const express = require('express');
const path = require('path');
const https = require('https')
const got = require('got')
const bodyParser = require('body-parser')
const expressValidator = require('express-validator');
const flash = require ('connect-flash');
const session = require('express-session');
const {postUser} = require('./helpers/functions.js')
const {ensureAuthenticated} = require("./config/auth.js")
const app = express();
const MemoryStore = require('memorystore')(session)
const url = require('url')
const dotenv = require('dotenv');
const fs = require('fs');
let Log = require('./schemas/log.js');
const mongoose = require('mongoose')
dotenv.config();
//mongodb connection




app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'pug');
app.use(flash());
app.use(require('connect-flash')());
app.use(express.static(path.join(__dirname, 'public')));
app.use(express.json())
app.use(bodyParser.urlencoded({
  extended: true
}));
app.use(function(req, res, next) {
  res.locals.messages = require('express-messages')(req, res);
  next();
});
app.set('trust proxy', 1) // trust first proxy
let secure = false
if(process.env.SECURE=='true'||process.env.SECURE=='True'||process.env.SECURE=='TRUE'){secure = true}
let setup = false
if(process.env.SETUP=='true'||process.env.SETUP=='True'||process.env.SETUP=='TRUE'){setup=true}
app.use(session({
  secret: 'fuck shit cunt',
  resave: true,
  store: new MemoryStore({
      checkPeriod: 86400000 // prune expired entries every 24h
    }),
  saveUninitialized: true,
  cookie: { secure: secure, maxAge: 86400000 },
}))
app.use(expressValidator({
  errorFormatter: function(param, msg, value) {
    var namespace = param.split('.')
    , root    = namespace.shift()
    , formParam = root;

    while(namespace.length){
      formParam += '[' + namespace.shift() + ']';
    }
    return{
      param : formParam,
      msg   : msg,
      value : value
      };
  }
}));
app.post('/setup', async function(req, res){


  console.log(req.body)
  let {mongo, url, banksecure, marketplace} = req.body;
  process.env.MONGO = mongo
  process.env.MARKETPLACE = false
  if(marketplace){
    process.env.MARKETPLACE = true
  }
  if(!url.endsWith('/')){
    url=url+"/"
  }
  process.env.BANKAPIURL =url
  process.env.SECURE = false
  if(!banksecure){
    banksecure = false
    process.env.SECURE = false
  }
  process.env.SETUP = true
  fs.writeFileSync('.env', "BANKAPIURL="+process.env.BANKAPIURL+'\n'+"SECURE="+process.env.SECURE+'\n'+"MARKETPLACE="+process.env.MARKETPLACE+'\n'+"MONGO="+process.env.MONGO+'\nSETUP=true')
  dotenv.config();
  if(process.env.MARKETPLACE){
    mongoose.connect(process.env.MONGO,{
      useNewUrlParser: true,
      useUnifiedTopology: true,
      useFindAndModify: true,
    });

    let db = mongoose.connection;
    db.once('open', function(){
      console.log('Connected to MongoDB');
    })

    //check for DB errors
    db.on('error', function(err){
      console.log(err);
    });
  }
  res.redirect('/')
})
app.get('/', async function(req, res){
  if(!process.env.SETUP){
    res.render('setup')
  }else{

    let checkalive;
    try{
      checkalive = await got(process.env.BANKAPIURL+'BankF/help')
    } catch(err){
      console.log(err)

    }
    let alive = false;
    try{
      if(checkalive.body){
        alive = true
      }
    }catch(err){
      console.log(err)
    }

    res.render('index', {
      user: req.session.user,
      admin: req.session.admin,
      alive: alive,
      marketplace: process.env.MARKETPLACE
    })
  }
});
app.get('/BankF', ensureAuthenticated, async function(req, res){
  let successes = [];
  if(req.session.sucess == true){
    successes.push({ msg: "Transfer successful"})
  }
  let admin
  try{
    admin = req.session.admin;
  }catch(err){
    console.log(err)
  }
  let balance = 0
  try{
    balance = await got(process.env.BANKAPIURL+'BankF/'+req.session.user+'/bal')
    balance = JSON.parse(balance.body)
  } catch(err){
    console.log(err)
  }
  let logsent
  let logrec
  console.log('start '+Date.now())
  try{
    logsent = await got.post(process.env.BANKAPIURL+'BankF/'+req.session.user+'/log',{
      json:{
        attempt: req.session.password
      },
      responseType:'json'
    })
  } catch(e) {
      console.log(e)
  }
  try{
    logrec = await got.post(process.env.BANKAPIURL+'BankF/'+req.session.user+'/log',{
      json:{
        attempt: req.session.password
      },
      responseType:'json'
    })
  } catch(e) {
      console.log(e)
  }
  console.log(logrec.timings)
  console.log("query finished "+Date.now())
  logsent = logsent.body.value
  if(logsent == 1 || logsent == -1 || logsent == null){
    logsent = undefined
  }else{
    logsent = logsent.filter(({ from }) => from === req.session.user)
  }
  logrec = logrec.body.value
  if(logrec == 1 || logrec == -1 || logrec == null){
    logrec = undefined
  } else{
    logrec = logrec.filter(({ to }) => to === req.session.user)
  }
  for( i in logrec){
    logrec[i].time = Date(logrec[i].time)
  }
  for( i in logsent){
    logsent[i].time = Date(logsent[i].time)
  }
  console.log("begin render " + Date.now())
  res.render('bankf',{
    logrec:logrec,
    logsent:logsent,
    user: req.session.user,
    balance: balance.value,
    user: req.session.user,
    admin: req.session.admin,
    sucesses: successes,
    marketplace: process.env.MARKETPLACE
  })
});


app.post('/sendfunds', async function(req, res){
  let balance = 0;
  try{
    balance = await got(process.env.BANKAPIURL+'BankF/'+req.session.user+'/bal')
    balance = JSON.parse(balance.body)
  } catch(err){
    console.log(err)
  }
  let {amount, name, senderpass} = req.body
  let a_name = req.session.user
  let successes = [];
  let errors = [];
  let result = {}
  result = await got.post(process.env.BANKAPIURL+'BankF/sendfunds',{
    json:{
      a_name: a_name,
      b_name: name,
      amount: parseInt(amount),
      attempt: senderpass
    },
    responseType:'json'
  })
  if(result.body.value == true || result.body.value){
    req.session.success = true;
    //post details
    res.redirect('/BankF')
  } else {
    errors.push({msg: "Transfer Unsuccessful"})

    let logsent
    let logrec

    try{
      logsent = await got.post(process.env.BANKAPIURL+'BankF/'+req.session.user+'/log',{
        json:{
          attempt: req.session.password
        },
        responseType:'json'
      })
    } catch(e) {
        console.log(e)
    }
    try{
      logrec = await got.post(process.env.BANKAPIURL+'BankF/'+req.session.user+'/log',{
        json:{
          attempt: req.session.password
        },
        responseType:'json'
      })
    } catch(e) {
        console.log(e)
    }

    logsent = logsent.body.value
    console.log(logsent)
    if(logsent == 1|| logrec == -1 || logrec == null){
      logsent = undefined
    }else{
      logsent = await logsent.filter(({ from }) => from === req.session.user)
    }
    logrec = logrec.body.value
    if(logrec == 1 || logrec == -1 || logrec == null){
      logrec = undefined
    } else{
      logrec = await logrec.filter(({ to }) => to === req.session.user)
    }
    for( i in logrec){
      let d = new Date(logrec[i].time)
      logrec[i].time = d
    }
    for( i in logsent){
      let d = new Date(logsent[i].time)
      logsent[i].time = d
    }

    res.render("bankf",{

      logsent:logsent,
      logrec:logrec,
      errors:errors,
      successes: successes,
      balance:balance.value,
      user: req.session.user,
      admin: req.session.admin,
      marketplace: process.env.MARKETPLACE
    })
  }
})

app.post('/register', async function(req, res){
  var {name, password, password2} = req.body;
  let checkuser = await got(process.env.BANKAPIURL+'BankF/contains/'+name)
  checkuser = JSON.parse(checkuser.body).value
  let errors = [];
  let successes = [];
  if(checkuser == false){
    if(!name || !password || !password2) {
        errors.push({msg : "please fill in all fields"});
    }
    if(password !== password2) {
        errors.push({msg : "Passwords don't match"});
    }
    if(password.length < 6 ) {
        errors.push({msg : 'Password must be at least 6 characters'})
    }
    if(errors[0]){
      res.render('register', {
        errors:errors,
        marketplace: process.env.MARKETPLACE
      })
    } else {
      if(postUser(name, password)){
        successes.push({msg:"User Registered Please Log In"})
        res.render('login',{
          errors:errors,
          successes: successes,
          marketplace: process.env.MARKETPLACE
        })
      }
    }
  } else {
    errors.push({msg: "User already exists"})
    res.render('register',{
      errors:errors,
      marketplace: process.env.MARKETPLACE
    })
  }
})

app.post('/login', async function(req, res){
  if(req.session.user){
    res.redirect("/")
  }
  let {name,password} = req.body
  let adminTest;
  let errors = [];
  try{
    adminTest = await got.post(process.env.BANKAPIURL+'BankF/admin/vpass',{
      json:{
        attempt: password,
      },
      responseType:'json'
    })
  } catch(err){
    console.log(err)
  }
  if(adminTest.body.value == undefined){
    res.redirect('/')
  }else{
    req.session.admin = adminTest.body.value
    req.session.adminp = password
    let verified
    try{
      verified = await got.post(process.env.BANKAPIURL+'BankF/vpass', {
        json:{
          name: name,
          attempt: password
        },
        responseType:'json'

      })


    } catch(err){
      console.log(err)
    } finally {
      console.log(verified.body.value)
      if(verified.body.value == 0){
        errors.push({msg: 'Password wrong'})
        res.render('login',{
          errors:errors,
          marketplace: process.env.MARKETPLACE
        })
      }else if(verified.body.value == 1){
        req.session.user = name;
        req.session.password = password
        res.redirect('/BankF')
      } else {
        errors.push({msg: 'User not found'})
        res.render('login',{
          errors:errors,
          marketplace: process.env.MARKETPLACE
        })
      }
    }

  }


  //res.redirect('/login')
})


let admin = require('./routes/admin');
app.use('/admin', admin);

let settings = require('./routes/settings');
app.use('/settings', settings)

let marketplace = require('./routes/marketplace')
app.use('/marketplace', marketplace)


app.get('/logout', function(req, res){
  req.session.regenerate(function(err) {
    res.render('login', {
      marketplace: process.env.MARKETPLACE
    })
  })
});


app.get('/login', function(req, res){
  req.session.regenerate(function(err) {
    res.render('login', {
      user: req.session.user,
      marketplace: process.env.MARKETPLACE
    })
  })
});

app.get('/register', function(req, res){
  res.render('register', {
    user: req.session.user,
    admin: req.session.admin,
    marketplace: process.env.MARKETPLACE
  })

});



app.listen(process.env.PORT || 3000, function(){
  console.log('Server started on port 3000...');
});