//////////////////////////////////////////////////////////////////////////
//
// pgAdmin 4 - PostgreSQL Tools
//
// Copyright (C) 2013 - 2017, The pgAdmin Development Team
// This software is released under the PostgreSQL Licence
//
//////////////////////////////////////////////////////////////////////////

import rangeBoundaryNavigator from 'sources/selection/range_boundary_navigator';
import Slick from 'slickgrid';

describe('RangeBoundaryNavigator', function () {

  describe('#getUnion', function () {
    describe('when the ranges completely overlap', function () {
      it('returns a list with that range', function () {
        var ranges = [[1, 4], [1, 4], [1, 4]];

        var union = rangeBoundaryNavigator.getUnion(ranges);

        expect(union).toEqual([[1, 4]]);
      });
    });

    describe('when the ranges all overlap partially or touch', function () {
      it('returns one long range', function () {
        var rangeBounds = [[3, 6], [1, 4], [7, 14]];

        var union = rangeBoundaryNavigator.getUnion(rangeBounds);

        expect(union).toEqual([[1, 14]]);
      });

      it('returns them in order from lowest to highest', function () {
        var rangeBounds = [[3, 6], [2, 3], [10, 12]];

        var union = rangeBoundaryNavigator.getUnion(rangeBounds);

        expect(union).toEqual([[2, 6], [10, 12]]);
      });

      describe('when one range completely overlaps another', function() {

        it('returns them in order from lowest to highest', function () {
          var rangeBounds = [[9, 14], [2, 3], [11, 13]];

          var union = rangeBoundaryNavigator.getUnion(rangeBounds);

          expect(union).toEqual([[2, 3], [9, 14]]);
        });
      });

      describe('when one range is a subset of another', function () {
        it('returns the larger range', function () {
          var rangeBounds = [[2, 6], [1, 14], [8, 10]];

          var union = rangeBoundaryNavigator.getUnion(rangeBounds);

          expect(union).toEqual([[1, 14]]);
        });
      });
    });

    describe('when the ranges do not touch', function () {
      it('returns them in order from lowest to highest', function () {
        var rangeBounds = [[3, 6], [1, 1], [8, 10]];

        var union = rangeBoundaryNavigator.getUnion(rangeBounds);

        expect(union).toEqual([[1, 1], [3, 6], [8, 10]]);
      });
    });
  });

  describe('#mapDimensionBoundaryUnion', function () {
    it('returns a list of the results of the callback', function () {
      var rangeBounds = [[0, 1], [3, 3]];
      var callback = function () {
        return 'hello';
      };
      var result = rangeBoundaryNavigator.mapDimensionBoundaryUnion(rangeBounds, callback);
      expect(result).toEqual(['hello', 'hello', 'hello']);
    });

    it('calls the callback with each index in the dimension', function () {
      var rangeBounds = [[0, 1], [3, 3]];
      var callback = jasmine.createSpy('callbackSpy');
      rangeBoundaryNavigator.mapDimensionBoundaryUnion(rangeBounds, callback);
      expect(callback.calls.allArgs()).toEqual([[0], [1], [3]]);
    });
  });

  describe('#mapOver2DArray', function () {
    var data, rowCollector, processCell;
    beforeEach(function () {
      data = [[0, 1, 2, 3], [2, 2, 2, 2], [4, 5, 6, 7]];
      processCell = function (rowIndex, columnIndex) {
        return data[rowIndex][columnIndex];
      };
      rowCollector = function (rowData) {
        return JSON.stringify(rowData);
      };
    });

    it('calls the callback for each item in the ranges', function () {
      var rowRanges = [[0, 0], [2, 2]];
      var colRanges = [[0, 3]];

      var selectionResult = rangeBoundaryNavigator.mapOver2DArray(rowRanges, colRanges, processCell, rowCollector);

      expect(selectionResult).toEqual(['[0,1,2,3]', '[4,5,6,7]']);
    });

    describe('when the ranges are out of order/duplicated', function () {
      var rowRanges, colRanges;
      beforeEach(function () {
        rowRanges = [[2, 2], [2, 2], [0, 0]];
        colRanges = [[0, 3]];
      });

      it('uses the union of the ranges', function () {
        spyOn(rangeBoundaryNavigator, 'getUnion').and.callThrough();

        var selectionResult = rangeBoundaryNavigator.mapOver2DArray(rowRanges, colRanges, processCell, rowCollector);

        expect(rangeBoundaryNavigator.getUnion).toHaveBeenCalledWith(rowRanges);
        expect(rangeBoundaryNavigator.getUnion).toHaveBeenCalledWith(colRanges);
        expect(selectionResult).toEqual(['[0,1,2,3]', '[4,5,6,7]']);
      });
    });
  });

  describe('#rangesToCsv', function () {
    var data, columnDefinitions, ranges;
    beforeEach(function () {
      data = [{'id':1, 'animal':'leopard', 'size':'12'},
              {'id':2, 'animal':'lion', 'size':'13'},
              {'id':3, 'animal':'cougar', 'size':'9'},
              {'id':4, 'animal':'tiger', 'size':'10'}];

      columnDefinitions = [{name: 'id', field: 'id', pos: 0},
                            {name: 'animal', field: 'animal', pos: 1},
                            {name: 'size', field: 'size', pos: 2}];
      ranges = [new Slick.Range(0, 0, 0, 2), new Slick.Range(3, 0, 3, 2)];
    });

    it('returns csv for the provided ranges', function () {
      var csvResult = rangeBoundaryNavigator.rangesToCsv(data, columnDefinitions, ranges);
      expect(csvResult).toEqual('1,\'leopard\',\'12\'\n4,\'tiger\',\'10\'');
    });

    describe('when no cells are selected', function () {
      it('should return an empty string', function () {
        var csvResult = rangeBoundaryNavigator.rangesToCsv(data, columnDefinitions, []);

        expect(csvResult).toEqual('');
      });
    });

    describe('when there is an extra column with checkboxes', function () {
      beforeEach(function () {
        columnDefinitions = [{name: 'not-a-data-column'},
          {name: 'id', field: 'id', pos: 0},
          {name: 'animal', field: 'animal', pos: 1},
          {name: 'size', field: 'size',pos: 2}];
        ranges = [new Slick.Range(0, 0, 0, 3), new Slick.Range(3, 0, 3, 3)];
      });

      it('returns csv for the columns with data', function () {
        var csvResult = rangeBoundaryNavigator.rangesToCsv(data, columnDefinitions, ranges);

        expect(csvResult).toEqual('1,\'leopard\',\'12\'\n4,\'tiger\',\'10\'');
      });
      describe('when no cells are selected', function () {
        it('should return an empty string', function () {
          var csvResult = rangeBoundaryNavigator.rangesToCsv(data, columnDefinitions, []);

          expect(csvResult).toEqual('');
        });
      });
    });
  });
});
