
            });
          });
        });
      }, 100);
    };

    self.debounceCreate = lodash.throttle(function(count, dataSrc) {
      self.debounceCreateGiftCard(count, dataSrc);
    }, 8000, {
      'leading': true
    });

    self.debounceCreateGiftCard = function(count, dataSrc) {

      amazonService.createGiftCard(dataSrc, function(err, giftCard) {
        $log.debug("creating gift card " + count);
        if (err) {
          ongoingProcess.set('Processing Transaction...', false);
          self.error = bwcError.msg(err);
          self.errorInfo = dataSrc;
          $timeout(function() {
            $scope.$digest();
          });
          return;
        }
        if (giftCard.status == 'PENDING' && count < 3) {
          $log.debug("pending gift card not available yet");
          self.debounceCreate(count + 1, dataSrc, dataSrc);
          return;
        }

        var now = moment().unix();

        var newData = giftCard;
        newData['invoiceId'] = dataSrc.invoiceId;
        newData['accessKey'] = dataSrc.accessKey;
        newData['invoiceUrl'] = dataSrc.invoiceUrl;
        newData['amount'] = dataSrc.amount;
        newData['date'] = dataSrc.invoiceTime || now;

        if (newData.status == 'expired') {
          amazonService.savePendingGiftCard(newData, {
            remove: true
          }, function(err) {
            return;
          });
        }

        amazonService.savePendingGiftCard(newData, null, function(err) {
          ongoingProcess.set('Processing Transaction...', false);
          $log.debug("Saving new gift card with status: " + newData.status);

          self.giftCard = newData;
          if (newData.status == 'PENDING') $state.transitionTo('amazon');
          $timeout(function() {
            $scope.$digest();
          });
        });
      });
    }

    this.confirmTx = function(txp, cb) {

      fingerprintService.check(client, function(err) {
        if (err) {
          $log.debug(err);
          return cb(err);
        }

        handleEncryptedWallet(client, function(err) {
          if (err) {
            $log.debug(err);
            return bwcError.cb(err, null, cb);
          }

          ongoingProcess.set('Processing Transaction...', true);
          walletService.publishTx(client, txp, function(err, publishedTxp) {
            if (err) {
              $log.debug(err);
              return bwcError.cb(err, null, cb);
            }

            walletService.signTx(client, publishedTxp, function(err, signedTxp) {
              walletService.lock(client);
              if (err) {
                $log.debug(err);
                walletService.removeTx(client, signedTxp, function(err) {
                  if (err) $log.debug(err);
                });
                return bwcError.cb(err, null, cb);
              }

              walletService.broadcastTx(client, signedTxp, function(err, broadcastedTxp) {
                if (err) {
                  $log.debug(err);
                  walletService.removeTx(client, broadcastedTxp, function(err) {
                    if (err) $log.debug(err);
                  });
                  return bwcError.cb(err, null, cb);
                }
                $timeout(function() {
                  return cb(null, broadcastedTxp);
                }, 5000);
              });
            });
          });
        });
      });
    };

  });