const Express = require("express");
const express = Express.Router();
const crypto = require("crypto");
const fs = require("fs");
const path = require("path");
const functions = require("./functions.js");

express.use((req, res, next) => {
  // Get raw body in encoding latin1 for ClientSettings
  if (
    req.originalUrl
      .toLowerCase()
      .startsWith("/fortnite/api/cloudstorage/user/") &&
    req.method == "PUT"
  ) {
    req.rawBody = "";
    req.setEncoding("latin1");

    req.on("data", (chunk) => (req.rawBody += chunk));
    req.on("end", () => next());
  } else return next();
});

express.get("/fortnite/api/cloudstorage/system", async (req, res) => {
  const memory = functions.GetVersionInfo(req);

  if (memory.build >= 9.4 && memory.build <= 10.4) {
    return res.status(404).end();
  }

  const dir = path.join(__dirname, "..", "CloudStorage");
  var CloudFiles = [];

  fs.readdirSync(dir).forEach((name) => {
    if (name.toLowerCase().endsWith(".ini")) {
      const ParsedFile = fs.readFileSync(path.join(dir, name), "utf-8");
      const ParsedStats = fs.statSync(path.join(dir, name));

      CloudFiles.push({
        uniqueFilename: name,
        filename: name,
        hash: crypto.createHash("sha1").update(ParsedFile).digest("hex"),
        hash256: crypto.createHash("sha256").update(ParsedFile).digest("hex"),
        length: ParsedFile.length,
        contentType: "application/octet-stream",
        uploaded: ParsedStats.mtime,
        storageType: "S3",
        storageIds: {},
        doNotCache: true,
      });
    }
  });

  res.json(CloudFiles);
});

express.get("/fortnite/api/cloudstorage/system/:file", async (req, res) => {
  const memory = functions.GetVersionInfo(req);

  const file = path.join(__dirname, "..", "CloudStorage", req.params.file);

  if (fs.existsSync(file)) {
    let ParsedFile = fs.readFileSync(file);

    // Fixes kicks ingame on higher versions
    if (req.params.file === "DefaultEngine.ini" && memory.season >= 24) {
      ParsedFile += "\n[ConsoleVariables]\nnet.AllowEncryption=0\n";
    }

    return res.status(200).send(ParsedFile).end();
  } else {
    res.status(200);
    res.end();
  }
});

express.get("/fortnite/api/cloudstorage/user/*/:file", async (req, res) => {
  try {
    if (
      !fs.existsSync(
        path.join(process.env.LOCALAPPDATA, "LawinServer", "ClientSettings")
      )
    ) {
      fs.mkdirSync(
        path.join(process.env.LOCALAPPDATA, "LawinServer", "ClientSettings")
      );
    }
  } catch (err) {}

  res.set("Content-Type", "application/octet-stream");

  if (req.params.file.toLowerCase() != "clientsettings.sav") {
    return res.status(404).json({
      error: "file not found",
    });
  }

  const memory = functions.GetVersionInfo(req);

  var currentBuildID = memory.CL;

  let file;
  if (process.env.LOCALAPPDATA)
    file = path.join(
      process.env.LOCALAPPDATA,
      "LawinServer",
      "ClientSettings",
      `ClientSettings-${currentBuildID}.Sav`
    );
  else
    file = path.join(
      __dirname,
      "..",
      "ClientSettings",
      `ClientSettings-${currentBuildID}.Sav`
    );

  if (fs.existsSync(file)) {
    const ParsedFile = fs.readFileSync(file);

    return res.status(200).send(ParsedFile).end();
  } else {
    res.status(200);
    res.end();
  }
});

express.get("/fortnite/api/cloudstorage/user/:accountId", async (req, res) => {
  try {
    if (
      !fs.existsSync(
        path.join(process.env.LOCALAPPDATA, "LawinServer", "ClientSettings")
      )
    ) {
      fs.mkdirSync(
        path.join(process.env.LOCALAPPDATA, "LawinServer", "ClientSettings")
      );
    }
  } catch (err) {}

  res.set("Content-Type", "application/json");

  const memory = functions.GetVersionInfo(req);

  var currentBuildID = memory.CL;

  let file;
  if (process.env.LOCALAPPDATA)
    file = path.join(
      process.env.LOCALAPPDATA,
      "LawinServer",
      "ClientSettings",
      `ClientSettings-${currentBuildID}.Sav`
    );
  else
    file = path.join(
      __dirname,
      "..",
      "ClientSettings",
      `ClientSettings-${currentBuildID}.Sav`
    );

  if (fs.existsSync(file)) {
    const ParsedFile = fs.readFileSync(file, "latin1");
    const ParsedStats = fs.statSync(file);

    return res.json([
      {
        uniqueFilename: "ClientSettings.Sav",
        filename: "ClientSettings.Sav",
        hash: crypto.createHash("sha1").update(ParsedFile).digest("hex"),
        hash256: crypto.createHash("sha256").update(ParsedFile).digest("hex"),
        length: Buffer.byteLength(ParsedFile),
        contentType: "application/octet-stream",
        uploaded: ParsedStats.mtime,
        storageType: "S3",
        storageIds: {},
        accountId: req.params.accountId,
        doNotCache: true,
      },
    ]);
  } else {
    return res.json([]);
  }
});

express.put("/fortnite/api/cloudstorage/user/*/:file", async (req, res) => {
  try {
    if (
      !fs.existsSync(
        path.join(process.env.LOCALAPPDATA, "LawinServer", "ClientSettings")
      )
    ) {
      fs.mkdirSync(
        path.join(process.env.LOCALAPPDATA, "LawinServer", "ClientSettings")
      );
    }
  } catch (err) {}

  if (req.params.file.toLowerCase() != "clientsettings.sav") {
    return res.status(404).json({
      error: "file not found",
    });
  }

  const memory = functions.GetVersionInfo(req);

  var currentBuildID = memory.CL;

  let file;
  if (process.env.LOCALAPPDATA)
    file = path.join(
      process.env.LOCALAPPDATA,
      "LawinServer",
      "ClientSettings",
      `ClientSettings-${currentBuildID}.Sav`
    );
  else
    file = path.join(
      __dirname,
      "..",
      "ClientSettings",
      `ClientSettings-${currentBuildID}.Sav`
    );

  fs.writeFileSync(file, req.rawBody, "latin1");
  res.status(204).end();
});

module.exports = express;