<?php
/**
 * Shortcode Subscribe
 *
 * @package   PopupMaker
 * @copyright Copyright (c) 2024, Code Atlantic LLC
 */

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

/**
 * Class PUM_Shortcode_Subscribe
 */
class PUM_Shortcode_Subscribe extends PUM_Shortcode {

	/**
	 * @var int
	 */
	public $version = 2;

	/**
	 * @var bool
	 */
	public $ajax_rendering = true;

	/**
	 * The shortcode tag.
	 *
	 * @return string
	 */
	public function tag() {
		return 'pum_sub_form';
	}

	/**
	 * @return string
	 */
	public function label() {
		return __( 'Subscription Form', 'popup-maker' );
	}

	/**
	 * @return string
	 */
	public function description() {
		return __( 'A customizable newsletter subscription form.', 'popup-maker' );
	}

	/**
	 * @return array
	 */
	public function post_types() {
		return [ 'page', 'post', 'popup' ];
	}

	/**
	 * @return array
	 */
	public function tabs() {
		$tabs = [
			'general' => __( 'General', 'popup-maker' ),
			'form'    => __( 'Form', 'popup-maker' ),
			'privacy' => __( 'Privacy', 'popup-maker' ),
			'actions' => __( 'Actions', 'popup-maker' ),
		];

		// Deprecated filter
		$tabs = apply_filters( 'pum_sub_form_shortcode_sections', $tabs );

		$tabs = apply_filters( 'pum_sub_form_shortcode_tabs', $tabs );

		return $this->resort_provider_tabs( $tabs );
	}

	/**
	 * @return array
	 */
	public function subtabs() {
		$subtabs = apply_filters(
			'pum_sub_form_shortcode_subtabs',
			[
				'general' => [
					'main' => __( 'General', 'popup-maker' ),
				],
				'privacy' => [
					'main' => __( 'General', 'popup-maker' ),
				],
				'form'    => [
					'appearance'   => __( 'Appearance', 'popup-maker' ),
					'fields'       => __( 'Fields', 'popup-maker' ),
					'labels'       => __( 'Labels', 'popup-maker' ),
					'placeholders' => __( 'Placeholders', 'popup-maker' ),
					'privacy'      => __( 'Privacy', 'popup-maker' ),
				],
				'actions' => [
					'popup'    => __( 'Popup', 'popup-maker' ),
					'redirect' => __( 'Redirect', 'popup-maker' ),
				],
			]
		);

		return $this->resort_provider_tabs( $subtabs );
	}

	/**
	 * @return array
	 */
	public function fields() {
		$select_args = [];

		// phpcs:ignore WordPress.Security.NonceVerification.Recommended
		$action = isset( $_GET['action'] ) ? sanitize_text_field( wp_unslash( $_GET['action'] ) ) : '';
		// phpcs:ignore WordPress.Security.NonceVerification.Recommended
		$post = isset( $_GET['post'] ) ? absint( wp_unslash( $_GET['post'] ) ) : null;

		if ( 'edit' === $action && is_int( $post ) ) {
			$select_args['post__not_in'] = wp_parse_id_list( [ get_the_ID(), $post ] );
		}

		$privacy_always_enabled = pum_get_option( 'privacy_consent_always_enabled', 'no' ) === 'yes';

		$privacy_enabled_dependency = [
			'privacy_consent_enabled' => 'yes',
		];

		$fields = apply_filters(
			'pum_sub_form_shortcode_fields',
			[
				'general' => [
					'main' => [
						'provider' => [
							'label'   => __( 'Service Provider', 'popup-maker' ),
							'desc'    => __( 'Choose which service provider to submit to.', 'popup-maker' ),
							'type'    => 'select',
							'options' => array_merge( [ '' => __( 'Default', 'popup-maker' ) ], PUM_Newsletter_Providers::dropdown_list(), [ 'none' => __( 'None', 'popup-maker' ) ] ),
							'std'     => '',
						],
					],
				],
				'form'    => [
					'fields'       => [
						'name_field_type' => [
							'label'   => __( 'Name Field Type', 'popup-maker' ),
							'type'    => 'select',
							'options' => [
								'disabled'   => __( 'None', 'popup-maker' ),
								'fullname'   => __( 'Full', 'popup-maker' ),
								'first_only' => __( 'First Only', 'popup-maker' ),
								'first_last' => __( 'First & Last', 'popup-maker' ),
							],
							'std'     => 'fullname',
							'private' => true,
						],
						'name_optional'   => [
							'label'        => __( 'Name Optional', 'popup-maker' ),
							'desc'         => __( 'Makes the name field optional.', 'popup-maker' ),
							'type'         => 'checkbox',
							'dependencies' => [
								'name_field_type' => [ 'fullname', 'first_only', 'first_last' ],
							],
							'private'      => true,
						],
						'name_disabled'   => [
							'label'        => __( 'Name Disabled', 'popup-maker' ),
							'desc'         => __( 'Removes the name field.', 'popup-maker' ),
							'type'         => 'checkbox',
							'dependencies' => [
								'name_field_type' => false,
							],
							'private'      => true,
						],

					],
					'labels'       => [
						'disable_labels' => [
							'label'   => __( 'Disable Labels', 'popup-maker' ),
							'desc'    => __( 'Disables the display of field labels.', 'popup-maker' ),
							'type'    => 'checkbox',
							'private' => true,
						],
						'heading_labels' => [
							'label'   => __( 'Labels', 'popup-maker' ),
							'desc'    => __( 'Field label text', 'popup-maker' ),
							'type'    => 'heading',
							'private' => true,
						],
						'label_name'     => [
							'label'        => __( 'Full Name', 'popup-maker' ),
							'dependencies' => [
								'disable_labels'  => false,
								'name_field_type' => [ 'fullname' ],
							],
							'std'          => __( 'Name', 'popup-maker' ),
							'private'      => true,
						],
						'label_fname'    => [
							'label'        => __( 'First Name', 'popup-maker' ),
							'dependencies' => [
								'disable_labels'  => false,
								'name_field_type' => [ 'first_only', 'first_last' ],
							],
							'std'          => __( 'First Name', 'popup-maker' ),
							'private'      => true,
						],
						'label_lname'    => [
							'label'        => __( 'Last Name', 'popup-maker' ),
							'dependencies' => [
								'disable_labels'  => false,
								'name_field_type' => [ 'first_last' ],
							],
							'std'          => __( 'Last Name', 'popup-maker' ),
							'private'      => true,
						],
						'label_email'    => [
							'label'        => __( 'Email', 'popup-maker' ),
							'dependencies' => [
								'disable_labels' => false,
							],
							'std'          => __( 'Email', 'popup-maker' ),
							'private'      => true,
						],
						'label_submit'   => [
							'label'   => __( 'Submit Button', 'popup-maker' ),
							'std'     => __( 'Subscribe', 'popup-maker' ),
							'private' => true,
						],
						// Deprecated fields.
						'name_text'      => [
							'type'    => 'hidden',
							'private' => true,
						],
						'email_text'     => [
							'private' => true,
							'type'    => 'hidden',
						],
						'button_text'    => [
							'type'    => 'hidden',
							'private' => true,
						],
					],
					'placeholders' => [
						'placeholder_name'  => [
							'label'        => __( 'Full Name', 'popup-maker' ),
							'dependencies' => [
								'name_field_type' => [ 'fullname' ],
							],
							'std'          => __( 'Name', 'popup-maker' ),
							'private'      => true,
						],
						'placeholder_fname' => [
							'label'        => __( 'First Name', 'popup-maker' ),
							'dependencies' => [
								'name_field_type' => [ 'first_only', 'first_last' ],
							],
							'std'          => __( 'First Name', 'popup-maker' ),
							'private'      => true,
						],
						'placeholder_lname' => [
							'label'        => __( 'Last Name', 'popup-maker' ),
							'dependencies' => [
								'name_field_type' => [ 'first_last' ],
							],
							'std'          => __( 'Last Name', 'popup-maker' ),
							'private'      => true,
						],
						'placeholder_email' => [
							'label'   => __( 'Email', 'popup-maker' ),
							'std'     => __( 'Email', 'popup-maker' ),
							'private' => true,
						],

					],
					'appearance'   => [
						'form_layout'    => [
							'label'   => __( 'Form Layout', 'popup-maker' ),
							'desc'    => __( 'Choose a form layout.', 'popup-maker' ),
							'type'    => 'select',
							'options' => [
								'block'  => __( 'Block', 'popup-maker' ),
								'inline' => __( 'Inline', 'popup-maker' ),
							],
							'std'     => 'block',
							'private' => true,
						],
						'form_alignment' => [
							'label'   => __( 'Form Alignment', 'popup-maker' ),
							'desc'    => __( 'Choose a form alignment.', 'popup-maker' ),
							'type'    => 'select',
							'options' => [
								'left'   => __( 'Left', 'popup-maker' ),
								'center' => __( 'Center', 'popup-maker' ),
								'right'  => __( 'Right', 'popup-maker' ),
							],
							'std'     => 'center',
							'private' => true,
						],
						'form_style'     => [
							'label'   => __( 'Form Style', 'popup-maker' ),
							'desc'    => __( 'Choose how you want your form styled.', 'popup-maker' ),
							'type'    => 'select',
							'options' => [
								''        => __( 'None', 'popup-maker' ),
								'default' => __( 'Default', 'popup-maker' ),
							],
							'std'     => 'default',
						],
						'layout'         => [
							'type'    => 'hidden',
							'private' => true,
						],
						'style'          => [
							'type'    => 'hidden',
							'private' => true,
						],
					],
				],
				'privacy' => [
					'main' => [
						'privacy_consent_enabled'      => [
							'label'   => __( 'Enabled', 'popup-maker' ),
							'desc'    => __( 'When enabled, the successful completion will result in normal success actions, but if they do not opt-in no records will be made.', 'popup-maker' ),
							'type'    => $privacy_always_enabled ? 'hidden' : 'select',
							'options' => [
								'yes' => __( 'Yes', 'popup-maker' ),
								'no'  => __( 'No', 'popup-maker' ),
							],
							'std'     => 'yes',
							'value'   => $privacy_always_enabled ? 'yes' : null,
							'private' => true,
						],
						'privacy_consent_label'        => [
							'label'        => __( 'Consent Field Label', 'popup-maker' ),
							'type'         => 'text',
							'std'          => pum_get_option( 'default_privacy_consent_label', __( 'Notify me about related content and special offers.', 'popup-maker' ) ),
							'private'      => true,
							'dependencies' => $privacy_enabled_dependency,
						],
						'privacy_consent_required'     => [
							'label'        => __( 'Consent Required', 'popup-maker' ),
							'desc'         => __( 'Note: Requiring consent may not be compliant with GDPR for all situations. Be sure to do your research or check with legal council.', 'popup-maker' ),
							'type'         => 'checkbox',
							'std'          => pum_get_option( 'default_privacy_consent_required' ),
							'private'      => true,
							'dependencies' => $privacy_enabled_dependency,
						],
						'privacy_consent_type'         => [
							'label'        => __( 'Field Type', 'popup-maker' ),
							'desc'         => __( 'Radio forces the user to make a choice, often resulting in more optins.', 'popup-maker' ),
							'type'         => 'select',
							'options'      => [
								'radio'    => __( 'Radio', 'popup-maker' ),
								'checkbox' => __( 'Checkbox', 'popup-maker' ),
							],
							'std'          => pum_get_option( 'default_privacy_consent_type', 'radio' ),
							'private'      => true,
							'dependencies' => $privacy_enabled_dependency,
						],
						'privacy_consent_radio_layout' => [
							'label'        => __( 'Consent Radio Layout', 'popup-maker' ),
							'type'         => 'select',
							'options'      => [
								'inline'  => __( 'Inline', 'popup-maker' ),
								'stacked' => __( 'Stacked', 'popup-maker' ),
							],
							'std'          => pum_get_option( 'default_privacy_consent_radio_layout', 'inline' ),
							'private'      => true,
							'dependencies' => array_merge(
								$privacy_enabled_dependency,
								[
									'privacy_consent_type' => 'radio',
								]
							),
						],
						'privacy_consent_yes_label'    => [
							'label'        => __( 'Consent Yes Label', 'popup-maker' ),
							'type'         => 'text',
							'std'          => pum_get_option( 'default_privacy_consent_yes_label', __( 'Yes', 'popup-maker' ) ),
							'private'      => true,
							'dependencies' => array_merge(
								$privacy_enabled_dependency,
								[
									'privacy_consent_type' => 'radio',
								]
							),
						],
						'privacy_consent_no_label'     => [
							'label'        => __( 'Consent No Label', 'popup-maker' ),
							'type'         => 'text',
							'std'          => pum_get_option( 'default_privacy_consent_no_label', __( 'No', 'popup-maker' ) ),
							'private'      => true,
							'dependencies' => array_merge(
								$privacy_enabled_dependency,
								[
									'privacy_consent_type' => 'radio',
								]
							),
						],
						'privacy_usage_text'           => [
							'label'        => __( 'Consent Usage Text', 'popup-maker' ),
							'desc'         => function_exists( 'get_privacy_policy_url' ) ? sprintf(
								/* translators: 1. opening tag, 2. closing tag. */
								__( 'You can use %1$s%2$s to insert a link to your privacy policy. To customize the link text use %1$s:Link Text%2$s', 'popup-maker' ),
								'{{privacy_link',
								'}}'
							) : '',
							'type'         => 'text',
							'std'          => pum_get_option( 'default_privacy_usage_text', __( 'If you opt in above we use this information send related content, discounts and other special offers.', 'popup-maker' ) ),
							'dependencies' => $privacy_enabled_dependency,
						],
					],
				],
				'actions' => [
					'popup'    => [
						'closepopup'   => [
							'label' => __( 'Close Popup', 'popup-maker' ),
							'type'  => 'checkbox',
						],
						'closedelay'   => [
							'label'        => __( 'Delay', 'popup-maker' ),
							'type'         => 'rangeslider',
							'min'          => 0,
							'max'          => 180,
							'step'         => 1,
							'unit'         => 's',
							'std'          => 0,
							'dependencies' => [
								'closepopup' => true,
							],
						],
						'openpopup'    => [
							'label' => __( 'Open Popup', 'popup-maker' ),
							'type'  => 'checkbox',
						],
						'openpopup_id' => [
							'label'        => __( 'Popup ID', 'popup-maker' ),
							'type'         => 'select',
							'options'      => [
								0 => __( 'Select a popup', 'popup-maker' ),
							] + PUM_Helpers::popup_selectlist( $select_args ),
							'std'          => 0,
							'dependencies' => [
								'openpopup' => true,
							],
						],
					],
					'redirect' => [
						'redirect_enabled' => [
							'label' => __( 'Redirect', 'popup-maker' ),
							'desc'  => __( 'Enable refreshing the page or redirecting after success.', 'popup-maker' ),
							'type'  => 'checkbox',
						],
						'redirect'         => [
							'label'        => __( 'Redirect URL', 'popup-maker' ),
							'desc'         => __( 'Leave blank to refresh, or enter a url that users will be taken to after success.', 'popup-maker' ),
							'std'          => '',
							'dependencies' => [
								'redirect_enabled' => true,
							],
						],
					],
				],
			]
		);

		return $this->resort_provider_tabs( $fields );
	}

	/**
	 * Sorts tabs so that providers come first.
	 *
	 * @param array $tabs
	 *
	 * @return array
	 */
	public function resort_provider_tabs( $tabs = [] ) {
		$sorted_tabs = $tabs;

		foreach ( $tabs as $tab_id => $tab ) {
			if ( strpos( $tab_id, 'provider_' ) === 0 ) {
				PUM_Utils_Array::move_item( $sorted_tabs, $tab_id, 'down', 'general' );
			}
		}

		return $sorted_tabs;
	}

	/**
	 * Shortcode handler
	 *
	 * @param  array  $atts    shortcode attributes
	 * @param  string $content shortcode content
	 *
	 * @return string
	 */
	public function handler( $atts, $content = null ) {
		$atts = $this->shortcode_atts( $atts );

		static $instance = 0;

		++$instance;

		$atts['instance'] = $instance;

		ob_start();

		$data_attr = $this->data_attr( $atts );

		$classes = implode(
			' ',
			[
				'pum_sub_form',
				$atts['provider'],
				$atts['form_layout'],
				$atts['form_style'],
				'pum-sub-form',
				'pum-form',
				'pum-sub-form--provider-' . $atts['provider'],
				'pum-form--layout-' . $atts['form_layout'],
				'pum-form--style-' . $atts['form_style'],
				'pum-form--alignment-' . $atts['form_alignment'],
			]
		); ?>


		<form class="<?php echo esc_attr( $classes ); ?>" data-settings="<?php echo esc_attr( PUM_Utils_Array::safe_json_encode( $data_attr ) ); ?>">

			<?php do_action( 'pum_sub_form_before', $atts ); ?>

			<?php

			if ( 'disabled' !== $atts['name_field_type'] ) :
				$required = ! $atts['name_optional'] ? 'required' : '';

				switch ( $atts['name_field_type'] ) {
					case 'fullname':
						?>

						<div class="pum-form__field  pum-form__field--name  pum-sub-form-field  pum-sub-form-field--name">
							<?php if ( ! $atts['disable_labels'] ) : ?>
								<label class="pum-form__label  pum-sub-form-label"><?php echo esc_html( $atts['label_name'] ); ?></label>
							<?php endif; ?>
							<input type="text" name="name" <?php echo esc_attr( $required ); ?> placeholder="<?php echo esc_attr( $atts['placeholder_name'] ); ?>" />
						</div>

						<?php
						break;

					case 'first_only':
						?>

						<div class="pum-form__field  pum-form__field--fname  pum-sub-form-field  pum-sub-form-field--fname">
							<?php if ( ! $atts['disable_labels'] ) : ?>
								<label class="pum-form__label  pum-sub-form-label"><?php echo esc_html( $atts['label_fname'] ); ?></label>
							<?php endif; ?>
							<input type="text" name="fname" <?php echo esc_attr( $required ); ?> placeholder="<?php echo esc_attr( $atts['placeholder_fname'] ); ?>" />
						</div>

						<?php
						break;

					case 'first_last':
						?>

						<div class="pum-form__field  pum-form__field--fname  pum-sub-form-field  pum-sub-form-field--fname">
							<?php if ( ! $atts['disable_labels'] ) : ?>
								<label class="pum-form__label  pum-sub-form-label"><?php echo esc_html( $atts['label_fname'] ); ?></label>
							<?php endif; ?>
							<input type="text" name="fname" <?php echo esc_attr( $required ); ?> placeholder="<?php echo esc_attr( $atts['placeholder_fname'] ); ?>" />
						</div>

						<div class="pum-form__field  pum-form__field--lname  pum-sub-form-field  pum-sub-form-field--lname">
							<?php if ( ! $atts['disable_labels'] ) : ?>
								<label class="pum-form__label  pum-sub-form-label"><?php echo esc_html( $atts['label_lname'] ); ?></label>
							<?php endif; ?>
							<input type="text" name="lname" <?php echo esc_attr( $required ); ?> placeholder="<?php echo esc_attr( $atts['placeholder_lname'] ); ?>" />
						</div>

						<?php
						break;
				}
				?>

			<?php endif; ?>

			<div class="pum-form__field  pum-form__field--email  pum-sub-form-field  pum-sub-form-field--email">
				<?php if ( ! $atts['disable_labels'] ) : ?>
					<label class="pum-form__label  pum-sub-form-label"><?php echo esc_html( $atts['label_email'] ); ?></label>
				<?php endif; ?>
				<input type="email" name="email" required placeholder="<?php echo esc_attr( $atts['placeholder_email'] ); ?>" />
			</div>

			<?php do_action( 'pum_sub_form_fields', $atts ); ?>

			<?php do_action( 'pum_newsletter_fields', $atts ); ?>

			<input type="hidden" name="provider" value="<?php echo esc_attr( $atts['provider'] ); ?>" />

			<?php
			if ( 'yes' === $atts['privacy_consent_enabled'] ) :
				$consent_text = trim( $atts['privacy_consent_label'] );
				$consent_args = [
					'enabled'  => 'yes',
					'required' => isset( $atts['privacy_consent_required'] ) && $atts['privacy_consent_required'],
					'text'     => ! empty( $consent_text ) ? $consent_text : ( ! empty( $atts['privacy_consent_yes_label'] ) ? $atts['privacy_consent_yes_label'] : '' ),
				];
				?>

				<input type="hidden" name="consent_args" value="<?php echo esc_attr( PUM_Utils_Array::safe_json_encode( $consent_args ) ); ?>" />

				<div class="pum-form__field  pum-form__field--<?php echo esc_attr( $atts['privacy_consent_type'] ); ?>  pum-form__field--consent  pum-sub-form-field">
					<?php
					switch ( $atts['privacy_consent_type'] ) {
						case 'checkbox':
							?>
							<label class="pum-form__label  pum-sub-form-label">
								<input type="checkbox" value="yes" name="consent" <?php echo $consent_args['required'] ? 'required="required"' : ''; ?> /> <?php echo wp_kses( $consent_text, [] ); ?>
							</label>
							<?php
							break;
						case 'radio':
							?>
							<?php if ( ! empty( $consent_text ) ) : ?>
								<label class="pum-form__label  pum-sub-form-label"><?php echo wp_kses( $consent_text, wp_kses_allowed_html( 'data' ) ); ?></label>
							<?php endif; ?>
							<div class="pum-form__consent-radios  pum-form__consent-radios--<?php echo esc_attr( $atts['privacy_consent_radio_layout'] ); ?>">
								<label class="pum-form__label  pum-sub-form-label">
									<input type="radio" value="yes" name="consent" <?php echo $consent_args['required'] ? 'required="required"' : ''; ?> /> <?php echo wp_kses( $atts['privacy_consent_yes_label'], wp_kses_allowed_html( 'data' ) ); ?>
								</label>
								<label class="pum-form__label  pum-sub-form-label">
									<input type="radio" value="no" name="consent" /> <?php echo wp_kses( $atts['privacy_consent_no_label'], wp_kses_allowed_html( 'data' ) ); ?>
								</label>
							</div>
							<?php
							break;
					}

					if ( ! empty( $atts['privacy_usage_text'] ) ) :
						$usage_text = trim( $atts['privacy_usage_text'] );

						if ( strpos( $usage_text, '{{privacy_link' ) !== false && function_exists( 'get_privacy_policy_url' ) && get_privacy_policy_url() !== '' ) {
							preg_match_all( '/{{privacy_link:?(.*)}}/', $usage_text, $matches );

							$link = '<a href="' . get_privacy_policy_url() . '" target="_blank">%s</a>';

							foreach ( $matches[0] as $key => $value ) {
								$usage_text = str_replace( $matches[0][ $key ], sprintf( $link, $matches[1][ $key ] ), $usage_text );
							}
						}
						?>
						<p>
							<small>
							<?php
							echo wp_kses(
								$usage_text,
								[
									'a' => [
										'target' => true,
										'href'   => true,
									],
								]
							);
							?>
							</small>
						</p>
					<?php endif; ?>
				</div>
			<?php endif; ?>

			<div class="pum-form__field  pum-form__field--submit  pum-sub-form-field  pum-sub-form-field--submit">
				<button class="pum-form__submit  pum-sub-form-submit"><?php echo esc_html( $atts['label_submit'] ); ?></button>
			</div>

			<?php do_action( 'pum_sub_form_after', $atts ); ?>
		</form>

		<?php

		// return content
		return ob_get_clean();
	}

	/**
	 * Process shortcode attributes.
	 *
	 * Also remaps and cleans old ones.
	 *
	 * @param $atts
	 *
	 * @return array
	 */
	public function shortcode_atts( $atts ) {
		$atts = parent::shortcode_atts( $atts );

		if ( empty( $atts['provider'] ) ) {
			$atts['provider'] = pum_get_option( 'newsletter_default_provider' );
		}

		// Remap old atts.
		if ( ! empty( $atts['layout'] ) ) {
			$atts['form_layout'] = $atts['layout'];
		}
		if ( ! empty( $atts['style'] ) ) {
			$atts['form_style'] = $atts['style'];
		}

		if ( ! empty( $atts['name_text'] ) ) {
			$atts['label_name'] = $atts['name_text'];
		}
		if ( ! empty( $atts['email_text'] ) ) {
			$atts['label_email'] = $atts['email_text'];
		}
		if ( ! empty( $atts['button_text'] ) ) {
			$atts['label_submit'] = $atts['button_text'];
		}

		unset( $atts['layout'], $atts['style'], $atts['name_text'], $atts['email_text'], $atts['button_text'] );

		/**
		 * Remap v1.7 core shortcode attributes starting here.
		 */
		if ( ! empty( $atts['name_disabled'] ) && $atts['name_disabled'] ) {
			$atts['name_field_type'] = 'disabled';
		}

		unset( $atts['name_disabled'] );

		return $atts;
	}

	/**
	 * Returns array of fields & values that will be passed into data attr of the form.
	 *
	 * @param array $atts
	 *
	 * @return array
	 */
	public function data_attr( $atts = [] ) {
		$data = [];

		$data_attr_fields = $this->data_attr_fields();

		foreach ( $atts as $key => $value ) {
			if ( in_array( $key, $data_attr_fields, true ) ) {
				$data[ $key ] = $value;

				if ( 'redirect' === $key ) {
					// Ignore obfuscation as this is a specific function to mask redirect URLs from crawlers.
					// phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.obfuscation_base64_encode
					$data[ $key ] = base64_encode( esc_url( $value ) );
				}
			}
		}

		return $data;
	}

	/**
	 * Returns array of fields that will be passed into data attr of the form.
	 *
	 * @return mixed
	 */
	public function data_attr_fields() {
		return apply_filters(
			'pum_sub_form_data_attr_fields',
			[
				'closepopup',
				'closedelay',
				'openpopup',
				'openpopup_id',
				'redirect_enabled',
				'redirect',
			]
		);
	}

	/**
	 *
	 */
	public function template() {
		?>
		<p class="pum-sub-form-desc">
			<?php esc_html_e( 'Subscription Form Placeholder', 'popup-maker' ); ?>
		</p>
		<?php
	}
}