import cachedir from "cachedir";
import { join, dirname } from "node:path";
import { fileURLToPath } from "node:url";
import { existsSync } from "node:fs";
const __dirname = dirname(fileURLToPath(import.meta.url));
export const DEFAULT_CACHE_NAME = "drawio-mcp-server";
export interface AssetConfig {
readonly assetPath?: string;
}
export function getCacheDir(customPath?: string): string {
if (customPath) {
return customPath;
}
const dir = cachedir(DEFAULT_CACHE_NAME);
if (!dir) {
throw new Error(
"Could not determine cache directory. Use --asset-path to specify one.",
);
}
return dir;
}
export function getAssetRoot(config: AssetConfig): string {
const cacheDir = getCacheDir(config.assetPath);
return join(cacheDir, "webapp");
}
export function assetsExist(config: AssetConfig): boolean {
const assetRoot = getAssetRoot(config);
const indexPath = join(assetRoot, "index.html");
return existsSync(indexPath);
}
export function getLocalPluginPath(): string {
return join(__dirname, "..", "..", "build", "plugin", "mcp-plugin.js");
}
export function isUsingLocalAssets(config: AssetConfig): boolean {
return assetsExist(config);
}
