Files
fluxer/packages/config/src/ConfigLoader.tsx
2026-02-17 12:22:36 +00:00

70 lines
2.5 KiB
TypeScript

/*
* Copyright (C) 2026 Fluxer Contributors
*
* This file is part of Fluxer.
*
* Fluxer is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Fluxer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
*/
import {existsSync} from 'node:fs';
import {deepMerge} from '@fluxer/config/src/config_loader/ConfigObjectMerge';
import {buildEnvOverrides} from '@fluxer/config/src/config_loader/EnvironmentOverrides';
import {loadJsonFile} from '@fluxer/config/src/config_loader/JsonConfigReader';
import {deriveEndpointsFromDomain} from '@fluxer/config/src/EndpointDerivation';
import {type MasterConfig, MasterConfigSchema} from '@fluxer/config/src/MasterZodSchema.generated';
const DEFAULT_CONFIG_PATHS = [process.env['FLUXER_CONFIG']].filter((path): path is string => Boolean(path));
let cachedConfig: MasterConfig | null = null;
export async function loadConfig(configPaths: Array<string> = DEFAULT_CONFIG_PATHS): Promise<MasterConfig> {
if (cachedConfig) {
return cachedConfig;
}
if (configPaths.length === 0) {
throw new Error('FLUXER_CONFIG must be set to a JSON config path.');
}
const configPath = configPaths.find((path) => existsSync(path));
if (!configPath) {
throw new Error(`No config file found. Checked FLUXER_CONFIG paths: ${configPaths.join(', ')}`);
}
const raw = loadJsonFile(configPath);
const envOverrides = buildEnvOverrides(process.env, 'FLUXER_CONFIG__');
const merged = deepMerge(raw, envOverrides);
delete merged['$schema'];
const parsedConfig = MasterConfigSchema.parse(merged);
const derived = deriveEndpointsFromDomain(parsedConfig.domain);
const overrides = parsedConfig.endpoint_overrides ?? {};
const endpoints = {...derived, ...overrides};
cachedConfig = {...parsedConfig, endpoints} as MasterConfig;
return cachedConfig;
}
export function getConfig(): MasterConfig {
if (!cachedConfig) {
throw new Error('Config not loaded. Call loadConfig() first.');
}
return cachedConfig;
}
export function resetConfig(): void {
cachedConfig = null;
}