(function() {
'use strict';

var s = new ShardingTest({name: "add_shard1", shards: 1, useHostname: false });

// Create a shard and add a database; if the database is not duplicated the mongod should accept
// it as shard
var conn1 = MongoRunner.runMongod({});
var db1 = conn1.getDB("testDB");

var numObjs = 3;
for (var i = 0; i < numObjs; i++){
    assert.writeOK(db1.foo.save({ a : i }));
}

var configDB = s.s.getDB('config');
assert.eq(null, configDB.databases.findOne({ _id: 'testDB' }));

var newShard = "myShard";
assert.commandWorked(s.admin.runCommand({ addshard: "localhost:" + conn1.port,
                                          name: newShard,
                                          maxSize: 1024 }));

assert.neq(null, configDB.databases.findOne({ _id: 'testDB' }));

var newShardDoc = configDB.shards.findOne({ _id: newShard });
assert.eq(1024, newShardDoc.maxSize);

// a mongod with an existing database name should not be allowed to become a shard
var conn2 = MongoRunner.runMongod({});

var db2 = conn2.getDB("otherDB");
assert.writeOK(db2.foo.save({ a: 1 }));

var db3 = conn2.getDB("testDB");
assert.writeOK(db3.foo.save({ a: 1 }));

s.config.databases.find().forEach(printjson);

var rejectedShard = "rejectedShard";
assert(!s.admin.runCommand({ addshard: "localhost:" + conn2.port, name : rejectedShard }).ok,
       "accepted mongod with duplicate db");

// Check that all collection that were local to the mongod's are accessible through the mongos
var sdb1 = s.getDB("testDB");
assert.eq(numObjs, sdb1.foo.count(), "wrong count for database that existed before addshard");

var sdb2 = s.getDB("otherDB");
assert.eq(0, sdb2.foo.count(), "database of rejected shard appears through mongos");

// make sure we can move a DB from the original mongod to a previoulsy existing shard
assert.eq(s.normalize(s.config.databases.findOne({ _id : "testDB" }).primary), newShard, "DB primary is wrong");

var origShard = s.getNonPrimaries("testDB")[0];
s.adminCommand({ moveprimary : "testDB", to : origShard });
assert.eq(s.normalize(s.config.databases.findOne({ _id : "testDB" }).primary), origShard, "DB primary didn't move");
assert.eq(numObjs, sdb1.foo.count(), "wrong count after moving datbase that existed before addshard");

// make sure we can shard the original collections
sdb1.foo.ensureIndex({ a : 1 }, { unique : true }); // can't shard populated collection without an index
s.adminCommand({ enablesharding : "testDB" });
s.adminCommand({ shardcollection : "testDB.foo", key: { a : 1 } });
s.adminCommand({ split : "testDB.foo", middle: { a : Math.floor(numObjs/2) } });
assert.eq(2, s.config.chunks.count(), "wrong chunk number after splitting collection that existed before");
assert.eq(numObjs, sdb1.foo.count(), "wrong count after splitting collection that existed before");

MongoRunner.stopMongod(conn1);
MongoRunner.stopMongod(conn2);

s.stop();

})();