const { app, BrowserWindow, screen, ipcMain, BrowserView } = require("electron");
const fs = require("fs");
const { win32 } = require("path");
const sysInf = require("systeminformation");

var aWin2 = undefined;

var preLoadedAmount = 0;

var networkInterfaces = [];

/// !!!-----------!!!
/// PAGE LOOKUP TABLE
var preloadedPageLookup = {};

var pageLookup = {};
pageLookup["index"] = "index.html";
pageLookup["session"] = "sessions.html";
pageLookup["header"] = "header.html"



for (const [key, value] of Object.entries(pageLookup)) {
  // check if the property/key is defined in the object itself, not in parent
  if (pageLookup.hasOwnProperty(key)) {           
      fs.readFile('ui_templates/' + value, 'utf8', function (err,data) {
        preLoadedAmount++;
        if (err) {
          return console.log(err);
        }
        preloadedPageLookup[key] = data;
        
      });
  }
}

function loadPage(name){
  load = preloadedPageLookup[name]
  if(load == undefined){
    load = fs.readFileSync("ui_templates/" + pageLookup[name]).toString();
    console.warn("Loading fallback for page " + name);
  }
  return(load)
}

/*
fs.readFile('ui_templates/index.html', 'utf8', function (err,data) {
  preLoadedAmount++;
  if (err) {
    return console.log(err);
  }
  preloadedPageLookup["index"] = data;
});
*/
function createWindow() {
  const win = new BrowserWindow({
    width: screen.getPrimaryDisplay().size.width,
    height: screen.getPrimaryDisplay().size.height,
    webPreferences: {
      nodeIntegration: true,
    },
  });
  win.setFullScreen(true);
  win.setMenuBarVisibility(false);
  win.setAutoHideMenuBar(true);


  main = loadPage("index")
  header = loadPage("header")

  //
  //header = fs.readFileSync("ui_templates/header.html").toString();
  toLoad = header + main;
  fs.writeFileSync("ui_templates/temp.html", toLoad)
  //win.loadURL("data:text/html;charset=utf-8," + encodeURI(toLoad));
  win.loadFile("ui_templates/temp.html")
  return(win)
}

function createStartupInfo() {
  const win2 = new BrowserWindow({
    width: 400,
    height: 200,
    frame: false,
    webPreferences: {
      nodeIntegration: true,
    },
  });

  win2.setFullScreen(false);
  win2.setAlwaysOnTop(true);
  win2.loadFile("ui_templates/startUp.html");
  win2.show();
  return win2;
}

function doneLoading() {
  var fadeOutI = 1;
  if(Object.keys(pageLookup).length == preLoadedAmount){
    aWin2.webContents.executeJavaScript(
      "document.getElementById('current').innerHTML = 'Done';"
    );
    var fadeIntervall = setInterval(function () {
      try {
        if (fadeOutI < 0) {
          clearInterval(fadeIntervall);
          aWin2.webContents.executeJavaScript("window.close()");
        } else {
          aWin2.setOpacity(fadeOutI);
          fadeOutI = fadeOutI - 0.05;
        }
      } catch (e) {
        console.warn("Startup window got destroyed!");
        clearInterval(fadeIntervall);
      }
    }, 20);
  }else{
    console.warn("Had to reschedule load finish")
    setTimeout(doneLoading, 200);
  }
  
  //aWin2.webContents.executeJavaScript("window.close()")
}

function init() {
  win = createWindow();
  aWin2 = createStartupInfo();
  sysInf.networkInterfaces(function (data) {
    networkInterfaces = data;
  });
  setInterval(function(){
    sysInf.networkInterfaces(function (data) {
      networkInterfaces = data;
    });
  }, 2 * 60 * 1000) // Update network interface every 2 mins
  
  setTimeout(doneLoading, 2000);
  ipcMain.on("asynchronous-message", (event, arg) => {
    console.log(arg); // prints "ping"
    if (arg == "hasBattery") {
      event.reply("asynchronous-reply", sysInf.battery().hasbattery);
    }
  });

  ipcMain.on("synchronous-message", (event, arg) => {
    //console.log(arg) // prints "ping"
    if (String(arg).includes("hasBattery")) {
      sysInf.battery(function (data) {
        event.returnValue = data.hasbattery;
        //event.returnValue = true
      });
    }else if (String(arg).includes("getBatteryLevel")) {
      sysInf.battery(function (data) {
        //event.returnValue = 2
        event.returnValue = data.percent;
      });
    }else if (String(arg).includes("loadOverride")) {
      event.returnValue = false;
    }else if (String(arg).includes("getNetworks")) {

      /*sysInf.networkInterfaces(function (data) {
        event.returnValue = data;
      });*/
      event.returnValue = networkInterfaces;

    }else if (String(arg).includes("set:newNetwork")) {
      fs.writeFile('usrStore/lastNetwork.data', String(arg).split("|")[1], function (err) {
        if (err) return console.log(err);
        console.log('Saved new main network');
      });
      event.returnValue = "";
    } else if (String(arg).includes("getMainNetwork")) {
      try{
        last = fs.readFileSync("usrStore/lastNetwork.data")
        console.log(last.toString())
        event.returnValue = last.toString();
      }catch(e){
        sysInf.networkInterfaces(function (data) {
          fs.writeFileSync("usrStore/lastNetwork.data", data[0].ifaceName);
          event.returnValue = data[0].ifaceName
        });
       
      }
      
    }else if (String(arg).includes("PAGE:change")) {
      newPage = String(arg).split(".")[1]
      main = header = loadPage(newPage)

      header = loadPage("header")
      toLoad = header + main;
      console.log(toLoad)
      const timestamp = Date.now();
      fs.writeFileSync("ui_templates/temp.html", toLoad)
      const timestamp2 = Date.now();
      win.loadFile("ui_templates/temp.html")
      const timestamp3 = Date.now();
      //win.loadFile("ui_templates/header.html")
      console.log("LOADTIMES: ", (timestamp2 - timestamp), (timestamp3 - timestamp2), (timestamp3 - timestamp))
      

      event.returnValue = "";
    }else{
      event.returnValue = "ERR:UNKNOW_CMD"
    }
  });
}

app.whenReady().then(init);

app.on("window-all-closed", () => {
  if (process.platform !== "darwin") {
    app.quit();
  }
});

app.on("activate", () => {
  if (BrowserWindow.getAllWindows().length === 0) {
    createWindow();
  }
});