<?php
/**
 * Initialize the email API.
 *
 * @package ET\Core\API\Email
 */

if ( ! function_exists( 'et_core_api_email_init' ) ) :
	/**
	 * Initialize the email API.
	 *
	 * @return void
	 */
	function et_core_api_email_init() {
		if ( defined( 'ET_CORE_UPDATED' ) ) {
			et_core_api_email_fetch_all_lists();
		}
	}
endif;


if ( ! function_exists( 'et_core_api_email_fetch_all_lists' ) ) :
	/**
	 * Fetch the latest email lists for all provider accounts and update the database accordingly.
	 *
	 * @since 3.4
	 */
	function et_core_api_email_fetch_all_lists() {
		$providers    = ET_Core_API_Email_Providers::instance();
		$all_accounts = $providers->accounts();

		foreach ( $all_accounts as $provider_slug => $accounts ) {
			$provider = $providers->get( $provider_slug, '' );

			foreach ( $accounts as $account ) {
				$provider->set_account_name( $account );
				$provider->fetch_subscriber_lists();
			}
		}
	}
endif;


if ( ! function_exists( 'et_core_api_email_fetch_lists' ) ) :
	/**
	 * Fetch the latest email lists for a provider account and update the database accordingly.
	 *
	 * @param string $name_or_slug The provider name or slug.
	 * @param string $account      The account name.
	 * @param string $api_key      Optional. The api key (if fetch succeeds, the key will be saved).
	 *
	 * @return string 'success' if successful, an error message otherwise.
	 */
	function et_core_api_email_fetch_lists( $name_or_slug, $account, $api_key = '' ) {
		if ( ! empty( $api_key ) ) {
			// The account provided either doesn't exist yet or has a new api key.
			et_core_security_check( 'manage_options' );
		}

		if ( empty( $name_or_slug ) || empty( $account ) ) {
			return __( 'ERROR: Invalid arguments.', 'et_core' );
		}

		$providers = ET_Core_API_Email_Providers::instance();
		$provider  = $providers->get( $name_or_slug, $account, 'builder' );

		if ( ! $provider ) {
			return '';
		}

		if ( is_array( $api_key ) ) {
			foreach ( $api_key as $field_name => $value ) {
				$provider->data[ $field_name ] = sanitize_text_field( $value );
			}
		} elseif ( '' !== $api_key ) {
			$provider->data['api_key'] = sanitize_text_field( $api_key );
		}

		// Set account name if not already set.
		if ( ! $provider->account_name ) {
			$provider->set_account_name( $account );
		}

		// Save account data before initiating OAuth flow so it exists when callback returns.
		$provider->save_data();

		return $provider->fetch_subscriber_lists();
	}
endif;


if ( ! function_exists( 'et_core_api_email_providers' ) ) :
	/**
	 * Get the email providers instance.
	 *
	 * @deprecated {@see ET_Core_API_Email_Providers::instance()}
	 *
	 * @return ET_Core_API_Email_Providers
	 */
	function et_core_api_email_providers() {
		return ET_Core_API_Email_Providers::instance();
	}
endif;


if ( ! function_exists( 'et_core_api_email_remove_account' ) ) :
	/**
	 * Delete an existing provider account.
	 *
	 * @param string $name_or_slug The provider name or slug.
	 * @param string $account      The account name.
	 */
	function et_core_api_email_remove_account( $name_or_slug, $account ) {
		et_core_security_check( 'manage_options' );

		if ( empty( $name_or_slug ) || empty( $account ) ) {
			return;
		}

		// If the account being removed is a legacy account (pre-dates core api), remove the old data.
		switch ( $account ) {
			case 'Divi Builder Aweber':
				et_delete_option( 'divi_aweber_consumer_key' );
				et_delete_option( 'divi_aweber_consumer_secret' );
				et_delete_option( 'divi_aweber_access_key' );
				et_delete_option( 'divi_aweber_access_secret' );
				break;
			case 'Divi Builder Plugin Aweber':
				$opts = (array) get_option( 'et_pb_builder_options' );
				unset( $opts['aweber_consumer_key'], $opts['aweber_consumer_secret'], $opts['aweber_access_key'], $opts['aweber_access_secret'] );
				update_option( 'et_pb_builder_options', $opts );
				break;
			case 'Divi Builder MailChimp':
				et_delete_option( 'divi_mailchimp_api_key' );
				break;
			case 'Divi Builder Plugin MailChimp':
				$options = (array) get_option( 'et_pb_builder_options' );
				unset( $options['newsletter_main_mailchimp_key'] );
				update_option( 'et_pb_builder_options', $options );
				break;
		}

		$providers = ET_Core_API_Email_Providers::instance();
		$provider  = $providers->get( $name_or_slug, $account );

		if ( $provider ) {
			$provider->delete();
		}
	}
endif;
