export type ProviderCommandId = "resume";

/**
 * Declarative command templates for provider-native CLIs.
 *
 * Note: these are NOT Paseo agent IDs. They take provider-native session IDs.
 * Example placeholders:
 * - {sessionId}
 */
export const PROVIDER_COMMAND_TEMPLATES: Record<
  string,
  Partial<Record<ProviderCommandId, string>>
> = {
  codex: {
    resume: "codex resume {sessionId}",
  },
  claude: {
    resume: "claude --resume {sessionId}",
  },
};

function renderTemplate(template: string, vars: Record<string, string>): string {
  return template.replace(/\{(\w+)\}/g, (_match, key: string) => vars[key] ?? "");
}

export function buildProviderCommand(input: {
  provider: string;
  id: ProviderCommandId;
  sessionId: string;
}): string | null {
  const template = PROVIDER_COMMAND_TEMPLATES[input.provider]?.[input.id] ?? null;
  if (!template) {
    return null;
  }
  return renderTemplate(template, { sessionId: input.sessionId });
}