<?php
/**
 * Formidable Forms integration for provider registration
 *
 * @package DDHH_Job_Manager
 */

// Exit if accessed directly.
defined( 'ABSPATH' ) || exit;

/**
 * Handles Formidable Forms integration for provider registration
 */
class DDHH_JM_Formidable {

	/**
	 * Form ID for provider registration
	 *
	 * @var int|null
	 */
	private static $registration_form_id = null;

	/**
	 * Get the registration form ID
	 *
	 * @return int|null Form ID or null if not found
	 */
	public static function get_registration_form_id() {
		if ( null !== self::$registration_form_id ) {
			return self::$registration_form_id;
		}

		// Look up form by key
		$form = FrmForm::getOne( 'provider_registration' );
		if ( $form ) {
			self::$registration_form_id = $form->id;
			return self::$registration_form_id;
		}

		return null;
	}

	/**
	 * Setup registration hooks
	 */
	public static function setup_registration_hooks() {
		// Create form on plugin activation if it doesn't exist
		add_action( 'init', array( __CLASS__, 'create_registration_form' ), 11 );

		// Hook into Formidable form submission
		add_action( 'frm_after_create_entry', array( __CLASS__, 'handle_registration_submission' ), 30, 2 );
	}

	/**
	 * Create the registration form programmatically if it doesn't exist
	 */
	public static function create_registration_form() {
		// Check if Formidable is active
		if ( ! class_exists( 'FrmForm' ) ) {
			return;
		}

		// Check if form already exists
		$existing_form = FrmForm::getOne( 'provider_registration' );
		if ( $existing_form ) {
			self::$registration_form_id = $existing_form->id;
			return;
		}

		// Create form
		$form_values = array(
			'name'        => 'Provider Registration',
			'form_key'    => 'provider_registration',
			'description' => 'Anbieter-Registrierung für Digital Dabei Hamburg',
			'status'      => 'published',
			'options'     => array(
				'submit_value' => 'Registrieren',
				'success_msg'  => 'Registrierung erfolgreich! Sie werden weitergeleitet...',
			),
		);

		$form_id = FrmForm::create( $form_values );

		if ( ! $form_id ) {
			return;
		}

		self::$registration_form_id = $form_id;

		// Create form fields
		$fields = array(
			array(
				'name'        => 'Organisationsname',
				'field_key'   => 'organization_name',
				'type'        => 'text',
				'required'    => '1',
				'form_id'     => $form_id,
				'field_order' => 1,
			),
			array(
				'name'        => 'Ansprechperson',
				'field_key'   => 'contact_person',
				'type'        => 'text',
				'required'    => '1',
				'form_id'     => $form_id,
				'field_order' => 2,
			),
			array(
				'name'         => 'E-Mail',
				'field_key'    => 'email',
				'type'         => 'email',
				'required'     => '1',
				'form_id'      => $form_id,
				'field_order'  => 3,
				'field_options' => array(
					'unique' => '1',
				),
			),
			array(
				'name'        => 'Passwort',
				'field_key'   => 'password',
				'type'        => 'password',
				'required'    => '1',
				'form_id'     => $form_id,
				'field_order' => 4,
				'field_options' => array(
					'minlength' => 8,
				),
			),
			array(
				'name'        => 'Passwort bestätigen',
				'field_key'   => 'password_confirm',
				'type'        => 'password',
				'required'    => '1',
				'form_id'     => $form_id,
				'field_order' => 5,
				'field_options' => array(
					'minlength' => 8,
				),
			),
		);

		foreach ( $fields as $field ) {
			FrmField::create( $field );
		}
	}

	/**
	 * Handle registration form submission
	 *
	 * @param int   $entry_id Entry ID.
	 * @param int   $form_id  Form ID.
	 */
	public static function handle_registration_submission( $entry_id, $form_id ) {
		// Only process our registration form
		if ( $form_id !== self::get_registration_form_id() ) {
			return;
		}

		// Get entry data
		$entry = FrmEntry::getOne( $entry_id, true );
		if ( ! $entry ) {
			return;
		}

		// Extract field values
		$email             = '';
		$password          = '';
		$password_confirm  = '';
		$organization_name = '';
		$contact_person    = '';

		foreach ( $entry->metas as $field_id => $value ) {
			$field = FrmField::getOne( $field_id );
			if ( ! $field ) {
				continue;
			}

			switch ( $field->field_key ) {
				case 'email':
					$email = sanitize_email( $value );
					break;
				case 'password':
					$password = $value;
					break;
				case 'password_confirm':
					$password_confirm = $value;
					break;
				case 'organization_name':
					$organization_name = sanitize_text_field( $value );
					break;
				case 'contact_person':
					$contact_person = sanitize_text_field( $value );
					break;
			}
		}

		// Validate required fields
		if ( empty( $email ) || empty( $password ) || empty( $organization_name ) || empty( $contact_person ) ) {
			return;
		}

		// Validate passwords match
		if ( $password !== $password_confirm ) {
			return;
		}

		// Check if user already exists
		if ( email_exists( $email ) ) {
			return;
		}

		// Create username from email (part before @)
		$username = sanitize_user( strstr( $email, '@', true ) );

		// Ensure username is unique
		$username_base = $username;
		$counter       = 1;
		while ( username_exists( $username ) ) {
			$username = $username_base . $counter;
			$counter++;
		}

		// Create WordPress user
		$user_id = wp_insert_user(
			array(
				'user_login'   => $username,
				'user_email'   => $email,
				'user_pass'    => $password,
				'role'         => 'ddhh_provider',
				'display_name' => $contact_person,
				'first_name'   => $contact_person,
			)
		);

		// Check for errors
		if ( is_wp_error( $user_id ) ) {
			return;
		}

		// Store organization name as user meta
		update_user_meta( $user_id, 'ddhh_org_name', $organization_name );

		// Auto-login the user
		wp_set_auth_cookie( $user_id, true );
		wp_set_current_user( $user_id );

		// Optionally redirect (handled by JavaScript or form settings)
		do_action( 'ddhh_provider_registered', $user_id, $organization_name );
	}
}