server.coffee

# CONFIG
_          = require 'lodash'
fs         = require 'fs'
chalk      = require 'chalk'
express    = require 'express'
bodyParser = require 'body-parser'
config     = require('./lib/parseConfig')()


# CONFIG
app        = express()
_DB        = null
{name, port}     = config


# ROUTER
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }))
app.use(express.static(__dirname + '/public'))
app.get '/', (req, res) -> res.sendfile __dirname + '/public/index.html'
app.get '/api', (req, res) ->
  res.setHeader('Content-Type', 'text/json')
  res.send(JSON.stringify(config))

app.post '/update', (req, res) ->
  res.setHeader('Content-Type', 'text/plain')
  {index, item} = req.body
  updateDB index, item, (db) ->
    res.end(JSON.stringify(db))


# METHODS
updateDB = (key, obj, cb) ->
  _DB[key] = _.assign(_DB[key], obj)
  fs.writeFile __dirname + "/public/#{name}_db.json", JSON.stringify(_DB, null, '\t'), (err) =>
    throw err if err isnt null
    cb(_DB)

writeDB = (db, cb) ->
  fs.writeFile __dirname + "/public/#{name}_db.json", JSON.stringify(db, null, '\t'), (err) =>
    throw err if err isnt null
    _DB = db
    cb()

readDB = ->
  crawl_data = require __dirname + "/log/#{name}.json"
  fs.exists __dirname + "/public/#{name}_db.json", (exists) ->
    if exists
      db = require __dirname + "/public/#{name}_db.json"
      db = _.assign(crawl_data, db)
      writeDB db, startServer
    else
      writeDB crawl_data, startServer

startServer = ->
  server = app.listen port, ->
    console.log chalk.white.bgCyan "Server listening at http://localhost:#{port}"

module.exports = -> readDB()