import pick from 'lodash.pick';
import { ExpoConfig, ConfigContext } from '@expo/config';
import dotenv from 'dotenv';

const variables = ['SENTRY_AUTH_TOKEN', 'STAGE', 'SENTRY_PROJECT', 'SENTRY_ORG'];

dotenv.config();

/**
 * Retrieves the config for the application from the environment
 *
 * @returns The environment variables if they are found in the environment
 */
export function getConfig() {
  const environmentVariables = pick(process.env, variables) as Record<string, string>;
  const keys = Object.keys(environmentVariables);

  // if (keys.length !== variables.length) {
  //   throw new Error('Missing environment variables');
  // }

  return environmentVariables;
}

export default (context: ConfigContext): Partial<ExpoConfig> => {
  const Config = getConfig();

  return {
    ...context.config,
    hooks: {
      ...context.config.hooks,
      postPublish: [
        {
          file: 'sentry-expo/upload-sourcemaps',
          config: {
            organization: Config.SENTRY_ORG,
            project: Config.SENTRY_PROJECT,
            authToken: Config.SENTRY_AUTH_TOKEN,
          },
        },
      ],
    },
    extra: {
      ...context.config.extra,
      Config: {
        stage: Config.STAGE,
      },
    },
  };
};