import { readFile } from "fs/promises";
import { existsSync } from "fs";
import { parse as parseYaml } from "yaml";
import { ReplicantConfig, DEFAULT_CONFIG, UiConfig } from "../types/config.js";
/**
* Load configuration from REPLICANT_CONFIG environment variable path
* Falls back to defaults if not set or file doesn't exist
*/
export async function loadConfig(): Promise<ReplicantConfig> {
const configPath = process.env.REPLICANT_CONFIG;
if (!configPath) {
return DEFAULT_CONFIG;
}
if (!existsSync(configPath)) {
console.warn(`REPLICANT_CONFIG set but file not found: ${configPath}. Using defaults.`);
return DEFAULT_CONFIG;
}
try {
const content = await readFile(configPath, "utf-8");
const parsed = parseYaml(content) as Partial<ReplicantConfig> | null;
if (!parsed) {
return DEFAULT_CONFIG;
}
// Deep merge with defaults
return {
ui: mergeUiConfig(DEFAULT_CONFIG.ui, parsed.ui),
};
} catch (error) {
const message = error instanceof Error ? error.message : String(error);
console.warn(`Failed to parse REPLICANT_CONFIG at ${configPath}: ${message}. Using defaults.`);
return DEFAULT_CONFIG;
}
}
function mergeUiConfig(defaults: UiConfig, overrides?: Partial<UiConfig>): UiConfig {
if (!overrides) {
return defaults;
}
return {
visualModePackages: overrides.visualModePackages ?? defaults.visualModePackages,
autoFallbackScreenshot: overrides.autoFallbackScreenshot ?? defaults.autoFallbackScreenshot,
includeBase64: overrides.includeBase64 ?? defaults.includeBase64,
};
}
/**
* ConfigManager holds the loaded configuration and provides access to it
*/
export class ConfigManager {
private config: ReplicantConfig = DEFAULT_CONFIG;
async load(): Promise<void> {
this.config = await loadConfig();
}
get(): ReplicantConfig {
return this.config;
}
getUiConfig(): UiConfig {
return this.config.ui;
}
isVisualModePackage(packageName: string): boolean {
return this.config.ui.visualModePackages.includes(packageName);
}
}
