<?php

// Set error reporting to only show errors and parse errors
error_reporting(E_ERROR | E_PARSE);

// Set the time limit for script execution to unlimited
set_time_limit(-1);

// Set the maximum input time to unlimited
ini_set('max_input_time', '-1');

// Set the maximum execution time to unlimited
ini_set('max_execution_time', '0');

// Start the session
session_start();

// Start output buffering
ob_start();

// Define the constant 'DB_FILE' with the value of 'modname' session variable followed by ".db"
define('DB_FILE', $_SESSION['modname'] . ".db");

// Include the configuration file
require_once './config.php';

// Include the PDO wrapper file
require_once './_pdo.php';

// Include the required class files
require_once "./src/D2Functions.php";
require_once "./src/D2Database.php";
require_once './src/D2Files.php';
require_once './src/D2TxtParser.php';
require_once './src/D2ItemDesc.php';
require_once './src/D2Char.php';
require_once './src/D2CharStructureData.php';
require_once './src/D2ByteReader.php';
require_once './src/D2BitReader.php';
require_once './src/D2Item.php';
require_once './src/D2Char.php';

PDO_Connect("sqlite:" . DB_FILE);

// Create an instance of D2CharStructureData class
$csData = new D2CharStructureData();

$g = $_GET;
$cmd = $g['cmd'];

// Get the file path from the POST data and replace backslashes /
$filePath = $g['filePath'];
//$filePath = str_replace("\\", "\\\\", $filePath);
// Handle the WP check/uncheck
if ($cmd == "wp") {
    $diff = $g['diff'];

    if ($diff == "Norm") {
        $offset = 643;
    }

    if ($diff == "NM") {
        $offset = 667;
    }

    if ($diff == "Hell") {
        $offset = 691;
    }

    /*
      array (size=5)
      'cmd' => string 'wp' (length=2)
      'name' => string '1' (length=1)
      'value' => string '1' (length=1)
      'filePath' => string 'D:\\Diablo II\\MODS\\ironman-dev\\save\\Sorc.d2s' (length=48)
      'diff' => string 'Norm' (length=4)
     */

    $fileContents = file_get_contents($filePath); // Read the contents of the file
    $ByteReader = new D2ByteReader($fileContents); // Create a new instance of D2ByteReader with the file data
    $fileData = $ByteReader->getData(); // Get the data from the ByteReader instance

    $wpBytes = $ByteReader->read($offset, 5, 1);
    $wpBytesToBits = $ByteReader->toBits($wpBytes);

    $BitReader = new D2BitReader($wpBytesToBits);
    $BitReader->setBit($g['name'], $g['value']);

    $newBits = $BitReader->getBits();
    $newBitsToBytes = $ByteReader->bitsToHexString($newBits);

    $ByteReader->writeBytes($offset, $newBitsToBytes);
    $newFileData = $ByteReader->getData();
    $fileSaved = file_put_contents($filePath, $newFileData);
    $checksum = (shell_exec("bin\d2scs.exe \"$filePath\""));

    if ($fileSaved) {
        echo "Success";
    } else {
        echo "Fail";
    }
}


/*
 * array (size=5)
  'cmd' => string 'q' (length=1)
  'name' => string 'Sisters_Burial_Grounds' (length=29)
  'value' => string '1' (length=1)
  'filePath' => string 'D:\\Diablo II\\MODS\\ironman-dev\\save\\Sorc.d2s' (length=48)
  'diff' => string 'Norm' (length=4)

  At each quest offset, read a short, 2 bytes.
  347 => 'Den_Of_Evil',
  349 => 'Sisters_Burial_Grounds',
  351 => 'Tools_Of_The_Trade',
  353 => 'The_Search_For_Cain',
  355 => 'The_Forgotten_Tower',
  357 => 'Sisters_To_The_Slaughter',

  Each short is 16 bytes.
 *
 * 0xFEFF = 11111110 11111111
 * Short #0	Den of Evil	Bit 4 is set when you enter the Den.

 */

if ($cmd == "q") {
    $diff = $g['diff'];
    if ($diff == "Norm") {
        $qArray = array_flip($csData->qNorm);
        $questOffset = $qArray[$g['name']];
    }

    if ($diff == "NM") {
        $qArray = array_flip($csData->qNM);
        $questOffset = $qArray[$g['name']];
    }

    if ($diff == "Hell") {
        $qArray = array_flip($csData->qHell);
        $questOffset = $qArray[$g['name']];
    }

    // Open the file in binary mode for both reading and writing
    $fp = fopen($filePath, "rb+");

    if ($g['value']) {
        // Set the file pointer position to the quest offset
        fseek($fp, $questOffset);

        // Write the byte value 0xFE at the current position
        fwrite($fp, pack('C', 0xFE));

        // Move the file pointer to the next position
        fseek($fp, $questOffset + 1);

        // Write the byte value 0xFF at the current position
        fwrite($fp, pack('C', 0xFF));

        echo "Quest Just Finished, Collect Reward!";
    } else {
        // Set the file pointer position to the quest offset
        fseek($fp, $questOffset);

        // Write the byte value 0xFE at the current position
        fwrite($fp, pack('C', 0x00));

        // Move the file pointer to the next position
        fseek($fp, $questOffset + 1);

        // Write the byte value 0xFF at the current position
        fwrite($fp, pack('C', 0x00));

        echo "Quest Not Started Yet!";
    }

    $checksum = (shell_exec("bin\d2scs.exe \"$filePath\""));
    fclose($fp);
}

$cmd = $_GET['cmd'];
$name = $_GET['name'];
$value = $_GET['value'];

$char = new D2Char(basename($filePath));

switch ($cmd) {
    case "CharacterName":
        // Handle CharacterName command
        // Validate the character name length
        if (strlen($value) < 2 || strlen($value) > 15) {
            echo "Character name must be between 2 and 15 characters long.";
            // You can handle the error case accordingly (e.g., return an error response)
            // Additional validation checks can be added here as needed
        } else {
            // Validate the character name format
            $pattern = '/^[A-Za-z0-9_-]+$/'; // Regular expression pattern for allowed characters
            if (!preg_match($pattern, $value)) {
                echo "\nCharacter name contains invalid characters. Only alphabets, numbers, underscore, and dash are allowed.";
                // Handle the error case accordingly
            } else {
                // The character name is valid, proceed with further processing
                $char->setChar($cmd, $value);
                echo "\nCharacter Name and filename Changed";
            }
        }
        echo "\nHandling CharacterName command - Name: $value, File Path: $filePath";
        break;
    case "CharacterClass":
        // Handle CharacterClass command
        $char->setChar($cmd, $value);
        echo "Handling CharacterClass command - Class: $value, File Path: $filePath";
        break;
    case "CharacterLevel":
        // Handle CharacterLevel command
        $char->setChar($cmd, $value);
        echo "Handling CharacterLevel command - Level: $value, File Path: $filePath";
        break;

    // handle difficulty wierdly
    case "Normal":
        $char->setChar("Difficulty", $value);
        echo "Handling Difficulty command - Difficulty: $value, File Path: $filePath";
        break;
    case "NM":
        $char->setChar("Difficulty", $value);
        echo "Handling Difficulty command - Difficulty: $value, File Path: $filePath";
        break;
    case "Hell":
        $char->setChar("Difficulty", $value);
        echo "Handling Difficulty command - Difficulty: $value, File Path: $filePath";
        break;

    // skills
    case "skills":
        //var_dump($char->cData);
        $char->setSkill($name, $value);
        echo "Handling skills command - Skill: $name, Value: $value, File Path: $filePath";
        break;

    // stats
// Handle strength command
    case "strength":
        $char->setStat("strength", $value); // Set the "strength" stat to the provided value
        echo "Handling strength command - Value: $value, File Path: $filePath"; // Display a message indicating the handling of the strength command
        break;

// Handle dexterity command
    case "dexterity":
        $char->setStat("dexterity", $value); // Set the "dexterity" stat to the provided value
        echo "Handling dexterity command - Value: $value, File Path: $filePath"; // Display a message indicating the handling of the dexterity command
        break;

// Handle vitality command
    case "vitality":
        $char->setStat("vitality", $value); // Set the "vitality" stat to the provided value
        echo "Handling vitality command - Value: $value, File Path: $filePath"; // Display a message indicating the handling of the vitality command
        break;

// Handle energy command
    case "energy":
        $char->setStat("energy", $value); // Set the "energy" stat to the provided value
        echo "Handling energy command - Value: $value, File Path: $filePath"; // Display a message indicating the handling of the energy command
        break;

// Handle hitpoints command
    case "hitpoints":
        $char->setStat("hitpoints", $value); // Set the "hitpoints" stat to the provided value
        echo "Handling hitpoints command - Value: $value, File Path: $filePath"; // Display a message indicating the handling of the hitpoints command
        break;

// Handle maxhp command
    case "maxhp":
        $char->setStat("maxhp", $value); // Set the "maxhp" stat to the provided value
        echo "Handling maxhp command - Value: $value, File Path: $filePath"; // Display a message indicating the handling of the maxhp command
        break;

// Handle mana command
    case "mana":
        $char->setStat("mana", $value); // Set the "mana" stat to the provided value
        echo "Handling mana command - Value: $value, File Path: $filePath"; // Display a message indicating the handling of the mana command
        break;

// Handle maxmana command
    case "maxmana":
        $char->setStat("maxmana", $value); // Set the "maxmana" stat to the provided value
        echo "Handling maxmana command - Value: $value, File Path: $filePath"; // Display a message indicating the handling of the maxmana command
        break;

// Handle stamina command
    case "stamina":
        $char->setStat("stamina", $value); // Set the "stamina" stat to the provided value
        echo "Handling stamina command - Value: $value, File Path: $filePath"; // Display a message indicating the handling of the stamina command
        break;

// Handle maxstamina command
    case "maxstamina":
        $char->setStat("maxstamina", $value); // Set the "maxstamina" stat to the provided value
        echo "Handling maxstamina command - Value: $value, File Path: $filePath"; // Display a message indicating the handling of the maxstamina command
        break;

    // default command
    default:
        // Handle unknown command
        echo "Unknown command: $cmd";
        break;
}