<?php

class Post_SMTP_Email_Content {
	
	private $access_token = '';
	private $log_id = '';
	private $type = '';
	
	public function __construct() {
		
		if( 
			is_admin()
			&&
			isset( $_GET['access_token'] ) 
			&&
			isset( $_GET['log_id'] ) 
			&&
			isset( $_GET['type'] ) 
		) {
			
			$this->access_token = sanitize_text_field( $_GET['access_token'] );
			$this->log_id = sanitize_text_field( $_GET['log_id'] );
			$this->type = sanitize_text_field( $_GET['type'] );
			
			$this->render_html();
			
		}
		
	} 
	
	public function render_html() {
		
		$device = get_option( 'post_smtp_mobile_app_connection' );
		
		if( empty( $this->access_token ) ) {
			
			wp_send_json_error( 
				array(
					'error'	=>	'Auth token missing.'
				), 
				400 
			);
			
		}
		//Valid Request
		elseif( $device && isset( $device[$this->access_token] ) ) {
			
			if( !class_exists( 'PostmanEmailQueryLog' ) ) {

				require POST_SMTP_PATH . '/Postman/Postman-Email-Log/PostmanEmailQueryLog.php';

			}

			$logs_query = new PostmanEmailQueryLog();

			if( $this->type == 'log' ) {

					$log = $logs_query->get_log( 
						$this->log_id,
						array(
							'from_header',
							'original_to',
							'reply_to_header',
							'time',
							'original_subject',
							'transport_uri',
							'original_message'
						)
					);
				
					if( empty( $log ) ) {
						
						wp_send_json_error(
							array(
								'message'	=> "{$this->type} not found for id {$this->log_id}"
							),
							404
						);
						
					}
				
					$date_format = get_option( 'date_format' );
					$time_format = get_option( 'time_format' );
			
					?>
					<html>
						<head>
							<meta name="viewport" content="width=device-width, initial-scale=1.0">
							<style>
								* {
									box-sizing: border-box;
								}
								table {
									margin-top: 15px;
									font-size: 12px;
								}
								.container {
									margin: 0 auto;
									width: 95%;
								}
								table tbody td {
									padding: 3px;
								}
								.message-body {
									margin-top: 15px;
								}
							</style>
						</head>
						<body>
							<div class="container">
								<table width="100%">
									<tbody>
										<tr>
											<td><strong>From:</strong></td>
											<td><?php echo esc_html( $log['from_header'] ); ?></td>
										</tr>
										<tr>
											<td><strong>To:</strong></td>
											<td><?php echo esc_html( $log['original_to'] ); ?></td>
										</tr>
										<?php if ( ! empty( $log['reply_to_header'] ) ) : ?>
										<tr>
											<td><strong>Reply-To:</strong></td>
											<td><?php echo esc_html( $log['reply_to_header'] ); ?></td>
										</tr>
										<?php endif; ?>
										<tr>
											<td><strong>Date:</strong></td>
											<td><?php echo esc_html( date_i18n( "{$date_format} {$time_format}", $log['time'] ) ); ?></td>
										</tr>
										<tr>
											<td><strong>Subject:</strong></td>
											<td><?php echo esc_html( $log['original_subject'] ); ?></td>
										</tr>
										<tr>
											<td><strong>Delivery-URI:</strong></td>
											<td><?php echo esc_html( $log['transport_uri'] ); ?></td>
										</tr>
									</tbody>
								</table>
								<div class="message-body">
									<?php
									$message = isset( $log['original_message'] ) ? $log['original_message'] : '';

									// Prefer trimming everything before the real HTML document.
									$pos_doctype = stripos( $message, '<!DOCTYPE' );
									$pos_html    = stripos( $message, '<html' );
									$start       = false;

									if ( $pos_doctype !== false ) {
										$start = $pos_doctype;
									} elseif ( $pos_html !== false ) {
										$start = $pos_html;
									}

									if ( $start !== false ) {
										// Drop all MIME preamble / headers above the actual HTML email.
										$message = substr( $message, $start );
									} else {
										// Fallback: strip leading MIME header lines (Content-Type, Content-Transfer-Encoding, etc.).
										$lines       = preg_split( "/\r\n|\n|\r/", $message );
										$clean_lines = array();
										$skipping    = true;

										foreach ( $lines as $line ) {
											if ( $skipping && preg_match( '/^\s*(Content-Type:|Content-Transfer-Encoding:)/i', $line ) ) {
												// Skip header-like lines at the top.
												continue;
											}
											$skipping      = false;
											$clean_lines[] = $line;
										}

										$message = implode( "\n", $clean_lines );
									}

									// Remove any stray broken closing tbody tag fragments that can leak as text.
									$message = preg_replace( '/<\/tbod[^>]*>/i', '', $message );

									echo wp_kses_post( $message );
									?>
								</div>
							</div>
						</body>
					</html>
					<?php
					die;
			}
			
			if( $this->type == 'transcript' ) {

				$log = $logs_query->get_log( 
					$this->log_id,
					array(
						'session_transcript'
					)
				);

				if( empty( $log ) ) {

					wp_send_json_error(
						array(
							'message'	=> "{$this->type} not found for id {$this->log_id}"
						),
						404
					);

				}
				?>
				<html>
					<head>
						<meta name="viewport" content="width=device-width, initial-scale=1.0">
						<style>
							* {
								box-sizing: border-box;
							}
							.container {
								margin: 0 auto;
								width: 95%;
							}
							.message-body {
								margin-top: 15px;
							}
						</style>
					</head>
					<body>
						<div class="container">
							<div class="message-body">
								<pre><?php echo esc_html( $log['session_transcript'] ); ?></pre>
							</div>
						</div>
					</body>
				</html>
				<?php
				die;
			}
			
			if( $this->type == 'details' ) {

				$log = $logs_query->get_log( 
					$this->log_id,
					array(
						'success'
					)
				);

				if( empty( $log ) ) {

					wp_send_json_error(
						array(
							'message'	=> "{$this->type} not found for id {$this->log_id}"
						),
						404
					);

				}
				?>
				<html>
					<head>
						<meta name="viewport" content="width=device-width, initial-scale=1.0">
						<style>
							* {
								box-sizing: border-box;
							}
							.container {
								margin: 0 auto;
								width: 95%;
							}
							.message-body {
								margin-top: 15px;
							}
						</style>
					</head>
					<body>
						<div class="container">
							<div class="message-body">
								<?php echo esc_html( $log['success'] ); ?>
							</div>
						</div>
					</body>
				</html>
				<?php
				die;
			}
			
		}
		else {
			
			wp_send_json_error( 
				array(
					'error'	=>	'Invalid Auth Token.'
				), 
				401 
			);
			
		}
		
	}
	
}

new Post_SMTP_Email_Content();