const chokidar = require('chokidar');
const fs = require('fs');
const path = require('path');
var createError = require('http-errors');
var express = require('express');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var indexRouter = require('./routes/index');
var apiRouter = require('./routes/api');
var config = require("./config.json");

if (config.serverType === 0) { // Only run the image Importer when Aqua is active
  const watcher = chokidar.watch(config.aquaSrvDir, {
    persistent: true
  });

  watcher
    .on('add', (filePath) => {
      const isImage = /\.(jpe?g|png|gif)$/i.test(filePath);
      if (isImage) {
        const fileName = path.basename(filePath);
        const destPath = path.join(config.imageFolder, fileName);
        fs.access(destPath, (err) => {
          if (err) {
            fs.copyFile(filePath, destPath, (err) => {
              if (err) throw err;
              console.log(`${fileName} Imported.`);
            });
          } else {
          }
        });
      }
    })
    .on('error', (error) => {
      console.error(`Watcher error: ${error}`);
    });
} else if (config.ArtImageDirectory && config.ArtImageImport === true){
  const watcher = chokidar.watch(config.ArtImageDirectory, {
    persistent: true
  });

  watcher
    .on('add', (filePath) => {
      const isImage = /\.(jpe?g|png|gif)$/i.test(filePath);
      if (isImage) {
        const fileName = path.basename(filePath);
        const destPath = path.join(config.imageFolder, fileName);
        fs.access(destPath, (err) => {
          if (err) {
            fs.copyFile(filePath, destPath, (err) => {
              if (err) throw err;
              console.log(`${fileName} Imported.`);
            });
          } else {
          }
        });
      }
    })
    .on('error', (error) => {
      console.error(`Watcher error: ${error}`);
    });
} else {
  console.log("Image Export Disabled. Check readme.md for details.")
}

// readFileSync function must use __dirname get current directory
// require use ./ refer to current directory.

const options = {};
var app = express()

// Create HTTPs server.

//var httpsServer = https.createServer(options, app);

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
app.use(express.static(__dirname + '/public'));
app.use(logger('dev'));
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.json({ extended: false }));

// define routes
app.use('/', indexRouter);
app.use('/api/', apiRouter);

// catch 404 and forward to error handler
app.use(function (req, res, next) {
  next(createError(404));
});

var PORT = config.hostPort || 8000

// error handler
app.use(function (err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

app.listen(PORT, () => console.log(`Server is running in port ${PORT}, Server type ${config.serverType}`));

module.exports = app;