export interface LaunchTemplateExportRequest {
  server_url: string;
  build_id?: string;
  strain_card_id?: string;
  campaign?: string;
  ami_id?: string;
  instance_type?: string;
  region?: string;
}

export interface LaunchTemplateExportResponse {
  success: boolean;
  genesis_snapshot_hash: string;
  strain_card_id: string;
  launch_template_json: string;
  user_data_sh: string;
  asg_example_json: string;
  error?: string;
}

export const LAUNCH_TEMPLATE_FILES = [
  { id: 'launch-template', label: 'launch-template.json', field: 'launch_template_json' as const },
  { id: 'user-data', label: 'user-data.sh', field: 'user_data_sh' as const },
  { id: 'asg-example', label: 'asg-example.json', field: 'asg_example_json' as const },
] as const;

export function launchTemplateZipName(campaign?: string): string {
  const slug = (campaign ?? '').trim().toLowerCase().replace(/[^a-z0-9._-]+/g, '-').replace(/^-+|-+$/g, '');
  return slug ? `aetherforge-launch-template-${slug}.zip` : 'aetherforge-launch-template-genesis.zip';
}

export function downloadLaunchTemplateFile(
  resp: LaunchTemplateExportResponse,
  file: (typeof LAUNCH_TEMPLATE_FILES)[number]['field'],
  filename: string,
): void {
  const content = resp[file];
  if (!content) return;
  const blob = new Blob([content], { type: file === 'user_data_sh' ? 'text/x-shellscript' : 'application/json' });
  const url = URL.createObjectURL(blob);
  const a = document.createElement('a');
  a.href = url;
  a.download = filename;
  a.click();
  URL.revokeObjectURL(url);
}