var loopback = require('../');
var lt = require('loopback-testing');
var path = require('path');
var SIMPLE_APP = path.join(__dirname, 'fixtures', 'simple-integration-app');
var app = require(path.join(SIMPLE_APP, 'server/server.js'));
var assert = require('assert');

describe('remoting - integration', function() {

  lt.beforeEach.withApp(app);
  lt.beforeEach.givenModel('store');

  afterEach(function(done) {
    this.app.models.store.destroyAll(done);
  });

  describe('app.remotes.options', function() {
    it('should load remoting options', function() {
      var remotes = app.remotes();
      assert.deepEqual(remotes.options, {'json': {'limit': '1kb', 'strict': false},
        'urlencoded': {'limit': '8kb', 'extended': true}});
    });

    it('rest handler', function() {
      var handler = app.handler('rest');
      assert(handler);
    });

    it('should accept request that has entity below 1kb', function(done) {
      // Build an object that is smaller than 1kb
      var name = '';
      for (var i = 0; i < 256; i++) {
        name += '11';
      }
      this.http = this.post('/api/stores');
      this.http.send({
        'name': name
      });
      this.http.end(function(err) {
        if (err) return done(err);
        this.req = this.http.req;
        this.res = this.http.res;
        assert.equal(this.res.statusCode, 200);
        done();
      }.bind(this));
    });

    it('should reject request that has entity beyond 1kb', function(done) {
      // Build an object that is larger than 1kb
      var name = '';
      for (var i = 0; i < 2048; i++) {
        name += '11111111111';
      }
      this.http = this.post('/api/stores');
      this.http.send({
        'name': name
      });
      this.http.end(function(err) {
        if (err) return done(err);
        this.req = this.http.req;
        this.res = this.http.res;
        // Request is rejected with 413
        assert.equal(this.res.statusCode, 413);
        done();
      }.bind(this));
    });
  });

  describe('Model shared classes', function() {
    function formatReturns(m) {
      var returns = m.returns;
      if (!returns || returns.length === 0) {
        return '';
      }
      var type = returns[0].type;
      return type ? ':' + type : '';
    }

    function formatMethod(m) {
      return [
        m.name,
        '(',
        m.accepts.map(function(a) {
          return a.arg + ':' + a.type;
        }).join(','),
        ')',
        formatReturns(m),
        ' ',
        m.getHttpMethod(),
        ' ',
        m.getFullPath()
      ].join('');
    }

    function findClass(name) {
      return app.handler('rest').adapter
        .getClasses()
        .filter(function(c) {
          return c.name === name;
        })[0];
    }

    it('has expected remote methods', function() {
      var storeClass = findClass('store');
      var methods = storeClass.methods
        .filter(function(m) {
          return m.name.indexOf('__') === -1;
        })
        .map(function(m) {
          return formatMethod(m);
        });

      var expectedMethods = [
        'create(data:object):store POST /stores',
        'upsert(data:object):store PUT /stores',
        'exists(id:any):boolean GET /stores/:id/exists',
        'findById(id:any,filter:object):store GET /stores/:id',
        'find(filter:object):store GET /stores',
        'findOne(filter:object):store GET /stores/findOne',
        'updateAll(where:object,data:object):object POST /stores/update',
        'deleteById(id:any):object DELETE /stores/:id',
        'count(where:object):number GET /stores/count',
        'prototype.updateAttributes(data:object):store PUT /stores/:id',
        'createChangeStream(options:object):ReadableStream POST /stores/change-stream'
      ];

      // The list of methods is from docs:
      // https://docs.strongloop.com/display/public/LB/Exposing+models+over+REST
      expect(methods).to.include.members(expectedMethods);
    });

    it('has expected remote methods for scopes', function() {
      var storeClass = findClass('store');
      var methods = storeClass.methods
        .filter(function(m) {
          return m.name.indexOf('__') === 0;
        })
        .map(function(m) {
          return formatMethod(m);
        });

      var expectedMethods = [
        '__get__superStores(filter:object):store GET /stores/superStores',
        '__create__superStores(data:store):store POST /stores/superStores',
        '__delete__superStores() DELETE /stores/superStores',
        '__count__superStores(where:object):number GET /stores/superStores/count'
      ];

      expect(methods).to.include.members(expectedMethods);
    });

    it('should have correct signatures for belongsTo methods',
      function() {

        var widgetClass = findClass('widget');
        var methods = widgetClass.methods
          .filter(function(m) {
            return m.name.indexOf('prototype.__') === 0;
          })
          .map(function(m) {
            return formatMethod(m);
          });

        var expectedMethods = [
            'prototype.__get__store(refresh:boolean):store ' +
            'GET /widgets/:id/store'
        ];
        expect(methods).to.include.members(expectedMethods);
      });

    it('should have correct signatures for hasMany methods',
      function() {

        var physicianClass = findClass('store');
        var methods = physicianClass.methods
          .filter(function(m) {
            return m.name.indexOf('prototype.__') === 0;
          })
          .map(function(m) {
            return formatMethod(m);
          });

        var expectedMethods = [
              'prototype.__findById__widgets(fk:any):widget ' +
              'GET /stores/:id/widgets/:fk',
              'prototype.__destroyById__widgets(fk:any) ' +
              'DELETE /stores/:id/widgets/:fk',
              'prototype.__updateById__widgets(fk:any,data:widget):widget ' +
              'PUT /stores/:id/widgets/:fk',
              'prototype.__get__widgets(filter:object):widget ' +
              'GET /stores/:id/widgets',
              'prototype.__create__widgets(data:widget):widget ' +
              'POST /stores/:id/widgets',
              'prototype.__delete__widgets() ' +
              'DELETE /stores/:id/widgets',
              'prototype.__count__widgets(where:object):number ' +
              'GET /stores/:id/widgets/count'
        ];
        expect(methods).to.include.members(expectedMethods);
      });

    it('should have correct signatures for hasMany-through methods',
      function() { // jscs:disable validateIndentation

      var physicianClass = findClass('physician');
      var methods = physicianClass.methods
        .filter(function(m) {
          return m.name.indexOf('prototype.__') === 0;
        })
        .map(function(m) {
          return formatMethod(m);
        });

      var expectedMethods = [
          'prototype.__findById__patients(fk:any):patient ' +
          'GET /physicians/:id/patients/:fk',
          'prototype.__destroyById__patients(fk:any) ' +
          'DELETE /physicians/:id/patients/:fk',
          'prototype.__updateById__patients(fk:any,data:patient):patient ' +
          'PUT /physicians/:id/patients/:fk',
          'prototype.__link__patients(fk:any,data:appointment):appointment ' +
          'PUT /physicians/:id/patients/rel/:fk',
          'prototype.__unlink__patients(fk:any) ' +
          'DELETE /physicians/:id/patients/rel/:fk',
          'prototype.__exists__patients(fk:any):boolean ' +
          'HEAD /physicians/:id/patients/rel/:fk',
          'prototype.__get__patients(filter:object):patient ' +
          'GET /physicians/:id/patients',
          'prototype.__create__patients(data:patient):patient ' +
          'POST /physicians/:id/patients',
          'prototype.__delete__patients() ' +
          'DELETE /physicians/:id/patients',
          'prototype.__count__patients(where:object):number ' +
          'GET /physicians/:id/patients/count'
      ];
      expect(methods).to.include.members(expectedMethods);
    });
  });

});