export const CODEX_SANDBOX_AUTH_PRECEDENCE_WARNING =
  "snapshot login present but configured or host credentials take precedence";
export const CODEX_SANDBOX_AUTH_PRECEDENCE_WARNING_LOG_LINE =
  `[paperclip] Warning: ${CODEX_SANDBOX_AUTH_PRECEDENCE_WARNING}.\n`;
export const CODEX_SANDBOX_AUTH_EXISTS_COMMAND =
  'test -f "$HOME/.codex/auth.json"';

export type CodexAuthPrecedenceWinner =
  | "configured_api_key"
  | "host_auth_json"
  | "sandbox_auth_json"
  | "none";

export interface CodexAuthPrecedenceInput {
  configuredApiKey: boolean;
  hostAuthJson: boolean;
  sandboxAuthJson: boolean;
}

export interface CodexAuthPrecedenceResolution {
  winner: CodexAuthPrecedenceWinner;
  sandboxLoginShadowed: boolean;
  shouldWarn: boolean;
}

export function resolveCodexAuthPrecedence(
  input: CodexAuthPrecedenceInput,
): CodexAuthPrecedenceResolution {
  const winner: CodexAuthPrecedenceWinner =
    input.configuredApiKey
      ? "configured_api_key"
      : input.hostAuthJson
        ? "host_auth_json"
        : input.sandboxAuthJson
          ? "sandbox_auth_json"
          : "none";
  const sandboxLoginShadowed =
    input.sandboxAuthJson &&
    (winner === "configured_api_key" || winner === "host_auth_json");

  return {
    winner,
    sandboxLoginShadowed,
    shouldWarn: sandboxLoginShadowed,
  };
}