export const OPENCODE_GO_OPENAI_BASE_URL = "https://opencode.ai/zen/go/v1";
export const OPENCODE_GO_ANTHROPIC_BASE_URL = "https://opencode.ai/zen/go";

function normalizeBaseUrl(baseUrl: string | undefined): string {
  return (baseUrl ?? "").trim().replace(/\/+$/, "");
}

export function normalizeOpencodeGoBaseUrl(params: {
  api?: string | null;
  baseUrl?: string;
}): string | undefined {
  const normalized = normalizeBaseUrl(params.baseUrl);
  if (!normalized) {
    return undefined;
  }
  if (normalized === OPENCODE_GO_OPENAI_BASE_URL) {
    return OPENCODE_GO_OPENAI_BASE_URL;
  }
  if (normalized === OPENCODE_GO_ANTHROPIC_BASE_URL) {
    return OPENCODE_GO_ANTHROPIC_BASE_URL;
  }
  if (normalized === "https://opencode.ai/go") {
    return OPENCODE_GO_ANTHROPIC_BASE_URL;
  }
  if (normalized === "https://opencode.ai/go/v1") {
    return params.api === "anthropic-messages"
      ? OPENCODE_GO_ANTHROPIC_BASE_URL
      : OPENCODE_GO_OPENAI_BASE_URL;
  }
  return undefined;
}