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YoutubeDL-Material/backend/db.js

995 lines
35 KiB
JavaScript

var fs = require('fs-extra')
var path = require('path')
var utils = require('./utils')
const { uuid } = require('uuidv4');
const config_api = require('./config');
const { MongoClient } = require("mongodb");
const low = require('lowdb')
const FileSync = require('lowdb/adapters/FileSync');
const local_adapter = new FileSync('./appdata/local_db.json');
const local_db = low(local_adapter);
var logger = null;
var db = null;
var users_db = null;
var database = null;
const tables = {
files: {
name: 'files',
primary_key: 'uid'
},
playlists: {
name: 'playlists',
primary_key: 'id'
},
categories: {
name: 'categories',
primary_key: 'uid'
},
subscriptions: {
name: 'subscriptions',
primary_key: 'id'
},
downloads: {
name: 'downloads'
},
users: {
name: 'users',
primary_key: 'uid'
},
roles: {
name: 'roles',
primary_key: 'key'
},
test: {
name: 'test'
}
}
const tables_list = Object.keys(tables);
const local_db_defaults = {}
tables_list.forEach(table => {local_db_defaults[table] = []});
local_db.defaults(local_db_defaults).write();
let using_local_db = config_api.getConfigItem('ytdl_use_local_db');
function setDB(input_db, input_users_db) {
db = input_db; users_db = input_users_db;
exports.db = input_db;
exports.users_db = input_users_db
}
function setLogger(input_logger) {
logger = input_logger;
}
exports.initialize = (input_db, input_users_db, input_logger) => {
setDB(input_db, input_users_db);
setLogger(input_logger);
}
exports.connectToDB = async (retries = 5, no_fallback = false) => {
if (using_local_db) return;
const success = await exports._connectToDB();
if (success) return true;
logger.warn(`MongoDB connection failed! Retrying ${retries} times...`);
const retry_delay_ms = 2000;
for (let i = 0; i < retries; i++) {
const retry_succeeded = await exports._connectToDB();
if (retry_succeeded) {
logger.info(`Successfully connected to DB after ${i+1} attempt(s)`);
return true;
}
if (i !== retries - 1) {
logger.warn(`Retry ${i+1} failed, waiting ${retry_delay_ms}ms before trying again.`);
await utils.wait(retry_delay_ms);
} else {
logger.warn(`Retry ${i+1} failed.`);
}
}
if (no_fallback) {
logger.error('Failed to connect to MongoDB. Verify your connection string is valid.');
return;
}
using_local_db = true;
config_api.setConfigItem('ytdl_use_local_db', true);
logger.error('Failed to connect to MongoDB, using Local DB as a fallback. Make sure your MongoDB instance is accessible, or set Local DB as a default through the config.');
return true;
}
exports._connectToDB = async () => {
const uri = config_api.getConfigItem('ytdl_mongodb_connection_string'); // "mongodb://127.0.0.1:27017/?compressors=zlib&gssapiServiceName=mongodb";
const client = new MongoClient(uri, {
useNewUrlParser: true,
useUnifiedTopology: true,
});
try {
await client.connect();
database = client.db('ytdl_material');
const existing_collections = (await database.listCollections({}, { nameOnly: true }).toArray()).map(collection => collection.name);
const missing_tables = tables_list.filter(table => !(existing_collections.includes(table)));
missing_tables.forEach(async table => {
await database.createCollection(table);
});
tables_list.forEach(async table => {
const primary_key = tables[table]['primary_key'];
if (!primary_key) return;
await database.collection(table).createIndex({[primary_key]: 1}, { unique: true });
});
return true;
} catch(err) {
logger.error(err);
return false;
} finally {
// Ensures that the client will close when you finish/error
// await client.close();
}
}
exports.registerFileDB = async (file_path, type, multiUserMode = null, sub = null, customPath = null, category = null, cropFileSettings = null, file_object = null) => {
let db_path = null;
const file_id = utils.removeFileExtension(file_path);
if (!file_object) file_object = generateFileObject(file_id, type, customPath || multiUserMode && multiUserMode.file_path, sub);
if (!file_object) {
logger.error(`Could not find associated JSON file for ${type} file ${file_id}`);
return false;
}
utils.fixVideoMetadataPerms(file_id, type, multiUserMode && multiUserMode.file_path);
// add thumbnail path
file_object['thumbnailPath'] = utils.getDownloadedThumbnail(file_id, type, customPath || multiUserMode && multiUserMode.file_path);
// if category exists, only include essential info
if (category) file_object['category'] = {name: category['name'], uid: category['uid']};
// modify duration
if (cropFileSettings) {
file_object['duration'] = (cropFileSettings.cropFileEnd || file_object.duration) - cropFileSettings.cropFileStart;
}
if (multiUserMode) file_object['user_uid'] = multiUserMode.user;
const file_obj = await registerFileDBManual(file_object);
// remove metadata JSON if needed
if (!config_api.getConfigItem('ytdl_include_metadata')) {
utils.deleteJSONFile(file_id, type, multiUserMode && multiUserMode.file_path)
}
return file_obj;
}
exports.registerFileDB2 = async (file_path, type, user_uid = null, category = null, sub_id = null, cropFileSettings = null, file_object = null) => {
if (!file_object) file_object = generateFileObject2(file_path, type);
if (!file_object) {
logger.error(`Could not find associated JSON file for ${type} file ${file_path}`);
return false;
}
utils.fixVideoMetadataPerms2(file_path, type);
// add thumbnail path
file_object['thumbnailPath'] = utils.getDownloadedThumbnail2(file_path, type);
// if category exists, only include essential info
if (category) file_object['category'] = {name: category['name'], uid: category['uid']};
// modify duration
if (cropFileSettings) {
file_object['duration'] = (cropFileSettings.cropFileEnd || file_object.duration) - cropFileSettings.cropFileStart;
}
if (user_uid) file_object['user_uid'] = user_uid;
if (sub_id) file_object['sub_id'] = sub_id;
const file_obj = await registerFileDBManual(file_object);
// remove metadata JSON if needed
if (!config_api.getConfigItem('ytdl_include_metadata')) {
utils.deleteJSONFile2(file_path, type)
}
return file_obj;
}
async function registerFileDBManual(file_object) {
// add additional info
file_object['uid'] = uuid();
file_object['registered'] = Date.now();
path_object = path.parse(file_object['path']);
file_object['path'] = path.format(path_object);
exports.insertRecordIntoTable('files', file_object, {path: file_object['path']})
return file_object;
}
function generateFileObject(id, type, customPath = null, sub = null) {
if (!customPath && sub) {
customPath = getAppendedBasePathSub(sub, config_api.getConfigItem('ytdl_subscriptions_base_path'));
}
var jsonobj = (type === 'audio') ? utils.getJSONMp3(id, customPath, true) : utils.getJSONMp4(id, customPath, true);
if (!jsonobj) {
return null;
}
const ext = (type === 'audio') ? '.mp3' : '.mp4'
const file_path = utils.getTrueFileName(jsonobj['_filename'], type); // path.join(type === 'audio' ? audioFolderPath : videoFolderPath, id + ext);
// console.
var stats = fs.statSync(path.join(__dirname, file_path));
var title = jsonobj.title;
var url = jsonobj.webpage_url;
var uploader = jsonobj.uploader;
var upload_date = jsonobj.upload_date;
upload_date = upload_date ? `${upload_date.substring(0, 4)}-${upload_date.substring(4, 6)}-${upload_date.substring(6, 8)}` : 'N/A';
var size = stats.size;
var thumbnail = jsonobj.thumbnail;
var duration = jsonobj.duration;
var isaudio = type === 'audio';
var description = jsonobj.description;
var file_obj = new utils.File(id, title, thumbnail, isaudio, duration, url, uploader, size, file_path, upload_date, description, jsonobj.view_count, jsonobj.height, jsonobj.abr);
return file_obj;
}
function generateFileObject2(file_path, type) {
var jsonobj = utils.getJSON(file_path, type);
if (!jsonobj) {
return null;
}
const ext = (type === 'audio') ? '.mp3' : '.mp4'
const true_file_path = utils.getTrueFileName(jsonobj['_filename'], type);
// console.
var stats = fs.statSync(true_file_path);
const file_id = utils.removeFileExtension(path.basename(file_path));
var title = jsonobj.title;
var url = jsonobj.webpage_url;
var uploader = jsonobj.uploader;
var upload_date = jsonobj.upload_date;
upload_date = upload_date ? `${upload_date.substring(0, 4)}-${upload_date.substring(4, 6)}-${upload_date.substring(6, 8)}` : 'N/A';
var size = stats.size;
var thumbnail = jsonobj.thumbnail;
var duration = jsonobj.duration;
var isaudio = type === 'audio';
var description = jsonobj.description;
var file_obj = new utils.File(file_id, title, thumbnail, isaudio, duration, url, uploader, size, true_file_path, upload_date, description, jsonobj.view_count, jsonobj.height, jsonobj.abr);
return file_obj;
}
function getAppendedBasePathSub(sub, base_path) {
return path.join(base_path, (sub.isPlaylist ? 'playlists/' : 'channels/'), sub.name);
}
exports.getFileDirectoriesAndDBs = async () => {
let dirs_to_check = [];
let subscriptions_to_check = [];
const subscriptions_base_path = config_api.getConfigItem('ytdl_subscriptions_base_path'); // only for single-user mode
const multi_user_mode = config_api.getConfigItem('ytdl_multi_user_mode');
const usersFileFolder = config_api.getConfigItem('ytdl_users_base_path');
const subscriptions_enabled = config_api.getConfigItem('ytdl_allow_subscriptions');
if (multi_user_mode) {
const users = await exports.getRecords('users');
for (let i = 0; i < users.length; i++) {
const user = users[i];
// add user's audio dir to check list
dirs_to_check.push({
basePath: path.join(usersFileFolder, user.uid, 'audio'),
user_uid: user.uid,
type: 'audio'
});
// add user's video dir to check list
dirs_to_check.push({
basePath: path.join(usersFileFolder, user.uid, 'video'),
type: 'video'
});
}
} else {
const audioFolderPath = config_api.getConfigItem('ytdl_audio_folder_path');
const videoFolderPath = config_api.getConfigItem('ytdl_video_folder_path');
// add audio dir to check list
dirs_to_check.push({
basePath: audioFolderPath,
type: 'audio'
});
// add video dir to check list
dirs_to_check.push({
basePath: videoFolderPath,
type: 'video'
});
}
if (subscriptions_enabled) {
const subscriptions = await exports.getRecords('subscriptions');
subscriptions_to_check = subscriptions_to_check.concat(subscriptions);
}
// add subscriptions to check list
for (let i = 0; i < subscriptions_to_check.length; i++) {
let subscription_to_check = subscriptions_to_check[i];
if (!subscription_to_check.name) {
// TODO: Remove subscription as it'll never complete
continue;
}
dirs_to_check.push({
basePath: subscription_to_check.user_uid ? path.join(usersFileFolder, subscription_to_check.user_uid, 'subscriptions', subscription_to_check.isPlaylist ? 'playlists/' : 'channels/', subscription_to_check.name)
: path.join(subscriptions_base_path, subscription_to_check.isPlaylist ? 'playlists/' : 'channels/', subscription_to_check.name),
user_uid: subscription_to_check.user_uid,
type: subscription_to_check.type,
sub_id: subscription_to_check['id']
});
}
return dirs_to_check;
}
exports.importUnregisteredFiles = async () => {
const dirs_to_check = await exports.getFileDirectoriesAndDBs();
// run through check list and check each file to see if it's missing from the db
for (let i = 0; i < dirs_to_check.length; i++) {
const dir_to_check = dirs_to_check[i];
// recursively get all files in dir's path
const files = await utils.getDownloadedFilesByType(dir_to_check.basePath, dir_to_check.type);
for (let j = 0; j < files.length; j++) {
const file = files[j];
// check if file exists in db, if not add it
const file_is_registered = !!(await exports.getRecord('files', {id: file.id, sub_id: dir_to_check.sub_id}))
if (!file_is_registered) {
// add additional info
await exports.registerFileDB2(file['path'], dir_to_check.type, dir_to_check.user_uid, null, dir_to_check.sub_id, null);
logger.verbose(`Added discovered file to the database: ${file.id}`);
}
}
}
}
exports.preimportUnregisteredSubscriptionFile = async (sub, appendedBasePath) => {
const preimported_file_paths = [];
const files = await utils.getDownloadedFilesByType(appendedBasePath, sub.type);
for (let i = 0; i < files.length; i++) {
const file = files[i];
// check if file exists in db, if not add it
const file_is_registered = await exports.getRecord('files', {id: file.id, sub_id: sub.id});
if (!file_is_registered) {
// add additional info
await exports.registerFileDB2(file['path'], sub.type, sub.user_uid, null, sub.id, null, file);
preimported_file_paths.push(file['path']);
logger.verbose(`Preemptively added subscription file to the database: ${file.id}`);
}
}
return preimported_file_paths;
}
exports.addMetadataPropertyToDB = async (property_key) => {
try {
const dirs_to_check = await exports.getFileDirectoriesAndDBs();
const update_obj = {};
for (let i = 0; i < dirs_to_check.length; i++) {
const dir_to_check = dirs_to_check[i];
// recursively get all files in dir's path
const files = await utils.getDownloadedFilesByType(dir_to_check.basePath, dir_to_check.type, true);
for (let j = 0; j < files.length; j++) {
const file = files[j];
if (file[property_key]) {
update_obj[file.uid] = {[property_key]: file[property_key]};
}
}
}
return await exports.bulkUpdateRecords('files', 'uid', update_obj);
} catch(err) {
logger.error(err);
return false;
}
}
exports.createPlaylist = async (playlist_name, uids, type, thumbnail_url, user_uid = null) => {
let new_playlist = {
name: playlist_name,
uids: uids,
id: uuid(),
thumbnailURL: thumbnail_url,
type: type,
registered: Date.now(),
};
const duration = await exports.calculatePlaylistDuration(new_playlist, user_uid);
new_playlist.duration = duration;
new_playlist.user_uid = user_uid ? user_uid : undefined;
await exports.insertRecordIntoTable('playlists', new_playlist);
return new_playlist;
}
exports.getPlaylist = async (playlist_id, user_uid = null, require_sharing = false) => {
let playlist = await exports.getRecord('playlists', {id: playlist_id});
if (!playlist) {
playlist = await exports.getRecord('categories', {uid: playlist_id});
if (playlist) {
// category found
const files = await exports.getFiles(user_uid);
utils.addUIDsToCategory(playlist, files);
}
}
// converts playlists to new UID-based schema
if (playlist && playlist['fileNames'] && !playlist['uids']) {
playlist['uids'] = [];
logger.verbose(`Converting playlist ${playlist['name']} to new UID-based schema.`);
for (let i = 0; i < playlist['fileNames'].length; i++) {
const fileName = playlist['fileNames'][i];
const uid = await exports.getVideoUIDByID(fileName, user_uid);
if (uid) playlist['uids'].push(uid);
else logger.warn(`Failed to convert file with name ${fileName} to its UID while converting playlist ${playlist['name']} to the new UID-based schema. The original file is likely missing/deleted and it will be skipped.`);
}
exports.updatePlaylist(playlist, user_uid);
}
// prevent unauthorized users from accessing the file info
if (require_sharing && !playlist['sharingEnabled']) return null;
return playlist;
}
exports.updatePlaylist = async (playlist, user_uid = null) => {
let playlistID = playlist.id;
const duration = await exports.calculatePlaylistDuration(playlist, user_uid);
playlist.duration = duration;
return await exports.updateRecord('playlists', {id: playlistID}, playlist);
}
exports.setPlaylistProperty = async (playlist_id, assignment_obj, user_uid = null) => {
let success = await exports.updateRecord('playlists', {id: playlist_id}, assignment_obj);
if (!success) {
success = await exports.updateRecord('categories', {uid: playlist_id}, assignment_obj);
}
if (!success) {
logger.error(`Could not find playlist or category with ID ${playlist_id}`);
}
return success;
}
exports.calculatePlaylistDuration = async (playlist, uuid, playlist_file_objs = null) => {
if (!playlist_file_objs) {
playlist_file_objs = [];
for (let i = 0; i < playlist['uids'].length; i++) {
const uid = playlist['uids'][i];
const file_obj = await exports.getVideo(uid, uuid);
if (file_obj) playlist_file_objs.push(file_obj);
}
}
return playlist_file_objs.reduce((a, b) => a + utils.durationStringToNumber(b.duration), 0);
}
exports.deleteFile = async (uid, uuid = null, blacklistMode = false) => {
const file_obj = await exports.getVideo(uid, uuid);
const type = file_obj.isAudio ? 'audio' : 'video';
const folderPath = path.dirname(file_obj.path);
const ext = type === 'audio' ? 'mp3' : 'mp4';
const name = file_obj.id;
const filePathNoExtension = utils.removeFileExtension(file_obj.path);
var jsonPath = `${file_obj.path}.info.json`;
var altJSONPath = `${filePathNoExtension}.info.json`;
var thumbnailPath = `${filePathNoExtension}.webp`;
var altThumbnailPath = `${filePathNoExtension}.jpg`;
jsonPath = path.join(__dirname, jsonPath);
altJSONPath = path.join(__dirname, altJSONPath);
let jsonExists = await fs.pathExists(jsonPath);
let thumbnailExists = await fs.pathExists(thumbnailPath);
if (!jsonExists) {
if (await fs.pathExists(altJSONPath)) {
jsonExists = true;
jsonPath = altJSONPath;
}
}
if (!thumbnailExists) {
if (await fs.pathExists(altThumbnailPath)) {
thumbnailExists = true;
thumbnailPath = altThumbnailPath;
}
}
let fileExists = await fs.pathExists(file_obj.path);
if (config_api.descriptors[uid]) {
try {
for (let i = 0; i < config_api.descriptors[uid].length; i++) {
config_api.descriptors[uid][i].destroy();
}
} catch(e) {
}
}
let useYoutubeDLArchive = config_api.getConfigItem('ytdl_use_youtubedl_archive');
if (useYoutubeDLArchive) {
const archive_path = uuid ? path.join(usersFileFolder, uuid, 'archives', `archive_${type}.txt`) : path.join('appdata', 'archives', `archive_${type}.txt`);
// get ID from JSON
var jsonobj = await (type === 'audio' ? utils.getJSONMp3(name, folderPath) : utils.getJSONMp4(name, folderPath));
let id = null;
if (jsonobj) id = jsonobj.id;
// use subscriptions API to remove video from the archive file, and write it to the blacklist
if (await fs.pathExists(archive_path)) {
const line = id ? await utils.removeIDFromArchive(archive_path, id) : null;
if (blacklistMode && line) await writeToBlacklist(type, line);
} else {
logger.info('Could not find archive file for audio files. Creating...');
await fs.close(await fs.open(archive_path, 'w'));
}
}
if (jsonExists) await fs.unlink(jsonPath);
if (thumbnailExists) await fs.unlink(thumbnailPath);
await exports.removeRecord('files', {uid: uid});
if (fileExists) {
await fs.unlink(file_obj.path);
if (await fs.pathExists(jsonPath) || await fs.pathExists(file_obj.path)) {
return false;
} else {
return true;
}
} else {
// TODO: tell user that the file didn't exist
return true;
}
}
// Video ID is basically just the file name without the base path and file extension - this method helps us get away from that
exports.getVideoUIDByID = async (file_id, uuid = null) => {
const file_obj = await exports.getRecord('files', {id: file_id});
return file_obj ? file_obj['uid'] : null;
}
exports.getVideo = async (file_uid, uuid = null, sub_id = null) => {
return await exports.getRecord('files', {uid: file_uid});
}
exports.getFiles = async (uuid = null) => {
return await exports.getRecords('files', {user_uid: uuid});
}
exports.setVideoProperty = async (file_uid, assignment_obj) => {
// TODO: check if video exists, throw error if not
await exports.updateRecord('files', {uid: file_uid}, assignment_obj);
}
// Basic DB functions
// Create
exports.insertRecordIntoTable = async (table, doc, replaceFilter = null) => {
// local db override
if (using_local_db) {
if (replaceFilter) local_db.get(table).remove(replaceFilter).write();
local_db.get(table).push(doc).write();
return true;
}
if (replaceFilter) await database.collection(table).deleteMany(replaceFilter);
const output = await database.collection(table).insertOne(doc);
logger.debug(`Inserted doc into ${table}`);
return !!(output['result']['ok']);
}
exports.insertRecordsIntoTable = async (table, docs, ignore_errors = false) => {
// local db override
if (using_local_db) {
local_db.get(table).push(...docs).write();
return true;
}
const output = await database.collection(table).insertMany(docs, {ordered: !ignore_errors});
logger.debug(`Inserted ${output.insertedCount} docs into ${table}`);
return !!(output['result']['ok']);
}
exports.bulkInsertRecordsIntoTable = async (table, docs) => {
// local db override
if (using_local_db) {
return await exports.insertRecordsIntoTable(table, docs);
}
// not a necessary function as insertRecords does the same thing but gives us more control on batch size if needed
const table_collection = database.collection(table);
let bulk = table_collection.initializeOrderedBulkOp(); // Initialize the Ordered Batch
for (let i = 0; i < docs.length; i++) {
bulk.insert(docs[i]);
}
const output = await bulk.execute();
return !!(output['result']['ok']);
}
// Read
exports.getRecord = async (table, filter_obj) => {
// local db override
if (using_local_db) {
return applyFilterLocalDB(local_db.get(table), filter_obj, 'find').value();
}
return await database.collection(table).findOne(filter_obj);
}
exports.getRecords = async (table, filter_obj = null) => {
// local db override
if (using_local_db) {
return filter_obj ? applyFilterLocalDB(local_db.get(table), filter_obj, 'filter').value() : local_db.get(table).value();
}
return filter_obj ? await database.collection(table).find(filter_obj).toArray() : await database.collection(table).find().toArray();
}
// Update
exports.updateRecord = async (table, filter_obj, update_obj) => {
// local db override
if (using_local_db) {
applyFilterLocalDB(local_db.get(table), filter_obj, 'find').assign(update_obj).write();
return true;
}
// sometimes _id will be in the update obj, this breaks mongodb
if (update_obj['_id']) delete update_obj['_id'];
const output = await database.collection(table).updateOne(filter_obj, {$set: update_obj});
return !!(output['result']['ok']);
}
exports.updateRecords = async (table, filter_obj, update_obj) => {
// local db override
if (using_local_db) {
applyFilterLocalDB(local_db.get(table), filter_obj, 'filter').assign(update_obj).write();
return true;
}
const output = await database.collection(table).updateMany(filter_obj, {$set: update_obj});
return !!(output['result']['ok']);
}
exports.bulkUpdateRecords = async (table, key_label, update_obj) => {
// local db override
if (using_local_db) {
local_db.get(table).each((record) => {
const item_id_to_update = record[key_label];
if (!update_obj[item_id_to_update]) return;
const props_to_update = Object.keys(update_obj[item_id_to_update]);
for (let i = 0; i < props_to_update.length; i++) {
const prop_to_update = props_to_update[i];
const prop_value = update_obj[item_id_to_update][prop_to_update];
record[prop_to_update] = prop_value;
}
}).write();
return true;
}
const table_collection = database.collection(table);
let bulk = table_collection.initializeOrderedBulkOp(); // Initialize the Ordered Batch
const item_ids_to_update = Object.keys(update_obj);
for (let i = 0; i < item_ids_to_update.length; i++) {
const item_id_to_update = item_ids_to_update[i];
bulk.find({[key_label]: item_id_to_update }).updateOne({
"$set": update_obj[item_id_to_update]
});
}
const output = await bulk.execute();
return !!(output['result']['ok']);
}
exports.pushToRecordsArray = async (table, filter_obj, key, value) => {
// local db override
if (using_local_db) {
applyFilterLocalDB(local_db.get(table), filter_obj, 'find').get(key).push(value).write();
return true;
}
const output = await database.collection(table).updateOne(filter_obj, {$push: {[key]: value}});
return !!(output['result']['ok']);
}
exports.pullFromRecordsArray = async (table, filter_obj, key, value) => {
// local db override
if (using_local_db) {
applyFilterLocalDB(local_db.get(table), filter_obj, 'find').get(key).pull(value).write();
return true;
}
const output = await database.collection(table).updateOne(filter_obj, {$pull: {[key]: value}});
return !!(output['result']['ok']);
}
// Delete
exports.removeRecord = async (table, filter_obj) => {
// local db override
if (using_local_db) {
applyFilterLocalDB(local_db.get(table), filter_obj, 'remove').write();
return true;
}
const output = await database.collection(table).deleteOne(filter_obj);
return !!(output['result']['ok']);
}
exports.removeAllRecords = async (table = null) => {
// local db override
const tables_to_remove = table ? [table] : tables_list;
if (using_local_db) {
logger.debug(`Removing all records from: ${tables_to_remove}`)
for (let i = 0; i < tables_to_remove.length; i++) {
const table_to_remove = tables_to_remove[i];
local_db.assign({[table_to_remove]: []}).write();
logger.debug(`Removed all records from ${table_to_remove}`);
}
return true;
}
let success = true;
logger.debug(`Removing all records from: ${tables_to_remove}`)
for (let i = 0; i < tables_to_remove.length; i++) {
const table_to_remove = tables_to_remove[i];
const output = await database.collection(table_to_remove).deleteMany({});
logger.debug(`Removed all records from ${table_to_remove}`);
success &= !!(output['result']['ok']);
}
return success;
}
// Stats
exports.getDBStats = async () => {
const stats_by_table = {};
for (let i = 0; i < tables_list.length; i++) {
const table = tables_list[i];
if (table === 'test') continue;
stats_by_table[table] = await getDBTableStats(table);
}
return {stats_by_table: stats_by_table, using_local_db: using_local_db};
}
const getDBTableStats = async (table) => {
const table_stats = {};
// local db override
if (using_local_db) {
table_stats['records_count'] = local_db.get(table).value().length;
} else {
const stats = await database.collection(table).stats();
table_stats['records_count'] = stats.count;
}
return table_stats;
}
// JSON to DB
exports.generateJSONTables = async (db_json, users_json) => {
// create records
let files = db_json['files'] || [];
let playlists = db_json['playlists'] || [];
let categories = db_json['categories'] || [];
let subscriptions = db_json['subscriptions'] || [];
const users = users_json['users'];
for (let i = 0; i < users.length; i++) {
const user = users[i];
if (user['files']) {
user['files'] = user['files'].map(file => ({ ...file, user_uid: user['uid'] }));
files = files.concat(user['files']);
}
if (user['playlists']) {
user['playlists'] = user['playlists'].map(playlist => ({ ...playlist, user_uid: user['uid'] }));
playlists = playlists.concat(user['playlists']);
}
if (user['categories']) {
user['categories'] = user['categories'].map(category => ({ ...category, user_uid: user['uid'] }));
categories = categories.concat(user['categories']);
}
if (user['subscriptions']) {
user['subscriptions'] = user['subscriptions'].map(subscription => ({ ...subscription, user_uid: user['uid'] }));
subscriptions = subscriptions.concat(user['subscriptions']);
}
}
const tables_obj = {};
// TODO: use create*Records funcs to strip unnecessary properties
tables_obj.files = createFilesRecords(files, subscriptions);
tables_obj.playlists = playlists;
tables_obj.categories = categories;
tables_obj.subscriptions = createSubscriptionsRecords(subscriptions);
tables_obj.users = createUsersRecords(users);
tables_obj.roles = createRolesRecords(users_json['roles']);
tables_obj.downloads = createDownloadsRecords(db_json['downloads'])
return tables_obj;
}
exports.importJSONToDB = async (db_json, users_json) => {
await fs.writeFile(`appdata/db.json.${Date.now()/1000}.bak`, JSON.stringify(db_json));
await fs.writeFile(`appdata/users_db.json.${Date.now()/1000}.bak`, JSON.stringify(users_json));
await exports.removeAllRecords();
const tables_obj = await exports.generateJSONTables(db_json, users_json);
const table_keys = Object.keys(tables_obj);
let success = true;
for (let i = 0; i < table_keys.length; i++) {
const table_key = table_keys[i];
if (!tables_obj[table_key] || tables_obj[table_key].length === 0) continue;
console.log('hi');
success &= await exports.insertRecordsIntoTable(table_key, tables_obj[table_key], true);
}
return success;
}
const createFilesRecords = (files, subscriptions) => {
for (let i = 0; i < subscriptions.length; i++) {
const subscription = subscriptions[i];
subscription['videos'] = subscription['videos'].map(file => ({ ...file, sub_id: subscription['id'], user_uid: subscription['user_uid'] ? subscription['user_uid'] : undefined}));
files = files.concat(subscriptions[i]['videos']);
}
return files;
}
const createPlaylistsRecords = async (playlists) => {
}
const createCategoriesRecords = async (categories) => {
}
const createSubscriptionsRecords = (subscriptions) => {
for (let i = 0; i < subscriptions.length; i++) {
delete subscriptions[i]['videos'];
}
return subscriptions;
}
const createUsersRecords = (users) => {
users.forEach(user => {
delete user['files'];
delete user['playlists'];
delete user['subscriptions'];
});
return users;
}
const createRolesRecords = (roles) => {
const new_roles = [];
Object.keys(roles).forEach(role_key => {
new_roles.push({
key: role_key,
...roles[role_key]
});
});
return new_roles;
}
const createDownloadsRecords = (downloads) => {
const new_downloads = [];
Object.keys(downloads).forEach(session_key => {
new_downloads.push({
key: session_key,
...downloads[session_key]
});
});
return new_downloads;
}
exports.transferDB = async (local_to_remote) => {
const table_to_records = {};
for (let i = 0; i < tables_list.length; i++) {
const table = tables_list[i];
table_to_records[table] = await exports.getRecords(table);
}
using_local_db = !local_to_remote;
if (local_to_remote) {
// backup local DB
logger.debug('Backup up Local DB...');
await fs.copyFile('appdata/local_db.json', `appdata/local_db.json.${Date.now()/1000}.bak`);
const db_connected = await exports.connectToDB(5, true);
if (!db_connected) {
logger.error('Failed to transfer database - could not connect to MongoDB. Verify that your connection URL is valid.');
return false;
}
}
success = true;
logger.debug('Clearing new database before transfer...');
await exports.removeAllRecords();
logger.debug('Database cleared! Beginning transfer.');
for (let i = 0; i < tables_list.length; i++) {
const table = tables_list[i];
if (!table_to_records[table] || table_to_records[table].length === 0) continue;
success &= await exports.bulkInsertRecordsIntoTable(table, table_to_records[table]);
}
config_api.setConfigItem('ytdl_use_local_db', using_local_db);
return success;
}
/*
This function is necessary to emulate mongodb's ability to search for null or missing values.
A filter of null or undefined for a property will find docs that have that property missing, or have it
null or undefined. We want that same functionality for the local DB as well
*/
const applyFilterLocalDB = (db_path, filter_obj, operation) => {
const filter_props = Object.keys(filter_obj);
const return_val = db_path[operation](record => {
if (!filter_props) return true;
let filtered = true;
for (let i = 0; i < filter_props.length; i++) {
const filter_prop = filter_props[i];
const filter_prop_value = filter_obj[filter_prop];
if (filter_prop_value === undefined || filter_prop_value === null) {
filtered &= record[filter_prop] === undefined || record[filter_prop] === null
} else {
filtered &= record[filter_prop] === filter_prop_value;
}
}
return filtered;
});
return return_val;
}