'use strict';
load('jstests/aggregation/extras/utils.js');

// This test makes assertions about the number of sessions, which are not compatible with
// implicit sessions.
TestData.disableImplicitSessions = true;

// All tests for the $listLocalSessions aggregation stage.
function runListLocalSessionsTest(mongod) {
    assert(mongod);
    const admin = mongod.getDB('admin');
    const db = mongod.getDB("test");

    const pipeline = [{'$listLocalSessions': {}}];
    function listLocalSessions() {
        return admin.aggregate(pipeline);
    }

    admin.createUser({user: 'admin', pwd: 'pass', roles: jsTest.adminUserRoles});
    assert(admin.auth('admin', 'pass'));

    db.createUser({user: 'user1', pwd: 'pass', roles: jsTest.basicUserRoles});
    db.createUser({user: 'user2', pwd: 'pass', roles: jsTest.basicUserRoles});
    admin.logout();

    // Shouldn't be able to listLocalSessions when not logged in.
    assertErrorCode(admin, pipeline, ErrorCodes.Unauthorized);

    // Start a new session and capture its sessionId.
    assert(db.auth('user1', 'pass'));
    const myid = assert.commandWorked(db.runCommand({startSession: 1})).id.id;
    assert(myid !== undefined);

    // Ensure that the cache now contains the session.
    const resultArray = assert.doesNotThrow(listLocalSessions).toArray();
    assert.eq(resultArray.length, 1);
    const cacheid = resultArray[0]._id.id;
    const myuid = resultArray[0]._id.uid;
    assert(cacheid !== undefined);
    assert.eq(0, bsonWoCompare({x: cacheid}, {x: myid}));

    // Try asking for the session by username.
    function listMyLocalSessions() {
        return admin.aggregate([{'$listLocalSessions': {users: [{user: "user1", db: "test"}]}}]);
    }
    const resultArrayMine = assert.doesNotThrow(listMyLocalSessions).toArray();
    assert.eq(bsonWoCompare(resultArray, resultArrayMine), 0);

    // Ensure that changing users hides the session.
    db.logout();
    assert(db.auth('user2', 'pass'));
    const otherArray = assert.doesNotThrow(listLocalSessions).toArray();
    assert.eq(otherArray.length, 0);

    // Ensure that one user can not explicitly ask for another's sessions.
    assertErrorCode(admin,
                    [{'$listLocalSessions': {users: [{user: "user1", db: "test"}]}}],
                    ErrorCodes.Unauthorized);
}