//
// Tests split vector locations with force : true
//

import {ShardingTest} from "jstests/libs/shardingtest.js";

// TODO (SERVER-87574): Performing splitVector across dbs isn't supported via mongos.
TestData.replicaSetEndpointIncompatible = true;

var options = {
    chunkSize: 1,  // MB
};

var st = new ShardingTest({shards: 1, mongos: 1, other: options});

var mongos = st.s0;
var admin = mongos.getDB("admin");
var shardAdmin = st.shard0.getDB("admin");
var coll = mongos.getCollection("foo.bar");

assert(admin.runCommand({enableSharding: coll.getDB() + ""}).ok);
assert(admin.runCommand({shardCollection: coll + "", key: {_id: 1}}).ok);
assert(admin.runCommand({split: coll + "", middle: {_id: 0}}).ok);

jsTest.log("Insert a bunch of data into a chunk of the collection...");

var bulk = coll.initializeUnorderedBulkOp();
for (var i = 0; i < (250 * 1000) + 10; i++) {
    bulk.insert({_id: i});
}
assert.commandWorked(bulk.execute());

jsTest.log("Insert a bunch of data into the rest of the collection...");

bulk = coll.initializeUnorderedBulkOp();
for (let i = 1; i <= (250 * 1000); i++) {
    bulk.insert({_id: -i});
}
assert.commandWorked(bulk.execute());

jsTest.log("Get split points of the chunk using force : true...");

var splitKeys = assert
                    .commandWorked(shardAdmin.runCommand({
                        splitVector: coll + "",
                        keyPattern: {_id: 1},
                        min: {_id: 0},
                        max: {_id: MaxKey},
                        force: true
                    }))
                    .splitKeys;

printjson(splitKeys);
printjson(coll.stats());
st.printShardingStatus();

jsTest.log("Make sure our split is approximately in half...");

assert.eq(splitKeys.length, 1);
var splitKey = splitKeys[0]._id;

assert.gt(splitKey, ((250 * 1000) / 2) - 50);
assert.lt(splitKey, ((250 * 1000) / 2) + 50);

st.stop();
