<?php

/**
 * Class Hustle_ActiveCampaign_Form_Hooks
 * Define the form hooks that are used by ActiveCampaign
 *
 * @since 4.0
 */
class Hustle_ActiveCampaign_Form_Hooks extends Hustle_Provider_Form_Hooks_Abstract {


	/**
	 * Add ActiveCampaign data to entry.
	 *
	 * @since 4.0
	 *
	 * @param array $submitted_data
	 * @return array
	 */
	public function add_entry_fields( $submitted_data ) {

		$addon                  = $this->addon;
		$module_id              = $this->module_id;
		$form_settings_instance = $this->form_settings_instance;
		$addon_setting          = $form_settings_instance->get_form_settings_values();

		/**
		 * Filter submitted form data to be processed
		 *
		 * @since 4.0
		 *
		 * @param array                                    $submitted_data
		 * @param int                                      $module_id                current module_id
		 * @param Hustle_ActiveCampaign_Form_Settings      $form_settings_instance
		 */
		$submitted_data = apply_filters(
			'hustle_provider_activecampaign_form_submitted_data',
			$submitted_data,
			$module_id,
			$form_settings_instance
		);

		try {

			$global_multi_id = $addon_setting['selected_global_multi_id'];
			$api_url         = $addon->get_setting( 'api_url', '', $global_multi_id );
			$api_key         = $addon->get_setting( 'api_key', '', $global_multi_id );
			$api             = $addon::api( $api_url, $api_key );

			// check if email exists
			if ( empty( $submitted_data['email'] ) ) {
				throw new Exception( __( 'Required Field "email" was not filled by the user.', 'hustle' ) );
			}

			// check module.
			// used for custom field label
			$module = new Hustle_Module_Model( $module_id );
			if ( is_wp_error( $module ) ) {
				return $module;
			}
			// set up basics
			$submitted_data = $this->check_legacy( $submitted_data );
			$submitted_data = $this->_check_default_fields( $submitted_data );
			$sign_up        = $addon_setting['sign_up_to'];
			$is_list        = empty( $addon_setting['sign_up_to'] ) || 'form' !== $addon_setting['sign_up_to'];
			$id             = $is_list ? $addon_setting['list_id'] : $addon_setting['form_id'];
			$sign_up_to     = ! empty( $sign_up ) ? $sign_up : 'list';

			// set up custom fields
			$custom_fields = array_diff_key(
				$submitted_data,
				array(
					'first_name' => '',
					'last_name'  => '',
					'email'      => '',
					'phone'      => '',
				)
			);

			$orig_data             = $submitted_data;
			$existed_custom_fields = $api->get_custom_fields();

			$extra_custom_fields = array_diff(
				array_keys( array_change_key_case( $custom_fields, CASE_UPPER ) ),
				wp_list_pluck( $existed_custom_fields, 'perstag' )
			);

			$reserved_fields = array( 'FIRSTNAME', 'LASTNAME', 'EMAIL', 'PHONE' );

			if ( $extra_custom_fields ) {

				$form_fields     = $module->get_form_fields();
				$field_labels    = wp_list_pluck( $form_fields, 'label', 'name' );
				$prepared_fields = array();
				$module          = new Hustle_Module_Model( $module_id );

				foreach ( $extra_custom_fields as $new_field ) {

					if ( ! in_array( strtoupper( $new_field ), $reserved_fields, true ) ) {
						$type                          = isset( $form_fields[ $new_field ] ) ? $this->get_field_type( $form_fields[ $new_field ]['type'] ) : 1;
						$prepared_fields[ $new_field ] = array(
							'label' => ! empty( $field_labels[ $new_field ] ) ? $field_labels[ $new_field ] : $new_field,
							'type'  => $type,
						);
					}
				}
				$api->add_custom_fields( $prepared_fields, $id, $module );
			}

			// store the new custom fields key
			if ( ! empty( $custom_fields ) ) {
				foreach ( $custom_fields as $key => $value ) {
					if ( ! in_array( strtoupper( $key ), $reserved_fields, true ) ) {
						$key                    = 'field[%' . strtoupper( $key ) . '%,0]';
						$submitted_data[ $key ] = $value;
					}
				}
			}

			/**
			 * Fires before adding subscriber
			 *
			 * @since 4.0.2
			 *
			 * @param int    $module_id
			 * @param array  $submitted_data
			 * @param object $form_settings_instance
			 */
			do_action(
				'hustle_provider_activecampaign_before_add_subscriber',
				$module_id,
				$submitted_data,
				$form_settings_instance
			);

			// subscribe
			$res = $api->subscribe( $id, $submitted_data, $module, $orig_data, $sign_up_to );

			/**
			 * Fires after adding subscriber
			 *
			 * @since 4.0.2
			 *
			 * @param int    $module_id
			 * @param array  $submitted_data
			 * @param mixed  $res
			 * @param object $form_settings_instance
			 */
			do_action(
				'hustle_provider_activecampaign_after_add_subscriber',
				$module_id,
				$submitted_data,
				$res,
				$form_settings_instance
			);

			// result validation
			if ( is_wp_error( $res ) ) {
				$is_sent       = false;
				$member_status = __( 'Member could not be subscribed.', 'hustle' );
				$error_detail  = $res->get_error_message();
			} else {
				$member_status = $res['result_message'];
				$is_sent       = true;
			}

			$entry_fields = array(
				array(
					'name'  => 'status',
					'value' => array(
						'is_sent'       => $is_sent,
						'description'   => $is_sent ? __( 'Successfully added or updated member on ActiveCampaign list', 'hustle' ) : $error_detail,
						'member_status' => $member_status,
					),
				),
			);
		} catch ( Exception $e ) {
			$entry_fields = $this->exception( $e );
		}

		if ( ! empty( $is_list ) && ! empty( $addon_setting['list_name'] ) ) {
			$entry_fields[0]['value']['list_name'] = $addon_setting['list_name'];
		}

		if ( isset( $is_list ) && ! $is_list && ! empty( $addon_setting['form_name'] ) ) {
			$entry_fields[0]['value']['form_name'] = $addon_setting['form_name'];
		}

		$entry_fields = apply_filters(
			'hustle_provider_activecampaign_entry_fields',
			$entry_fields,
			$module_id,
			$submitted_data,
			$form_settings_instance
		);

		return $entry_fields;
	}

	/**
	 * Check whether the email is already subscribed.
	 *
	 * @since 4.0
	 *
	 * @param $submitted_data
	 * @return bool
	 */
	public function on_form_submit( $submitted_data, $allow_subscribed = true ) {

		$is_success             = true;
		$module_id              = $this->module_id;
		$form_settings_instance = $this->form_settings_instance;
		$addon                  = $this->addon;
		$addon_setting_values   = $form_settings_instance->get_form_settings_values();
		$global_multi_id        = $addon_setting_values['selected_global_multi_id'];
		$api_url                = $addon->get_setting( 'api_url', '', $global_multi_id );
		$api_key                = $addon->get_setting( 'api_key', '', $global_multi_id );
		$api                    = $addon::api( $api_url, $api_key );

		if ( empty( $submitted_data['email'] ) ) {
			return __( 'Required Field "email" was not filled by the user.', 'hustle' );
		}

		if ( ! $allow_subscribed ) {
			/**
			 * Filter submitted form data to be processed
			 *
			 * @since 4.0.2
			 *
			 * @param array                                    $submitted_data
			 * @param int                                      $module_id                current module_id
			 * @param Hustle_ActiveCampaign_Form_Settings $form_settings_instance
			 */
			$submitted_data = apply_filters(
				'hustle_provider_activecampaign_form_submitted_data_before_validation',
				$submitted_data,
				$module_id,
				$form_settings_instance
			);

			// triggers exception if not found.
			$is_sub = $this->get_subscriber(
				$api,
				array(
					'email' => $submitted_data['email'],
					'list'  => $addon_setting_values['list_id'],
				)
			);

			if ( true === $is_sub ) {
				$is_success = self::ALREADY_SUBSCRIBED_ERROR;
			}
		}

		/**
		 * Return `true` if success, or **(string) error message** on fail
		 *
		 * @since 4.0.2
		 *
		 * @param bool                                     $is_success
		 * @param int                                      $module_id
		 * @param array                                    $submitted_data
		 * @param Hustle_ActiveCampaign_Form_Settings      $form_settings_instance
		 */
		$is_success = apply_filters(
			'hustle_provider_activecampaign_form_submitted_data_after_validation',
			$is_success,
			$module_id,
			$submitted_data,
			$form_settings_instance
		);

		// process filter
		if ( true !== $is_success ) {
			// only update `_submit_form_error_message` when not empty
			if ( ! empty( $is_success ) ) {
				$this->_submit_form_error_message = (string) $is_success;
			}
			return $is_success;
		}

		return true;

	}

	/**
	 * Get subscriber for providers
	 *
	 * This method is to be inherited
	 * And extended by child classes.
	 *
	 * Make use of the property `$_subscriber`
	 * Method to omit double api calls
	 *
	 * @since 4.0.2
	 *
	 * @param   object $api
	 * @param   mixed  $data
	 * @return  mixed   array/object API response on queried subscriber
	 */
	protected function get_subscriber( $api, $data ) {
		if ( empty( $this->_subscriber ) && ! isset( $this->_subscriber[ md5( $data['email'] ) ] ) ) {
			$this->_subscriber[ md5( $data['email'] ) ] = $api->email_exist( $data['email'], $data['list'] );
		}

		return $this->_subscriber[ md5( $data['email'] ) ];
	}

	/**
	 * Get supported fields
	 *
	 * This method is to be inherited
	 * and extended by child classes.
	 *
	 * List the fields supported by the
	 * provider
	 *
	 * @since 4.1
	 *
	 * @param string hustle field type
	 * @return string Api field type
	 */
	protected function get_field_type( $type ) {

		switch ( $type ) {
			case 'datepicker':
				$type = 9;
				break;
			default:
				$type = 1;
				break;
		}

		return $type;
	}

	/*
	 * Check for default API fields
	 *
	 * @since 4.0
	 *
	 * @return array
	 */
	private function _check_default_fields( $data ) {
		$uppercase = array_change_key_case( $data, CASE_UPPER );
		if ( isset( $uppercase['FIRSTNAME'] ) && ( ! isset( $data['first_name'] ) || empty( $data['first_name'] ) ) ) {
			$data['first_name'] = $uppercase['FIRSTNAME'];
		}
		if ( isset( $uppercase['LASTNAME'] ) && ( ! isset( $data['last_name'] ) || empty( $data['last_name'] ) ) ) {
			$data['last_name'] = $uppercase['LASTNAME'];
		}
		if ( isset( $uppercase['PHONE'] ) && ( ! isset( $data['phone'] ) || empty( $data['phone'] ) ) ) {
			$data['phone'] = $uppercase['PHONE'];
		}

		return $data;
	}
}
