import authDataManager from '../Adapters/Auth';
import { ParseServerOptions } from '../Options';
import { loadAdapter } from '../Adapters/AdapterLoader';
import defaults from '../defaults';
import url from 'url';
// Controllers
import { LoggerController } from './LoggerController';
import { FilesController } from './FilesController';
import { HooksController } from './HooksController';
import { UserController } from './UserController';
import { CacheController } from './CacheController';
import { LiveQueryController } from './LiveQueryController';
import { AnalyticsController } from './AnalyticsController';
import { PushController } from './PushController';
import { PushQueue } from '../Push/PushQueue';
import { PushWorker } from '../Push/PushWorker';
import DatabaseController from './DatabaseController';

// Adapters
import { GridFSBucketAdapter } from '../Adapters/Files/GridFSBucketAdapter';
import { WinstonLoggerAdapter } from '../Adapters/Logger/WinstonLoggerAdapter';
import { InMemoryCacheAdapter } from '../Adapters/Cache/InMemoryCacheAdapter';
import { AnalyticsAdapter } from '../Adapters/Analytics/AnalyticsAdapter';
import MongoStorageAdapter from '../Adapters/Storage/Mongo/MongoStorageAdapter';
import PostgresStorageAdapter from '../Adapters/Storage/Postgres/PostgresStorageAdapter';
import ParsePushAdapter from '@parse/push-adapter';
import ParseGraphQLController from './ParseGraphQLController';
import SchemaCache from '../Adapters/Cache/SchemaCache';

export function getControllers(options: ParseServerOptions) {
  const loggerController = getLoggerController(options);
  const filesController = getFilesController(options);
  const userController = getUserController(options);
  const {
    pushController,
    hasPushScheduledSupport,
    hasPushSupport,
    pushControllerQueue,
    pushWorker,
  } = getPushController(options);
  const cacheController = getCacheController(options);
  const analyticsController = getAnalyticsController(options);
  const liveQueryController = getLiveQueryController(options);
  const databaseController = getDatabaseController(options);
  const hooksController = getHooksController(options, databaseController);
  const authDataManager = getAuthDataManager(options);
  const parseGraphQLController = getParseGraphQLController(options, {
    databaseController,
    cacheController,
  });
  return {
    loggerController,
    filesController,
    userController,
    pushController,
    hasPushScheduledSupport,
    hasPushSupport,
    pushWorker,
    pushControllerQueue,
    analyticsController,
    cacheController,
    parseGraphQLController,
    liveQueryController,
    databaseController,
    hooksController,
    authDataManager,
    schemaCache: SchemaCache,
  };
}

export function getLoggerController(options: ParseServerOptions): LoggerController {
  const {
    appId,
    jsonLogs,
    logsFolder,
    verbose,
    logLevel,
    maxLogFiles,
    silent,
    loggerAdapter,
  } = options;
  const loggerOptions = {
    jsonLogs,
    logsFolder,
    verbose,
    logLevel,
    silent,
    maxLogFiles,
  };
  const loggerControllerAdapter = loadAdapter(loggerAdapter, WinstonLoggerAdapter, loggerOptions);
  return new LoggerController(loggerControllerAdapter, appId, loggerOptions);
}

export function getFilesController(options: ParseServerOptions): FilesController {
  const { appId, databaseURI, filesAdapter, databaseAdapter, preserveFileName, fileKey } = options;
  if (!filesAdapter && databaseAdapter) {
    throw 'When using an explicit database adapter, you must also use an explicit filesAdapter.';
  }
  const filesControllerAdapter = loadAdapter(filesAdapter, () => {
    return new GridFSBucketAdapter(databaseURI, {}, fileKey);
  });
  return new FilesController(filesControllerAdapter, appId, {
    preserveFileName,
  });
}

export function getUserController(options: ParseServerOptions): UserController {
  const { appId, emailAdapter, verifyUserEmails } = options;
  const emailControllerAdapter = loadAdapter(emailAdapter);
  return new UserController(emailControllerAdapter, appId, {
    verifyUserEmails,
  });
}

export function getCacheController(options: ParseServerOptions): CacheController {
  const { appId, cacheAdapter, cacheTTL, cacheMaxSize } = options;
  const cacheControllerAdapter = loadAdapter(cacheAdapter, InMemoryCacheAdapter, {
    appId: appId,
    ttl: cacheTTL,
    maxSize: cacheMaxSize,
  });
  return new CacheController(cacheControllerAdapter, appId);
}

export function getParseGraphQLController(
  options: ParseServerOptions,
  controllerDeps
): ParseGraphQLController {
  return new ParseGraphQLController({
    mountGraphQL: options.mountGraphQL,
    ...controllerDeps,
  });
}

export function getAnalyticsController(options: ParseServerOptions): AnalyticsController {
  const { analyticsAdapter } = options;
  const analyticsControllerAdapter = loadAdapter(analyticsAdapter, AnalyticsAdapter);
  return new AnalyticsController(analyticsControllerAdapter);
}

export function getLiveQueryController(options: ParseServerOptions): LiveQueryController {
  return new LiveQueryController(options.liveQuery);
}

export function getDatabaseController(options: ParseServerOptions): DatabaseController {
  const { databaseURI, collectionPrefix, databaseOptions } = options;
  let { databaseAdapter } = options;
  if (
    (databaseOptions ||
      (databaseURI && databaseURI !== defaults.databaseURI) ||
      collectionPrefix !== defaults.collectionPrefix) &&
    databaseAdapter
  ) {
    throw 'You cannot specify both a databaseAdapter and a databaseURI/databaseOptions/collectionPrefix.';
  } else if (!databaseAdapter) {
    databaseAdapter = getDatabaseAdapter(databaseURI, collectionPrefix, databaseOptions);
  } else {
    databaseAdapter = loadAdapter(databaseAdapter);
  }
  return new DatabaseController(databaseAdapter, options);
}

export function getHooksController(
  options: ParseServerOptions,
  databaseController: DatabaseController
): HooksController {
  const { appId, webhookKey } = options;
  return new HooksController(appId, databaseController, webhookKey);
}

interface PushControlling {
  pushController: PushController;
  hasPushScheduledSupport: boolean;
  pushControllerQueue: PushQueue;
  pushWorker: PushWorker;
}

export function getPushController(options: ParseServerOptions): PushControlling {
  const { scheduledPush, push } = options;

  const pushOptions = Object.assign({}, push);
  const pushQueueOptions = pushOptions.queueOptions || {};
  if (pushOptions.queueOptions) {
    delete pushOptions.queueOptions;
  }

  // Pass the push options too as it works with the default
  const pushAdapter = loadAdapter(
    pushOptions && pushOptions.adapter,
    ParsePushAdapter,
    pushOptions
  );
  // We pass the options and the base class for the adatper,
  // Note that passing an instance would work too
  const pushController = new PushController();
  const hasPushSupport = !!(pushAdapter && push);
  const hasPushScheduledSupport = hasPushSupport && scheduledPush === true;

  const { disablePushWorker } = pushQueueOptions;

  const pushControllerQueue = new PushQueue(pushQueueOptions);
  let pushWorker;
  if (!disablePushWorker) {
    pushWorker = new PushWorker(pushAdapter, pushQueueOptions);
  }
  return {
    pushController,
    hasPushSupport,
    hasPushScheduledSupport,
    pushControllerQueue,
    pushWorker,
  };
}

export function getAuthDataManager(options: ParseServerOptions) {
  const { auth, enableAnonymousUsers } = options;
  return authDataManager(auth, enableAnonymousUsers);
}

export function getDatabaseAdapter(databaseURI, collectionPrefix, databaseOptions) {
  let protocol;
  try {
    const parsedURI = url.parse(databaseURI);
    protocol = parsedURI.protocol ? parsedURI.protocol.toLowerCase() : null;
  } catch (e) {
    /* */
  }
  switch (protocol) {
    case 'postgres:':
      return new PostgresStorageAdapter({
        uri: databaseURI,
        collectionPrefix,
        databaseOptions,
      });
    default:
      return new MongoStorageAdapter({
        uri: databaseURI,
        collectionPrefix,
        mongoOptions: databaseOptions,
      });
  }
}