'use strict';

/**
 * Email.js service
 *
 * @description: A set of functions similar to controller's actions to avoid code duplication.
 */

const _ = require('lodash');

const createDefaultEnvConfig = async env => {
  const pluginStore = strapi.store({
    environment: env,
    type: 'plugin',
    name: 'email',
  });

  const provider = _.find(strapi.plugins.email.config.providers, {
    provider: 'sendmail',
  });
  const value = _.assign({}, provider, {});

  await pluginStore.set({ key: 'provider', value });
  return await strapi
    .store({
      environment: env,
      type: 'plugin',
      name: 'email',
    })
    .get({ key: 'provider' });
};

const getProviderConfig = async env => {
  let config = await strapi
    .store({
      environment: env,
      type: 'plugin',
      name: 'email',
    })
    .get({ key: 'provider' });

  if (!config) {
    config = await createDefaultEnvConfig(env);
  }

  return config;
};

module.exports = {
  getProviderConfig,
  async send(options, config) {
    // Get email provider settings to configure the provider to use.
    if (!config) {
      config = await getProviderConfig(strapi.config.environment);
    }

    const provider = _.find(strapi.plugins.email.config.providers, {
      provider: config.provider,
    });

    if (!provider) {
      throw new Error(
        `The provider package isn't installed. Please run \`npm install strapi-provider-email-${config.provider}\``
      );
    }

    const actions = await provider.init(config);

    // Execute email function of the provider for all files.
    return actions.send(options);
  },
};