<?php

namespace forge12\contactform7\CF7DoubleOptIn {

	use forge12\plugins\ContactForm7;
	use Forge12\Shared\LoggerInterface;

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

	/**
	 * Class Backend
	 * Responsible to handle the admin settings for the double opt-in field
	 *
	 * @package forge12\contactform7\CF7OptIn
	 */
	class CF7Backend {
		private LoggerInterface $logger;

		/**
		 * Admin constructor.
		 */
		public function __construct( LoggerInterface $logger ) {
			$this->logger = $logger;

			$this->get_logger()->debug( 'Admin constructor called', [
				'plugin' => 'double-opt-in',
				'class'  => __CLASS__,
				'method' => __METHOD__,
			] );

			add_action( 'admin_init', [ $this, 'addHooks' ] );
			$this->get_logger()->debug( 'Hook admin_init registered', [
				'plugin' => 'double-opt-in',
			] );

			add_action( 'admin_enqueue_scripts', [ $this, 'addStyles' ] );
			$this->get_logger()->debug( 'Hook admin_enqueue_scripts registered', [
				'plugin' => 'double-opt-in',
			] );
		}


		public function get_logger() {
			return $this->logger;
		}

		/**
		 * Add the styles for the form
		 */
		public function addStyles( $hook ) {
			$this->get_logger()->debug( 'Enqueuing admin styles and scripts', [
				'plugin' => 'double-opt-in',
				'class'  => __CLASS__,
				'method' => __METHOD__,
				'hook'   => $hook,
			] );

			wp_enqueue_script(
				'f12-cf7-doubleoptin-admin',
				plugins_url( 'assets/f12-cf7-popup.js', __FILE__ ),
				[ 'jquery' ]
			);
			$this->get_logger()->debug( 'Admin popup script enqueued', [
				'plugin' => 'double-opt-in',
			] );

			wp_localize_script(
				'f12-cf7-doubleoptin-admin',
				'doi',
				[
					'ajax_url' => admin_url( 'admin-ajax.php' ),
					'nonce'    => wp_create_nonce( 'f12_doi_details' ),
				]
			);
			$this->get_logger()->debug( 'Admin popup script localized', [
				'plugin' => 'double-opt-in',
			] );

			wp_enqueue_script(
				'f12-cf7-doubleoptin-templateloader',
				plugins_url( 'assets/f12-cf7-templateloader.js', __FILE__ ),
				[ 'jquery' ]
			);
			$this->get_logger()->debug( 'Template loader script enqueued', [
				'plugin' => 'double-opt-in',
			] );

			wp_localize_script(
				'f12-cf7-doubleoptin-templateloader',
				'templateloader',
				[
					'ajax_url'          => admin_url( 'admin-ajax.php' ),
					'nonce'             => wp_create_nonce( 'f12_doi_templateloader' ),
					'label_placeholder' => __( 'Please wait while we load the template...', 'double-opt-in' ),
				]
			);
			$this->get_logger()->debug( 'Template loader script localized', [
				'plugin' => 'double-opt-in',
			] );
		}


		/**
		 * Add the hooks responsible to handle wordpress functions
		 */
		public function addHooks() {
			$this->get_logger()->debug( 'Registering CF7 admin hooks', [
				'plugin' => 'double-opt-in',
				'class'  => __CLASS__,
				'method' => __METHOD__,
			] );

			add_filter( 'wpcf7_editor_panels', [ $this, 'addPanel' ], 10, 1 );
			$this->get_logger()->debug( 'Filter wpcf7_editor_panels registered', [
				'plugin' => 'double-opt-in',
			] );

			add_action( 'wpcf7_save_contact_form', [ $this, 'save' ], 10, 3 );
			$this->get_logger()->debug( 'Action wpcf7_save_contact_form registered', [
				'plugin' => 'double-opt-in',
			] );
		}


		/**
		 * Add a custom panel to the contact form 7 options
		 */
		public function addPanel( array $panels ) {
			$this->get_logger()->debug( 'Adding CF7 editor panel', [
				'plugin' => 'double-opt-in',
				'class'  => __CLASS__,
				'method' => __METHOD__,
			] );

			$panels['optin'] = [
				'title'    => __( 'Double-Opt-in', 'double-opt-in' ),
				'callback' => [ $this, 'render' ],
			];

			$this->get_logger()->debug( 'CF7 editor panel added', [
				'plugin' => 'double-opt-in',
			] );

			return $panels;
		}


		/**
		 * On Contact Form save store the information in the database
		 *
		 * @param \WPCF7_ContactForm $contact_form
		 * @param                    $args
		 * @param                    $context
		 */
		public function save( $contact_form, $args, $context ) {
			$postID = $contact_form->id();

			$this->get_logger()->debug( 'Saving CF7 Double Opt-In settings', [
				'plugin'  => 'double-opt-in',
				'class'   => __CLASS__,
				'method'  => __METHOD__,
				'post_id' => $postID,
			] );

			// Validate nonce
			if ( ! isset( $_POST['f12_cf7_doubleoptin_save_form_nonce'] ) || ! wp_verify_nonce( $_POST['f12_cf7_doubleoptin_save_form_nonce'], 'f12_cf7_doubleoptin_save_form_action' ) ) {
				$this->get_logger()->warning( 'Nonce validation failed during save', [
					'plugin'  => 'double-opt-in',
					'post_id' => $postID,
				] );
				return;
			}

			// Check if the double opt-in settings is set
			if ( ! $postID || ! isset( $_POST['doubleoptin'] ) ) {
				update_post_meta( $postID, 'f12-cf7-doubleoptin', [] );
				$this->get_logger()->debug( 'No doubleoptin data found, cleared settings', [
					'plugin'  => 'double-opt-in',
					'post_id' => $postID,
				] );
				return;
			}

			$parameter = SanitizeHelper::sanitize_array( $_POST['doubleoptin'] );
			$metadata  = CF7DoubleOptIn::getInstance()->getParameter( $postID );

			foreach ( $metadata as $key => $value ) {
				if ( isset( $parameter[ $key ] ) ) {
					if ( $key === 'body' ) {
						$metadata[ $key ] = $parameter[ $key ];
					} elseif ( $key === 'enable' ) {
						$metadata[ $key ] = (int) $parameter[ $key ];
					} elseif ( $key === 'sender' ) {
						$metadata[ $key ] = $parameter[ $key ];
					} else {
						$metadata[ $key ] = $parameter[ $key ];
					}
				} elseif ( $key === 'enable' ) {
					$metadata[ $key ] = 0;
				}
			}

			$metadata = apply_filters( 'f12_cf7_doubleoptin_metadata_cf7', $metadata );
			$metadata = apply_filters( 'f12_cf7_doubleoptin_save_form', $metadata );

			update_post_meta( $postID, 'f12-cf7-doubleoptin', $metadata );

			$this->get_logger()->info( 'Double Opt-In settings saved', [
				'plugin'  => 'double-opt-in',
				'post_id' => $postID,
				'data'    => $metadata,
			] );
		}


		/**
		 * Return an option list containing all tags for the condition and a default field to disable the condition.
		 *
		 * @param \WPCF7_ContactForm $post
		 *
		 * @return array
		 */
		private function getTags( $post ) {
			$this->get_logger()->debug( 'Fetching CF7 form tags', [
				'plugin'  => 'double-opt-in',
				'class'   => __CLASS__,
				'method'  => __METHOD__,
				'post_id' => $post->id() ?? null,
			] );

			$tags      = [];
			$arrayTags = $post->scan_form_tags();

			foreach ( $arrayTags as $formTag /** @var \WPCF7_FormTag $formTag */ ) {
				if ( ! empty( $formTag->name ) ) {
					$tags[ $formTag->name ] = $formTag->name;
				}
			}

			$this->get_logger()->debug( 'Form tags fetched', [
				'plugin' => 'double-opt-in',
				'count'  => count( $tags ),
			] );

			return $tags;
		}


		/**
		 * Show the backend double opt in options
		 *
		 * @param \WPCF7_ContactForm $post
		 */
		public function render( $post ) {
			if ( ! $post ) {
				return;
			}

			$metadata = CF7DoubleOptIn::getInstance()->getParameter( $post->id() );
			$id       = "doubleoptin";
			?>
            <div class="forge12-plugin" style="padding-top:0;">
                <div class="forge12-plugin-content" style="margin-top:0;">
                    <div class="forge12-plugin-content-main">
                        <div class="box" style="width:100%;">
                            <h2><?php _e( 'Opt-In Formular Settings', 'double-opt-in' ); ?></h2>
                            <div class="option">
                                <div class="label">
                                    <label for="doubleoptin[enable]">
										<?php _e( 'Enable', 'double-opt-in' ); ?>
                                    </label>
                                </div>
                                <div class="input">
                                    <input type="checkbox" name="doubleoptin[enable]" id="doubleoptin"
                                           value="1" <?php echo isset( $metadata['enable'] ) && $metadata['enable'] == 1 ? 'checked = "checked"' : ''; ?> >
                                    <span>
                                    <?php _e( 'Yes', 'double-opt-in' ); ?>
                                </span>
                                    <p><?php _e( 'Enable this checkox to activate the Double-Opt-In Mail for this formular.', 'double-opt-in' ); ?></p>
                                </div>
                            </div>

                            <div class="option">
                                <div class="label">
                                    <label for="doubleoptin[category]">
										<?php _e( 'Category', 'double-opt-in' ); ?>
                                    </label>
                                </div>
                                <div class="input">
									<?php
									$atts = array(
										'perPage' => - 1,
										'orderBy' => 'name',
										'order'   => 'ASC'
									);

									$list = Category::get_list( $atts, $numberOfPages );

									$response = '<option value="0">' . __( 'Please select', 'double-opt-in' ) . '</option>';
									foreach ( $list as $Category /** @var Category $Category */ ) {
										$selected = "";
										if ( $Category->get_id() == $metadata['category'] ) {
											$selected = 'selected="selected"';
										}
										$response .= '<option value="' . esc_attr( $Category->get_id() ) . '" ' . $selected . '>' . esc_attr( $Category->get_name() ) . '</option>';
									}
									?>
                                    <select name="doubleoptin[category]"><?php echo wp_kses( $response, array(
											'option' => array(
												'value'    => array(),
												'selected' => array()
											)
										) ); ?></select>
                                    <span>
                                        <?php _e( 'Assign the Opt-In to a Category for an easier administration.', 'double-opt-in' ); ?>
                                    </span>
                                </div>
                            </div>

                            <div class="option">
                                <div class="label">
                                    <label for="doubleoptin[page]">
										<?php _e( 'Dynamic Condition', 'double-opt-in' ); ?>
                                    </label>
                                </div>
                                <div class="input">
                                <span>
                                <?php _e( 'Enable the Opt-In only when the field ', 'double-opt-in' ); ?>
                                </span>
									<?php
									$ConditionList = new HTMLSelect( $id . '[conditions]', array_merge( array( 'disable' => __( 'Disabled', 'double-opt-in' ) ), $this->getTags( $post ) ), array(
										'id'    => array( $id . '-conditions' ),
										'class' => array(
											'large-text',
											'code'
										)
									) );
									$ConditionList->setOptionSelectedByKey( $metadata['conditions'] );
									echo wp_kses( $ConditionList->get(), array(
										'select' => array( 'name' => array() ),
										'option' => array(
											'value'    => array(),
											'selected' => array()
										)
									) );
									?>
                                    <span>
                                <?php _e( 'has been filled/checked by the visitor.', 'double-opt-in' ); ?>
                            </span>
                                </div>
                            </div>

                            <div class="option">
                                <div class="label">
                                    <label for="doubleoptin[page]">
										<?php _e( 'Confirmation Page', 'double-opt-in' ); ?>
                                    </label>
                                </div>
                                <div class="input">
									<?php wp_dropdown_pages( array(
										'show_option_none' => __( 'default', 'double-opt-in' ),
										'name'             => 'doubleoptin[page]',
										'selected'         => $metadata['page']
									) ); ?>
                                    <p>
										<?php _e( 'Select the page that should be displayed after the user clicks on the confirmation link', 'double-opt-in' ); ?>
                                    </p>
                                </div>
                            </div>

							<?php
							/**
							 * Used to render settings for CF7
							 *
							 * @param string $output
							 * @param array  $metadata
							 *
							 * @since 3.0.0
							 */
							echo apply_filters( 'f12_cf7_formular_settings_after_cf7', '', $metadata );

							/**
							 * Deprecated - Used to add settings for cf7.
							 *
							 * @param string $type
							 * @param array  $metadata
							 */
							do_action( 'f12_cf7_formular_settings_after', 'cf7', $metadata );
							?>
                        </div>

                        <div class="box" style="width:100%;">
                            <h2><?php _e( 'Customize your Opt-In Mail', 'double-opt-in' ); ?></h2>
                            <div class="option">
                                <div class="label">
                                    <label for="doubleoptin-recipient">
                                        <label for="<?php echo esc_attr( $id ); ?>-recipient"><?php echo __( 'To', 'double-opt-in' ); ?></label>
                                    </label>
                                </div>
                                <div class="input">
                                    <input type="text" id="<?php echo esc_attr( $id ); ?>-recipient"
                                           name="<?php echo esc_attr( $id ); ?>[recipient]"
                                           class="large-text code" size="70"
                                           value="<?php echo esc_attr( $metadata['recipient'] ); ?>"/>
                                    <p>
										<?php _e( 'This field defines who will receive the Double-Opt-In mail. Enter one of the following tags that represents the mail for the customer:', 'double-opt-in' ); ?>
                                    </p>
                                    <p>
                                        <code>
											<?php
											$arrayTags = $this->getTags( $post );
											foreach ( $arrayTags as $key => $value ) {
												$arrayTags[ $key ] = "[" . esc_html( $value ) . "]";
											}
											echo esc_html( implode( ",", array_filter( $arrayTags ) ) );
											?>
                                        </code>
                                    </p>
                                </div>
                            </div>

                            <div class="option">
                                <div class="label">
                                    <label for="<?php echo esc_attr( $id ); ?>-sender">
										<?php echo esc_html( __( 'From', 'double-opt-in' ) ); ?>
                                    </label>
                                </div>
                                <div class="input">
                                    <input type="text" id="<?php echo esc_attr( $id ); ?>-sender"
                                           name="<?php echo esc_attr( $id ); ?>[sender]"
                                           class="large-text code" size="70"
                                           value="<?php echo esc_attr( $metadata['sender'] ); ?>"/>
                                    <p>
										<?php _e( 'This field defines who will sent the mail. You can either enter the e-Mail (e.g.: your-email@yourdomain.de) or use a placeholder (e.g.: [_site_admin_email]).', 'double-opt-in' ); ?>
                                    </p>
                                </div>
                            </div>

                            <div class="option">
                                <div class="label">
                                    <label for="<?php echo esc_attr( $id ); ?>-sender">
										<?php echo esc_html( __( 'From Name', 'double-opt-in' ) ); ?>
                                    </label>
                                </div>
                                <div class="input">
                                    <input type="text" id="<?php echo esc_attr( $id ); ?>-sender_name"
                                           name="<?php echo esc_attr( $id ); ?>[sender_name]"
                                           class="large-text code" size="70"
                                           value="<?php echo esc_attr( $metadata['sender_name'] ); ?>"/>
                                    <p>
										<?php _e( 'This field defines the name of the sender (e.g. Max Mustermann).', 'double-opt-in' ); ?>
                                    </p>
                                </div>
                            </div>

                            <div class="option">
                                <div class="label">
                                    <label for="<?php echo esc_attr( $id ); ?>-subject">
										<?php echo esc_html( __( 'Subject', 'double-opt-in' ) ); ?>
                                    </label>
                                </div>
                                <div class="input">
                                    <input type="text" id="<?php echo esc_attr( $id ); ?>-subject"
                                           name="<?php echo esc_attr( $id ); ?>[subject]"
                                           class="large-text code" size="70"
                                           value="<?php echo esc_attr( $metadata['subject'] ); ?>"/>
                                    <p>
										<?php _e( 'Enter a custom subject for the Double-Opt-In mail (e.g.: Please confirm your registration).', 'double-opt-in' ); ?>
                                    </p>
                                </div>
                            </div>

                            <div class="option">
                                <div class="label">
                                    <label for="<?php echo esc_attr( $id ); ?>-body">
										<?php echo esc_html( __( 'Template', 'double-opt-in' ) ); ?>
                                    </label>
                                </div>
                                <div class="input">
                                    <div class="preview">
                                        <div class="preview-item">
                                            <div class="preview-item-inner <?php if ( $metadata['template'] == 'blank' ) {
												echo 'active';
											}; ?>">
                                                <img src="<?php echo esc_url( plugin_dir_url( dirname( dirname( __FILE__ ) ) ) . 'mails/blank.png' ); ?>"
                                                     class="f12-cf7-templateloader-preview" data-template="blank"
                                                     title="Blank"/>
                                            </div>
                                        </div>
                                        <div class="preview-item">
                                            <div class="preview-item-inner <?php if ( $metadata['template'] == 'newsletter_en' ) {
												echo 'active';
											}; ?>">
                                                <img src="<?php echo esc_url( plugin_dir_url( dirname( dirname( __FILE__ ) ) ) . 'mails/newsletter_en.png' ); ?>"
                                                     class="f12-cf7-templateloader-preview" title="Newsletter EN"
                                                     data-template="newsletter_en" alt=""/>
                                            </div>
                                        </div>
                                        <div class="preview-item">
                                            <div class="preview-item-inner <?php if ( $metadata['template'] == 'newsletter_en_2' ) {
												echo 'active';
											}; ?>">
                                                <img src="<?php echo esc_url( plugin_dir_url( dirname( dirname( __FILE__ ) ) ) . 'mails/newsletter_en_2.png' ); ?>"
                                                     class="f12-cf7-templateloader-preview" title="Newsletter EN 2"
                                                     data-template="newsletter_en_2"/>
                                            </div>
                                        </div>
                                        <div class="preview-item">
                                            <div class="preview-item-inner <?php if ( $metadata['template'] == 'newsletter_en_3' ) {
												echo 'active';
											}; ?>">
                                                <img src="<?php echo esc_url( plugin_dir_url( dirname( dirname( __FILE__ ) ) ) . 'mails/newsletter_en_3.png' ); ?>"
                                                     class="f12-cf7-templateloader-preview" title="Newsletter EN 3"
                                                     data-template="newsletter_en_3"/>
                                            </div>
                                        </div>
                                    </div>
									<?php
									$TemplateList = new HTMLSelect( $id . '[template]', array(
										'blank'           => 'blank',
										'newsletter_en'   => 'newsletter_en',
										'newsletter_en_2' => 'newsletter_en_2',
										'newsletter_en_3' => 'newsletter_en_3'
									), array(
										'class' => array( 'f12-cf7-templateloader' ),
										'style' => array( 'display:none;' )
									) );
									$TemplateList->setOptionSelectedByKey( $metadata['template'] );
									echo wp_kses( $TemplateList->get(), array(
										'select' => array(
											'style' => array(),
											'class' => array(),
											'name'  => array()
										),
										'option' => array(
											'value'    => array(),
											'selected' => array()
										)
									) );
									?>
                                </div>
                            </div>

                            <div class="option">
                                <div class="label">
                                    <label for="<?php echo esc_attr( $id ); ?>-body">
										<?php echo esc_html( __( 'Message body', 'double-opt-in' ) ); ?>
                                    </label>
                                </div>
                                <div class="input">
                                    <textarea id="<?php echo esc_attr( $id ); ?>-body"
                                              name="<?php echo esc_attr( $id ); ?>[body]"
                                              cols="100" rows="18"
                                              class="large-text code"><?php echo esc_textarea( $metadata['body'] ); ?></textarea>
                                    <p>
										<?php _e( 'Enter the Message you want to sent to your customer. Do not forget to add the Double-Opt-In tag ([doubleoptinlink]) e.g.:', 'double-opt-in' ); ?>
                                        <code>
                                            &lt;a href="[doubleoptinlink]"&gt;Confirm the registration&lt;/a&gt;
                                        </code>
                                    </p>
                                    <p>
										<?php _e( 'These placeholders are available for the opt-in Message body: ', 'double-opt-in' ); ?>
                                    </p>
                                    <p>
                                        <code>[doubleoptinlink],[doubleoptin_form_url],[doubleoptin_form_subject],[doubleoptin_form_date],[doubleoptin_form_time],[_site_admin_email],<?php
											$arrayTags = $this->getTags( $post );
											foreach ( $arrayTags as $key => $value ) {
												$arrayTags[ $key ] = "[" . esc_html( $value ) . "]";
											}
											echo implode( ",", array_filter( $arrayTags ) );
											?>
                                        </code>
                                    </p>
                                </div>
                            </div>
                        </div>


						<?php do_action( 'f12_cf7_doubleoptin_admin_panel', $post, $metadata, $id ); ?>
						<?php wp_nonce_field( 'f12_cf7_doubleoptin_save_form_action', 'f12_cf7_doubleoptin_save_form_nonce' ); ?>
                    </div>
                </div>
            </div>
			<?php
		}
	}
}