import { logger } from '../logger';
import { get, getLanguageList, getManagerList } from '../manager';
import * as options from './options';
import type { AllConfig, RenovateConfig, RenovateConfigStage } from './types';
import { mergeChildConfig } from './utils';

export { mergeChildConfig };

export function getManagerConfig(
  config: RenovateConfig,
  manager: string
): RenovateConfig {
  let managerConfig: RenovateConfig = {
    ...config,
    language: null,
    manager: null,
  };
  const language = get(manager, 'language');
  if (language) {
    managerConfig = mergeChildConfig(managerConfig, config[language]);
  }
  managerConfig = mergeChildConfig(managerConfig, config[manager]);
  for (const i of getLanguageList().concat(getManagerList())) {
    delete managerConfig[i];
  }
  managerConfig.language = language;
  managerConfig.manager = manager;
  return managerConfig;
}

export function filterConfig(
  inputConfig: AllConfig,
  targetStage: RenovateConfigStage
): AllConfig {
  logger.trace({ config: inputConfig }, `filterConfig('${targetStage}')`);
  const outputConfig: RenovateConfig = { ...inputConfig };
  const stages = ['global', 'repository', 'package', 'branch', 'pr'];
  const targetIndex = stages.indexOf(targetStage);
  for (const option of options.getOptions()) {
    const optionIndex = stages.indexOf(option.stage);
    if (optionIndex !== -1 && optionIndex < targetIndex) {
      delete outputConfig[option.name];
    }
  }
  return outputConfig;
}