// Ensure you can't shard on an array key

var st = new ShardingTest({name: jsTestName(), shards: 3});

var mongos = st.s0;

var coll = mongos.getCollection(jsTestName() + ".foo");

st.shardColl(coll, {_id: 1, i: 1}, {_id: ObjectId(), i: 1});

printjson(mongos.getDB("config").chunks.find().toArray());

st.printShardingStatus();

print("1: insert some invalid data");

var value = null;

// Insert an object with invalid array key
assert.writeError(coll.insert({i: [1, 2]}));

// Insert an object with all the right fields, but an invalid array val for _id
assert.writeError(coll.insert({_id: [1, 2], i: 3}));

// Insert an object with valid array key
assert.writeOK(coll.insert({i: 1}));

// Update the value with valid other field
value = coll.findOne({i: 1});
assert.writeOK(coll.update(value, {$set: {j: 2}}));

// Update the value with invalid other fields
value = coll.findOne({i: 1});
assert.writeError(coll.update(value, Object.merge(value, {i: [3]})));

// Multi-update the value with invalid other fields
value = coll.findOne({i: 1});
assert.writeError(coll.update(value, Object.merge(value, {i: [3, 4]}), false, true));

// Multi-update the value with other fields (won't work, but no error)
value = coll.findOne({i: 1});
assert.writeOK(coll.update(Object.merge(value, {i: [1, 1]}), {$set: {k: 4}}, false, true));

// Query the value with other fields (won't work, but no error)
value = coll.findOne({i: 1});
coll.find(Object.merge(value, {i: [1, 1]})).toArray();

// Can't remove using multikey, but shouldn't error
value = coll.findOne({i: 1});
coll.remove(Object.extend(value, {i: [1, 2, 3, 4]}));

// Can't remove using multikey, but shouldn't error
value = coll.findOne({i: 1});
assert.writeOK(coll.remove(Object.extend(value, {i: [1, 2, 3, 4, 5]})));
assert.eq(coll.find().itcount(), 1);

value = coll.findOne({i: 1});
assert.writeOK(coll.remove(Object.extend(value, {i: 1})));
assert.eq(coll.find().itcount(), 0);

coll.ensureIndex({_id: 1, i: 1, j: 1});
// Can insert document that will make index into a multi-key as long as it's not part of shard key.
coll.remove({});
assert.writeOK(coll.insert({i: 1, j: [1, 2]}));
assert.eq(coll.find().itcount(), 1);

// Same is true for updates.
coll.remove({});
coll.insert({_id: 1, i: 1});
assert.writeOK(coll.update({_id: 1, i: 1}, {_id: 1, i: 1, j: [1, 2]}));
assert.eq(coll.find().itcount(), 1);

// Same for upserts.
coll.remove({});
assert.writeOK(coll.update({_id: 1, i: 1}, {_id: 1, i: 1, j: [1, 2]}, true));
assert.eq(coll.find().itcount(), 1);

printjson("Sharding-then-inserting-multikey tested, now trying inserting-then-sharding-multikey");

// Insert a bunch of data then shard over key which is an array
var coll = mongos.getCollection("" + coll + "2");
for (var i = 0; i < 10; i++) {
    // TODO : does not check weird cases like [ i, i ]
    assert.writeOK(coll.insert({i: [i, i + 1]}));
}

coll.ensureIndex({_id: 1, i: 1});

try {
    st.shardColl(coll, {_id: 1, i: 1}, {_id: ObjectId(), i: 1});
} catch (e) {
    print("Correctly threw error on sharding with multikey index.");
}

st.printShardingStatus();

// Insert a bunch of data then shard over key which is not an array
var coll = mongos.getCollection("" + coll + "3");
for (var i = 0; i < 10; i++) {
    // TODO : does not check weird cases like [ i, i ]
    assert.writeOK(coll.insert({i: i}));
}

coll.ensureIndex({_id: 1, i: 1});

st.shardColl(coll, {_id: 1, i: 1}, {_id: ObjectId(), i: 1});

st.printShardingStatus();

// Finish
st.stop();