import type { Daytona } from '@daytonaio/sdk';

export const DAYTONA_DEFAULT_WORKDIR = '/home/daytona';

export type DaytonaClientOptions = NonNullable<
  ConstructorParameters<typeof Daytona>[0]
>;

export type DaytonaRequiredConfig = {
  apiKey: string;
  clientOptions: DaytonaClientOptions;
};

export type DaytonaRunnerPathsConfig = {
  workdir: string;
};

export function daytonaClientOptions(apiKey: string): DaytonaClientOptions {
  return {
    apiKey,
    ...(process.env.DAYTONA_API_URL?.trim()
      ? { apiUrl: process.env.DAYTONA_API_URL.trim() }
      : {}),
    ...(process.env.DAYTONA_TARGET?.trim()
      ? { target: process.env.DAYTONA_TARGET.trim() }
      : {}),
  };
}

export function loadDaytonaRequiredConfig(
  options: {
    environment?: 'preview' | 'production' | null;
  } = {},
): DaytonaRequiredConfig {
  const environment = options.environment ?? null;
  const keyName =
    environment === 'preview' ? 'DAYTONA_API_KEY_PREVIEW' : 'DAYTONA_API_KEY';
  const apiKey = process.env[keyName]?.trim();
  if (!apiKey) {
    throw new Error(`Missing required Daytona configuration: ${keyName}.`);
  }
  return {
    apiKey,
    clientOptions: daytonaClientOptions(apiKey),
  };
}

export function loadDaytonaRunnerPathsConfig(): DaytonaRunnerPathsConfig {
  return {
    workdir: process.env.DAYTONA_WORKDIR?.trim() || DAYTONA_DEFAULT_WORKDIR,
  };
}