const express = require("express");
const fs = require("fs");
const bodyParser = require("body-parser");
const ws = require("ws");
const helper = require("./helpers.js");
const loggy = require("./logging");
const Eta = require("eta");
const _ = require("underscore");
const path = require("path");

loggy.init(true);

loggy.log("Preparing server", "info", "Server");
const app = express();

loggy.log("Preparing static routes", "info", "Server");
app.use(express.static("static"));

loggy.log("Preparing middlewares", "info", "Server");
app.use(bodyParser.json());
app.use(
  bodyParser.urlencoded({
    // to support URL-encoded bodies
    extended: true,
  })
);

// Allowed urls for requests to /assets/
const allowsURLs = [
  "bootstrap-icons/font/bootstrap-icons.css",
  "js-cookie/dist/js.cookie.min.js",
  "bootstrap/dist/css/bootstrap.min.css",
  "mdbootstrap/css/style.css",
  "bootstrap/dist/js/bootstrap.bundle.min.js",
  "jquery/dist/jquery.min.js",
  "darkreader/darkreader.js",
  "bootstrap-duration-picker/dist/bootstrap-duration-picker.css",
  "flatpickr/dist/flatpickr.min.css",
  "bootstrap-duration-picker/dist/bootstrap-duration-picker-debug.js",
  "flatpickr/dist/flatpickr.js",
  "bootstrap-icons/font/fonts/bootstrap-icons.woff2",
  "bootstrap/dist/css/bootstrap.min.css.map",
  "less/dist/less.min.js",
  "less/dist/less.min.js.map",
  "mdbootstrap/js/mdb.min.js",
];

let loadedData = {};

loggy.log("Loading config", "info", "Config");
if (fs.existsSync("data-persistence.json")) {
  const loadedDataRaw = fs.readFileSync("data-persistence.json", "utf8");
  loadedData = JSON.parse(loadedDataRaw);
} else {
  console.warn("Unable to load persistent data");
}

currentState = {
  mode: "clock",
  countdownGoal: new Date().getTime(),
  showMilliSeconds: true,
  defaultFullScreen: true,
  timeAmountInital: 0,
  timerRunState: false,
  pauseMoment: 0,
  showTimeOnCountdown: true,
  message: "",
  showMessage: false,
  messageAppearTime: 0,
  showProgressbar: true,
  colorSegments: {
    40000: "yellow",
    20000: "#FFAE00",
    5000: "#ff0000",
    START: "green",
  },
  textColors: {},
  srvTime: 0,
  enableColoredText: true,
  debug: false,
  enableOverrun: true,
  sessionToken:
    Math.random().toString(36).substring(2, 15) +
    Math.random().toString(36).substring(2, 15),
};

let configObject = {
  language: "en_uk",
  port: 3000,
};
if (!fs.existsSync("config.json")) {
  fs.writeFileSync("config.json", "{}");
}
const tempJsonText = JSON.parse(fs.readFileSync("config.json", "utf8"));
configObject = _.extend(configObject, tempJsonText);
fs.writeFileSync("config.json", JSON.stringify(configObject));

currentState = Object.assign({}, currentState, loadedData);
currentState.textColors = currentState.colorSegments;

loggy.log("Searching for languages", "info", "Language");
const languagesRaw = fs.readdirSync("./lang");
const languages = [];
for (let i = 0; i < languagesRaw.length; i++) {
  if (languagesRaw[i].endsWith(".json")) {
    languages.push(languagesRaw[i].replace(".json", ""));
  }
}
loggy.log("Found " + languages.length + " languages", "info", "Language");

loggy.log("Reading language file", "info", "Language");
let languageProfile = JSON.parse(
  fs.readFileSync("lang/" + configObject.language + ".json", "utf8")
);

loggy.log("Preparing websocket", "info", "Websocket");
const wsServer = new ws.Server({ noServer: true });
wsServer.on("connection", (socket) => {
  socket.on("message", function incoming(data) {
    if (data.toString() == "new client") {
      updatedData();
    }
  });
});

wsServer.broadcast = function broadcast(data) {
  wsServer.clients.forEach(function each(client) {
    // The data is coming in correctly
    // console.log(data);
    client.send(data);
  });
};

let updatey = undefined;

function updatedData() {
  currentState.srvTime = new Date().getTime();
  wsServer.broadcast(JSON.stringify(currentState));
  clearTimeout(updatey);
  setTimeout(updatedData, 5000);
}

loggy.log("Preparing routes", "info", "Server");
app.get("/", function (req, res) {
  const data = fs.readFileSync("templates/newAdminPanel.html", "utf8");
  try {
    res.send(
      Eta.render(data, {
        lang: languageProfile,
        additional: {
          languages: languages,
        },
      })
    );
  } catch (e) {
    loggy.log("Error rendering template", "error", "Server");
    const dataN = fs.readFileSync("templates/brokenTranslation.html", "utf8");
    res.send(
      Eta.render(dataN, {
        additional: {
          languages: languages,
        },
      })
    );
  }
});

app.get("/timer", function (req, res) {
  const data = fs.readFileSync("templates/ng-timerview.html", "utf8");
  res.send(data);
});

app.get("/timer-old", function (req, res) {
  const data = fs.readFileSync("templates/timerPage.html", "utf8");
  res.send(data);
});

app.get("/api/v1/data", function (req, res) {
  currentState.srvTime = new Date().getTime();
  res.json(currentState);
});

app.get("/api/v1/system", function (req, res) {
  const tempPkgFile = fs.readFileSync("package.json", "utf8");
  const tempPkgObj = JSON.parse(tempPkgFile);
  const systemData = {
    uptime: process.uptime(),
    memoryUsage: process.memoryUsage(),
    cpuUsage: process.cpuUsage(),
    platform: process.platform,
    arch: process.arch,
    nodeVersion: process.version,
    nodePath: process.execPath,
    nodeArgv: process.argv,
    nodeExecArgv: process.execArgv,
    nodeCwd: process.cwd(),
    nodeEnv: process.env,
    nodeConfig: process.config,
    nodeTitle: process.title,
    systemVersion: tempPkgObj.version,
  };
  res.json(systemData);
});

app.get("/api/v1/set/mode", function (req, res) {
  currentState.mode = req.query.mode;
  updatedData();
  res.json({ status: "ok" });
});

app.get("/api/v1/set/layout/showMillis", function (req, res) {
  const resy = helper.wrapBooleanConverter(req.query.show, res);
  if (resy != undefined) {
    currentState.showMilliSeconds = resy;
    if (req.query.persist === "true") {
      dataToBeWritten.showMilliSeconds = currentState.showMilliSeconds;
    }
    res.json({ status: "ok" });
  }
  updatedData();
});

app.get("/api/v1/set/timerGoal", function (req, res) {
  currentState.countdownGoal = new Date(parseInt(req.query.time)).getTime(); // ToDO error handling
  res.json({ status: "ok" });
  updatedData();
});

app.get("/api/v1/set/addMillisToTimer", function (req, res) {
  currentState.timeAmountInital = req.query.time;
  currentState.countdownGoal = new Date().getTime() + parseInt(req.query.time);
  currentState.pauseMoment = new Date().getTime();
  res.json({ status: "ok" });
  updatedData();
});

app.get("/api/v1/set/relativAddMillisToTimer", function (req, res) {
	
	currentState.timeAmountInital += parseInt(req.query.time);
	currentState.countdownGoal = currentState.countdownGoal + parseInt(req.query.time);
	// currentState.pauseMoment = new Date().getTime();
	
	res.json({ status: "ok" });
	updatedData();
});

app.get("/api/v1/ctrl/timer/pause", function (req, res) {
  currentState.timerRunState = false;
  currentState.pauseMoment = new Date().getTime();
  res.json({ status: "ok" });
  updatedData();
});

app.get("/api/v1/ctrl/timer/play", function (req, res) {
  if (currentState.timerRunState == false) {
    currentState.timerRunState = true;
    currentState.countdownGoal +=
      new Date().getTime() - currentState.pauseMoment;
  }
  res.json({ status: "ok" });
  updatedData();
});

app.get("/api/v1/ctrl/timer/restart", function (req, res) {
  currentState.countdownGoal =
    new Date().getTime() + parseInt(currentState.timeAmountInital);
  res.json({ status: "ok" });
  updatedData();
});

app.get("/api/v1/set/layout/showTime", function (req, res) {
  const resy = helper.wrapBooleanConverter(req.query.show, res);
  if (resy != undefined) {
    currentState.showTimeOnCountdown = resy;
    if (req.query.persist === "true") {
      dataToBeWritten.showTimeOnCountdown = currentState.showTimeOnCountdown;
    }
    res.json({ status: "ok" });
  }
  updatedData();
});

app.get("/api/v1/set/enableOverrun", function (req, res) {
  const resy = helper.wrapBooleanConverter(req.query.enable, res);
  if (resy != undefined) {
    currentState.enableOverrun = resy;
    if (req.query.persist === "true") {
      dataToBeWritten.enableOverrun = currentState.enableOverrun;
    }
    res.json({ status: "ok" });
  }
  updatedData();
});

app.get("/api/v1/set/progressbar/show", function (req, res) {
  currentState.showProgressbar = req.query.show === "true";
  if (req.query.persist === "true") {
    dataToBeWritten.showProgressbar = currentState.showProgressbar;
  }
  res.json({ status: "ok" });
  updatedData();
});

app.get("/api/v1/set/progressbar/colors", function (req, res) {
  try {
    let data = req.query.colors;
    if (req.query.isBase64 === "true") {
      data = atob(data);
    }
    currentState.colorSegments = JSON.parse(data);
    if (req.query.persist === "true") {
      dataToBeWritten.colorSegments = currentState.colorSegments;
    }
    res.json({ status: "ok" });
  } catch (error) {
    res.json({ status: "error", message: error });
    console.error(error);
  }
  updatedData();
});

app.get("/api/v1/set/text/colors", function (req, res) {
  try {
    if (req.query.copy === "true") {
      currentState.textColors = currentState.colorSegments;
      res.json({ status: "ok" });
    } else {
      let data = req.query.colors;
      if (req.query.isBase64 === "true") {
        data = atob(data);
      }
      console.debug(data);
      currentState.textColors = JSON.parse(data);
      if (req.query.persist === "true") {
        dataToBeWritten.textColors = currentState.textColors;
      }
    }
    res.json({ status: "ok" });
  } catch (error) {
    res.json({ status: "error", message: error });
    console.error(error);
  }
  updatedData();
});

app.get("/api/v1/set/text/enableColoring", function (req, res) {
  currentState.enableColoredText = req.query.enable === "true";
  if (req.query.persist === "true") {
    dataToBeWritten.enableColoredText = currentState.enableColoredText;
  }
  res.json({ status: "ok" });
  updatedData();
});

app.get("/api/v1/ctrl/message/show", function (req, res) {
  currentState.message = req.query.msg;
  currentState.showMessage = true;
  currentState.messageAppearTime = new Date().getTime();
  res.json({ status: "ok" });
  updatedData();
});

app.get("/api/v1/debug", function (req, res) {
  currentState.debug = req.query.enable === "true";
  res.json({ status: "ok" });
  updatedData();
});

app.get("/api/v1/ctrl/message/hide", function (req, res) {
  currentState.showMessage = false;
  res.json({ status: "ok" });
  updatedData();
});

app.get("/api/v1/storage/commit", function (req, res) {
  const tempString = JSON.stringify(dataToBeWritten);
  try {
    fs.writeFileSync("data-persistence.json", tempString);
    res.json({ status: "ok" });
  } catch (error) {
    res.json({ status: "error", reason: error });
  }
  updatedData();
});

app.get("/api/v1/storage/delete", function (req, res) {
  if (req.query.delete === "true") {
    if (fs.existsSync("data-persistence.json")) {
      fs.unlinkSync("data-persistence.json");
      res.json({ status: "ok" });
    } else {
      res.json({ status: "error", reason: "No persistence data was found" });
    }
  } else {
  }
  res.json({ status: "error", reason: "Missing delete argument" });
  updatedData();
});

// UI Routes
// Returns an object containg all available languages
app.get("/api/ui/v1/lang/list", function handleLangList(req, res) {
  const tempRespObject = {
    status: "ok",
    languages: languages,
  };
  res.json(tempRespObject);
});

app.get("/api/ui/v1/lang/set", function (req, res) {
  if (req.query.lang == undefined || req.query.lang == "") {
    res.json({ status: "error", reason: "Missing language" });
    return;
  }
  const testLang = req.query.lang;
  loggy.log("Reloading language file", "info", "Language");
  if (!fs.existsSync("lang/" + testLang + ".json")) {
    loggy.log(
      "Language reload failed, file does not exist",
      "error",
      "Language"
    );
    res
      .status(500)
      .json({ status: "error", reason: "Language file not found" });
    return;
  }
  const tempLang = fs.readFileSync("lang/" + testLang + ".json", "utf8");
  const tempLangObj = helper.tryToParseJson(tempLang);
  if (!tempLangObj) {
    loggy.log("Language reload failed, file is not valid", "error", "Language");
    res
      .status(500)
      .json({ status: "error", reason: "Language file is not valid" });
    return;
  }
  if (tempLangObj._metadata == undefined) {
    loggy.log(
      "Language reload failed, file is not valid, metadata missing",
      "error",
      "Language"
    );
    res
      .status(500)
      .json({ status: "error", reason: "Language file is not valid" });
    return;
  }
  loggy.log(
    "Language reloaded, loaded " +
      tempLangObj._metadata.lang +
      "@" +
      tempLangObj._metadata.version,
    "info",
    "Language"
  );
  configObject.language = req.query.lang;
  languageProfile = tempLangObj;
  res.status(200).json({ status: "ok" });
  fs.writeFileSync("config.json", JSON.stringify(configObject));
});

app.use("/assets/*", function handleModuleFiles(req, res) {
  if (allowsURLs.indexOf(req.params[0]) > -1) {
    res.sendFile(path.join(__dirname, "node_modules", req.params[0]));
  } else {
    loggy.log(
      "Attempt to access restricted asset file " + req.params[0],
      "error",
      "Security"
    );
    res.status(403).json({
      status: "error",
      reason: "Access to restricted asset file denied",
    });
  }
  // console.log(recordedURLs)
});

app.use(function (req, res, next) {
  res.status(404);
  loggy.log("Server responded with 404 error", "warn", "Server", true);

  // respond with html page
  if (req.accepts("html")) {
    const data = fs.readFileSync("templates/errorPages/404.html", "utf8");
    res.status(404);
    res.send(data);
    return;
  }

  // respond with json
  if (req.accepts("json")) {
    res.json({ error: "Not found" });
    return;
  }

  // default to plain-text. send()
  res.type("txt").send("Not found");
});

/*app.use(function(err, req, res, next) {
  console.error(err.stack);
  if(String(err.stack).includes("TypeError: Cannot read properties of undefined")) {
	const data = fs.readFileSync("templates/brokenTranslation.html", "utf8");
	res.send(data);
  }else{
	res.status(500).send('Something broke!');
  }
 
});*/

loggy.log("Starting server", "info", "Server");

const port = configObject.port;

process.on("SIGINT", function () {
  loggy.log(
    "Caught interrupt signal and shutting down gracefully",
    "info",
    "Shutdown"
  );
  server.close(); // Make the express server stop
  loggy.log("Goodbye! 👋", "magic", "Shutdown", true);
  loggy.close(); // Close and write log
  process.exit(); // Quit the application
});

const server = app.listen(port);
server.on("upgrade", (request, socket, head) => {
  wsServer.handleUpgrade(request, socket, head, (socket) => {
    wsServer.emit("connection", socket, request);
  });
});

loggy.log("=======================", "info", "", true);
loggy.log("Server running on port " + port, "magic", "", true);
loggy.log(
  "Visit http://localhost:" + port + "/timer for the timer view",
  "magic",
  "",
  true
);
loggy.log(
  "Visit http://localhost:" + port + " for the admin view",
  "magic",
  "",
  true
);
loggy.log("=======================", "info", "", true);