'use strict';
// Sets up a Parse API server for testing.
jasmine.DEFAULT_TIMEOUT_INTERVAL =
  process.env.PARSE_SERVER_TEST_TIMEOUT || 5000;

global.on_db = (db, callback, elseCallback) => {
  if (process.env.PARSE_SERVER_TEST_DB == db) {
    return callback();
  } else if (!process.env.PARSE_SERVER_TEST_DB && db == 'mongo') {
    return callback();
  }
  if (elseCallback) {
    return elseCallback();
  }
};

if (global._babelPolyfill) {
  console.error('We should not use polyfilled tests');
  process.exit(1);
}

const cache = require('../lib/cache').default;
const ParseServer = require('../lib/index').ParseServer;
const path = require('path');
const TestUtils = require('../lib/TestUtils');
const GridFSBucketAdapter = require('../lib/Adapters/Files/GridFSBucketAdapter')
  .GridFSBucketAdapter;
const FSAdapter = require('@parse/fs-files-adapter');
const PostgresStorageAdapter = require('../lib/Adapters/Storage/Postgres/PostgresStorageAdapter')
  .default;
const MongoStorageAdapter = require('../lib/Adapters/Storage/Mongo/MongoStorageAdapter')
  .default;
const RedisCacheAdapter = require('../lib/Adapters/Cache/RedisCacheAdapter')
  .default;

const mongoURI =
  'mongodb://localhost:27017/parseServerMongoAdapterTestDatabase';
const postgresURI =
  'postgres://localhost:5432/parse_server_postgres_adapter_test_database';
let databaseAdapter;
// need to bind for mocking mocha

if (process.env.PARSE_SERVER_TEST_DB === 'postgres') {
  databaseAdapter = new PostgresStorageAdapter({
    uri: process.env.PARSE_SERVER_TEST_DATABASE_URI || postgresURI,
    collectionPrefix: 'test_',
  });
} else {
  databaseAdapter = new MongoStorageAdapter({
    uri: mongoURI,
    collectionPrefix: 'test_',
  });
}

const port = 8378;

let filesAdapter;

on_db(
  'mongo',
  () => {
    filesAdapter = new GridFSBucketAdapter(mongoURI);
  },
  () => {
    filesAdapter = new FSAdapter();
  }
);

let logLevel;
let silent = true;
if (process.env.VERBOSE) {
  silent = false;
  logLevel = 'verbose';
}
if (process.env.PARSE_SERVER_LOG_LEVEL) {
  silent = false;
  logLevel = process.env.PARSE_SERVER_LOG_LEVEL;
}
// Default server configuration for tests.
const defaultConfiguration = {
  filesAdapter,
  serverURL: 'http://localhost:' + port + '/1',
  databaseAdapter,
  appId: 'test',
  javascriptKey: 'test',
  dotNetKey: 'windows',
  clientKey: 'client',
  restAPIKey: 'rest',
  webhookKey: 'hook',
  masterKey: 'test',
  readOnlyMasterKey: 'read-only-test',
  fileKey: 'test',
  silent,
  logLevel,
  push: {
    android: {
      senderId: 'yolo',
      apiKey: 'yolo',
    },
  },
  auth: {
    // Override the facebook provider
    custom: mockCustom(),
    facebook: mockFacebook(),
    myoauth: {
      module: path.resolve(__dirname, 'myoauth'), // relative path as it's run from src
    },
    shortLivedAuth: mockShortLivedAuth(),
  },
};

if (process.env.PARSE_SERVER_TEST_CACHE === 'redis') {
  defaultConfiguration.cacheAdapter = new RedisCacheAdapter();
}

const openConnections = {};
// Set up a default API server for testing with default configuration.
let server;

// Allows testing specific configurations of Parse Server
const reconfigureServer = changedConfiguration => {
  return new Promise((resolve, reject) => {
    if (server) {
      return server.close(() => {
        server = undefined;
        reconfigureServer(changedConfiguration).then(resolve, reject);
      });
    }
    try {
      let parseServer = undefined;
      const newConfiguration = Object.assign(
        {},
        defaultConfiguration,
        changedConfiguration,
        {
          serverStartComplete: error => {
            if (error) {
              reject(error);
            } else {
              resolve(parseServer);
            }
          },
          mountPath: '/1',
          port,
        }
      );
      cache.clear();
      parseServer = ParseServer.start(newConfiguration);
      parseServer.app.use(require('./testing-routes').router);
      parseServer.expressApp.use('/1', err => {
        console.error(err);
        fail('should not call next');
      });
      server = parseServer.server;
      server.on('connection', connection => {
        const key = `${connection.remoteAddress}:${connection.remotePort}`;
        openConnections[key] = connection;
        connection.on('close', () => {
          delete openConnections[key];
        });
      });
    } catch (error) {
      reject(error);
    }
  });
};

// Set up a Parse client to talk to our test API server
const Parse = require('parse/node');
Parse.serverURL = 'http://localhost:' + port + '/1';

beforeEach(done => {
  try {
    Parse.User.enableUnsafeCurrentUser();
  } catch (error) {
    if (error !== 'You need to call Parse.initialize before using Parse.') {
      throw error;
    }
  }
  TestUtils.destroyAllDataPermanently(true)
    .catch(error => {
      // For tests that connect to their own mongo, there won't be any data to delete.
      if (
        error.message === 'ns not found' ||
        error.message.startsWith('connect ECONNREFUSED')
      ) {
        return;
      } else {
        fail(error);
        return;
      }
    })
    .then(reconfigureServer)
    .then(() => {
      Parse.initialize('test', 'test', 'test');
      Parse.serverURL = 'http://localhost:' + port + '/1';
      done();
    })
    .catch(done.fail);
});

afterEach(function(done) {
  const afterLogOut = () => {
    if (Object.keys(openConnections).length > 0) {
      fail(
        'There were open connections to the server left after the test finished'
      );
    }
    on_db(
      'postgres',
      () => {
        TestUtils.destroyAllDataPermanently(true).then(done, done);
      },
      done
    );
  };
  Parse.Cloud._removeAllHooks();
  databaseAdapter
    .getAllClasses()
    .then(allSchemas => {
      allSchemas.forEach(schema => {
        const className = schema.className;
        expect(className).toEqual({
          asymmetricMatch: className => {
            if (!className.startsWith('_')) {
              return true;
            } else {
              // Other system classes will break Parse.com, so make sure that we don't save anything to _SCHEMA that will
              // break it.
              return (
                [
                  '_User',
                  '_Installation',
                  '_Role',
                  '_Session',
                  '_Product',
                  '_Audience',
                ].indexOf(className) >= 0
              );
            }
          },
        });
      });
    })
    .then(() => Parse.User.logOut())
    .then(() => {}, () => {}) // swallow errors
    .then(() => {
      // Connection close events are not immediate on node 10+... wait a bit
      return new Promise(resolve => {
        setTimeout(resolve, 0);
      });
    })
    .then(afterLogOut);
});

const TestObject = Parse.Object.extend({
  className: 'TestObject',
});
const Item = Parse.Object.extend({
  className: 'Item',
});
const Container = Parse.Object.extend({
  className: 'Container',
});

// Convenience method to create a new TestObject with a callback
function create(options, callback) {
  const t = new TestObject(options);
  return t.save().then(callback);
}

function createTestUser() {
  const user = new Parse.User();
  user.set('username', 'test');
  user.set('password', 'moon-y');
  return user.signUp();
}

// Shims for compatibility with the old qunit tests.
function ok(bool, message) {
  expect(bool).toBeTruthy(message);
}
function equal(a, b, message) {
  expect(a).toEqual(b, message);
}
function strictEqual(a, b, message) {
  expect(a).toBe(b, message);
}
function notEqual(a, b, message) {
  expect(a).not.toEqual(b, message);
}

// Because node doesn't have Parse._.contains
function arrayContains(arr, item) {
  return -1 != arr.indexOf(item);
}

// Normalizes a JSON object.
function normalize(obj) {
  if (obj === null || typeof obj !== 'object') {
    return JSON.stringify(obj);
  }
  if (obj instanceof Array) {
    return '[' + obj.map(normalize).join(', ') + ']';
  }
  let answer = '{';
  for (const key of Object.keys(obj).sort()) {
    answer += key + ': ';
    answer += normalize(obj[key]);
    answer += ', ';
  }
  answer += '}';
  return answer;
}

// Asserts two json structures are equal.
function jequal(o1, o2) {
  expect(normalize(o1)).toEqual(normalize(o2));
}

function range(n) {
  const answer = [];
  for (let i = 0; i < n; i++) {
    answer.push(i);
  }
  return answer;
}

function mockCustomAuthenticator(id, password) {
  const custom = {};
  custom.validateAuthData = function(authData) {
    if (authData.id === id && authData.password.startsWith(password)) {
      return Promise.resolve();
    }
    throw new Parse.Error(Parse.Error.OBJECT_NOT_FOUND, 'not validated');
  };
  custom.validateAppId = function() {
    return Promise.resolve();
  };
  return custom;
}

function mockCustom() {
  return mockCustomAuthenticator('fastrde', 'password');
}

function mockFacebookAuthenticator(id, token) {
  const facebook = {};
  facebook.validateAuthData = function(authData) {
    if (authData.id === id && authData.access_token.startsWith(token)) {
      return Promise.resolve();
    } else {
      throw undefined;
    }
  };
  facebook.validateAppId = function(appId, authData) {
    if (authData.access_token.startsWith(token)) {
      return Promise.resolve();
    } else {
      throw undefined;
    }
  };
  return facebook;
}

function mockFacebook() {
  return mockFacebookAuthenticator('8675309', 'jenny');
}

function mockShortLivedAuth() {
  const auth = {};
  let accessToken;
  auth.setValidAccessToken = function(validAccessToken) {
    accessToken = validAccessToken;
  };
  auth.validateAuthData = function(authData) {
    if (authData.access_token == accessToken) {
      return Promise.resolve();
    } else {
      return Promise.reject('Invalid access token');
    }
  };
  auth.validateAppId = function() {
    return Promise.resolve();
  };
  return auth;
}

// This is polluting, but, it makes it way easier to directly port old tests.
global.Parse = Parse;
global.TestObject = TestObject;
global.Item = Item;
global.Container = Container;
global.create = create;
global.createTestUser = createTestUser;
global.ok = ok;
global.equal = equal;
global.strictEqual = strictEqual;
global.notEqual = notEqual;
global.arrayContains = arrayContains;
global.jequal = jequal;
global.range = range;
global.reconfigureServer = reconfigureServer;
global.defaultConfiguration = defaultConfiguration;
global.mockCustomAuthenticator = mockCustomAuthenticator;
global.mockFacebookAuthenticator = mockFacebookAuthenticator;
global.databaseAdapter = databaseAdapter;
global.jfail = function(err) {
  fail(JSON.stringify(err));
};

global.it_exclude_dbs = excluded => {
  if (excluded.indexOf(process.env.PARSE_SERVER_TEST_DB) >= 0) {
    return xit;
  } else {
    return it;
  }
};

global.it_only_db = db => {
  if (
    process.env.PARSE_SERVER_TEST_DB === db ||
    (!process.env.PARSE_SERVER_TEST_DB && db == 'mongo')
  ) {
    return it;
  } else {
    return xit;
  }
};

global.fit_exclude_dbs = excluded => {
  if (excluded.indexOf(process.env.PARSE_SERVER_TEST_DB) >= 0) {
    return xit;
  } else {
    return fit;
  }
};

global.describe_only_db = db => {
  if (process.env.PARSE_SERVER_TEST_DB == db) {
    return describe;
  } else if (!process.env.PARSE_SERVER_TEST_DB && db == 'mongo') {
    return describe;
  } else {
    return xdescribe;
  }
};

global.describe_only = validator => {
  if (validator()) {
    return describe;
  } else {
    return xdescribe;
  }
};

const libraryCache = {};
jasmine.mockLibrary = function(library, name, mock) {
  const original = require(library)[name];
  if (!libraryCache[library]) {
    libraryCache[library] = {};
  }
  require(library)[name] = mock;
  libraryCache[library][name] = original;
};

jasmine.restoreLibrary = function(library, name) {
  if (!libraryCache[library] || !libraryCache[library][name]) {
    throw 'Can not find library ' + library + ' ' + name;
  }
  require(library)[name] = libraryCache[library][name];
};