'use strict';

var chai = require('chai');
var sinon = require('sinon');
var request = require('request');
var http = require('http');
var should = chai.should();
var proxyquire = require('proxyquire');
var config = require('../config.js');

var Common = require('../lib/common');
var Defaults = Common.Defaults;



describe('ExpressApp', function() {
  describe('#constructor', function() {
    it('will set an express app', function() {
      var TestExpressApp = proxyquire('../lib/expressapp', {});
      var express = new TestExpressApp();
      should.exist(express.app);
      should.exist(express.app.use);
      should.exist(express.app.enable);
    });
  });
  describe('#start', function() {
    it('will listen at the specified port', function(done) {
      var initialize = sinon.stub().callsArg(1);
      var TestExpressApp = proxyquire('../lib/expressapp', {
        './server': {
          initialize: initialize
        }
      });
      var app = new TestExpressApp();
      var options = {};
      app.start(config, function(err) {
        should.not.exist(err);
        initialize.callCount.should.equal(1);
        done();
      });
    });

    describe('Routes', function() {
      var testPort = 3239;
      var testHost = 'http://127.0.0.1';
      var httpServer;

      function start(ExpressApp, done) {
        var app = new ExpressApp();
        httpServer = http.Server(app.app);

        app.start(config, function(err) {
          should.not.exist(err);
          httpServer.listen(testPort);
          done();
        });
      };

      afterEach(function() {
        httpServer.close();
      });

      it('/v2/wallets', function(done) {
        var server = {
          getStatus: sinon.stub().callsArgWith(1, null, {}),
        };
        var TestExpressApp = proxyquire('../lib/expressapp', {
          './server': {
            initialize: sinon.stub().callsArg(1),
            getInstanceWithAuth: sinon.stub().callsArgWith(1, null, server),
          }
        });
        start(TestExpressApp, function() {
          var requestOptions = {
            url: testHost + ':' + testPort + config.basePath + '/v2/wallets',
            headers: {
              'x-identity': 'identity',
              'x-signature': 'signature'
            }
          };
          request(requestOptions, function(err, res, body) {
            should.not.exist(err);
            should.exist(res.headers['x-service-version']);
            res.headers['x-service-version'].should.equal('bws-' + require('../package').version);
            res.statusCode.should.equal(200);
            body.should.equal('{}');
            done();
          });
        });
      });

      it('/v1/addresses', function(done) {
        var server = {
          getMainAddresses: sinon.stub().callsArgWith(1, null, {}),
        };
        var TestExpressApp = proxyquire('../lib/expressapp', {
          './server': {
            initialize: sinon.stub().callsArg(1),
            getInstanceWithAuth: sinon.stub().callsArgWith(1, null, server),
          }
        });
        start(TestExpressApp, function() {
          var requestOptions = {
            url: testHost + ':' + testPort + config.basePath + '/v1/addresses?limit=4&reverse=1',
            headers: {
              'x-identity': 'identity',
              'x-signature': 'signature'
            }
          };
          request(requestOptions, function(err, res, body) {
            should.not.exist(err);
            res.statusCode.should.equal(200);
            var args = server.getMainAddresses.getCalls()[0].args[0];
            args.limit.should.equal(4);
            args.reverse.should.be.true;
            done();
          });
        });
      });

      it('/v1/sendmaxinfo', function(done) {
        var server = {
          getSendMaxInfo: sinon.stub().callsArgWith(1, null, {
            amount: 123
          }),
        };
        var TestExpressApp = proxyquire('../lib/expressapp', {
          './server': {
            initialize: sinon.stub().callsArg(1),
            getInstanceWithAuth: sinon.stub().callsArgWith(1, null, server),
          }
        });
        start(TestExpressApp, function() {
          var requestOptions = {
            url: testHost + ':' + testPort + config.basePath + '/v1/sendmaxinfo?feePerKb=10000&returnInputs=1',
            headers: {
              'x-identity': 'identity',
              'x-signature': 'signature'
            }
          };
          request(requestOptions, function(err, res, body) {
            should.not.exist(err);
            res.statusCode.should.equal(200);
            var args = server.getSendMaxInfo.getCalls()[0].args[0];
            args.feePerKb.should.equal(10000);
            args.returnInputs.should.be.true;
            JSON.parse(body).amount.should.equal(123);
            done();
          });
        });
      });

      describe('Balance', function() {
        it('should handle cache argument', function(done) {
          var server = {
            getBalance: sinon.stub().callsArgWith(1, null, {}),
          };
          var TestExpressApp = proxyquire('../lib/expressapp', {
            './server': {
              initialize: sinon.stub().callsArg(1),
              getInstanceWithAuth: sinon.stub().callsArgWith(1, null, server),
            }
          });
          start(TestExpressApp, function() {
            var reqOpts = {
              url: testHost + ':' + testPort + config.basePath + '/v1/balance',
              headers: {
                'x-identity': 'identity',
                'x-signature': 'signature'
              }
            };
            request(reqOpts, function(err, res, body) {
              should.not.exist(err);
              res.statusCode.should.equal(200);
              var args = server.getBalance.getCalls()[0].args[0];
              should.not.exist(args.twoStep);

              reqOpts.url += '?twoStep=1';
              request(reqOpts, function(err, res, body) {
                should.not.exist(err);
                res.statusCode.should.equal(200);
                var args = server.getBalance.getCalls()[1].args[0];
                args.twoStep.should.equal(true);
                done();
              });
            });
          });
        });
      });

      describe('/v1/notifications', function(done) {
        var server, TestExpressApp, clock;
        beforeEach(function() {
          clock = sinon.useFakeTimers(2000000000, 'Date');

          server = {
            getNotifications: sinon.stub().callsArgWith(1, null, {})
          };
          TestExpressApp = proxyquire('../lib/expressapp', {
            './server': {
              initialize: sinon.stub().callsArg(1),
              getInstanceWithAuth: sinon.stub().callsArgWith(1, null, server),
            }
          });
        });
        afterEach(function() {
          clock.restore();
        });

        it('should fetch notifications from a specified id', function(done) {
          start(TestExpressApp, function() {
            var requestOptions = {
              url: testHost + ':' + testPort + config.basePath + '/v1/notifications' + '?notificationId=123',
              headers: {
                'x-identity': 'identity',
                'x-signature': 'signature'
              }
            };
            request(requestOptions, function(err, res, body) {
              should.not.exist(err);
              res.statusCode.should.equal(200);
              body.should.equal('{}');
              server.getNotifications.calledWith({
                notificationId: '123',
                minTs: +Date.now() - Defaults.NOTIFICATIONS_TIMESPAN * 1000,
              }).should.be.true;
              done();
            });
          });
        });
        it('should allow custom minTs within limits', function(done) {
          start(TestExpressApp, function() {
            var requestOptions = {
              url: testHost + ':' + testPort + config.basePath + '/v1/notifications' + '?timeSpan=30',
              headers: {
                'x-identity': 'identity',
                'x-signature': 'signature'
              }
            };
            request(requestOptions, function(err, res, body) {
              should.not.exist(err);
              res.statusCode.should.equal(200);
              server.getNotifications.calledWith({
                notificationId: undefined,
                minTs: +Date.now() - 30000,
              }).should.be.true;
              done();
            });
          });
        });
        it('should limit minTs to Defaults.MAX_NOTIFICATIONS_TIMESPAN', function(done) {
          start(TestExpressApp, function() {
            var overLimit  = Defaults.MAX_NOTIFICATIONS_TIMESPAN * 2;
            var requestOptions = {
              url: testHost + ':' + testPort + config.basePath + '/v1/notifications' + '?timeSpan=' + overLimit ,
              headers: {
                'x-identity': 'identity',
                'x-signature': 'signature'
              }
            };
            request(requestOptions, function(err, res, body) {
              should.not.exist(err);
              res.statusCode.should.equal(200);
              body.should.equal('{}');

              server.getNotifications.calledWith({
                notificationId: undefined,
                minTs: Date.now() - Defaults.MAX_NOTIFICATIONS_TIMESPAN * 1000, // override minTs argument
              }).should.be.true;
              done();
            });
          });
        });
      });
    });
  });
});