/* jshint globalstrict:true, strict:true, maxlen: 5000 */
/* global describe, before, after, it, require, arangodb */

// //////////////////////////////////////////////////////////////////////////////
// / @brief tests for user access rights
// /
// / @file
// /
// / DISCLAIMER
// /
// / Copyright 2017 ArangoDB GmbH, Cologne, Germany
// /
// / Licensed under the Apache License, Version 2.0 (the "License");
// / you may not use this file except in compliance with the License.
// / You may obtain a copy of the License at
// /
// /     http://www.apache.org/licenses/LICENSE-2.0
// /
// / Unless required by applicable law or agreed to in writing, software
// / distributed under the License is distributed on an "AS IS" BASIS,
// / WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// / See the License for the specific language governing permissions and
// / limitations under the License.
// /
// / Copyright holder is ArangoDB GmbH, Cologne, Germany
// /
// / @author Michael Hackstein
// / @author Mark Vollmary
// / @author Copyright 2017, ArangoDB GmbH, Cologne, Germany
// //////////////////////////////////////////////////////////////////////////////

'use strict';

const expect = require('chai').expect;
const users = require('@arangodb/users');
const helper = require('@arangodb/user-helper');
const namePrefix = helper.namePrefix;
const rightLevels = helper.rightLevels;
const errors = require('@arangodb').errors;

const userSet = helper.userSet;
const systemLevel = helper.systemLevel;
const dbLevel = helper.dbLevel;
const colLevel = helper.colLevel;
const testUser = `${namePrefix}TestUser`;

const arango = require('internal').arango;
const db = require('internal').db;
for (let l of rightLevels) {
  systemLevel[l] = new Set();
  dbLevel[l] = new Set();
  colLevel[l] = new Set();
}

helper.removeAllUsers();
helper.generateAllUsers();

describe('User Rights Management', () => {
  it('should test rights for', () => {
    expect(userSet.size).to.be.greaterThan(0); 
    for (let name of userSet) {
      let canUse = false;
      try {
        helper.switchUser(name);
        canUse = true;
      } catch (e) {
        canUse = false;
      }

      if (canUse) {
        describe(`user ${name}`, () => {
          before(() => {
            // What are defaults if unchanged?
            helper.switchUser(name);
          });

          describe('administrate on server level', () => {
            const rootTestUser = (switchBack = true) => {
              helper.switchUser('root');
              try {
                const u = users.document(testUser);
                if (switchBack) {
                  helper.switchUser(name);
                }
                return u !== undefined;
              } catch (e) {
                if (switchBack) {
                  helper.switchUser(name);
                }
                return false;
              }
            };

            const rootDropUser = () => {
              if (rootTestUser(false)) {
                users.remove(testUser);
              }
              helper.switchUser(name);
            };

            before(() => {
              db._useDatabase('_system');
              rootDropUser();
            });

            after(() => {
              rootDropUser();
            });

            it('create a user', () => {
              if (systemLevel['rw'].has(name)) {
                // User needs rw on _system
                users.save('UnitTestTestUser', '', true);
                expect(rootTestUser()).to.equal(true, 'User creation reported success, but User was not found afterwards.');
              } else {
                try {
                  users.save('UnitTestTestUser', '', true);
                } catch (e) {
                  expect(e.errorNum).to.equal(errors.ERROR_FORBIDDEN.code);
                }
                expect(rootTestUser()).to.equal(false, `${name} was able to create a user with insufficent rights`);
              }
            });
          });
        });
      }
    }
  });
});