// tslint:disable no-default-export no-unnecessary-local-variable

import { ipcRenderer } from 'electron';

import {
  cloneDeep,
  compact,
  fromPairs,
  get,
  groupBy,
  isFunction,
  isObject,
  last,
  map,
  set,
} from 'lodash';

import { arrayBufferToBase64, base64ToArrayBuffer } from '../Crypto';
import { CURRENT_SCHEMA_VERSION } from '../../js/modules/types/message';
import { createBatcher } from '../util/batcher';

import {
  ConversationModelCollectionType,
  ConversationModelType,
  MessageModelCollectionType,
  MessageModelType,
} from '../model-types.d';

import {
  AttachmentDownloadJobType,
  ClientInterface,
  ClientJobType,
  ConversationType,
  IdentityKeyType,
  ItemType,
  MessageType,
  MessageTypeUnhydrated,
  PreKeyType,
  SearchResultMessageType,
  ServerInterface,
  SessionType,
  SignedPreKeyType,
  StickerPackStatusType,
  StickerPackType,
  StickerType,
  UnprocessedType,
} from './Interface';

// We listen to a lot of events on ipcRenderer, often on the same channel. This prevents
//   any warnings that might be sent to the console in that case.
ipcRenderer.setMaxListeners(0);

const DATABASE_UPDATE_TIMEOUT = 2 * 60 * 1000; // two minutes

const SQL_CHANNEL_KEY = 'sql-channel';
const ERASE_SQL_KEY = 'erase-sql-key';
const ERASE_ATTACHMENTS_KEY = 'erase-attachments';
const ERASE_STICKERS_KEY = 'erase-stickers';
const ERASE_TEMP_KEY = 'erase-temp';
const ERASE_DRAFTS_KEY = 'erase-drafts';
const CLEANUP_ORPHANED_ATTACHMENTS_KEY = 'cleanup-orphaned-attachments';
const ENSURE_FILE_PERMISSIONS = 'ensure-file-permissions';

type ClientJobUpdateType = {
  resolve: Function;
  reject: Function;
  args?: Array<any>;
};

const _jobs: { [id: string]: ClientJobType } = Object.create(null);
const _DEBUG = false;
let _jobCounter = 0;
let _shuttingDown = false;
let _shutdownCallback: Function | null = null;
let _shutdownPromise: Promise<any> | null = null;

// Because we can't force this module to conform to an interface, we narrow our exports
//   to this one default export, which does conform to the interface.
// Note: In Javascript, you need to access the .default property when requiring it
// https://github.com/microsoft/TypeScript/issues/420
const dataInterface: ClientInterface = {
  close,
  removeDB,
  removeIndexedDBFiles,

  createOrUpdateIdentityKey,
  getIdentityKeyById,
  bulkAddIdentityKeys,
  removeIdentityKeyById,
  removeAllIdentityKeys,
  getAllIdentityKeys,

  createOrUpdatePreKey,
  getPreKeyById,
  bulkAddPreKeys,
  removePreKeyById,
  removeAllPreKeys,
  getAllPreKeys,

  createOrUpdateSignedPreKey,
  getSignedPreKeyById,
  getAllSignedPreKeys,
  bulkAddSignedPreKeys,
  removeSignedPreKeyById,
  removeAllSignedPreKeys,

  createOrUpdateItem,
  getItemById,
  getAllItems,
  bulkAddItems,
  removeItemById,
  removeAllItems,

  createOrUpdateSession,
  createOrUpdateSessions,
  getSessionById,
  getSessionsById,
  bulkAddSessions,
  removeSessionById,
  removeSessionsByConversation,
  removeAllSessions,
  getAllSessions,

  getConversationCount,
  saveConversation,
  saveConversations,
  getConversationById,
  updateConversation,
  updateConversations,
  removeConversation,

  eraseStorageIdFromConversations,
  getAllConversations,
  getAllConversationIds,
  getAllPrivateConversations,
  getAllGroupsInvolvingId,

  searchConversations,
  searchMessages,
  searchMessagesInConversation,

  getMessageCount,
  saveMessage,
  saveMessages,
  removeMessage,
  getUnreadByConversation,

  getMessageBySender,
  getMessageById,
  getAllMessageIds,
  getMessagesBySentAt,
  getExpiredMessages,
  getOutgoingWithoutExpiresAt,
  getNextExpiringMessage,
  getNextTapToViewMessageToAgeOut,
  getTapToViewMessagesNeedingErase,
  getOlderMessagesByConversation,
  getNewerMessagesByConversation,
  getMessageMetricsForConversation,
  migrateConversationMessages,

  getUnprocessedCount,
  getAllUnprocessed,
  getUnprocessedById,
  saveUnprocessed,
  saveUnprocesseds,
  updateUnprocessedAttempts,
  updateUnprocessedWithData,
  updateUnprocessedsWithData,
  removeUnprocessed,
  removeAllUnprocessed,

  getNextAttachmentDownloadJobs,
  saveAttachmentDownloadJob,
  resetAttachmentDownloadPending,
  setAttachmentDownloadJobPending,
  removeAttachmentDownloadJob,
  removeAllAttachmentDownloadJobs,

  getStickerCount,
  createOrUpdateStickerPack,
  updateStickerPackStatus,
  createOrUpdateSticker,
  updateStickerLastUsed,
  addStickerPackReference,
  deleteStickerPackReference,
  deleteStickerPack,
  getAllStickerPacks,
  getAllStickers,
  getRecentStickers,

  updateEmojiUsage,
  getRecentEmojis,

  removeAll,
  removeAllConfiguration,

  getMessagesNeedingUpgrade,
  getMessagesWithVisualMediaAttachments,
  getMessagesWithFileAttachments,

  // Test-only

  _getAllMessages,

  // Client-side only

  shutdown,
  removeAllMessagesInConversation,

  removeOtherData,
  cleanupOrphanedAttachments,
  ensureFilePermissions,

  // Client-side only, and test-only

  _removeConversations,
  _removeMessages,
  _cleanData,
  _jobs,
};

export default dataInterface;

const channelsAsUnknown = fromPairs(
  compact(
    map(dataInterface, (value: any) => {
      if (isFunction(value)) {
        return [value.name, makeChannel(value.name)];
      }

      return null;
    })
  )
) as any;

const channels: ServerInterface = channelsAsUnknown;

// When IPC arguments are prepared for the cross-process send, they are JSON.stringified.
//   We can't send ArrayBuffers or BigNumbers (what we get from proto library for dates),
//   We also cannot send objects with function-value keys, like what protobufjs gives us.
function _cleanData(data: any, path: string = 'root') {
  if (data === null || data === undefined) {
    window.log.warn(`_cleanData: null or undefined value at path ${path}`);

    return data;
  }

  if (
    typeof data === 'string' ||
    typeof data === 'number' ||
    typeof data === 'boolean'
  ) {
    return data;
  }

  const keys = Object.keys(data);
  const max = keys.length;
  for (let index = 0; index < max; index += 1) {
    const key = keys[index];
    const value = data[key];

    if (value === null || value === undefined) {
      continue;
    }

    if (isFunction(value)) {
      // To prepare for Electron v9 IPC, we need to take functions off of any object
      // tslint:disable-next-line no-dynamic-delete
      delete data[key];
    } else if (isFunction(value.toNumber)) {
      // tslint:disable-next-line no-dynamic-delete
      data[key] = value.toNumber();
    } else if (Array.isArray(value)) {
      data[key] = value.map((item, mapIndex) =>
        _cleanData(item, `${path}.${key}.${mapIndex}`)
      );
    } else if (isObject(value)) {
      data[key] = _cleanData(value, `${path}.${key}`);
    } else if (
      typeof value !== 'string' &&
      typeof value !== 'number' &&
      typeof value !== 'boolean'
    ) {
      window.log.info(`_cleanData: key ${key} had type ${typeof value}`);
    }
  }

  return data;
}

async function _shutdown() {
  const jobKeys = Object.keys(_jobs);
  window.log.info(
    `data.shutdown: shutdown requested. ${jobKeys.length} jobs outstanding`
  );

  if (_shutdownPromise) {
    await _shutdownPromise;

    return;
  }

  _shuttingDown = true;

  // No outstanding jobs, return immediately
  if (jobKeys.length === 0 || _DEBUG) {
    return;
  }

  // Outstanding jobs; we need to wait until the last one is done
  _shutdownPromise = new Promise((resolve, reject) => {
    _shutdownCallback = (error: Error) => {
      window.log.info('data.shutdown: process complete');
      if (error) {
        reject(error);

        return;
      }

      resolve();

      return;
    };
  });

  await _shutdownPromise;
}

function _makeJob(fnName: string) {
  if (_shuttingDown && fnName !== 'close') {
    throw new Error(
      `Rejecting SQL channel job (${fnName}); application is shutting down`
    );
  }

  _jobCounter += 1;
  const id = _jobCounter;

  if (_DEBUG) {
    window.log.info(`SQL channel job ${id} (${fnName}) started`);
  }
  _jobs[id] = {
    fnName,
    start: Date.now(),
  };

  return id;
}

function _updateJob(id: number, data: ClientJobUpdateType) {
  const { resolve, reject } = data;
  const { fnName, start } = _jobs[id];

  _jobs[id] = {
    ..._jobs[id],
    ...data,
    resolve: (value: any) => {
      _removeJob(id);
      const end = Date.now();
      const delta = end - start;
      if (delta > 10 || _DEBUG) {
        window.log.info(
          `SQL channel job ${id} (${fnName}) succeeded in ${end - start}ms`
        );
      }

      return resolve(value);
    },
    reject: (error: Error) => {
      _removeJob(id);
      const end = Date.now();
      window.log.info(
        `SQL channel job ${id} (${fnName}) failed in ${end - start}ms`
      );

      if (error && error.message && error.message.includes('SQLITE_CORRUPT')) {
        window.log.error(
          'Detected SQLITE_CORRUPT error; restarting the application immediately'
        );
        window.restart();
      }

      return reject(error);
    },
  };
}

function _removeJob(id: number) {
  if (_DEBUG) {
    _jobs[id].complete = true;

    return;
  }

  // tslint:disable-next-line no-dynamic-delete
  delete _jobs[id];

  if (_shutdownCallback) {
    const keys = Object.keys(_jobs);
    if (keys.length === 0) {
      _shutdownCallback();
    }
  }
}

function _getJob(id: number) {
  return _jobs[id];
}

ipcRenderer.on(
  `${SQL_CHANNEL_KEY}-done`,
  (_, jobId, errorForDisplay, result) => {
    const job = _getJob(jobId);
    if (!job) {
      throw new Error(
        `Received SQL channel reply to job ${jobId}, but did not have it in our registry!`
      );
    }

    const { resolve, reject, fnName } = job;

    if (!resolve || !reject) {
      throw new Error(
        `SQL channel job ${jobId} (${fnName}): didn't have a resolve or reject`
      );
    }

    if (errorForDisplay) {
      return reject(
        new Error(
          `Error received from SQL channel job ${jobId} (${fnName}): ${errorForDisplay}`
        )
      );
    }

    return resolve(result);
  }
);

function makeChannel(fnName: string) {
  return async (...args: Array<any>) => {
    const jobId = _makeJob(fnName);

    return new Promise((resolve, reject) => {
      try {
        ipcRenderer.send(SQL_CHANNEL_KEY, jobId, fnName, ...args);

        _updateJob(jobId, {
          resolve,
          reject,
          args: _DEBUG ? args : undefined,
        });

        setTimeout(() => {
          reject(new Error(`SQL channel job ${jobId} (${fnName}) timed out`));
        }, DATABASE_UPDATE_TIMEOUT);
      } catch (error) {
        _removeJob(jobId);

        reject(error);
      }
    });
  };
}

function keysToArrayBuffer(keys: Array<string>, data: any) {
  const updated = cloneDeep(data);

  const max = keys.length;
  for (let i = 0; i < max; i += 1) {
    const key = keys[i];
    const value = get(data, key);

    if (value) {
      set(updated, key, base64ToArrayBuffer(value));
    }
  }

  return updated;
}

function keysFromArrayBuffer(keys: Array<string>, data: any) {
  const updated = cloneDeep(data);

  const max = keys.length;
  for (let i = 0; i < max; i += 1) {
    const key = keys[i];
    const value = get(data, key);

    if (value) {
      set(updated, key, arrayBufferToBase64(value));
    }
  }

  return updated;
}

// Top-level calls

async function shutdown() {
  // Stop accepting new SQL jobs, flush outstanding queue
  await _shutdown();

  // Close database
  await close();
}

// Note: will need to restart the app after calling this, to set up afresh
async function close() {
  await channels.close();
}

// Note: will need to restart the app after calling this, to set up afresh
async function removeDB() {
  await channels.removeDB();
}

async function removeIndexedDBFiles() {
  await channels.removeIndexedDBFiles();
}

// Identity Keys

const IDENTITY_KEY_KEYS = ['publicKey'];
async function createOrUpdateIdentityKey(data: IdentityKeyType) {
  const updated = keysFromArrayBuffer(IDENTITY_KEY_KEYS, {
    ...data,
    id: window.ConversationController.getConversationId(data.id),
  });
  await channels.createOrUpdateIdentityKey(updated);
}
async function getIdentityKeyById(identifier: string) {
  const id = window.ConversationController.getConversationId(identifier);
  if (!id) {
    throw new Error('getIdentityKeyById: unable to find conversationId');
  }
  const data = await channels.getIdentityKeyById(id);

  return keysToArrayBuffer(IDENTITY_KEY_KEYS, data);
}
async function bulkAddIdentityKeys(array: Array<IdentityKeyType>) {
  const updated = map(array, data =>
    keysFromArrayBuffer(IDENTITY_KEY_KEYS, data)
  );
  await channels.bulkAddIdentityKeys(updated);
}
async function removeIdentityKeyById(identifier: string) {
  const id = window.ConversationController.getConversationId(identifier);
  if (!id) {
    throw new Error('removeIdentityKeyById: unable to find conversationId');
  }
  await channels.removeIdentityKeyById(id);
}
async function removeAllIdentityKeys() {
  await channels.removeAllIdentityKeys();
}
async function getAllIdentityKeys() {
  const keys = await channels.getAllIdentityKeys();

  return keys.map(key => keysToArrayBuffer(IDENTITY_KEY_KEYS, key));
}

// Pre Keys

async function createOrUpdatePreKey(data: PreKeyType) {
  const updated = keysFromArrayBuffer(PRE_KEY_KEYS, data);
  await channels.createOrUpdatePreKey(updated);
}
async function getPreKeyById(id: number) {
  const data = await channels.getPreKeyById(id);

  return keysToArrayBuffer(PRE_KEY_KEYS, data);
}
async function bulkAddPreKeys(array: Array<PreKeyType>) {
  const updated = map(array, data => keysFromArrayBuffer(PRE_KEY_KEYS, data));
  await channels.bulkAddPreKeys(updated);
}
async function removePreKeyById(id: number) {
  await channels.removePreKeyById(id);
}
async function removeAllPreKeys() {
  await channels.removeAllPreKeys();
}
async function getAllPreKeys() {
  const keys = await channels.getAllPreKeys();

  return keys.map(key => keysToArrayBuffer(PRE_KEY_KEYS, key));
}

// Signed Pre Keys

const PRE_KEY_KEYS = ['privateKey', 'publicKey'];
async function createOrUpdateSignedPreKey(data: SignedPreKeyType) {
  const updated = keysFromArrayBuffer(PRE_KEY_KEYS, data);
  await channels.createOrUpdateSignedPreKey(updated);
}
async function getSignedPreKeyById(id: number) {
  const data = await channels.getSignedPreKeyById(id);

  return keysToArrayBuffer(PRE_KEY_KEYS, data);
}
async function getAllSignedPreKeys() {
  const keys = await channels.getAllSignedPreKeys();

  return keys.map((key: SignedPreKeyType) =>
    keysToArrayBuffer(PRE_KEY_KEYS, key)
  );
}
async function bulkAddSignedPreKeys(array: Array<SignedPreKeyType>) {
  const updated = map(array, data => keysFromArrayBuffer(PRE_KEY_KEYS, data));
  await channels.bulkAddSignedPreKeys(updated);
}
async function removeSignedPreKeyById(id: number) {
  await channels.removeSignedPreKeyById(id);
}
async function removeAllSignedPreKeys() {
  await channels.removeAllSignedPreKeys();
}

// Items

const ITEM_KEYS: { [key: string]: Array<string> | undefined } = {
  identityKey: ['value.pubKey', 'value.privKey'],
  senderCertificate: ['value.serialized'],
  signaling_key: ['value'],
  profileKey: ['value'],
};
async function createOrUpdateItem(data: ItemType) {
  const { id } = data;
  if (!id) {
    throw new Error(
      'createOrUpdateItem: Provided data did not have a truthy id'
    );
  }

  const keys = ITEM_KEYS[id];
  const updated = Array.isArray(keys) ? keysFromArrayBuffer(keys, data) : data;

  await channels.createOrUpdateItem(updated);
}
async function getItemById(id: string) {
  const keys = ITEM_KEYS[id];
  const data = await channels.getItemById(id);

  return Array.isArray(keys) ? keysToArrayBuffer(keys, data) : data;
}
async function getAllItems() {
  const items = await channels.getAllItems();

  return map(items, item => {
    const { id } = item;
    const keys = ITEM_KEYS[id];

    return Array.isArray(keys) ? keysToArrayBuffer(keys, item) : item;
  });
}
async function bulkAddItems(array: Array<ItemType>) {
  const updated = map(array, data => {
    const { id } = data;
    const keys = ITEM_KEYS[id];

    return keys && Array.isArray(keys) ? keysFromArrayBuffer(keys, data) : data;
  });
  await channels.bulkAddItems(updated);
}
async function removeItemById(id: string) {
  await channels.removeItemById(id);
}
async function removeAllItems() {
  await channels.removeAllItems();
}

// Sessions

async function createOrUpdateSession(data: SessionType) {
  await channels.createOrUpdateSession(data);
}
async function createOrUpdateSessions(array: Array<SessionType>) {
  await channels.createOrUpdateSessions(array);
}
async function getSessionById(id: string) {
  const session = await channels.getSessionById(id);

  return session;
}
async function getSessionsById(id: string) {
  const sessions = await channels.getSessionsById(id);

  return sessions;
}
async function bulkAddSessions(array: Array<SessionType>) {
  await channels.bulkAddSessions(array);
}
async function removeSessionById(id: string) {
  await channels.removeSessionById(id);
}

async function removeSessionsByConversation(conversationId: string) {
  await channels.removeSessionsByConversation(conversationId);
}
async function removeAllSessions() {
  await channels.removeAllSessions();
}
async function getAllSessions() {
  const sessions = await channels.getAllSessions();

  return sessions;
}

// Conversation

async function getConversationCount() {
  return channels.getConversationCount();
}

async function saveConversation(data: ConversationType) {
  await channels.saveConversation(data);
}

async function saveConversations(array: Array<ConversationType>) {
  await channels.saveConversations(array);
}

async function getConversationById(
  id: string,
  { Conversation }: { Conversation: typeof ConversationModelType }
) {
  const data = await channels.getConversationById(id);

  return new Conversation(data);
}

const updateConversationBatcher = createBatcher<ConversationType>({
  wait: 500,
  maxSize: 20,
  processBatch: async (items: Array<ConversationType>) => {
    // We only care about the most recent update for each conversation
    const byId = groupBy(items, item => item.id);
    const ids = Object.keys(byId);
    const mostRecent = ids.map(id => last(byId[id]));

    await updateConversations(mostRecent);
  },
});

function updateConversation(data: ConversationType) {
  updateConversationBatcher.add(data);
}

async function updateConversations(array: Array<ConversationType>) {
  await channels.updateConversations(array);
}

async function removeConversation(
  id: string,
  { Conversation }: { Conversation: typeof ConversationModelType }
) {
  const existing = await getConversationById(id, { Conversation });

  // Note: It's important to have a fully database-hydrated model to delete here because
  //   it needs to delete all associated on-disk files along with the database delete.
  if (existing) {
    await channels.removeConversation(id);
    await existing.cleanup();
  }
}

// Note: this method will not clean up external files, just delete from SQL
async function _removeConversations(ids: Array<string>) {
  await channels.removeConversation(ids);
}

async function eraseStorageIdFromConversations() {
  await channels.eraseStorageIdFromConversations();
}

async function getAllConversations({
  ConversationCollection,
}: {
  ConversationCollection: typeof ConversationModelCollectionType;
}): Promise<ConversationModelCollectionType> {
  const conversations = await channels.getAllConversations();

  const collection = new ConversationCollection();
  collection.add(conversations);

  return collection;
}

async function getAllConversationIds() {
  const ids = await channels.getAllConversationIds();

  return ids;
}

async function getAllPrivateConversations({
  ConversationCollection,
}: {
  ConversationCollection: typeof ConversationModelCollectionType;
}) {
  const conversations = await channels.getAllPrivateConversations();

  const collection = new ConversationCollection();
  collection.add(conversations);

  return collection;
}

async function getAllGroupsInvolvingId(
  id: string,
  {
    ConversationCollection,
  }: {
    ConversationCollection: typeof ConversationModelCollectionType;
  }
) {
  const conversations = await channels.getAllGroupsInvolvingId(id);

  const collection = new ConversationCollection();
  collection.add(conversations);

  return collection;
}

async function searchConversations(query: string) {
  const conversations = await channels.searchConversations(query);

  return conversations;
}

function handleSearchMessageJSON(messages: Array<SearchResultMessageType>) {
  return messages.map(message => ({
    ...JSON.parse(message.json),
    snippet: message.snippet,
  }));
}

async function searchMessages(
  query: string,
  { limit }: { limit?: number } = {}
) {
  const messages = await channels.searchMessages(query, { limit });

  return handleSearchMessageJSON(messages);
}

async function searchMessagesInConversation(
  query: string,
  conversationId: string,
  { limit }: { limit?: number } = {}
) {
  const messages = await channels.searchMessagesInConversation(
    query,
    conversationId,
    { limit }
  );

  return handleSearchMessageJSON(messages);
}

// Message

async function getMessageCount(conversationId?: string) {
  return channels.getMessageCount(conversationId);
}

async function saveMessage(
  data: MessageType,
  {
    forceSave,
    Message,
  }: { forceSave?: boolean; Message: typeof MessageModelType }
) {
  const id = await channels.saveMessage(_cleanData(data), { forceSave });
  Message.updateTimers();

  return id;
}

async function saveMessages(
  arrayOfMessages: Array<MessageType>,
  { forceSave }: { forceSave?: boolean } = {}
) {
  await channels.saveMessages(_cleanData(arrayOfMessages), { forceSave });
}

async function removeMessage(
  id: string,
  { Message }: { Message: typeof MessageModelType }
) {
  const message = await getMessageById(id, { Message });

  // Note: It's important to have a fully database-hydrated model to delete here because
  //   it needs to delete all associated on-disk files along with the database delete.
  if (message) {
    await channels.removeMessage(id);
    await message.cleanup();
  }
}

// Note: this method will not clean up external files, just delete from SQL
async function _removeMessages(ids: Array<string>) {
  await channels.removeMessage(ids);
}

async function getMessageById(
  id: string,
  { Message }: { Message: typeof MessageModelType }
) {
  const message = await channels.getMessageById(id);
  if (!message) {
    return null;
  }

  return new Message(message);
}

// For testing only
async function _getAllMessages({
  MessageCollection,
}: {
  MessageCollection: typeof MessageModelCollectionType;
}) {
  const messages = await channels._getAllMessages();

  return new MessageCollection(messages);
}

async function getAllMessageIds() {
  const ids = await channels.getAllMessageIds();

  return ids;
}

async function getMessageBySender(
  {
    source,
    sourceUuid,
    sourceDevice,
    sent_at,
  }: {
    source: string;
    sourceUuid: string;
    sourceDevice: string;
    sent_at: number;
  },
  { Message }: { Message: typeof MessageModelType }
) {
  const messages = await channels.getMessageBySender({
    source,
    sourceUuid,
    sourceDevice,
    sent_at,
  });
  if (!messages || !messages.length) {
    return null;
  }

  return new Message(messages[0]);
}

async function getUnreadByConversation(
  conversationId: string,
  {
    MessageCollection,
  }: { MessageCollection: typeof MessageModelCollectionType }
) {
  const messages = await channels.getUnreadByConversation(conversationId);

  return new MessageCollection(messages);
}

function handleMessageJSON(messages: Array<MessageTypeUnhydrated>) {
  return messages.map(message => JSON.parse(message.json));
}

async function getOlderMessagesByConversation(
  conversationId: string,
  {
    limit = 100,
    receivedAt = Number.MAX_VALUE,
    messageId,
    MessageCollection,
  }: {
    limit?: number;
    receivedAt?: number;
    messageId?: string;
    MessageCollection: typeof MessageModelCollectionType;
  }
) {
  const messages = await channels.getOlderMessagesByConversation(
    conversationId,
    {
      limit,
      receivedAt,
      messageId,
    }
  );

  return new MessageCollection(handleMessageJSON(messages));
}
async function getNewerMessagesByConversation(
  conversationId: string,
  {
    limit = 100,
    receivedAt = 0,
    MessageCollection,
  }: {
    limit?: number;
    receivedAt?: number;
    MessageCollection: typeof MessageModelCollectionType;
  }
) {
  const messages = await channels.getNewerMessagesByConversation(
    conversationId,
    {
      limit,
      receivedAt,
    }
  );

  return new MessageCollection(handleMessageJSON(messages));
}
async function getMessageMetricsForConversation(conversationId: string) {
  const result = await channels.getMessageMetricsForConversation(
    conversationId
  );

  return result;
}
async function migrateConversationMessages(
  obsoleteId: string,
  currentId: string
) {
  await channels.migrateConversationMessages(obsoleteId, currentId);
}

async function removeAllMessagesInConversation(
  conversationId: string,
  {
    MessageCollection,
  }: { MessageCollection: typeof MessageModelCollectionType }
) {
  let messages;
  do {
    // Yes, we really want the await in the loop. We're deleting 100 at a
    //   time so we don't use too much memory.
    messages = await getOlderMessagesByConversation(conversationId, {
      limit: 100,
      MessageCollection,
    });

    if (!messages.length) {
      return;
    }

    const ids = messages.map((message: MessageModelType) => message.id);

    // Note: It's very important that these models are fully hydrated because
    //   we need to delete all associated on-disk files along with the database delete.
    await Promise.all(
      messages.map(async (message: MessageModelType) => message.cleanup())
    );

    await channels.removeMessage(ids);
  } while (messages.length > 0);
}

async function getMessagesBySentAt(
  sentAt: number,
  {
    MessageCollection,
  }: { MessageCollection: typeof MessageModelCollectionType }
) {
  const messages = await channels.getMessagesBySentAt(sentAt);

  return new MessageCollection(messages);
}

async function getExpiredMessages({
  MessageCollection,
}: {
  MessageCollection: typeof MessageModelCollectionType;
}) {
  const messages = await channels.getExpiredMessages();

  return new MessageCollection(messages);
}

async function getOutgoingWithoutExpiresAt({
  MessageCollection,
}: {
  MessageCollection: typeof MessageModelCollectionType;
}) {
  const messages = await channels.getOutgoingWithoutExpiresAt();

  return new MessageCollection(messages);
}

async function getNextExpiringMessage({
  Message,
}: {
  Message: typeof MessageModelType;
}) {
  const message = await channels.getNextExpiringMessage();

  if (message) {
    return new Message(message);
  }

  return null;
}

async function getNextTapToViewMessageToAgeOut({
  Message,
}: {
  Message: typeof MessageModelType;
}) {
  const message = await channels.getNextTapToViewMessageToAgeOut();
  if (!message) {
    return null;
  }

  return new Message(message);
}
async function getTapToViewMessagesNeedingErase({
  MessageCollection,
}: {
  MessageCollection: typeof MessageModelCollectionType;
}) {
  const messages = await channels.getTapToViewMessagesNeedingErase();

  return new MessageCollection(messages);
}

// Unprocessed

async function getUnprocessedCount() {
  return channels.getUnprocessedCount();
}

async function getAllUnprocessed() {
  return channels.getAllUnprocessed();
}

async function getUnprocessedById(id: string) {
  return channels.getUnprocessedById(id);
}

async function saveUnprocessed(
  data: UnprocessedType,
  { forceSave }: { forceSave?: boolean } = {}
) {
  const id = await channels.saveUnprocessed(_cleanData(data), { forceSave });

  return id;
}

async function saveUnprocesseds(
  arrayOfUnprocessed: Array<UnprocessedType>,
  { forceSave }: { forceSave?: boolean } = {}
) {
  await channels.saveUnprocesseds(_cleanData(arrayOfUnprocessed), {
    forceSave,
  });
}

async function updateUnprocessedAttempts(id: string, attempts: number) {
  await channels.updateUnprocessedAttempts(id, attempts);
}
async function updateUnprocessedWithData(id: string, data: UnprocessedType) {
  await channels.updateUnprocessedWithData(id, data);
}
async function updateUnprocessedsWithData(array: Array<UnprocessedType>) {
  await channels.updateUnprocessedsWithData(array);
}

async function removeUnprocessed(id: string) {
  await channels.removeUnprocessed(id);
}

async function removeAllUnprocessed() {
  await channels.removeAllUnprocessed();
}

// Attachment downloads

async function getNextAttachmentDownloadJobs(
  limit?: number,
  options?: { timestamp?: number }
) {
  return channels.getNextAttachmentDownloadJobs(limit, options);
}
async function saveAttachmentDownloadJob(job: AttachmentDownloadJobType) {
  await channels.saveAttachmentDownloadJob(_cleanData(job));
}
async function setAttachmentDownloadJobPending(id: string, pending: boolean) {
  await channels.setAttachmentDownloadJobPending(id, pending);
}
async function resetAttachmentDownloadPending() {
  await channels.resetAttachmentDownloadPending();
}
async function removeAttachmentDownloadJob(id: string) {
  await channels.removeAttachmentDownloadJob(id);
}
async function removeAllAttachmentDownloadJobs() {
  await channels.removeAllAttachmentDownloadJobs();
}

// Stickers

async function getStickerCount() {
  return channels.getStickerCount();
}

async function createOrUpdateStickerPack(pack: StickerPackType) {
  await channels.createOrUpdateStickerPack(pack);
}
async function updateStickerPackStatus(
  packId: string,
  status: StickerPackStatusType,
  options?: { timestamp: number }
) {
  await channels.updateStickerPackStatus(packId, status, options);
}
async function createOrUpdateSticker(sticker: StickerType) {
  await channels.createOrUpdateSticker(sticker);
}
async function updateStickerLastUsed(
  packId: string,
  stickerId: number,
  timestamp: number
) {
  await channels.updateStickerLastUsed(packId, stickerId, timestamp);
}
async function addStickerPackReference(messageId: string, packId: string) {
  await channels.addStickerPackReference(messageId, packId);
}
async function deleteStickerPackReference(messageId: string, packId: string) {
  const paths = await channels.deleteStickerPackReference(messageId, packId);

  return paths;
}
async function deleteStickerPack(packId: string) {
  const paths = await channels.deleteStickerPack(packId);

  return paths;
}
async function getAllStickerPacks() {
  const packs = await channels.getAllStickerPacks();

  return packs;
}
async function getAllStickers() {
  const stickers = await channels.getAllStickers();

  return stickers;
}
async function getRecentStickers() {
  const recentStickers = await channels.getRecentStickers();

  return recentStickers;
}

// Emojis
async function updateEmojiUsage(shortName: string) {
  await channels.updateEmojiUsage(shortName);
}
async function getRecentEmojis(limit: number = 32) {
  return channels.getRecentEmojis(limit);
}

// Other

async function removeAll() {
  await channels.removeAll();
}

async function removeAllConfiguration() {
  await channels.removeAllConfiguration();
}

async function cleanupOrphanedAttachments() {
  await callChannel(CLEANUP_ORPHANED_ATTACHMENTS_KEY);
}

async function ensureFilePermissions() {
  await callChannel(ENSURE_FILE_PERMISSIONS);
}

// Note: will need to restart the app after calling this, to set up afresh
async function removeOtherData() {
  await Promise.all([
    callChannel(ERASE_SQL_KEY),
    callChannel(ERASE_ATTACHMENTS_KEY),
    callChannel(ERASE_STICKERS_KEY),
    callChannel(ERASE_TEMP_KEY),
    callChannel(ERASE_DRAFTS_KEY),
  ]);
}

async function callChannel(name: string) {
  return new Promise((resolve, reject) => {
    ipcRenderer.send(name);
    ipcRenderer.once(`${name}-done`, (_, error) => {
      if (error) {
        reject(error);

        return;
      }

      resolve();

      return;
    });

    setTimeout(() => {
      reject(new Error(`callChannel call to ${name} timed out`));
    }, DATABASE_UPDATE_TIMEOUT);
  });
}

async function getMessagesNeedingUpgrade(
  limit: number,
  { maxVersion = CURRENT_SCHEMA_VERSION }: { maxVersion: number }
) {
  const messages = await channels.getMessagesNeedingUpgrade(limit, {
    maxVersion,
  });

  return messages;
}

async function getMessagesWithVisualMediaAttachments(
  conversationId: string,
  { limit }: { limit: number }
) {
  return channels.getMessagesWithVisualMediaAttachments(conversationId, {
    limit,
  });
}

async function getMessagesWithFileAttachments(
  conversationId: string,
  { limit }: { limit: number }
) {
  return channels.getMessagesWithFileAttachments(conversationId, {
    limit,
  });
}