<?php

namespace WeDevs\ERP\Settings;

use WeDevs\ERP\CRM\Admin\CRMSettings;
use WeDevs\ERP\Framework\Traits\Ajax as Trait_Ajax;
use WeDevs\ERP\Framework\Traits\Hooker;
use WeDevs\ERP\EmailMailgun;

/**
 * Ajax handler class
 *
 * @since 1.9.0
 */
class Ajax {

	use Trait_Ajax;
	use Hooker;

	/**
	 * Bind all the ajax event for Framework
	 *
	 * @since 1.9.0
	 *
	 * @return void
	 */
	public function __construct() {
		// Common settings.
		$this->action( 'wp_ajax_erp-settings-save', 'erp_settings_save' );
		$this->action( 'wp_ajax_erp-settings-get-data', 'erp_settings_get_data' );

		// Email templates settings.
		$this->action( 'wp_ajax_erp_get_email_templates', 'get_email_templates' );
		$this->action( 'wp_ajax_erp_get_single_email_template', 'get_single_email_template' );
		$this->action( 'wp_ajax_erp_update_email_status', 'update_email_status' );
		$this->action( 'wp_ajax_erp_update_email_template', 'update_email_template' );
		$this->action( 'wp_ajax_erp_smtp_test_connection', 'smtp_test_connection' );
		$this->action( 'wp_ajax_erp_mailgun_test_connection', 'mailgun_test_connection' );
		$this->action( 'wp_ajax_erp_wpmail_test_connection', 'wpmail_test_connection' );
		$this->action( 'wp_ajax_erp_settings_get_email_providers', 'get_email_providers' );

		// License settings.
		$this->action( 'wp_ajax_erp_settings_save_licenses', 'save_licenses' );
	}

	/**
	 * Save Settings Data
	 *
	 * @since 1.9.0
	 *
	 * @return void
	 */
	public function erp_settings_save() {
		$this->verify_nonce( 'erp-settings-nonce' );

		$has_not_permission = ! current_user_can( 'manage_options' );
		$module             = ! empty( $_REQUEST['module'] ) ? sanitize_text_field( wp_unslash( $_REQUEST['module'] ) ) : '';
		$section            = ! empty( $_REQUEST['section'] ) ? sanitize_text_field( wp_unslash( $_REQUEST['section'] ) ) : '';
		$sub_section        = ! empty( $_REQUEST['sub_sub_section'] ) ? sanitize_text_field( wp_unslash( $_REQUEST['sub_sub_section'] ) ) : '';

		switch ( $module ) {
			case 'general':
				$settings = ( new General() );
				break;

			case 'erp-hr':
				$settings           = ( new \WeDevs\ERP\HRM\Settings() );
				$has_not_permission = $has_not_permission && ! current_user_can( 'erp_hr_manager' );
				break;

			case 'erp-ac':
				$settings           = ( new \WeDevs\ERP\Accounting\Classes\Settings() );
				$has_not_permission = $has_not_permission && ! current_user_can( 'erp_ac_manager' );
				break;

			case 'erp-crm':
				$settings           = ( new \WeDevs\ERP\CRM\Admin\Settings() );
				$has_not_permission = $has_not_permission && ! current_user_can( 'erp_crm_manager' );
				break;

			case 'erp-email':
				$settings = new Email();
				break;

			case 'erp-integration':
				$settings = new Integration();
				break;

			default:
				$settings = apply_filters( "erp_settings_save_{$module}_section", $module, $section, $sub_section );
		}

		if ( $has_not_permission ) {
			$this->send_error( erp_get_message( array( 'type' => 'error_permission' ) ) );
		}

		$result = $settings->save( $section );

		if ( is_wp_error( $result ) ) {
			$this->send_error( $result->get_error_message() );
		}

		$this->send_success(
			array(
				'message' => erp_get_message(
					array(
						'type'       => 'save_success',
						'additional' => 'Settings',
					)
				),
			)
		);
	}

	/**
	 * Get Settings Data For Common Sections
	 *
	 * @since 1.9.0
	 *
	 * @return void
	 */
	public function erp_settings_get_data() {
		$this->verify_nonce( 'erp-settings-nonce' );

		if ( ! current_user_can( 'manage_options' ) ) {
			$this->send_error( erp_get_message( array( 'type' => 'error_permission' ) ) );
		}

		$data = Helpers::process_settings_data( $_POST );

		if ( is_wp_error( $data ) ) {
			$this->send_error( erp_get_message( array( 'type' => 'error_process' ) ) );
		}

		$this->send_success( $data );
	}


	/**
	 * Retrieves all email templates
	 *
	 * @since 1.9.0
	 *
	 * @return mixed
	 */
	public function get_email_templates() {
		$this->verify_nonce( 'erp-settings-nonce' );

		if ( ! current_user_can( 'manage_options' ) ) {
			$this->send_error( esc_html__( 'You do not have sufficient permission to do this action', 'erp' ) );
		}

		$email_templates = wperp()->emailer->get_emails();
		$emails          = array();

		$can_not_be_disabled = Helpers::get_fixedly_enabled_email_templates();

		if ( ! is_array( $email_templates ) && ! is_object( $email_templates ) ) {
			$this->send_success( $emails );
		}

		foreach ( $email_templates as $key => $email ) {
			$email_option    = $email->get_option_id();
			$option_value    = get_option( $email_option );
			$disable_allowed = true;
			$is_enabled      = 'no';

			if ( in_array( $email_option, $can_not_be_disabled ) ) {
				$disable_allowed = false;
			}

			if ( isset( $option_value['is_enable'] ) ) {
				$is_enabled = 'yes';
			}

			$email_data = array(
				'id'              => $key,
				'option_id'       => $email_option,
				'name'            => esc_html( $email->get_title() ),
				'description'     => esc_html( $email->get_description() ),
				'is_enabled'      => $is_enabled,
				'disable_allowed' => $disable_allowed,
			);

			if (
				false !== strpos( get_class( $email ), 'HRM' ) ||
				false !== strpos( get_class( $email ), 'ERP_Document' ) ||
				false !== strpos( get_class( $email ), 'ERP_Recruitment' ) ||
				false !== strpos( get_class( $email ), 'Recruitment\\Emails' ) ||
				false !== strpos( get_class( $email ), 'Training' )
			) {
				$emails['hrm'][] = $email_data;
			} elseif ( false !== strpos( get_class( $email ), 'CRM' ) ) {
				$emails['crm'][] = $email_data;
			} elseif ( false !== strpos( get_class( $email ), 'Accounting' ) ) {
				$emails['acct'][] = $email_data;
			}
		}

		$this->send_success( $emails );
	}

	/**
	 * Retrieves a single email template
	 *
	 * @since 1.9.0
	 *
	 * @return mixed
	 */
	public function get_single_email_template() {
		$this->verify_nonce( 'erp-settings-nonce' );

		if ( ! current_user_can( 'manage_options' ) ) {
			$this->send_error( esc_html__( 'You do not have sufficient permission to do this action', 'erp' ) );
		}

		$can_not_be_disabled = Helpers::get_fixedly_enabled_email_templates();

		$template                      = ! empty( $_REQUEST['template'] ) ? sanitize_text_field( wp_unslash( $_REQUEST['template'] ) ) : '';
		$email                         = wperp()->emailer->get_email( $template );
		$option_id                     = $email->get_option_id();
		$email_data                    = get_option( $option_id );
		$email_data['id']              = $option_id;
		$email_data['tags']            = array();
		$email_data['disable_allowed'] = true;

		if ( in_array( $option_id, $can_not_be_disabled ) ) {
			$email_data['disable_allowed'] = false;
		}

		if ( empty( $email_data['is_enable'] ) ) {
			$email_data['is_enable'] = 'no';
		}

		foreach ( $email->find as $key => $find ) {
			$email_data['tags'][] = $find;
		}

		$email_data['body'] = str_replace( "\n", '<br>', $email_data['body'] );

		$this->send_success( $email_data );
	}

	/**
	 * Updates email template
	 *
	 * @since 1.9.0
	 *
	 * @return mixed
	 */
	public function update_email_template() {
		$this->verify_nonce( 'erp-settings-nonce' );

		if ( ! current_user_can( 'manage_options' ) ) {
			$this->send_error( esc_html__( 'You do not have sufficient permission to do this action', 'erp' ) );
		}

		$email_id   = ! empty( $_REQUEST['id'] ) ? sanitize_text_field( wp_unslash( $_REQUEST['id'] ) ) : '';
		$is_enabled = ! empty( $_REQUEST['is_enable'] ) ? sanitize_text_field( wp_unslash( $_REQUEST['is_enable'] ) ) : '';

		if ( empty( $email_id ) ) {
			$this->send_error( __( 'Invalid email template ID', 'erp' ) );
		}

		$option_data = array(
			'subject' => ! empty( $_REQUEST['subject'] ) ? sanitize_text_field( wp_unslash( $_REQUEST['subject'] ) ) : '',
			'heading' => ! empty( $_REQUEST['heading'] ) ? sanitize_text_field( wp_unslash( $_REQUEST['heading'] ) ) : '',
			'body'    => ! empty( $_REQUEST['body'] ) ? wp_kses_post( wp_unslash( $_REQUEST['body'] ) ) : '',
		);

		if ( 'yes' === $is_enabled ) {
			$option_data['is_enable'] = 'yes';
		}

		update_option( $email_id, $option_data );

		$this->send_success( __( 'Template updated successfully', 'erp' ) );
	}

	/**
	 * Updates email status (enable/disable)
	 *
	 * @since 1.9.0
	 *
	 * @return mixed
	 */
	public function update_email_status() {
		$this->verify_nonce( 'erp-settings-nonce' );

		if ( ! current_user_can( 'manage_options' ) ) {
			$this->send_error( esc_html__( 'You do not have sufficient permission to do this action', 'erp' ) );
		}

		$option_id    = ! empty( $_REQUEST['option_id'] ) ? sanitize_text_field( wp_unslash( $_REQUEST['option_id'] ) ) : '';
		$option_value = ! empty( $_REQUEST['option_value'] ) ? sanitize_text_field( wp_unslash( $_REQUEST['option_value'] ) ) : '';

		if ( ! empty( $option_id ) ) {
			$email_option = get_option( $option_id, array() );

			if ( 'yes' === $option_value ) {
				$email_option['is_enable'] = 'yes';
			} else {
				unset( $email_option['is_enable'] );
			}

			update_option( $option_id, $email_option );
		}

		$this->send_success();
	}

	/**
	 * Test connection using SMTP credentials
	 *
	 * @since 1.9.0
	 *
	 * @return mixed
	 */
	public function smtp_test_connection() {
		$this->verify_nonce( 'erp-settings-nonce' );

		if ( ! current_user_can( 'manage_options' ) ) {
			$this->send_error( erp_get_message( array( 'type' => 'error_permission' ) ) );
		}

		if ( empty( $_REQUEST['mail_server'] ) ) {
			$this->send_error( array( 'message' => esc_html__( 'No host address provided', 'erp' ) ) );
		}

		if ( empty( $_REQUEST['port'] ) ) {
			$this->send_error( array( 'message' => esc_html__( 'No port address provided', 'erp' ) ) );
		}

		$authentication = '';

		if ( ! empty( $_REQUEST['authentication'] ) ) {
			if ( empty( $_REQUEST['username'] ) ) {
				$this->send_error( array( 'message' => esc_html__( 'No email address provided', 'erp' ) ) );
			}

			if ( empty( $_REQUEST['password'] ) ) {
				$this->send_error( array( 'message' => esc_html__( 'No email password provided', 'erp' ) ) );
			}

			$authentication = sanitize_text_field( wp_unslash( $_REQUEST['authentication'] ) );
			$username       = sanitize_email( wp_unslash( $_REQUEST['username'] ) );
			$password       = sanitize_text_field( wp_unslash( $_REQUEST['password'] ) );
		}

		$mail_server = str_replace( array( 'https://', 'http://' ), '', esc_url_raw( wp_unslash( $_REQUEST['mail_server'] ) ) );
		$port        = sanitize_text_field( wp_unslash( $_REQUEST['port'] ) );
		$to          = empty( $_REQUEST['test_email'] ) ? get_option( 'admin_email' ) : sanitize_email( wp_unslash( $_REQUEST['test_email'] ) );

		global $phpmailer, $wp_version;

		// (Re)create it, if it's gone missing.
		if ( version_compare( $wp_version, '5.5' ) >= 0 ) {
			if ( ! ( $phpmailer instanceof \PHPMailer\PHPMailer\PHPMailer ) ) {
				require_once ABSPATH . WPINC . '/PHPMailer/PHPMailer.php';
				require_once ABSPATH . WPINC . '/PHPMailer/SMTP.php';
				require_once ABSPATH . WPINC . '/PHPMailer/Exception.php';
				$phpmailer = new \PHPMailer\PHPMailer\PHPMailer( true );
			}
		} elseif ( ! ( $phpmailer instanceof PHPMailer ) ) {
				require_once ABSPATH . WPINC . '/class-phpmailer.php';
				require_once ABSPATH . WPINC . '/class-smtp.php';
				$phpmailer = new \PHPMailer( true );
		}

		$subject = esc_html__( 'ERP SMTP Test Mail', 'erp' );
		$message = esc_html__( 'This is a test email by WP ERP.', 'erp' );

		$erp_email_settings = get_option( 'erp_settings_erp-email_general', array() );

		if ( ! isset( $erp_email_settings['from_email'] ) ) {
			$from_email = get_option( 'admin_email' );
		} else {
			$from_email = $erp_email_settings['from_email'];
		}

		if ( ! isset( $erp_email_settings['from_name'] ) ) {
			global $current_user;

			$from_name = $current_user->display_name;
		} else {
			$from_name = $erp_email_settings['from_name'];
		}

		$content_type = 'text/html';

		$phpmailer->AddAddress( $to );
		$phpmailer->From       = $from_email;
		$phpmailer->FromName   = $from_name;
		$phpmailer->Sender     = $phpmailer->From;
		$phpmailer->Subject    = $subject;
		$phpmailer->Body       = $message;
		$phpmailer->Mailer     = 'smtp';
		$phpmailer->Host       = $mail_server;
		$phpmailer->SMTPSecure = $authentication;
		$phpmailer->Port       = $port;

		if ( ! empty( $_REQUEST['authentication'] ) ) {
			$phpmailer->SMTPAuth = true;
			$phpmailer->Username = $username;
			$phpmailer->Password = $password;
		}

		$phpmailer->isHTML( true );

		try {
			$result = $phpmailer->Send();

			$this->send_success(
				array(
					'message' => sprintf(
						esc_html__( 'Test email has been sent successfully to %s', 'erp' ),
						$to
					),
				)
			);
		} catch ( \Exception $e ) {
			$this->send_error( $e->getMessage() );
		}
	}

	/**
	 * Test connection using Mailgun credentials
	 *
	 * @since 1.10.0
	 *
	 * @return mixed
	 */
	public function mailgun_test_connection() {
		$this->verify_nonce( 'erp-settings-nonce' );

		if ( ! current_user_can( 'manage_options' ) ) {
			$this->send_error( erp_get_message( array( 'type' => 'error_permission' ) ) );
		}

		if ( empty( $_REQUEST['private_api_key'] ) ) {
			$this->send_error( array( 'message' => esc_html__( 'No private API key provided', 'erp' ) ) );
		} else {
			$private_api_key = sanitize_text_field( wp_unslash( $_REQUEST['private_api_key'] ) );
		}

		if ( empty( $_REQUEST['domain'] ) ) {
			$this->send_error( array( 'message' => esc_html__( 'No domain address provided', 'erp' ) ) );
		} else {
			$domain = sanitize_text_field( wp_unslash( $_REQUEST['domain'] ) );
		}

		if ( empty( $_REQUEST['region'] ) ) {
			$this->send_error( array( 'message' => esc_html__( 'No region selected', 'erp' ) ) );
		} else {
			$region = sanitize_text_field( wp_unslash( $_REQUEST['region'] ) );
		}

		if ( empty( $_REQUEST['erp_mailgun_test_email'] ) ) {
			$to_email = get_option( 'admin_email' );
		} else {
			$to_email = sanitize_text_field( wp_unslash( $_REQUEST['erp_mailgun_test_email'] ) );
		}

		$subject = esc_html__( 'ERP Mailgun Test Mail', 'erp' );
		$message = esc_html__( 'This is a test email by WP ERP.', 'erp' );

		$erp_email_settings = get_option( 'erp_settings_erp-email_general', array() );

		if ( ! isset( $erp_email_settings['from_email'] ) ) {
			$from_email = get_option( 'admin_email' );
		} else {
			$from_email = $erp_email_settings['from_email'];
		}

		if ( ! isset( $erp_email_settings['from_name'] ) ) {
			global $current_user;

			$from_name = $current_user->display_name;
		} else {
			$from_name = $erp_email_settings['from_name'];
		}

		try {
			$mailgun = new EmailMailgun( $private_api_key, $region, $domain );

			$data = array(
				'subject'      => $subject,
				'from_address' => array(
					'email' => $from_email,
					'name'  => $from_name,
				),
				'to_address'   => array(
					'email' => $to_email,
					'name'  => '',
				),
				'message'      => $message,
			);

			$mailgun->send_email( $data );

			$this->send_success( array( 'message' => esc_html__( 'Test email has been sent successfully to ', 'erp' ) . $to_email ) );
		} catch ( \Exception $e ) {
			$this->send_error( $e->getMessage() );
		}
	}

	/**
	 * Test connection using wpmail() credentials
	 *
	 * @return mixed
	 */
	public function wpmail_test_connection() {
		$this->verify_nonce( 'erp-settings-nonce' );

		if ( ! current_user_can( 'manage_options' ) ) {
			$this->send_error( erp_get_message( array( 'type' => 'error_permission' ) ) );
		}

		if ( empty( $_REQUEST['erp_wpmail_test_email'] ) ) {
			$to_email = get_option( 'admin_email' );
		} else {
			$to_email = sanitize_text_field( wp_unslash( $_REQUEST['erp_wpmail_test_email'] ) );
		}

		$subject = esc_html__( 'ERP WP Default Test Mail', 'erp' );
		$message = esc_html__( 'This is a test email by WP ERP.', 'erp' );

		$erp_email_settings = get_option( 'erp_settings_erp-email_general', array() );

		if ( ! isset( $erp_email_settings['from_email'] ) ) {
			$from_email = get_option( 'admin_email' );
		} else {
			$from_email = $erp_email_settings['from_email'];
		}

		if ( ! isset( $erp_email_settings['from_name'] ) ) {
			global $current_user;
			$from_name = $current_user->display_name;
		} else {
			$from_name = $erp_email_settings['from_name'];
		}

		$headers[] = 'From: ' . $from_name . ' <' . $from_email . '>';

		try {
			$is_mail_sent = wp_mail( $to_email, $subject, $message, $headers );

			if ( $is_mail_sent ) {
				$this->send_success( array( 'message' => esc_html__( 'Test email has been sent successfully to ', 'erp' ) . $to_email ) );
			} else {
				$this->send_error( __( 'Failed to send test message to ', 'erp' ) );
			}
		} catch ( \Exception $e ) {
			$this->send_error( $e->getMessage() );
		}
	}

	/**
	 * Get All Email providers list
	 *
	 * @since 1.10.0
	 *
	 * @return mixed
	 */
	public function get_email_providers() {
		$this->verify_nonce( 'erp-settings-nonce' );

		if ( ! current_user_can( 'manage_options' ) ) {
			$this->send_error( erp_get_message( array( 'type' => 'error_permission' ) ) );
		}

		$email_settings  = ( new \WeDevs\ERP\Settings\Email() );
		$email_providers = $email_settings->get_email_prodivers();

		$this->send_success( $email_providers );
	}

	/**
	 * Saves addon license data
	 *
	 * @since 1.10.0
	 *
	 * @return mixed
	 */
	public function save_licenses() {
		$this->verify_nonce( 'erp-settings-nonce' );

		if ( ! current_user_can( 'manage_options' ) ) {
			$this->send_error( erp_get_message( array( 'type' => 'error_permission' ) ) );
		}

		if ( ! empty( $_REQUEST['extensions'] ) ) {
			$extensions = array_map( 'sanitize_text_field', wp_unslash( $_REQUEST['extensions'] ) );

			foreach ( $extensions as $ext ) {
				$old_key = get_option( $ext['id'] );

				if ( $old_key != $ext['license'] ) {
					update_option( $ext['id'], $ext['license'] );
				}

				$status = erp_get_license_status( $ext );

				if ( is_object( $status ) && 'valid' === $status->license ) {
					continue;
				}

				$license_key = get_option( $ext['id'] );

				if ( ! empty( $license_key ) ) {
					$api_params = array(
						'edd_action' => 'activate_license',
						'license'    => $license_key,
						'item_name'  => rawurlencode( $ext['name'] ),
						'url'        => home_url(),
					);

					$response = wp_remote_post(
						'https://wperp.com/',
						array(
							'timeout'   => 15,
							'sslverify' => false,
							'body'      => $api_params,
						)
					);

					if ( is_wp_error( $response ) ) {
						return false;
					}

					$license_data = json_decode( wp_remote_retrieve_body( $response ) );

					if ( $license_data ) {
						update_option( "{$ext['id']}_status}", $license_data );
					}
				}
			}
		}

		$this->send_success( __( 'Licenses saved succesfully', 'erp' ) );
	}
}
