// See: SERVER-9240, SERVER-9401.
// s2 rejects shapes with duplicate adjacent points as invalid, but they are
// valid in GeoJSON.  We store the duplicates, but internally remove them
// before indexing or querying.
t = db.geo_s2dupe_points;
t.drop();
t.createIndex({geo: "2dsphere"});

function testDuplicates(shapeName, shapeWithDupes, shapeWithoutDupes) {
    // insert a doc with dupes
    assert.commandWorked(t.insert(shapeWithDupes));

    // duplicates are preserved when the document is fetched by _id
    assert.eq(shapeWithDupes, t.findOne({_id: shapeName}));
    assert.neq(shapeWithoutDupes, t.findOne({_id: shapeName}).geo);

    // can query with $geoIntersects inserted doc using both the duplicated and de-duplicated docs
    assert.eq(t.find({geo: {$geoIntersects: {$geometry: shapeWithDupes.geo}}}).itcount(), 1);
    assert.eq(t.find({geo: {$geoIntersects: {$geometry: shapeWithoutDupes}}}).itcount(), 1);

    // direct document equality in queries is preserved
    assert.eq(t.find({geo: shapeWithoutDupes}).itcount(), 0);
    assert.eq(t.find({geo: shapeWithDupes.geo}).itcount(), 1);
}

// LineString
var lineWithDupes = {
    _id: "line",
    geo: {type: "LineString", coordinates: [[40, 5], [40, 5], [40, 5], [41, 6], [41, 6]]}
};
var lineWithoutDupes = {type: "LineString", coordinates: [[40, 5], [41, 6]]};

// Polygon
var polygonWithDupes = {
    _id: "poly",
    geo: {
        type: "Polygon",
        coordinates: [
            [[-3.0, -3.0], [3.0, -3.0], [3.0, 3.0], [-3.0, 3.0], [-3.0, -3.0]],
            [[-2.0, -2.0], [2.0, -2.0], [2.0, 2.0], [-2.0, 2.0], [-2.0, -2.0], [-2.0, -2.0]]
        ]
    }
};
var polygonWithoutDupes = {
    type: "Polygon",
    coordinates: [
        [[-3.0, -3.0], [3.0, -3.0], [3.0, 3.0], [-3.0, 3.0], [-3.0, -3.0]],
        [[-2.0, -2.0], [2.0, -2.0], [2.0, 2.0], [-2.0, 2.0], [-2.0, -2.0]]
    ]
};

// MultiPolygon
var multiPolygonWithDupes = {
    _id: "multi",
    geo: {
        type: "MultiPolygon",
        coordinates: [
            [[[102.0, 2.0], [103.0, 2.0], [103.0, 2.0], [103.0, 3.0], [102.0, 3.0], [102.0, 2.0]]],
            [
                [
                    [100.0, 0.0],
                    [101.0, 0.0],
                    [101.0, 1.0],
                    [101.0, 1.0],
                    [100.0, 1.0],
                    [100.0, 0.0]
                ],
                [
                    [100.2, 0.2],
                    [100.8, 0.2],
                    [100.8, 0.8],
                    [100.8, 0.8],
                    [100.8, 0.8],
                    [100.2, 0.8],
                    [100.2, 0.2]
                ]
            ]
        ]
    }
};
var multiPolygonWithoutDupes = {
    type: "MultiPolygon",
    coordinates: [
        [[[102.0, 2.0], [103.0, 2.0], [103.0, 3.0], [102.0, 3.0], [102.0, 2.0]]],
        [
            [[100.0, 0.0], [101.0, 0.0], [101.0, 1.0], [100.0, 1.0], [100.0, 0.0]],
            [[100.2, 0.2], [100.8, 0.2], [100.8, 0.8], [100.2, 0.8], [100.2, 0.2]]
        ]
    ]
};

testDuplicates("line", lineWithDupes, lineWithoutDupes);
testDuplicates("poly", polygonWithDupes, polygonWithoutDupes);
testDuplicates("multi", multiPolygonWithDupes, multiPolygonWithoutDupes);