<?php

namespace ChargeForms\Includes;

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

/**
 * Multiple Email Notifications per form (feature-parity gap found live —
 * user comparison screenshot: the reference product supports an unlimited, independently
 * enable/disable-able list of notifications per form; ChargeForms only
 * ever had exactly one, driven by flat `notification_*` settings keys).
 *
 * Shared between the admin UI (Form_Settings_Page) and the send path
 * (SubmissionHandler) so both read the exact same shape. Deliberately
 * NOT a migration: a form saved before this feature existed has no
 * `settings['notifications']` key at all — from_settings() synthesizes a
 * single legacy row from the old flat keys on the fly, every time, so
 * that form keeps sending its one notification exactly as before with no
 * write needed until the site owner actually adds a second one (at which
 * point Form_Settings_Page persists the real array).
 */
class Notification_List {

	public static function defaults() {
		return [
			'id'             => '',
			'enabled'        => true,
			'name'           => __( 'Notification', 'chargeforms' ),
			'send_to_type'   => 'fixed', // fixed | field
			'send_to_field'  => '',
			'email'          => '',
			'cc'             => '',
			'bcc'            => '',
			'subject'        => '',
			'message'        => '',
			'attach_uploads' => false,
			'condition_enabled' => false,
			'condition_match'   => 'all',
			'condition_rules'   => [],
			'routing_field'     => '',
			'routing_rules'     => [], // [ ['value' => ..., 'email' => ...], ... ]
		];
	}

	/** @return array List of notification rows — real ones from settings['notifications'] if present, else a single synthesized legacy row. Never empty. */
	public static function from_settings( array $settings ) {
		if ( ! empty( $settings['notifications'] ) && is_array( $settings['notifications'] ) ) {
			return array_map( fn( $row ) => wp_parse_args( is_array( $row ) ? $row : [], self::defaults() ), array_values( $settings['notifications'] ) );
		}

		return [ wp_parse_args( [
			'id'             => 'legacy',
			'name'           => __( 'Admin Notification Email', 'chargeforms' ),
			'send_to_type'   => $settings['notification_send_to_type'] ?? 'fixed',
			'send_to_field'  => $settings['notification_send_to_field'] ?? '',
			'email'          => $settings['notification_email'] ?? '',
			'cc'             => $settings['notification_cc'] ?? '',
			'bcc'            => $settings['notification_bcc'] ?? '',
			'subject'        => $settings['notification_subject'] ?? '',
			'message'        => $settings['notification_message'] ?? '',
			'attach_uploads' => ! empty( $settings['notification_attach_uploads'] ),
		], self::defaults() ) ];
	}

	public static function find( array $settings, $id ) {
		foreach ( self::from_settings( $settings ) as $row ) {
			if ( $row['id'] === $id ) {
				return $row;
			}
		}
		return null;
	}

	public static function new_id() {
		return 'ntf_' . wp_generate_password( 12, false, false );
	}
}