<?php
declare(strict_types=1);
session_start();

if (empty($_SESSION['miter'])) {
	header('Location: ../../index.php');
	exit;
}

include '../admin/otc.php';
$g_date = date("Y-m-d H:i:s");

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
	// get title
	$tenon_title = $_POST["title"] ?? '';
	// get post
	$tenon_post = str_replace(array("\r\n", "\r", "\n"), "<br>", $_POST["tenon"] ?? '');
	
	// replace file name space
	$title_to_file = str_replace(' ', '_', $tenon_title);
	
	// replace non-file-compliant characters
	$invalid_chars = ['<', '>', ':', '"', '/', '\\', '|', '?', '*', '\'', '#'];
	$title_to_file = str_replace($invalid_chars, '-', $title_to_file);
	
	$title_to_file = basename($title_to_file);

	// get file name
	$tenon_file = "../../tenons/" . $title_to_file . ".txt";
	// complile data
	$tenon_data = $tenon_title . "|&|" . $o_date . "|&|" . $g_date . "|&|" . $tenon_post;

		// errors
		$log_file = __DIR__ . '/../admin/log.txt'; 
		
		$log_custom_error = function($message) use ($log_file, $o_date) {
			$error_log_data = ($o_date ?? ' ') . " -- " . $message . PHP_EOL;
			file_put_contents($log_file, $error_log_data, FILE_APPEND | LOCK_EX);
		};

		if (empty($title_to_file)) { 
		    $log_custom_error("Error: File path is empty.");
		    header('Location: ../../index.php');
		    exit;
		}
		
		$tenon_dir = dirname($tenon_file);
		if (!is_dir($tenon_dir)) { 
		    $log_custom_error("Error: Dir $tenon_dir does not exist.");
		    header('Location: ../../index.php');
		    exit; 
		}
		if (!is_writable($tenon_dir)) { 
		    $log_custom_error("Error: Dir $tenon_dir is not writable.");
		    header('Location: ../../index.php');
		    exit; 
		}
	
	// create and write
	try {
	    $write_status = file_put_contents($tenon_file, $tenon_data, LOCK_EX);
	    if ($write_status === false) { 
	        throw new Exception("Failed to write stream."); 
	    }
	} catch (\Throwable $e) { 
	    $log_custom_error("Exception: " . $e->getMessage());
	}

	header("location:../../index.php?t=" . urlencode($title_to_file));
	exit;
} else {
	header('Location: ../../index.php');
	exit;
}
?>