/**
 * Base-URL resolution for the Gemini surfaces that are NOT a single
 * `generateContent` URL: the Interactions API (`/v1beta/interactions`) and the
 * Files API (`/upload/v1beta/files`, `/v1beta/files/<id>`). They live on two
 * different path roots, so one base override (`VCLAW_GEMINI_API_BASE`) covers
 * both and lets a test point a local http server at every route.
 *
 * `VCLAW_GEMINI_API_ENDPOINT` is deliberately NOT read here: that variable is a
 * full `models/<id>:generateContent` URL and keeps driving the static paths.
 */

export const DEFAULT_GEMINI_API_BASE = 'https://generativelanguage.googleapis.com';

export function resolveGeminiApiBase(env: NodeJS.ProcessEnv = process.env): string {
  const raw = env.VCLAW_GEMINI_API_BASE?.trim();
  const base = raw && raw !== '' ? raw : DEFAULT_GEMINI_API_BASE;
  return base.replace(/\/+$/, '');
}

/** Append `?key=` / `&key=` the same way every other Gemini call in the repo does. */
export function withKey(url: string, key: string): string {
  return `${url}${url.includes('?') ? '&' : '?'}key=${encodeURIComponent(key)}`;
}