'use strict';
const Parse = require('parse/node');
const rp = require('request-promise');

const masterKeyHeaders = {
  'X-Parse-Application-Id': 'test',
  'X-Parse-Rest-API-Key': 'test',
  'X-Parse-Master-Key': 'test'
}

const masterKeyOptions = {
  headers: masterKeyHeaders,
  json: true
}

const PointerObject = Parse.Object.extend({
  className: "PointerObject"
});

const loadTestData = () => {
  const data1 = {score: 10, name: 'foo', sender: {group: 'A'}, views: 900, size: ['S', 'M']};
  const data2 = {score: 10, name: 'foo', sender: {group: 'A'}, views: 800, size: ['M', 'L']};
  const data3 = {score: 10, name: 'bar', sender: {group: 'B'}, views: 700, size: ['S']};
  const data4 = {score: 20, name: 'dpl', sender: {group: 'B'}, views: 700, size: ['S']};
  const obj1 = new TestObject(data1);
  const obj2 = new TestObject(data2);
  const obj3 = new TestObject(data3);
  const obj4 = new TestObject(data4);
  return Parse.Object.saveAll([obj1, obj2, obj3, obj4]);
}

describe('Parse.Query Aggregate testing', () => {
  beforeEach((done) => {
    loadTestData().then(done, done);
  });

  it('should only query aggregate with master key', (done) => {
    Parse._request('GET', `aggregate/someClass`, {})
      .then(() => {}, (error) => {
        expect(error.message).toEqual('unauthorized: master key is required');
        done();
      });
  });

  it('invalid query invalid key', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        unknown: {},
      }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .catch((error) => {
        expect(error.error.code).toEqual(Parse.Error.INVALID_QUERY);
        done();
      });
  });

  it('invalid query group _id', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        group: { _id: null },
      }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .catch((error) => {
        expect(error.error.code).toEqual(Parse.Error.INVALID_QUERY);
        done();
      });
  });

  it('invalid query group objectId required', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        group: {},
      }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .catch((error) => {
        expect(error.error.code).toEqual(Parse.Error.INVALID_QUERY);
        done();
      });
  });

  it('group by field', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        group: { objectId: '$name' },
      }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .then((resp) => {
        expect(resp.results.length).toBe(3);
        expect(resp.results[0].hasOwnProperty('objectId')).toBe(true);
        expect(resp.results[1].hasOwnProperty('objectId')).toBe(true);
        expect(resp.results[2].hasOwnProperty('objectId')).toBe(true);
        expect(resp.results[0].objectId).not.toBe(undefined);
        expect(resp.results[1].objectId).not.toBe(undefined);
        expect(resp.results[2].objectId).not.toBe(undefined);
        done();
      }).catch(done.fail);
  });

  it('group by pipeline operator', async () => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        pipeline: {
          group: { objectId: '$name' },
        }
      }
    });
    const resp = await rp.get(Parse.serverURL + '/aggregate/TestObject', options);
    expect(resp.results.length).toBe(3);
    expect(resp.results[0].hasOwnProperty('objectId')).toBe(true);
    expect(resp.results[1].hasOwnProperty('objectId')).toBe(true);
    expect(resp.results[2].hasOwnProperty('objectId')).toBe(true);
    expect(resp.results[0].objectId).not.toBe(undefined);
    expect(resp.results[1].objectId).not.toBe(undefined);
    expect(resp.results[2].objectId).not.toBe(undefined);
  });

  it('group by empty object', (done) => {
    const obj = new TestObject();
    const pipeline = [{
      group: { objectId: {} }
    }];
    obj.save().then(() => {
      const query = new Parse.Query(TestObject);
      return query.aggregate(pipeline);
    }).then((results) => {
      expect(results[0].objectId).toEqual(null);
      done();
    });
  });

  it('group by empty string', (done) => {
    const obj = new TestObject();
    const pipeline = [{
      group: { objectId: '' }
    }];
    obj.save().then(() => {
      const query = new Parse.Query(TestObject);
      return query.aggregate(pipeline);
    }).then((results) => {
      expect(results[0].objectId).toEqual(null);
      done();
    });
  });

  it('group by empty array', (done) => {
    const obj = new TestObject();
    const pipeline = [{
      group: { objectId: [] }
    }];
    obj.save().then(() => {
      const query = new Parse.Query(TestObject);
      return query.aggregate(pipeline);
    }).then((results) => {
      expect(results[0].objectId).toEqual(null);
      done();
    });
  });

  it('group by date object', (done) => {
    const obj1 = new TestObject();
    const obj2 = new TestObject();
    const obj3 = new TestObject();
    const pipeline = [{
      group: {
        objectId: { day: { $dayOfMonth: "$_updated_at" }, month: { $month: "$_created_at" }, year: { $year: "$_created_at" } },
        count: { $sum: 1 }
      }
    }];
    Parse.Object.saveAll([obj1, obj2, obj3]).then(() => {
      const query = new Parse.Query(TestObject);
      return query.aggregate(pipeline);
    }).then((results) => {
      const createdAt = new Date(obj1.createdAt);
      expect(results[0].objectId.day).toEqual(createdAt.getUTCDate());
      expect(results[0].objectId.month).toEqual(createdAt.getMonth() + 1);
      expect(results[0].objectId.year).toEqual(createdAt.getUTCFullYear());
      done();
    });
  });

  it('group by date object transform', (done) => {
    const obj1 = new TestObject();
    const obj2 = new TestObject();
    const obj3 = new TestObject();
    const pipeline = [{
      group: {
        objectId: { day: { $dayOfMonth: "$updatedAt" }, month: { $month: "$createdAt" }, year: { $year: "$createdAt" } },
        count: { $sum: 1 }
      }
    }];
    Parse.Object.saveAll([obj1, obj2, obj3]).then(() => {
      const query = new Parse.Query(TestObject);
      return query.aggregate(pipeline);
    }).then((results) => {
      const createdAt = new Date(obj1.createdAt);
      expect(results[0].objectId.day).toEqual(createdAt.getUTCDate());
      expect(results[0].objectId.month).toEqual(createdAt.getMonth() + 1);
      expect(results[0].objectId.year).toEqual(createdAt.getUTCFullYear());
      done();
    });
  });

  it_exclude_dbs(['postgres'])('group and multiply transform', (done) => {
    const obj1 = new TestObject({ name: 'item a', quantity: 2, price: 10 });
    const obj2 = new TestObject({ name: 'item b', quantity: 5, price: 5 });
    const pipeline = [{
      group: {
        objectId: null,
        total: { $sum: { $multiply: [ '$quantity', '$price' ] } }
      }
    }];
    Parse.Object.saveAll([obj1, obj2]).then(() => {
      const query = new Parse.Query(TestObject);
      return query.aggregate(pipeline);
    }).then((results) => {
      expect(results.length).toEqual(1);
      expect(results[0].total).toEqual(45);
      done();
    });
  });

  it_exclude_dbs(['postgres'])('project and multiply transform', (done) => {
    const obj1 = new TestObject({ name: 'item a', quantity: 2, price: 10 });
    const obj2 = new TestObject({ name: 'item b', quantity: 5, price: 5 });
    const pipeline = [
      {
        match: { quantity: { $exists: true } }
      },
      {
        project: {
          name: 1,
          total: { $multiply: [ '$quantity', '$price' ] }
        }
      }
    ];
    Parse.Object.saveAll([obj1, obj2]).then(() => {
      const query = new Parse.Query(TestObject);
      return query.aggregate(pipeline);
    }).then((results) => {
      expect(results.length).toEqual(2);
      if (results[0].name === 'item a') {
        expect(results[0].total).toEqual(20);
        expect(results[1].total).toEqual(25);
      }
      else {
        expect(results[0].total).toEqual(25);
        expect(results[1].total).toEqual(20);
      }
      done();
    });
  });

  it_exclude_dbs(['postgres'])('project without objectId transform', (done) => {
    const obj1 = new TestObject({ name: 'item a', quantity: 2, price: 10 });
    const obj2 = new TestObject({ name: 'item b', quantity: 5, price: 5 });
    const pipeline = [
      {
        match: { quantity: { $exists: true } }
      },
      {
        project: {
          objectId: 0,
          total: { $multiply: [ '$quantity', '$price' ] }
        }
      },
      {
        sort: { total: 1 }
      }
    ];
    Parse.Object.saveAll([obj1, obj2]).then(() => {
      const query = new Parse.Query(TestObject);
      return query.aggregate(pipeline);
    }).then((results) => {
      expect(results.length).toEqual(2);
      expect(results[0].total).toEqual(20);
      expect(results[0].objectId).toEqual(undefined);
      expect(results[1].total).toEqual(25);
      expect(results[1].objectId).toEqual(undefined);
      done();
    });
  });

  it_exclude_dbs(['postgres'])('project updatedAt only transform', (done) => {
    const pipeline = [{
      project: { objectId: 0, updatedAt: 1 }
    }];
    const query = new Parse.Query(TestObject);
    query.aggregate(pipeline).then((results) => {
      expect(results.length).toEqual(4);
      for (let i = 0; i < results.length; i++) {
        const item = results[i];
        expect(item.hasOwnProperty('updatedAt')).toEqual(true);
        expect(item.hasOwnProperty('objectId')).toEqual(false);
      }
      done();
    });
  });

  it_exclude_dbs(['postgres'])('cannot group by date field (excluding createdAt and updatedAt)', (done) => {
    const obj1 = new TestObject({ dateField: new Date(1990, 11, 1) });
    const obj2 = new TestObject({ dateField: new Date(1990, 5, 1) });
    const obj3 = new TestObject({ dateField: new Date(1990, 11, 1) });
    const pipeline = [{
      group: {
        objectId: { day: { $dayOfMonth: "$dateField" }, month: { $month: "$dateField" }, year: { $year: "$dateField" } },
        count: { $sum: 1 }
      }
    }];
    Parse.Object.saveAll([obj1, obj2, obj3]).then(() => {
      const query = new Parse.Query(TestObject);
      return query.aggregate(pipeline);
    }).then(done.fail).catch((error) => {
      expect(error.code).toEqual(Parse.Error.INVALID_QUERY);
      done();
    });
  });

  it('group by pointer', (done) => {
    const pointer1 = new TestObject();
    const pointer2 = new TestObject();
    const obj1 = new TestObject({ pointer: pointer1 });
    const obj2 = new TestObject({ pointer: pointer2 });
    const obj3 = new TestObject({ pointer: pointer1 });
    const pipeline = [
      { group: { objectId: '$pointer' } }
    ];
    Parse.Object.saveAll([pointer1, pointer2, obj1, obj2, obj3]).then(() => {
      const query = new Parse.Query(TestObject);
      return query.aggregate(pipeline);
    }).then((results) => {
      expect(results.length).toEqual(3);
      expect(results.some(result => result.objectId === pointer1.id)).toEqual(true);
      expect(results.some(result => result.objectId === pointer2.id)).toEqual(true);
      expect(results.some(result => result.objectId === null)).toEqual(true);
      done();
    });
  });

  it('group sum query', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        group: { objectId: null, total: { $sum: '$score' } },
      }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .then((resp) => {
        expect(resp.results[0].hasOwnProperty('objectId')).toBe(true);
        expect(resp.results[0].objectId).toBe(null);
        expect(resp.results[0].total).toBe(50);
        done();
      }).catch(done.fail);
  });

  it('group count query', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        group: { objectId: null, total: { $sum: 1 } },
      }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .then((resp) => {
        expect(resp.results[0].hasOwnProperty('objectId')).toBe(true);
        expect(resp.results[0].objectId).toBe(null);
        expect(resp.results[0].total).toBe(4);
        done();
      }).catch(done.fail);
  });

  it('group min query', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        group: { objectId: null, minScore: { $min: '$score' } },
      }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .then((resp) => {
        expect(resp.results[0].hasOwnProperty('objectId')).toBe(true);
        expect(resp.results[0].objectId).toBe(null);
        expect(resp.results[0].minScore).toBe(10);
        done();
      }).catch(done.fail);
  });

  it('group max query', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        group: { objectId: null, maxScore: { $max: '$score' } },
      }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .then((resp) => {
        expect(resp.results[0].hasOwnProperty('objectId')).toBe(true);
        expect(resp.results[0].objectId).toBe(null);
        expect(resp.results[0].maxScore).toBe(20);
        done();
      }).catch(done.fail);
  });

  it('group avg query', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        group: { objectId: null, avgScore: { $avg: '$score' } },
      }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .then((resp) => {
        expect(resp.results[0].hasOwnProperty('objectId')).toBe(true);
        expect(resp.results[0].objectId).toBe(null);
        expect(resp.results[0].avgScore).toBe(12.5);
        done();
      }).catch(done.fail);
  });

  it('limit query', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        limit: 2,
      }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .then((resp) => {
        expect(resp.results.length).toBe(2);
        done();
      }).catch(done.fail);
  });

  it('sort ascending query', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        sort: { name: 1 },
      }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .then((resp) => {
        expect(resp.results.length).toBe(4);
        expect(resp.results[0].name).toBe('bar');
        expect(resp.results[1].name).toBe('dpl');
        expect(resp.results[2].name).toBe('foo');
        expect(resp.results[3].name).toBe('foo');
        done();
      }).catch(done.fail);
  });

  it('sort decending query', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        sort: { name: -1 },
      }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .then((resp) => {
        expect(resp.results.length).toBe(4);
        expect(resp.results[0].name).toBe('foo');
        expect(resp.results[1].name).toBe('foo');
        expect(resp.results[2].name).toBe('dpl');
        expect(resp.results[3].name).toBe('bar');
        done();
      }).catch(done.fail);
  });

  it('skip query', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        skip: 2,
      }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .then((resp) => {
        expect(resp.results.length).toBe(2);
        done();
      }).catch(done.fail);
  });

  it('match comparison date query', (done) => {
    const today = new Date();
    const yesterday = new Date();
    const tomorrow = new Date();
    yesterday.setDate(today.getDate() - 1);
    tomorrow.setDate(today.getDate() + 1);
    const obj1 = new TestObject({ dateField: yesterday });
    const obj2 = new TestObject({ dateField: today });
    const obj3 = new TestObject({ dateField: tomorrow });
    const pipeline = [
      { match: { dateField: { $lt: tomorrow } } }
    ];
    Parse.Object.saveAll([obj1, obj2, obj3]).then(() => {
      const query = new Parse.Query(TestObject);
      return query.aggregate(pipeline);
    }).then((results) => {
      expect(results.length).toBe(2);
      done();
    });
  });

  it('match comparison query', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        match: { score: { $gt: 15 }},
      }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .then((resp) => {
        expect(resp.results.length).toBe(1);
        expect(resp.results[0].score).toBe(20);
        done();
      }).catch(done.fail);
  });

  it('match multiple comparison query', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        match: { score: { $gt: 5, $lt: 15 }},
      }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .then((resp) => {
        expect(resp.results.length).toBe(3);
        expect(resp.results[0].score).toBe(10);
        expect(resp.results[1].score).toBe(10);
        expect(resp.results[2].score).toBe(10);
        done();
      }).catch(done.fail);
  });

  it('match complex comparison query', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        match: { score: { $gt: 5, $lt: 15 }, views: { $gt: 850, $lt: 1000 }},
      }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .then((resp) => {
        expect(resp.results.length).toBe(1);
        expect(resp.results[0].score).toBe(10);
        expect(resp.results[0].views).toBe(900);
        done();
      }).catch(done.fail);
  });

  it('match comparison and equality query', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        match: { score: { $gt: 5, $lt: 15 }, views: 900},
      }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .then((resp) => {
        expect(resp.results.length).toBe(1);
        expect(resp.results[0].score).toBe(10);
        expect(resp.results[0].views).toBe(900);
        done();
      }).catch(done.fail);
  });

  it('match $or query', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        match: { $or: [{ score: { $gt: 15, $lt: 25 } }, { views: { $gt: 750, $lt: 850 } }]},
      }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .then((resp) => {
        expect(resp.results.length).toBe(2);
        // Match score { $gt: 15, $lt: 25 }
        expect(resp.results.some(result => result.score === 20)).toEqual(true);
        expect(resp.results.some(result => result.views === 700)).toEqual(true);

        // Match view { $gt: 750, $lt: 850 }
        expect(resp.results.some(result => result.score === 10)).toEqual(true);
        expect(resp.results.some(result => result.views === 800)).toEqual(true);
        done();
      }).catch(done.fail);
  });

  it('match objectId query', (done) => {
    const obj1 = new TestObject();
    const obj2 = new TestObject();
    Parse.Object.saveAll([obj1, obj2]).then(() => {
      const pipeline = [
        { match: { objectId: obj1.id } }
      ];
      const query = new Parse.Query(TestObject);
      return query.aggregate(pipeline);
    }).then((results) => {
      expect(results.length).toEqual(1);
      expect(results[0].objectId).toEqual(obj1.id);
      done();
    });
  });

  it('match field query', (done) => {
    const obj1 = new TestObject({ name: 'TestObject1'});
    const obj2 = new TestObject({ name: 'TestObject2'});
    Parse.Object.saveAll([obj1, obj2]).then(() => {
      const pipeline = [
        { match: { name: 'TestObject1' } }
      ];
      const query = new Parse.Query(TestObject);
      return query.aggregate(pipeline);
    }).then((results) => {
      expect(results.length).toEqual(1);
      expect(results[0].objectId).toEqual(obj1.id);
      done();
    });
  });

  it('match pointer query', (done) => {
    const pointer1 = new PointerObject();
    const pointer2 = new PointerObject();
    const obj1 = new TestObject({ pointer: pointer1 });
    const obj2 = new TestObject({ pointer: pointer2 });
    const obj3 = new TestObject({ pointer: pointer1 });

    Parse.Object.saveAll([pointer1, pointer2, obj1, obj2, obj3]).then(() => {
      const pipeline = [
        { match: { pointer: pointer1.id } }
      ];
      const query = new Parse.Query(TestObject);
      return query.aggregate(pipeline);
    }).then((results) => {
      expect(results.length).toEqual(2);
      expect(results[0].pointer.objectId).toEqual(pointer1.id);
      expect(results[1].pointer.objectId).toEqual(pointer1.id);
      expect(results.some(result => result.objectId === obj1.id)).toEqual(true);
      expect(results.some(result => result.objectId === obj3.id)).toEqual(true);
      done();
    });
  });

  it_exclude_dbs(['postgres'])('match exists query', (done) => {
    const pipeline = [
      { match: { score: { $exists: true } } }
    ];
    const query = new Parse.Query(TestObject);
    query.aggregate(pipeline).then((results) => {
      expect(results.length).toEqual(4);
      done();
    });
  });

  it('match date query - createdAt', (done) => {
    const obj1 = new TestObject();
    const obj2 = new TestObject();

    Parse.Object.saveAll([obj1, obj2]).then(() => {
      const now = new Date();
      const today = new Date(now.getFullYear(), now.getMonth(), now.getDate());
      const pipeline = [
        { match: { 'createdAt': { $gte: today } } }
      ];
      const query = new Parse.Query(TestObject);
      return query.aggregate(pipeline);
    }).then((results) => {
      // Four objects were created initially, we added two more.
      expect(results.length).toEqual(6);
      done();
    });
  });

  it('match date query - updatedAt', (done) => {
    const obj1 = new TestObject();
    const obj2 = new TestObject();

    Parse.Object.saveAll([obj1, obj2]).then(() => {
      const now = new Date();
      const today = new Date(now.getFullYear(), now.getMonth(), now.getDate());
      const pipeline = [
        { match: { 'updatedAt': { $gte: today } } }
      ];
      const query = new Parse.Query(TestObject);
      return query.aggregate(pipeline);
    }).then((results) => {
      // Four objects were added initially, we added two more.
      expect(results.length).toEqual(6);
      done();
    });
  });

  it('match date query - empty', (done) => {
    const obj1 = new TestObject();
    const obj2 = new TestObject();

    Parse.Object.saveAll([obj1, obj2]).then(() => {
      const now = new Date();
      const future = new Date(now.getFullYear(), now.getMonth() + 1, now.getDate());
      const pipeline = [
        { match: { 'createdAt': future } }
      ];
      const query = new Parse.Query(TestObject);
      return query.aggregate(pipeline);
    }).then((results) => {
      expect(results.length).toEqual(0);
      done();
    });
  });

  it_exclude_dbs(['postgres'])('match pointer with operator query', (done) => {
    const pointer = new PointerObject();

    const obj1 = new TestObject({ pointer });
    const obj2 = new TestObject({ pointer });
    const obj3 = new TestObject();

    Parse.Object.saveAll([pointer, obj1, obj2, obj3]).then(() => {
      const pipeline = [
        { match: { pointer: { $exists: true } } }
      ];
      const query = new Parse.Query(TestObject);
      return query.aggregate(pipeline);
    }).then((results) => {
      expect(results.length).toEqual(2);
      expect(results[0].pointer.objectId).toEqual(pointer.id);
      expect(results[1].pointer.objectId).toEqual(pointer.id);
      expect(results.some(result => result.objectId === obj1.id)).toEqual(true);
      expect(results.some(result => result.objectId === obj2.id)).toEqual(true);
      done();
    });
  });

  it('project query', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        project: { name: 1 },
      }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .then((resp) => {
        resp.results.forEach((result) => {
          expect(result.objectId).not.toBe(undefined);
          expect(result.name).not.toBe(undefined);
          expect(result.sender).toBe(undefined);
          expect(result.size).toBe(undefined);
          expect(result.score).toBe(undefined);
        });
        done();
      }).catch(done.fail);
  });

  it('multiple project query', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        project: { name: 1, score: 1, sender: 1 },
      }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .then((resp) => {
        resp.results.forEach((result) => {
          expect(result.objectId).not.toBe(undefined);
          expect(result.name).not.toBe(undefined);
          expect(result.score).not.toBe(undefined);
          expect(result.sender).not.toBe(undefined);
          expect(result.size).toBe(undefined);
        });
        done();
      }).catch(done.fail);
  });

  it('project pointer query', (done) => {
    const pointer = new PointerObject();
    const obj = new TestObject({ pointer, name: 'hello' });

    obj.save().then(() => {
      const pipeline = [
        { match: { objectId: obj.id } },
        { project: { pointer: 1, name: 1, createdAt: 1 } }
      ];
      const query = new Parse.Query(TestObject);
      return query.aggregate(pipeline);
    }).then((results) => {
      expect(results.length).toEqual(1);
      expect(results[0].name).toEqual('hello');
      expect(results[0].createdAt).not.toBe(undefined);
      expect(results[0].pointer.objectId).toEqual(pointer.id);
      done();
    });
  });

  it('project with group query', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        project: { score: 1 },
        group: { objectId: '$score', score: { $sum: '$score' } },
      }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .then((resp) => {
        expect(resp.results.length).toBe(2);
        resp.results.forEach((result) => {
          expect(result.hasOwnProperty('objectId')).toBe(true);
          expect(result.name).toBe(undefined);
          expect(result.sender).toBe(undefined);
          expect(result.size).toBe(undefined);
          expect(result.score).not.toBe(undefined);
          if (result.objectId === 10) {
            expect(result.score).toBe(30);
          }
          if (result.objectId === 20) {
            expect(result.score).toBe(20);
          }
        });
        done();
      }).catch(done.fail);
  });

  it('class does not exist return empty', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        group: { objectId: null, total: { $sum: '$score' } },
      }
    });
    rp.get(Parse.serverURL + '/aggregate/UnknownClass', options)
      .then((resp) => {
        expect(resp.results.length).toBe(0);
        done();
      }).catch(done.fail);
  });

  it('field does not exist return empty', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        group: { objectId: null, total: { $sum: '$unknownfield' } },
      }
    });
    rp.get(Parse.serverURL + '/aggregate/UnknownClass', options)
      .then((resp) => {
        expect(resp.results.length).toBe(0);
        done();
      }).catch(done.fail);
  });

  it('distinct query', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: { distinct: 'score' }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .then((resp) => {
        expect(resp.results.length).toBe(2);
        expect(resp.results.includes(10)).toBe(true);
        expect(resp.results.includes(20)).toBe(true);
        done();
      }).catch(done.fail);
  });

  it('distinct query with where', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        distinct: 'score',
        where: {
          name: 'bar'
        }
      }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .then((resp) => {
        expect(resp.results[0]).toBe(10);
        done();
      }).catch(done.fail);
  });

  it('distinct query with where string', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        distinct: 'score',
        where: JSON.stringify({name:'bar'}),
      }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .then((resp) => {
        expect(resp.results[0]).toBe(10);
        done();
      }).catch(done.fail);
  });

  it('distinct nested', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: { distinct: 'sender.group' }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .then((resp) => {
        expect(resp.results.length).toBe(2);
        expect(resp.results.includes('A')).toBe(true);
        expect(resp.results.includes('B')).toBe(true);
        done();
      }).catch(done.fail);
  });

  it('distinct pointer', (done) => {
    const pointer1 = new PointerObject();
    const pointer2 = new PointerObject();
    const obj1 = new TestObject({ pointer: pointer1 });
    const obj2 = new TestObject({ pointer: pointer2 });
    const obj3 = new TestObject({ pointer: pointer1 });
    Parse.Object.saveAll([pointer1, pointer2, obj1, obj2, obj3]).then(() => {
      const query = new Parse.Query(TestObject);
      return query.distinct('pointer');
    }).then((results) => {
      expect(results.length).toEqual(2);
      expect(results.some(result => result.objectId === pointer1.id)).toEqual(true);
      expect(results.some(result => result.objectId === pointer2.id)).toEqual(true);
      done();
    });
  });

  it('distinct class does not exist return empty', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: { distinct: 'unknown' }
    });
    rp.get(Parse.serverURL + '/aggregate/UnknownClass', options)
      .then((resp) => {
        expect(resp.results.length).toBe(0);
        done();
      }).catch(done.fail);
  });

  it('distinct field does not exist return empty', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: { distinct: 'unknown' }
    });
    const obj = new TestObject();
    obj.save().then(() => {
      return rp.get(Parse.serverURL + '/aggregate/TestObject', options);
    }).then((resp) => {
      expect(resp.results.length).toBe(0);
      done();
    }).catch(done.fail);
  });

  it('distinct array', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: { distinct: 'size' }
    });
    rp.get(Parse.serverURL + '/aggregate/TestObject', options)
      .then((resp) => {
        expect(resp.results.length).toBe(3);
        expect(resp.results.includes('S')).toBe(true);
        expect(resp.results.includes('M')).toBe(true);
        expect(resp.results.includes('L')).toBe(true);
        done();
      }).catch(done.fail);
  });

  it('distinct null field', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: { distinct: 'distinctField' }
    });
    const user1 = new Parse.User();
    user1.setUsername('distinct_1');
    user1.setPassword('password');
    user1.set('distinctField', 'one');

    const user2 = new Parse.User();
    user2.setUsername('distinct_2');
    user2.setPassword('password');
    user2.set('distinctField', null);
    user1.signUp().then(() => {
      return user2.signUp();
    }).then(() => {
      return rp.get(Parse.serverURL + '/aggregate/_User', options);
    }).then((resp) => {
      expect(resp.results.length).toEqual(1);
      expect(resp.results).toEqual(['one']);
      done();
    }).catch(done.fail);
  });

  it('does not return sensitive hidden properties', (done) => {
    const options = Object.assign({}, masterKeyOptions, {
      body: {
        match: {
          score: {
            $gt: 5
          }
        },
      }
    });

    const username = 'leaky_user';
    const score = 10;

    const user = new Parse.User();
    user.setUsername(username);
    user.setPassword('password');
    user.set('score', score);
    user.signUp().then(function() {
      return rp.get(Parse.serverURL + '/aggregate/_User', options);
    }).then(function(resp) {
      expect(resp.results.length).toBe(1);
      const result = resp.results[0];

      // verify server-side keys are not present...
      expect(result._hashed_password).toBe(undefined);
      expect(result._wperm).toBe(undefined);
      expect(result._rperm).toBe(undefined);
      expect(result._acl).toBe(undefined);
      expect(result._created_at).toBe(undefined);
      expect(result._updated_at).toBe(undefined);

      // verify createdAt, updatedAt and others are present
      expect(result.createdAt).not.toBe(undefined);
      expect(result.updatedAt).not.toBe(undefined);
      expect(result.objectId).not.toBe(undefined);
      expect(result.username).toBe(username);
      expect(result.score).toBe(score);

      done();
    }).catch(function(err) {
      fail(err);
    });
  });

  it_exclude_dbs(['postgres'])('aggregate allow multiple of same stage', (done) => {
    const pointer1 = new TestObject({ value: 1});
    const pointer2 = new TestObject({ value: 2});
    const pointer3 = new TestObject({ value: 3});

    const obj1 = new TestObject({ pointer: pointer1, name: 'Hello' });
    const obj2 = new TestObject({ pointer: pointer2, name: 'Hello' });
    const obj3 = new TestObject({ pointer: pointer3, name: 'World' });

    const options = Object.assign({}, masterKeyOptions, {
      body: [{
        match: { name: "Hello" },
      }, {
        // Transform className$objectId to objectId and store in new field tempPointer
        project: {
          tempPointer: { $substr: [ "$_p_pointer", 11, -1 ] }, // Remove TestObject$
        },
      }, {
        // Left Join, replace objectId stored in tempPointer with an actual object
        lookup: {
          from: "test_TestObject",
          localField: "tempPointer",
          foreignField: "_id",
          as: "tempPointer"
        },
      }, {
        // lookup returns an array, Deconstructs an array field to objects
        unwind: {
          path: "$tempPointer",
        },
      }, {
        match : { "tempPointer.value" : 2 },
      }]
    });
    Parse.Object.saveAll([pointer1, pointer2, pointer3, obj1, obj2, obj3]).then(() => {
      return rp.get(Parse.serverURL + '/aggregate/TestObject', options);
    }).then((resp) => {
      expect(resp.results.length).toEqual(1);
      expect(resp.results[0].tempPointer.value).toEqual(2);
      done();
    });
  });
});