Void/src/lib/configReader.js

75 lines
2.2 KiB
JavaScript

const { join } = require('path');
const { info, error } = require('./logger');
const { existsSync, readFileSync } = require('fs');
const e = (val, type, fn, required = true) => ({ val, type, fn, required });
const envValues = [
e('SECURE', 'boolean', (c, v) => c.core.secure = v),
e('SECRET', 'string', (c, v) => c.core.secret = v),
e('HOST', 'string', (c, v) => c.core.host = v),
e('PORT', 'number', (c, v) => c.core.port = v),
e('DATABASE_URL', 'string', (c, v) => c.core.database_url = v),
e('UPLOADER_LENGTH', 'number', (c, v) => c.uploader.length = v),
e('UPLOADER_DIRECTORY', 'string', (c, v) => c.uploader.directory = v),
e('UPLOADER_BLACKLISTED', 'array', (c, v) => c.uploader.blacklisted = v),
];
module.exports = () => {
if (!existsSync(join(process.cwd(), 'config.toml'))) {
info('CONFIG', 'Reading environment');
return tryReadEnv();
} else {
info('CONFIG', 'Reading config file');
const str = readFileSync(join(process.cwd(), 'config.toml'), 'utf8');
const parsed = require('@iarna/toml/parse-string')(str);
return parsed;
}
};
function tryReadEnv() {
const config = {
core: {
secure: undefined,
secret: undefined,
host: undefined,
port: undefined,
database_url: undefined,
},
uploader: {
length: undefined,
directory: undefined,
blacklisted: undefined
}
};
for (let i = 0, L = envValues.length; i !== L; ++i) {
const envValue = envValues[i];
let value = process.env[envValue.val];
if (envValue.required && !value) {
error('CONFIG', `There is no config file or required environment variables (${envValue.val})... exiting...`);
process.exit(1);
}
envValues[i].fn(config, value);
if (envValue.type === 'number') value = parseToNumber(value);
else if (envValue.type === 'boolean') value = parseToBoolean(value);
else if (envValue.type === 'array') value = parseToArray(value);
envValues[i].fn(config, value);
}
return config;
}
function parseToNumber(value) {
const number = Number(value);
if (isNaN(number)) return undefined;
return number;
}
function parseToBoolean(value) {
if (!value || value === 'false') return false;
else return true;
}
function parseToArray(value) {
return value.split(',');
}