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| class ConfigLoader {
private layers: Map<ConfigLevel, ConfigLayer> = new Map();
private schema: ConfigSchema[] = [];
private cache: Map<string, any> = new Map();
constructor(schema: ConfigSchema[]) {
this.schema = schema;
}
async loadAll(options: LoadOptions): Promise<void> {
await this.loadDefaultLayer();
if (options.globalConfigPath) {
await this.loadGlobalLayer(options.globalConfigPath);
}
if (options.projectConfigPath) {
await this.loadProjectLayer(options.projectConfigPath);
}
await this.loadEnvironmentLayer();
if (options.cliArgs) {
await this.loadCommandLineLayer(options.cliArgs);
}
this.validate();
this.buildCache();
}
private async loadDefaultLayer(): Promise<void> {
const defaultData = this.schema.reduce((acc, field) => {
if (field.default !== undefined) {
acc[field.key] = field.default;
}
return acc;
}, {} as Record<string, any>);
this.layers.set(ConfigLevel.Default, {
level: ConfigLevel.Default,
source: 'builtin',
data: defaultData,
priority: 0,
loadedAt: new Date(),
});
}
private async loadGlobalLayer(configPath: string): Promise<void> {
try {
const content = await fs.promises.readFile(configPath, 'utf-8');
const data = yaml.parse(content);
this.layers.set(ConfigLevel.Global, {
level: ConfigLevel.Global,
source: configPath,
data: this.interpolateEnvVars(data),
priority: 1,
loadedAt: new Date(),
});
} catch (error) {
console.debug('Global config not found:', configPath);
}
}
private async loadProjectLayer(configPath: string): Promise<void> {
try {
const content = await fs.promises.readFile(configPath, 'utf-8');
const data = yaml.parse(content);
this.layers.set(ConfigLevel.Project, {
level: ConfigLevel.Project,
source: configPath,
data: this.interpolateEnvVars(data),
priority: 2,
loadedAt: new Date(),
});
} catch (error) {
console.debug('Project config not found:', configPath);
}
}
private async loadEnvironmentLayer(): Promise<void> {
const envData: Record<string, any> = {};
const prefix = 'OPENCLAW_';
for (const [key, value] of Object.entries(process.env)) {
if (key.startsWith(prefix)) {
const configKey = key.substring(prefix.length).toLowerCase();
envData[configKey] = this.parseEnvValue(value);
}
}
this.layers.set(ConfigLevel.Environment, {
level: ConfigLevel.Environment,
source: 'environment',
data: envData,
priority: 3,
loadedAt: new Date(),
});
}
private async loadCommandLineLayer(args: string[]): Promise<void> {
const cliData: Record<string, any> = {};
for (let i = 0; i < args.length; i++) {
const arg = args[i];
if (arg.startsWith('--')) {
const [key, value] = arg.substring(2).split('=');
const configKey = key.toLowerCase();
cliData[configKey] = value !== undefined ? this.parseCliValue(value) : true;
}
}
this.layers.set(ConfigLevel.CommandLine, {
level: ConfigLevel.CommandLine,
source: 'cli',
data: cliData,
priority: 4,
loadedAt: new Date(),
});
}
private interpolateEnvVars(data: Record<string, any>): Record<string, any> {
return JSON.parse(JSON.stringify(data, (key, value) => {
if (typeof value === 'string' && value.includes('${')) {
return value.replace(/\$\{([^}]+)\}/g, (_, varName) => {
return process.env[varName] || value;
});
}
return value;
}));
}
private parseEnvValue(value: string): any {
if (value === 'true') return true;
if (value === 'false') return false;
if (/^\d+$/.test(value)) return parseInt(value);
if (/^\d+\.\d+$/.test(value)) return parseFloat(value);
return value;
}
private parseCliValue(value: string): any {
if (value === 'true') return true;
if (value === 'false') return false;
if (/^\d+$/.test(value)) return parseInt(value);
return value;
}
private validate(): void {
const config = this.getMergedConfig();
for (const field of this.schema) {
if (field.required && config[field.key] === undefined) {
throw new ConfigError(
`Missing required config: ${field.key}`
);
}
const value = config[field.key];
if (value !== undefined && !this.checkType(value, field.type)) {
throw new ConfigError(
`Invalid type for ${field.key}: expected ${field.type}, got ${typeof value}`
);
}
if (typeof value === 'number') {
if (field.min !== undefined && value < field.min) {
throw new ConfigError(
`${field.key} must be >= ${field.min}`
);
}
if (field.max !== undefined && value > field.max) {
throw new ConfigError(
`${field.key} must be <= ${field.max}`
);
}
}
if (field.enum && !field.enum.includes(value)) {
throw new ConfigError(
`${field.key} must be one of: ${field.enum.join(', ')}`
);
}
}
}
private checkType(value: any, type: string): boolean {
switch (type) {
case 'string': return typeof value === 'string';
case 'number': return typeof value === 'number';
case 'boolean': return typeof value === 'boolean';
case 'object': return typeof value === 'object' && value !== null;
case 'array': return Array.isArray(value);
default: return true;
}
}
private buildCache(): void {
const config = this.getMergedConfig();
for (const [key, value] of Object.entries(config)) {
this.cache.set(key, value);
}
}
private getMergedConfig(): Record<string, any> {
const result: Record<string, any> = {};
const sortedLayers = Array.from(this.layers.values())
.sort((a, b) => a.priority - b.priority);
for (const layer of sortedLayers) {
Object.assign(result, layer.data);
}
return result;
}
get<T>(key: string, defaultValue?: T): T {
if (this.cache.has(key)) {
return this.cache.get(key);
}
if (defaultValue !== undefined) {
return defaultValue;
}
throw new ConfigError(`Config not found: ${key}`);
}
getSource(key: string): string | undefined {
const sortedLayers = Array.from(this.layers.values())
.sort((a, b) => b.priority - a.priority);
for (const layer of sortedLayers) {
if (key in layer.data) {
return layer.source;
}
}
return undefined;
}
getAll(): Record<string, any> {
return Object.fromEntries(this.cache);
}
}
interface LoadOptions {
globalConfigPath?: string;
projectConfigPath?: string;
cliArgs?: string[];
}
class ConfigError extends Error {
constructor(message: string) {
super(message);
this.name = 'ConfigError';
}
}
|