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ass/backend/UserConfig.ts

180 lines
5.7 KiB

import { UserConfiguration, UserConfigTypeChecker, PostgresConfiguration } from 'ass';
import fs from 'fs-extra';
import { path } from '@tycrek/joint';
import { log } from './log';
const FILEPATH = path.join('.ass-data/userconfig.json');
/**
* Returns a boolean if the provided value is a number
*/
const numChecker = (val: any) => {
try { return !isNaN(parseInt(val)) && typeof val !== 'string'; }
catch (err) { return false; }
}
/**
* Returns a boolean if the provided value is a non-empty string
*/
const basicStringChecker = (val: any) => typeof val === 'string' && val.length > 0;
/**
* User-config property type checker functions
*/
const Checkers: UserConfigTypeChecker = {
uploadsDir: (val) => {
try {
fs.pathExistsSync(val)
? fs.accessSync(val)
: fs.mkdirSync(val, { recursive: true });
return true;
}
catch (err) {
log.warn('Cannot access directory', `${val}`);
console.error(err);
return false;
}
},
idType: (val) => ['random', 'original', 'gfycat', 'timestamp', 'zws'].includes(val),
idSize: numChecker,
gfySize: numChecker,
maximumFileSize: numChecker,
s3: {
endpoint: basicStringChecker,
bucket: basicStringChecker,
region: (val) => val == null || basicStringChecker(val),
credentials: {
accessKey: basicStringChecker,
secretKey: basicStringChecker
}
},
sql: {
mySql: {
host: basicStringChecker,
user: basicStringChecker,
password: basicStringChecker,
database: basicStringChecker,
},
postgres: {
port: (val) => numChecker(val) && val >= 1 && val <= 65535
}
},
rateLimit: {
endpoint: (val) => val == null || (val != null && (numChecker(val.requests) && numChecker(val.duration)))
}
};
export class UserConfig {
private static _config: UserConfiguration;
private static _ready = false;
public static get config() { return UserConfig._config; }
public static get ready() { return UserConfig._ready; }
constructor(config?: any) {
// Typically this would only happen during first-time setup (for now)
if (config != null) {
UserConfig._config = UserConfig.parseConfig(config);
UserConfig._ready = true;
}
}
/**
* Ensures that all config options are valid
*/
private static parseConfig(c: any) {
const config = (typeof c === 'string' ? JSON.parse(c) : c) as UserConfiguration;
// * Base config
if (!Checkers.uploadsDir(config.uploadsDir)) throw new Error(`Unable to access uploads directory: ${config.uploadsDir}`);
if (!Checkers.idType(config.idType)) throw new Error(`Invalid ID type: ${config.idType}`);
if (!Checkers.idSize(config.idSize)) throw new Error('Invalid ID size');
if (!Checkers.gfySize(config.gfySize)) throw new Error('Invalid Gfy size');
if (!Checkers.maximumFileSize(config.maximumFileSize)) throw new Error('Invalid maximum file size');
// * Optional S3 config
if (config.s3 != null) {
if (!Checkers.s3.endpoint(config.s3.endpoint)) throw new Error('Invalid S3 Endpoint');
if (!Checkers.s3.bucket(config.s3.bucket)) throw new Error('Invalid S3 Bucket');
if (!Checkers.s3.region(config.s3.region)) throw new Error('Invalid S3 Region');
if (!Checkers.s3.credentials.accessKey(config.s3.credentials.accessKey)) throw new Error('Invalid S3 Access key');
if (!Checkers.s3.credentials.secretKey(config.s3.credentials.secretKey)) throw new Error('Invalid S3 Secret key');
}
// * Optional database config(s)
if (config.database != null) {
// these both have the same schema so we can just check both
if (config.database.kind == 'mysql' || config.database.kind == 'postgres') {
if (config.database.options != undefined) {
if (!Checkers.sql.mySql.host(config.database.options.host)) throw new Error('Invalid database host');
if (!Checkers.sql.mySql.user(config.database.options.user)) throw new Error('Invalid databse user');
if (!Checkers.sql.mySql.password(config.database.options.password)) throw new Error('Invalid database password');
if (!Checkers.sql.mySql.database(config.database.options.database)) throw new Error('Invalid database');
if (config.database.kind == 'postgres') {
if (!Checkers.sql.postgres.port((config.database.options as PostgresConfiguration).port)) {
throw new Error("Invalid database port");
}
}
} else throw new Error('Database options missing');
}
}
// * optional rate limit config
if (config.rateLimit != null) {
if (!Checkers.rateLimit.endpoint(config.rateLimit.login)) throw new Error('Invalid Login rate limit configuration');
if (!Checkers.rateLimit.endpoint(config.rateLimit.upload)) throw new Error('Invalid Upload rate limit configuration');
if (!Checkers.rateLimit.endpoint(config.rateLimit.api)) throw new Error('Invalid API rate limit configuration');
}
// All is fine, carry on!
return config;
}
/**
* Save the config file to disk
*/
public static saveConfigFile(): Promise<void> {
return new Promise(async (resolve, reject) => {
try {
// Only save is the config has been parsed
if (!UserConfig._ready) throw new Error('Config not ready to be saved!');
// Write to file
await fs.writeFile(FILEPATH, JSON.stringify(UserConfig._config, null, '\t'));
resolve(void 0);
} catch (err) {
log.error('Failed to save config file!');
reject(err);
}
});
}
/**
* Reads the config file from disk
*/
public static readConfigFile(): Promise<void> {
return new Promise(async (resolve, reject) => {
try {
// Read the file data
const data = (await fs.readFile(FILEPATH)).toString();
// Ensure the config is valid
UserConfig._config = UserConfig.parseConfig(data);
UserConfig._ready = true;
resolve(void 0);
} catch (err) {
log.error('Failed to read config file!');
reject(err);
}
});
}
}