const fs = require("fs");
global.InstallLocation = undefined;
global.FortniteItems = [];
try {
    let ii = JSON.parse(fs.readFileSync("C:\\ProgramData\\Epic\\UnrealEngineLauncher\\LauncherInstalled.dat"));
    InstallLocation = ii.InstallationList.find(i => i.AppName === "Fortnite").InstallLocation;
} catch (e) { }
if (InstallLocation) {
    let file = fs.createReadStream(InstallLocation + "\\FortniteGame\\Content\\Paks\\pakchunk0-WindowsClient.pak");
    let lb = Buffer.from([]);
    file.on("data", e => {
        let buffer = Buffer.concat([lb, e]);
        lb = buffer.slice(buffer.length - 128);
        let index = 0;
        while (index < buffer.length) {
            if (buffer[index + 0] === 0 && buffer[index + 1] === 65 && buffer[index + 2] === 116 &&
                buffer[index + 3] === 104 && buffer[index + 4] === 101 && buffer[index + 5] === 110 && buffer[index + 6] === 97) {
                let lindex = 7;
                let lstr = "Athena";
                while (buffer[index + lindex]) {
                    lstr += String.fromCharCode(buffer[index + lindex]);
                    ++lindex
                }
                lstr += ":";
                lindex += 2;
                if (buffer[index + lindex - 1] === 139 && buffer[index + lindex] === 0) {
                    while (buffer[index + lindex] !== undefined &&
                        !((buffer[index + lindex] >= 65 && buffer[index + lindex] <= 90) ||
                         (buffer[index + lindex] >= 97 && buffer[index + lindex] <= 122))) {
                        lindex += 1;
                    }
                    while (buffer[index + lindex]) {
                        lstr += String.fromCharCode(buffer[index + lindex]).toLowerCase();
                        lindex += 1;
                    }
                    if (buffer[index + lindex] === 0) {
                        if (!lstr.endsWith("_random") && FortniteItems.indexOf(lstr) === -1) {
                            FortniteItems.push(lstr);
                        }
                    }
                }
            }
            ++index;
        }
    fs.writeFileSync("output.txt",  FortniteItems.join("\n"))
    });
}