const fs = require('node:fs');
const path = require('node:path');

if(process.argv.length < 3)
{
    console.log("error: no input file");
    process.exit(1);
}

var f = fs.readFileSync(process.argv[2]);

var magic = f.toString('hex', 0, 4);
if(magic != "5041434b")
{
    console.log("error: invalid file");
    process.exit(1);
}

var size = f.readUInt32LE(4);
var offset = 40;

for(var i = 0; i < size; i++)
{
    var filesize = f.readUint32LE(offset); offset+=4;
    var fileoffset = f.readUint32LE(offset); offset+=4;
    var mystery = f.readUint32LE(offset); offset+=4;
    var next = f.indexOf(0, offset, 'ascii');
    var name = f.toString('ascii', offset, next).replaceAll("\\", "/");
    offset = next+1;
    console.log("%s; %s", name, mystery);

    fs.mkdirSync(path.dirname(name), { recursive: true });
    var data = fs.createWriteStream(name, 'binary');
    data.end(f.slice(fileoffset, fileoffset+filesize));
}