# libraries
bcrypt = (require 'bcrypt')
sqlite3 = (require 'sqlite3').verbose()

FFTCGDB = (filename) ->
  @filename = filename

  @db = new sqlite3.Database @filename, (err) ->
    if err
      console.error err.message

  @db.run """
    CREATE TABLE IF NOT EXISTS users (
      login text NOT NULL,
      nickname text,
      pwd text NOT NULL,
      socket text,
      UNIQUE(login)
    );
  """
  console.log 'Connected to', @filename
  return

FFTCGDB::close = ->
  @db.close (err) ->
    if err
      console.error err.message
    console.log 'Closed', @filename

FFTCGDB::register = (login, password) ->
  that = @
  # bruteforce countermeasure
  saltRounds = 13

  new Promise (resolve, reject) ->
    # validate username
    login = login.toLowerCase()
    # hash password
    bcrypt.hash password, saltRounds, (err, hash) ->
      reject 'bcrypt fail' if err
      # try creating row in users table
      that.db.run "INSERT INTO users (login, pwd) VALUES ('#{login}', '#{hash}');", (err, result) ->
        reject 'sqlite fail' if err
        # registration successful
        resolve login

FFTCGDB::login = (login, password) ->
  that = @

  new Promise (resolve, reject) ->


module.exports = FFTCGDB

# Handle termination
process.on 'SIGINT', ->
  console.log '[FFTCG-DB] shutting down'
  FFTCGDB.close()