<?php
/**
 * Email Manager File
 *
 * @package Airy_Frontend_Forms
 */

// If this file is called directly, abort.
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}
/**
 * Email Manager
 *
 * Handles all email notifications
 *
 * @package Airy_Frontend_Forms
 */
class AFFCF_Email_Manager {

	/**
	 * Send submission received email to user
	 *
	 * @param int    $user_id User ID.
	 * @param int    $post_id Post ID.
	 * @param object $form Form object.
	 * @return bool Success.
	 */
	public function send_submission_received( $user_id, $post_id, $form ) {
		$templates = get_option( 'affcf_email_templates', array() );

		if ( empty( $templates['submission_received']['enabled'] ) ) {
			return false;
		}

		$user = get_userdata( $user_id );
		if ( ! $user ) {
			return false;
		}

		$post = get_post( $post_id );
		if ( ! $post ) {
			return false;
		}

		// Prepare variables.
		$variables = array(
			'{{username}}'        => $user->display_name,
			'{{user_email}}'      => $user->user_email,
			'{{post_title}}'      => $post->post_title,
			'{{post_url}}'        => get_permalink( $post_id ),
			'{{post_id}}'         => $post_id,
			'{{form_name}}'       => $form->form_name,
			'{{submission_date}}' => current_time( 'mysql' ),
			'{{site_name}}'       => get_bloginfo( 'name' ),
			'{{site_url}}'        => home_url(),
		);

		// Replace variables in subject and message.
		$subject = $this->replace_variables(
			$templates['submission_received']['subject'],
			$variables
		);

		$message = $this->replace_variables(
			$templates['submission_received']['message'],
			$variables
		);

		// Add HTML wrapper.
		$message = $this->wrap_html( $message );

		// Set headers for HTML email.
		$headers = array(
			'Content-Type: text/html; charset=UTF-8',
			'From: ' . get_bloginfo( 'name' ) . ' <' . get_option( 'admin_email' ) . '>',
		);

		return wp_mail( $user->user_email, $subject, $message, $headers );
	}

	/**
	 * Send post published email to user
	 *
	 * @param int    $user_id User ID.
	 * @param int    $post_id Post ID.
	 * @param object $form Form object (unused but kept for API consistency).
	 * @return bool Success.
	 */
	public function send_post_published( $user_id, $post_id, $form ) { // phpcs:ignore Generic.CodeAnalysis.UnusedFunctionParameter.FoundAfterLastUsed -- $form kept for API consistency.
		$templates = get_option( 'affcf_email_templates', array() );

		if ( empty( $templates['post_published']['enabled'] ) ) {
			return false;
		}

		$user = get_userdata( $user_id );
		if ( ! $user ) {
			return false;
		}

		$post = get_post( $post_id );
		if ( ! $post ) {
			return false;
		}

		// Prepare variables.
		$variables = array(
			'{{username}}'   => $user->display_name,
			'{{post_title}}' => $post->post_title,
			'{{post_url}}'   => get_permalink( $post_id ),
			'{{site_name}}'  => get_bloginfo( 'name' ),
		);

		// Replace variables.
		$subject = $this->replace_variables(
			$templates['post_published']['subject'],
			$variables
		);

		$message = $this->replace_variables(
			$templates['post_published']['message'],
			$variables
		);

		// Add HTML wrapper.
		$message = $this->wrap_html( $message );

		// Set headers.
		$headers = array(
			'Content-Type: text/html; charset=UTF-8',
			'From: ' . get_bloginfo( 'name' ) . ' <' . get_option( 'admin_email' ) . '>',
		);

		return wp_mail( $user->user_email, $subject, $message, $headers );
	}

	/**
	 * Send post rejected email to user
	 *
	 * @param int    $user_id User ID.
	 * @param int    $post_id Post ID.
	 * @param string $reason Rejection reason.
	 * @param object $form Form object (unused but kept for API consistency).
	 * @return bool Success.
	 */
	public function send_post_rejected( $user_id, $post_id, $reason, $form ) { // phpcs:ignore Generic.CodeAnalysis.UnusedFunctionParameter.FoundAfterLastUsed -- $form kept for API consistency.
		$templates = get_option( 'affcf_email_templates', array() );

		if ( empty( $templates['post_rejected']['enabled'] ) ) {
			return false;
		}

		$user = get_userdata( $user_id );
		if ( ! $user ) {
			return false;
		}

		$post = get_post( $post_id );
		if ( ! $post ) {
			return false;
		}

		// Get edit link.
		$pages        = get_option( 'affcf_default_pages', array() );
		$edit_page_id = ! empty( $pages['custom_edit_page_id'] )
			? $pages['custom_edit_page_id']
			: ( $pages['edit_page_id'] ?? 0 );

		$edit_link = $edit_page_id
			? add_query_arg( 'post_id', $post_id, get_permalink( $edit_page_id ) )
			: '';

		// Prepare variables.
		$variables = array(
			'{{username}}'         => $user->display_name,
			'{{post_title}}'       => $post->post_title,
			'{{rejection_reason}}' => $reason,
			'{{edit_link}}'        => $edit_link,
			'{{site_name}}'        => get_bloginfo( 'name' ),
		);

		// Replace variables.
		$subject = $this->replace_variables(
			$templates['post_rejected']['subject'],
			$variables
		);

		$message = $this->replace_variables(
			$templates['post_rejected']['message'],
			$variables
		);

		// Add HTML wrapper.
		$message = $this->wrap_html( $message );

		// Set headers.
		$headers = array(
			'Content-Type: text/html; charset=UTF-8',
			'From: ' . get_bloginfo( 'name' ) . ' <' . get_option( 'admin_email' ) . '>',
		);

		return wp_mail( $user->user_email, $subject, $message, $headers );
	}

	/**
	 * Send admin notification email
	 *
	 * @param int    $post_id Post ID.
	 * @param object $form Form object.
	 * @return bool Success.
	 */
	public function send_admin_notification( $post_id, $form ) {
		$templates = get_option( 'affcf_email_templates', array() );

		if ( empty( $templates['admin_notification']['enabled'] ) ) {
			return false;
		}

		$post = get_post( $post_id );
		if ( ! $post ) {
			return false;
		}

		$user = get_userdata( $post->post_author );
		if ( ! $user ) {
			return false;
		}

		// Prepare variables.
		$variables = array(
			'{{username}}'        => $user->display_name,
			'{{user_email}}'      => $user->user_email,
			'{{post_title}}'      => $post->post_title,
			'{{form_name}}'       => $form->form_name,
			'{{submission_date}}' => current_time( 'mysql' ),
			'{{admin_edit_link}}' => admin_url( 'post.php?post=' . $post_id . '&action=edit' ),
			'{{site_name}}'       => get_bloginfo( 'name' ),
		);

		// Replace variables.
		$subject = $this->replace_variables(
			$templates['admin_notification']['subject'],
			$variables
		);

		$message = $this->replace_variables(
			$templates['admin_notification']['message'],
			$variables
		);

		// Add HTML wrapper.
		$message = $this->wrap_html( $message );

		// Set headers.
		$headers = array(
			'Content-Type: text/html; charset=UTF-8',
			'From: ' . get_bloginfo( 'name' ) . ' <' . get_option( 'admin_email' ) . '>',
		);

		// Send to admin.
		return wp_mail( get_option( 'admin_email' ), $subject, $message, $headers );
	}

	/**
	 * Replace variables in template
	 *
	 * @param string $template Template string.
	 * @param array  $variables Variables to replace.
	 * @return string Processed template.
	 */
	private function replace_variables( $template, $variables ) {
		return str_replace(
			array_keys( $variables ),
			array_values( $variables ),
			$template
		);
	}

	/**
	 * Wrap message in HTML template
	 *
	 * @param string $content Email content.
	 * @return string HTML email.
	 */
	private function wrap_html( $content ) {
		// Convert line breaks to <br> tags.
		$content = nl2br( $content );

		ob_start();
		?>
		<!DOCTYPE html>
		<html>
		<head>
			<meta charset="UTF-8">
			<meta name="viewport" content="width=device-width, initial-scale=1.0">
			<style>
				body {
					font-family: Arial, sans-serif;
					line-height: 1.6;
					color: #333;
					background-color: #f4f4f4;
					margin: 0;
					padding: 0;
				}
				.email-container {
					max-width: 600px;
					margin: 20px auto;
					background-color: #ffffff;
					border-radius: 5px;
					overflow: hidden;
					box-shadow: 0 2px 5px rgba(0,0,0,0.1);
				}
				.email-header {
					background-color: #0073aa;
					color: #ffffff;
					padding: 20px;
					text-align: center;
				}
				.email-header h1 {
					margin: 0;
					font-size: 24px;
				}
				.email-body {
					padding: 30px;
				}
				.email-footer {
					background-color: #f9f9f9;
					padding: 20px;
					text-align: center;
					font-size: 12px;
					color: #666;
					border-top: 1px solid #e5e5e5;
				}
				a {
					color: #0073aa;
					text-decoration: none;
				}
				a:hover {
					text-decoration: underline;
				}
			</style>
		</head>
		<body>
			<div class="email-container">
				<div class="email-header">
					<h1><?php echo esc_html( get_bloginfo( 'name' ) ); ?></h1>
				</div>
				<div class="email-body">
					<?php echo wp_kses_post( $content ); ?>
				</div>
				<div class="email-footer">
					<p>
						&copy; <?php echo esc_html( gmdate( 'Y' ) ); ?> <?php echo esc_html( get_bloginfo( 'name' ) ); ?>. 
						<?php esc_html_e( 'All rights reserved.', 'airy-frontend-forms' ); ?>
					</p>
					<p>
						<a href="<?php echo esc_url( home_url() ); ?>"><?php esc_html_e( 'Visit Website', 'airy-frontend-forms' ); ?></a>
					</p>
				</div>
			</div>
		</body>
		</html>
		<?php
		return ob_get_clean();
	}
}