import { isAffirmative } from 'app/common/gutil';
import { FullUser, UserProfile } from 'app/common/LoginSessionAPI';
import { ANONYMOUS_USER_EMAIL, EVERYONE_EMAIL, PREVIEWER_EMAIL, UserOptions } from 'app/common/UserAPI';
import { AclRuleOrg } from 'app/gen-server/entity/AclRule';
import { Document } from 'app/gen-server/entity/Document';
import { Group } from 'app/gen-server/entity/Group';
import { Login } from 'app/gen-server/entity/Login';
import { Organization } from 'app/gen-server/entity/Organization';
import { Pref } from 'app/gen-server/entity/Pref';
import { User } from 'app/gen-server/entity/User';
import { Workspace } from 'app/gen-server/entity/Workspace';
import { HomeDBManager } from 'app/gen-server/lib/homedb/HomeDBManager';
import { GetUserOptions, NonGuestGroup, Resource } from 'app/gen-server/lib/homedb/Interfaces';
import { SUPPORT_EMAIL, UsersManager } from 'app/gen-server/lib/homedb/UsersManager';
import { updateDb } from 'app/server/lib/dbUtils';
import { prepareDatabase } from 'test/server/lib/helpers/PrepareDatabase';
import { EnvironmentSnapshot } from 'test/server/testUtils';
import { getDatabase } from 'test/testUtils';

import log from 'app/server/lib/log';
import { assert } from 'chai';
import Sinon, { SinonSandbox, SinonSpy } from 'sinon';
import { EntityManager } from 'typeorm';
import winston from 'winston';

import fs from 'fs/promises';
import { tmpdir } from 'os';
import path from 'path';
import { dereferenceConnection } from 'test/gen-server/seed';

const username = process.env.USER || "nobody";
const tmpDirPrefix = path.join(tmpdir(), `grist_test_${username}_userendpoint_`);
// it is sometimes useful in debugging to turn off automatic cleanup of sqlite databases.
const noCleanup = isAffirmative(process.env.NO_CLEANUP);

describe('UsersManager', function () {
  this.timeout('30s');
  let tmpDir: string;

  before(async function () {
    tmpDir = await fs.mkdtemp(tmpDirPrefix);
  });

  after(async function () {
    if (!noCleanup) {
      await fs.rm(tmpDir, {recursive: true});
    }
  });

  describe('static method', function () {
    /**
     * Create a simple iterator of integer starting from 0 which is incremented every time we call next()
     */
    function* makeUserIdIterator() {
      for (let i = 0; i < 500; i++) {
        yield i;
      }
    }

    /**
     * Create a table of users.
     * @param nbUsers The number of users to create
     * @param [userIdIterator=makeIdxIterator()] An iterator used to create users' id,
     *        which keep track of the increment accross calls.
     *        Pass your own iterator if you want to call this methods several times and keep the id unique.
     *        If omitted, create its own iterator that starts from 0.
     */
    function makeUsers(nbUsers: number, userIdIterator = makeUserIdIterator()): User[] {
      return Array(nbUsers).fill(null).map(() => {
        const user = new User();
        const itItem = userIdIterator.next();
        if (itItem.done) {
          throw new Error('Excessive number of users created');
        }
        user.id = itItem.value;
        user.name = `User ${itItem.value}`;
        return user;
      });
    }

    /**
     * Populate passed resources with members
     * @param resources The Resources
     * @param nbUsersByResource The number of users to create for each resources (each one is unique)
     * @returns The Resources and their respective members
     */
    function populateResourcesWithMembers(
      resources: Resource[], nbUsersByResource: number, makeResourceGrpName?: (idx: number) => string
    ): Map<Resource, User[]> {
      const membersByResource = new Map<Resource, User[]>();
      const idxIterator = makeUserIdIterator();
      for (const [idx, resource] of resources.entries()) {
        const aclRule = new AclRuleOrg();
        const group = new Group();
        if (makeResourceGrpName) {
          group.name = makeResourceGrpName(idx);
        }
        const members = makeUsers(nbUsersByResource, idxIterator);
        group.memberUsers = members;
        aclRule.group = group;
        resource.aclRules = [
          aclRule
        ];
        membersByResource.set(resource, members);
      }
      return membersByResource;
    }

    /**
     * Populate a resource with members and return the members
     */
    function populateSingleResourceWithMembers(resource: Resource, nbUsers: number) {
      const membersByResource = populateResourcesWithMembers([resource], nbUsers);
      return membersByResource.get(resource)!;
    }

    describe('getResourceUsers()', function () {
      it('should return all users from a single organization ACL', function () {
        const resource = new Organization();
        const expectedUsers = populateSingleResourceWithMembers(resource, 5);

        const result = UsersManager.getResourceUsers(resource);

        assert.deepEqual(result, expectedUsers);
      });

      it('should return all users from all resources ACL', function () {
        const resources: Resource[] = [new Organization(), new Workspace(), new Document()];
        const membersByResource = populateResourcesWithMembers(resources, 5);

        const result = UsersManager.getResourceUsers(resources);

        assert.deepEqual(result, [...membersByResource.values()].flat());
      });

      it('should deduplicate the results', function () {
        const resources: Resource[] = [new Organization(), new Workspace()];
        const membersByResource = populateResourcesWithMembers(resources, 1);
        const usersList = [...membersByResource.values()];
        const expectedResult = usersList.flat();

        const duplicateUser = new User();
        duplicateUser.id = usersList[1][0].id;
        usersList[0].unshift(duplicateUser);

        const result = UsersManager.getResourceUsers(resources);

        assert.deepEqual(result, expectedResult);
      });

      it('should return users matching group names from all resources ACL', function () {
        const someOrg = new Organization();
        const someWorkspace = new Workspace();
        const someDoc = new Document();
        const resources: Resource[] = [someOrg, someWorkspace, someDoc];
        const allGroupNames = ['OrgGrp', 'WorkspaceGrp', 'DocGrp'];
        const membersByResource = populateResourcesWithMembers(resources, 5, i => allGroupNames[i]);
        const filteredGroupNames = [ 'WorkspaceGrp', 'DocGrp' ];

        const result = UsersManager.getResourceUsers(resources, filteredGroupNames);

        const expectedResult = [...membersByResource.get(someWorkspace)!, ...membersByResource.get(someDoc)!];
        assert.deepEqual(result, expectedResult, 'should discard the users from the first resource');
      });
    });

    describe('getUsersWithRole()', function () {
      function makeGroups(groupDefinition: {[k in NonGuestGroup['name']]?: User[] | undefined}){
        const entries = Object.entries(groupDefinition) as [NonGuestGroup['name'], User[] | undefined][];

        return entries.map(([groupName, users], index) => {
          const group = new Group() as NonGuestGroup;
          group.id = index;
          group.name = groupName;
          if (users) {
            group.memberUsers = users;
          }
          return group;
        });
      }

      it('should retrieve no users if passed groups do not contain any', function () {
        const groups = makeGroups({
          'members': undefined
        });

        const result = UsersManager.getUsersWithRole(groups);

        assert.deepEqual(result, new Map([['members', undefined]] as any));
      });

      it('should retrieve users of passed groups', function () {
        const idxIt = makeUserIdIterator();
        const groupsUsersMap = {
          'editors': makeUsers(3, idxIt),
          'owners': makeUsers(4, idxIt),
          'members': makeUsers(5, idxIt),
          'viewers': []
        };
        const groups = makeGroups(groupsUsersMap);

        const result = UsersManager.getUsersWithRole(groups);

        assert.deepEqual(result, new Map(Object.entries(groupsUsersMap)));
      });

      it('should exclude users of given IDs', function () {
        const groupUsersMap = {
          'editors': makeUsers(5),
        };
        const excludedUsersId = [1, 2, 3, 4];
        const expectedUsers = [groupUsersMap.editors[0]];
        const groups = makeGroups(groupUsersMap);

        const result = UsersManager.getUsersWithRole(groups, excludedUsersId);

        assert.deepEqual(result, new Map([ ['editors', expectedUsers] ]));
      });
    });
  });

  describe('class method', function () {
    const NON_EXISTING_USER_ID = 10001337;
    let env: EnvironmentSnapshot;
    let db: HomeDBManager;
    let sandbox: SinonSandbox;
    const uniqueLocalPart = new Set<string>();

    /**
    * Works around lacks of type narrowing after asserting the value is defined.
    * This is fixed in latest versions of @types/chai
    *
    * FIXME: once upgrading @types/chai to 4.3.17 or higher, remove this function which would not be usefull anymore
    */
    function assertExists<T>(value?: T, message?: string): asserts value is T {
      assert.exists(value, message);
    }

    function ensureUnique(localPart: string) {
      if (uniqueLocalPart.has(localPart)) {
        throw new Error('passed localPart is already used elsewhere');
      }
      uniqueLocalPart.add(localPart);
      return localPart;
    }

    function createUniqueUser(uniqueEmailLocalPart: string, options?: GetUserOptions) {
      ensureUnique(uniqueEmailLocalPart);
      return getOrCreateUser(uniqueEmailLocalPart, options);
    }

    async function getOrCreateUser(localPart: string, options?: GetUserOptions) {
      return db.getUserByLogin(makeEmail(localPart), options);
    }

    function makeEmail(localPart: string) {
      return localPart + '@getgrist.com';
    }

    async function getPersonalOrg(user: User) {
      return db.getOrg({userId: user.id}, user.personalOrg.id);
    }

    async function withDataBase(dbName: string, cb: (db: HomeDBManager) => Promise<void>) {
      const database = path.join(tmpDir, dbName + '.db');
      const localDb = new HomeDBManager();
      await localDb.createNewConnection({ name: dbName, database });
      await updateDb(localDb.connection);
      try {
        await cb(localDb);
      } finally {
        await localDb.connection.destroy();
        // HACK: This is a weird case, we have established a different connection
        // but the existing connection is also impacted.
        // A found workaround consist in destroying and creating again the connection.
        //
        // TODO: Check whether using DataSource would help and avoid this hack.
        await db.connection.destroy();
        await db.createNewConnection();
        dereferenceConnection(dbName);
      }
    }

    function disableLoggingLevel<T extends keyof winston.LoggerInstance>(method: T) {
      return sandbox.stub(log, method);
    }

    /**
    * Make a user profile.
    * @param localPart A unique local part of the email (also used for the other fields).
    */
    function makeProfile(localPart: string): UserProfile {
      ensureUnique(localPart);
      return {
        email: makeEmail(localPart),
        name: `NewUser ${localPart}`,
        connectId: `ConnectId-${localPart}`,
        picture: `https://mypic.com/${localPart}.png`
      };
    }


    before(async function () {
      if (process.env.TYPEORM_TYPE === "postgres") {
        this.skip();
      }
      env = new EnvironmentSnapshot();
      await prepareDatabase(tmpDir);
      db = await getDatabase();
    });

    after(async function () {
      env?.restore();
    });

    beforeEach(function () {
      sandbox = Sinon.createSandbox();
    });

    afterEach(function () {
      sandbox.restore();
    });

    describe('Special User Ids', function () {
      const ANONYMOUS_USER_ID = 6;
      const PREVIEWER_USER_ID = 7;
      const EVERYONE_USER_ID = 8;
      const SUPPORT_USER_ID = 5;
      it('getAnonymousUserId() should retrieve anonymous user id', function () {
        assert.strictEqual(db.getAnonymousUserId(), ANONYMOUS_USER_ID);
      });

      it('getPreviewerUserId() should retrieve previewer user id', function () {
        assert.strictEqual(db.getPreviewerUserId(), PREVIEWER_USER_ID);
      });

      it("getEveryoneUserId() should retrieve 'everyone' user id", function () {
        assert.strictEqual(db.getEveryoneUserId(), EVERYONE_USER_ID);
      });

      it("getSupportUserId() should retrieve 'support' user id", function () {
        assert.strictEqual(db.getSupportUserId(), SUPPORT_USER_ID);
      });

      describe('Without special id initialization', function () {
        it('should throw an error', async function () {
          await withDataBase('without-special-ids', async function (localDb) {
            assert.throws(() => localDb.getAnonymousUserId(), "'Anonymous' user not available");
            assert.throws(() => localDb.getPreviewerUserId(), "'Previewer' user not available");
            assert.throws(() => localDb.getEveryoneUserId(), "'Everyone' user not available");
            assert.throws(() => localDb.getSupportUserId(), "'Support' user not available");
          });
        });
      });
    });

    describe('getUserByKey()', function () {
      it('should return the user given their API Key', async function () {
        const user = await db.getUserByKey('api_key_for_chimpy');

        assert.strictEqual(user?.name, 'Chimpy', 'should retrieve Chimpy by their API key');
        assert.strictEqual(user?.logins?.[0].email, 'chimpy@getgrist.com');
      });

      it('should return undefined if no user matches the API key', async function () {
        const user = await db.getUserByKey('non-existing API key');

        assert.strictEqual(user, undefined);
      });
    });

    describe('getUser()', async function () {
      it('should retrieve a user by their ID', async function () {
        const user = await db.getUser(db.getSupportUserId());
        assertExists(user, 'Should have returned a user');
        assert.strictEqual(user.name, 'Support');
        assert.strictEqual(user.loginEmail, SUPPORT_EMAIL);
        assert.notExists(user.prefs, "should not have retrieved user's prefs");
      });

      it('should retrieve a user along with their prefs with `includePrefs` set to true', async function () {
        const expectedUser = await createUniqueUser('getuser-userwithprefs');
        const user = await db.getUser(expectedUser.id, {includePrefs: true});
        assertExists(user, "Should have retrieved the user");
        assertExists(user.loginEmail);
        assert.strictEqual(user.loginEmail, expectedUser.loginEmail);
        assert.isTrue(Array.isArray(user.prefs), "should not have retrieved user's prefs");
        assert.deepEqual(user.prefs, [{
          userId: expectedUser.id,
          orgId: expectedUser.personalOrg.id,
          prefs: { showGristTour: true } as any
        }]);
      });

      it('should return undefined when the id is not found', async function () {
        assert.isUndefined(await db.getUser(NON_EXISTING_USER_ID));
      });
    });

    describe('getFullUser()', function () {
      it('should return the support user', async function () {
        const supportId = db.getSupportUserId();

        const user = await db.getFullUser(supportId);

        const expectedResult: FullUser = {
          isSupport: true,
          email: SUPPORT_EMAIL,
          id: supportId,
          name: 'Support'
        };
        assert.deepInclude(user, expectedResult);
        assert.notOk(user.anonymous, 'anonymous property should be falsy');
      });

      it('should return the anonymous user', async function () {
        const anonId = db.getAnonymousUserId();

        const user = await db.getFullUser(anonId);

        const expectedResult: FullUser = {
          anonymous: true,
          email: ANONYMOUS_USER_EMAIL,
          id: anonId,
          name: 'Anonymous',
        };
        assert.deepInclude(user, expectedResult);
        assert.notOk(user.isSupport, 'support property should be falsy');
      });

      it('should reject when user is not found', async function () {
        await assert.isRejected(db.getFullUser(NON_EXISTING_USER_ID), "unable to find user");
      });
    });

    describe('makeFullUser()', function () {
      const someUserDisplayEmail = 'SomeUser@getgrist.com';
      const normalizedSomeUserEmail = 'someuser@getgrist.com';
      const someUserLocale = 'en-US';
      const SOME_USER_ID = 42;
      const prefWithOrg: Pref = {
        prefs: {placeholder: 'pref-with-org'},
        orgId: 43,
        user: new User(),
        userId: SOME_USER_ID,
      };
      const prefWithoutOrg: Pref = {
        prefs: {placeholder: 'pref-without-org'},
        orgId: null,
        user: new User(),
        userId: SOME_USER_ID
      };


      function makeSomeUser() {
        return User.create({
          id: SOME_USER_ID,
          ref: 'some ref',
          name: 'some user',
          picture: 'https://grist.com/mypic',
          options: {
            locale: someUserLocale
          },
          logins: [
            Login.create({
              userId: SOME_USER_ID,
              email: normalizedSomeUserEmail,
              displayEmail: someUserDisplayEmail,
            }),
          ],
          prefs: [
            prefWithOrg,
            prefWithoutOrg
          ]
        });
      }

      it('creates a FullUser from a User entity', function () {
        const input = makeSomeUser();

        const fullUser = db.makeFullUser(input);

        assert.deepEqual(fullUser, {
          id: SOME_USER_ID,
          email: someUserDisplayEmail,
          loginEmail: normalizedSomeUserEmail,
          name: input.name,
          picture: input.picture,
          ref: input.ref,
          locale: someUserLocale,
          prefs: prefWithoutOrg.prefs
        });
      });

      it('sets `anonymous` property to true for anon@getgrist.com', function () {
        const anon = db.getAnonymousUser();

        const fullUser = db.makeFullUser(anon);

        assert.isTrue(fullUser.anonymous, "`anonymous` property should be set to true");
        assert.notOk(fullUser.isSupport, "`isSupport` should be falsy");
      });

      it('sets `isSupport` property to true for support account', async function () {
        const support = await db.getUser(db.getSupportUserId());

        const fullUser = db.makeFullUser(support!);

        assert.isTrue(fullUser.isSupport, "`isSupport` property should be set to true");
        assert.notOk(fullUser.anonymous, "`anonymouse` should be falsy");
      });

      it('should throw when no displayEmail exist for this user', function () {
        const input = makeSomeUser();
        input.logins[0].displayEmail = '';

        assert.throws(() => db.makeFullUser(input), "unable to find mandatory user email");

        input.logins = [];
        assert.throws(() => db.makeFullUser(input), "unable to find mandatory user email");
      });
    });

    describe('ensureExternalUser()', function () {
      let managerSaveSpy: SinonSpy;
      let userSaveSpy: SinonSpy;

      beforeEach(function () {
        managerSaveSpy = sandbox.spy(EntityManager.prototype, 'save');
        userSaveSpy = sandbox.spy(User.prototype, 'save');
      });

      async function checkUserInfo(profile: UserProfile) {
        const user = await db.getExistingUserByLogin(profile.email);
        assertExists(user, "the new user should be in database");
        assert.deepInclude(user, {
          isFirstTimeUser: false,
          name: profile.name,
          picture: profile.picture
        });
        assert.exists(user.logins?.[0]);
        assert.deepInclude(user.logins[0], {
          email: profile.email.toLowerCase(),
          displayEmail: profile.email
        });
        return user;
      }

      it('should not do anything if the user already exists and is up to date', async function () {
        await db.ensureExternalUser({
          name: 'Chimpy',
          email: 'chimpy@getgrist.com',
        });

        assert.isFalse(userSaveSpy.called, 'user.save() should not have been called');
        assert.isFalse(managerSaveSpy.called, 'manager.save() should not have been called');
      });

      it('should save an unknown user', async function () {
        const profile = makeProfile('ensureExternalUser-saves-an-unknown-user');
        await db.ensureExternalUser(profile);
        assert.isTrue(userSaveSpy.called, 'user.save() should have been called');
        assert.isTrue(managerSaveSpy.called, 'manager.save() should have been called');

        await checkUserInfo(profile);
      });

      it('should update a user if they already exist in database', async function () {
        const oldProfile = makeProfile('ensureexternaluser-updates-an-existing-user_old');

        await db.ensureExternalUser(oldProfile);

        let oldUser = await db.getExistingUserByLogin(oldProfile.email);
        assertExists(oldUser);

        const newProfile = {
          ...makeProfile('ensureexternaluser-updates-an-existing-user_new'),
          connectId: oldProfile.connectId,
        };

        await db.ensureExternalUser(newProfile);

        oldUser = await db.getExistingUserByLogin(oldProfile.email);
        assert.notExists(oldUser, 'we should not retrieve the user given their old email address');

        await checkUserInfo(newProfile);
      });

      it('should normalize email address', async function() {
        const profile = makeProfile('ENSUREEXTERNALUSER-NORMALIZES-email-address');

        await db.ensureExternalUser(profile);

        const user = await checkUserInfo(profile);
        assert.equal(user.logins[0].email, profile.email.toLowerCase(), 'the email should be lowercase');
        assert.equal(user.logins[0].displayEmail, profile.email, 'the display email should keep the original case');
      });
    });

    describe('updateUser()', function () {
      let emitSpy: SinonSpy;

      before(function () {
        emitSpy = Sinon.spy();
        db.on('firstLogin', emitSpy);
      });

      after(function () {
        db.off('firstLogin', emitSpy);
      });

      afterEach(function () {
        emitSpy.resetHistory();
      });

      function checkNoEventEmitted() {
        assert.equal(emitSpy.callCount, 0, 'No event should have been emitted');
      }

      it('should reject when user is not found', async function () {
        disableLoggingLevel('debug');

        const promise = db.updateUser(NON_EXISTING_USER_ID, {name: 'foobar'});

        await assert.isRejected(promise, 'unable to find user');
        checkNoEventEmitted();
      });

      it('should update a user name', async function () {
        const emailLocalPart = 'updateUser-should-update-user-name';
        const createdUser = await createUniqueUser(emailLocalPart);
        assert.equal(createdUser.name, '');
        const userName = 'user name';

        await db.updateUser(createdUser.id, {name: userName});

        checkNoEventEmitted();
        const updatedUser = await getOrCreateUser(emailLocalPart);
        assert.equal(updatedUser.name, userName);
      });

      it('should not emit any event when isFirstTimeUser value has not changed', async function () {
        const localPart = 'updateuser-should-not-emit-when-isfirsttimeuser-not-changed';
        const createdUser = await createUniqueUser(localPart);
        assert.equal(createdUser.isFirstTimeUser, true);

        await db.updateUser(createdUser.id, {isFirstTimeUser: true});

        checkNoEventEmitted();
      });

      it('should emit "firstLogin" event when isFirstTimeUser value has been toggled to false', async function () {
        const localPart = 'updateuser-emits-firstlogin';
        const userName = 'user name';
        const newUser = await createUniqueUser(localPart);
        assert.equal(newUser.isFirstTimeUser, true);

        await db.updateUser(newUser.id, {isFirstTimeUser: false, name: userName});
        assert.equal(emitSpy.callCount, 1, '"firstLogin" event should have been emitted');

        const fullUserFromEvent = emitSpy.firstCall.args[0];
        assertExists(fullUserFromEvent, 'a FullUser object should be passed with the "firstLogin" event');
        assert.equal(fullUserFromEvent.name, userName);
        assert.equal(fullUserFromEvent.email, makeEmail(localPart));

        const updatedUser = await getOrCreateUser(localPart);
        assert.equal(updatedUser.isFirstTimeUser, false, 'the user is not considered as being first time user anymore');
      });
    });

    describe('updateUserOptions()', function () {
      it('should reject when user is not found', async function () {
        disableLoggingLevel('debug');

        const promise = db.updateUserOptions(NON_EXISTING_USER_ID, {});

        await assert.isRejected(promise, 'unable to find user');
      });

      it('should update user options', async function () {
        const localPart = 'updateuseroptions-updates-user-options';
        const createdUser = await createUniqueUser(localPart);

        assert.notExists(createdUser.options);

        const options: UserOptions = {locale: 'fr', authSubject: 'subject', isConsultant: true, allowGoogleLogin: true};
        await db.updateUserOptions(createdUser.id, options);

        const updatedUser = await getOrCreateUser(localPart);
        assertExists(updatedUser.options);
        assert.deepEqual(updatedUser.options, options);
      });
    });

    describe('getExistingUserByLogin()', function () {
      it('should return an existing user', async function () {
        const retrievedUser = await db.getExistingUserByLogin(PREVIEWER_EMAIL);
        assertExists(retrievedUser);

        assert.equal(retrievedUser.id, db.getPreviewerUserId());
        assert.equal(retrievedUser.name, 'Preview');
      });

      it('should normalize the passed user email', async function () {
        const retrievedUser = await db.getExistingUserByLogin(PREVIEWER_EMAIL.toUpperCase());

        assertExists(retrievedUser);
      });

      it('should return undefined when the user is not found', async function () {
        const nonExistingEmail = 'i-dont-exist@getgrist.com';

        const retrievedUser = await db.getExistingUserByLogin(nonExistingEmail);

        assert.isUndefined(retrievedUser);
      });
    });

    describe('getUserByLogin()', function () {
      it('should create a user when none exist with the corresponding email', async function () {
        const localPart = ensureUnique('getuserbylogin-creates-user-when-not-already-exists');
        const email = makeEmail(localPart);
        sandbox.useFakeTimers(42_000);
        assert.notExists(await db.getExistingUserByLogin(email));

        const user = await db.getUserByLogin(makeEmail(localPart.toUpperCase()));

        assert.isTrue(user.isFirstTimeUser, 'should be marked as first time user');
        assert.equal(user.loginEmail, email);
        assert.equal(user.logins[0].displayEmail, makeEmail(localPart.toUpperCase()));
        assert.equal(user.name, '');
        // FIXME: why is user.lastConnectionAt actually a string and not a Date?
        // FIXME: is it consistent that user.lastConnectionAt updated here and not firstLoginAt?
        assert.equal(String(user.lastConnectionAt), '1970-01-01 00:00:42.000');
      });

      it('should create a personnal organization for the new user', async function () {
        const localPart = ensureUnique('getuserbylogin-creates-personnal-org');

        const user = await db.getUserByLogin(makeEmail(localPart));

        const org = await getPersonalOrg(user);
        assertExists(org.data, 'should have retrieved personnal org data');
        assert.equal(org.data.name, 'Personal');
      });

      it('should not create organizations for non-login emails', async function () {
        const user = await db.getUserByLogin(EVERYONE_EMAIL);
        assert.notExists(user.personalOrg);
      });

      it('should not update user information when no profile is passed', async function () {
        const localPart = ensureUnique('getuserbylogin-does-not-update-without-profile');

        const userFirstCall = await db.getUserByLogin(makeEmail(localPart));
        const userSecondCall = await db.getUserByLogin(makeEmail(localPart));

        assert.deepEqual(userFirstCall, userSecondCall);
      });

      // FIXME: why using Sinon.useFakeTimers() makes user.lastConnectionAt a string instead of a Date
      it.skip('should update lastConnectionAt only for different days', async function () {
        const fakeTimer = sandbox.useFakeTimers(0);
        const localPart = ensureUnique('getuserbylogin-updates-last_connection_at-for-different-days');
        let user = await db.getUserByLogin(makeEmail(localPart));
        const epochDateTime = '1970-01-01 00:00:00.000';
        assert.equal(String(user.lastConnectionAt), epochDateTime);

        await fakeTimer.tickAsync(42_000);
        user = await db.getUserByLogin(makeEmail(localPart));
        assert.equal(String(user.lastConnectionAt), epochDateTime);

        await fakeTimer.tickAsync('1d');
        user = await db.getUserByLogin(makeEmail(localPart));
        assert.match(String(user.lastConnectionAt), /^1970-01-02/);
      });

      describe('when passing information to update (using `profile`)', function () {
        it('should populate the firstTimeLogin and deduce the name from the email', async function () {
          sandbox.useFakeTimers(42_000);
          const localPart = ensureUnique('getuserbylogin-with-profile-populates-first_time_login-and-name');
          const user = await db.getUserByLogin(makeEmail(localPart), {
            profile: {name: '', email: makeEmail(localPart)}
          });
          assert.equal(user.name, localPart);
          // FIXME: why using Sinon.useFakeTimers() makes user.firstLoginAt a string instead of a Date
          assert.equal(String(user.firstLoginAt), '1970-01-01 00:00:42.000');
        });

        it('should populate user with any passed information', async function () {
          const localPart = ensureUnique('getuserbylogin-with-profile-populates-user-with-passed-info_OLD');
          await db.getUserByLogin(makeEmail(localPart));
          const originalNormalizedLoginEmail = makeEmail(localPart.toLowerCase());

          const profile = makeProfile(makeEmail('getuserbylogin-with-profile-populates-user-with-passed-info_NEW'));
          const userOptions: UserOptions = {authSubject: 'my-auth-subject'};

          const updatedUser = await db.getUserByLogin(makeEmail(localPart), { profile, userOptions });
          assert.deepInclude(updatedUser, {
            name: profile.name,
            connectId: profile.connectId,
            picture: profile.picture,
          });
          assert.deepInclude(updatedUser.logins[0], {
            displayEmail: profile.email,
            email: originalNormalizedLoginEmail,
          });
          assert.deepInclude(updatedUser.options, {
            authSubject: userOptions.authSubject,
          });
        });
      });
    });

    describe('getUserByLoginWithRetry()', async function () {
      async function ensureGetUserByLoginWithRetryWorks(localPart: string) {
        const email = makeEmail(localPart);
        const user = await db.getUserByLoginWithRetry(email);
        assertExists(user);
        assert.equal(user.loginEmail, email);
      }

      function makeQueryFailedError() {
        const error = new Error() as any;
        error.name = 'QueryFailedError';
        error.detail = 'Key (email)=whatever@getgrist.com already exists';
        return error;
      }

      it('should work just like getUserByLogin', async function () {
        await ensureGetUserByLoginWithRetryWorks( ensureUnique('getuserbyloginwithretry-works-like-getuserbylogin'));
      });

      it('should make a second attempt on special error', async function () {
        sandbox.stub(UsersManager.prototype, 'getUserByLogin')
          .onFirstCall().throws(makeQueryFailedError())
          .callThrough();
        await ensureGetUserByLoginWithRetryWorks('getuserbyloginwithretry-makes-a-single-retry');
      });

      it('should reject after 2 attempts', async function () {
        const secondError = makeQueryFailedError();
        sandbox.stub(UsersManager.prototype, 'getUserByLogin')
          .onFirstCall().throws(makeQueryFailedError())
          .onSecondCall().throws(secondError)
          .callThrough();

        const email = makeEmail(ensureUnique('getuserbyloginwithretry-rejects-after-2-attempts'));
        const promise = db.getUserByLoginWithRetry(email);
        await assert.isRejected(promise);
        await promise.catch(err => assert.equal(err, secondError));
      });

      it('should reject immediately if the error is not a QueryFailedError', async function () {
        const errorMsg = 'my error';
        sandbox.stub(UsersManager.prototype, 'getUserByLogin')
          .onFirstCall().rejects(new Error(errorMsg))
          .callThrough();

        const email = makeEmail(ensureUnique('getuserbyloginwithretry-rejects-immediately-when-not-queryfailederror'));
        const promise = db.getUserByLoginWithRetry(email);
        await assert.isRejected(promise, errorMsg);
      });
    });

    describe('deleteUser()', function () {
      function userHasPrefs(userId: number, manager: EntityManager) {
        return manager.exists(Pref, { where: { userId: userId }});
      }

      function userHasGroupUsers(userId: number, manager: EntityManager) {
        return manager.exists('group_users', { where: {user_id: userId} });
      }

      async function assertUserStillExistsInDb(userId: number) {
        assert.exists(await db.getUser(userId));
      }

      it('should refuse to delete the account of someone else', async function () {
        const userToDelete = await createUniqueUser('deleteuser-refuses-for-someone-else');

        const promise = db.deleteUser({userId: 2}, userToDelete.id);

        await assert.isRejected(promise, 'not permitted to delete this user');
        await assertUserStillExistsInDb(userToDelete.id);
      });

      it('should refuse to delete a non existing account', async function () {
        disableLoggingLevel('debug');

        const promise = db.deleteUser({userId: NON_EXISTING_USER_ID}, NON_EXISTING_USER_ID);

        await assert.isRejected(promise, 'user not found');
      });

      it('should refuse to delete the account if the passed name is not matching', async function () {
        disableLoggingLevel('debug');
        const localPart = 'deleteuser-refuses-if-name-not-matching';

        const userToDelete = await createUniqueUser(localPart, {
          profile: {
            name: 'someone to delete',
            email: makeEmail(localPart),
          }
        });

        const promise = db.deleteUser({userId: userToDelete.id}, userToDelete.id, 'wrong name');

        await assert.isRejected(promise);
        await promise.catch(e => assert.match(e.message, /user name did not match/));
        await assertUserStillExistsInDb(userToDelete.id);
      });

      it('should remove the user and cleanup their info and personal organization', async function () {
        const localPart = 'deleteuser-removes-user-and-cleanups-info';
        const userToDelete = await createUniqueUser(localPart, {
          profile: {
            name: 'someone to delete',
            email: makeEmail(localPart),
          }
        });

        assertExists(await getPersonalOrg(userToDelete));

        await db.connection.transaction(async (manager) => {
          assert.isTrue(await userHasGroupUsers(userToDelete.id, manager));
          assert.isTrue(await userHasPrefs(userToDelete.id, manager));
        });

        await db.deleteUser({userId: userToDelete.id}, userToDelete.id);

        assert.notExists(await db.getUser(userToDelete.id));
        assert.deepEqual(await getPersonalOrg(userToDelete), { errMessage: 'organization not found', status: 404 });

        await db.connection.transaction(async (manager) => {
          assert.isFalse(await userHasGroupUsers(userToDelete.id, manager));
          assert.isFalse(await userHasPrefs(userToDelete.id, manager));
        });
      });

      it("should remove the user when passed name corresponds to the user's name", async function () {
        const userName = 'someone to delete';
        const localPart = 'deleteuser-removes-user-when-name-matches';
        const userToDelete = await createUniqueUser(localPart, {
          profile: {
            name: userName,
            email: makeEmail(localPart),
          }
        });

        const promise = db.deleteUser({userId: userToDelete.id}, userToDelete.id, userName);

        await assert.isFulfilled(promise);
      });
    });

    describe('initializeSpecialIds()', function () {
      it('should initialize special ids', async function () {
        return withDataBase('test-special-ids', async (localDb) => {
          const specialAccounts = [
            {name: "Support", email: SUPPORT_EMAIL},
            {name: "Anonymous", email: ANONYMOUS_USER_EMAIL},
            {name: "Preview", email: PREVIEWER_EMAIL},
            {name: "Everyone", email: EVERYONE_EMAIL}
          ];
          for (const {email} of specialAccounts) {
            assert.notExists(await localDb.getExistingUserByLogin(email));
          }

          await localDb.initializeSpecialIds();

          for (const {name, email} of specialAccounts) {
            const res = await localDb.getExistingUserByLogin(email);
            assertExists(res);
            assert.equal(res.name, name);
          }
        });
      });
    });

    describe('completeProfiles()', function () {
      it('should return an empty array if no profiles are provided', async function () {
        const res = await db.completeProfiles([]);
        assert.deepEqual(res, []);
      });

      it("should complete a single user profile with looking by normalized address", async function () {
        const localPart = ensureUnique('completeprofiles-with-single-profile');
        const email = makeEmail(localPart);
        const emailUpperCase = email.toUpperCase();
        const profile = {
          name: 'completeprofiles-with-single-profile-username',
          email: makeEmail(localPart),
          picture: 'https://mypic.com/me.png',
        };
        const someLocale = 'fr-FR';
        const userCreated = await getOrCreateUser(localPart, { profile });
        await db.updateUserOptions(userCreated.id, {locale: someLocale});

        const res = await db.completeProfiles([{name: 'whatever', email: emailUpperCase}]);

        assert.deepEqual(res, [{
          ...profile,
          id: userCreated.id,
          locale: someLocale,
          anonymous: false
        }]);
      });

      it('should complete several user profiles', async function () {
        const localPartPrefix = ensureUnique('completeprofiles-with-several-profiles');
        const seq = Array(10).fill(null).map((_, i) => i+1);
        const localParts = seq.map(i => `${localPartPrefix}_${i}`);
        const usersCreated = await Promise.all(
          localParts.map(localPart => getOrCreateUser(localPart))
        );

        const res = await db.completeProfiles(
          localParts.map(
            localPart => ({name: 'whatever', email: makeEmail(localPart)})
          )
        );
        assert.lengthOf(res, localParts.length);
        for (const [index, localPart] of localParts.entries()) {
          assert.deepInclude(res[index], {
            id: usersCreated[index].id,
            email: makeEmail(localPart),
          });
        }
      });
    });
  });
});