/* ----------------------------------------------------------------------------

 Question Server
 GitLab: <https://gitlab.com/MrFry/question-node-server>

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.

 ------------------------------------------------------------------------- */

module.exports = {
  GetDateString: GetDateString,
  Log: Log,
  GetColor: GetColor,
  LogReq: LogReq
}

const DELIM = C('green') + '|' + C()

const utils = require('../utils/utils.js')
const locLogFile = './stats/logs'
const logFile = '/nlogs/nlogs'
const allLogFile = '/nlogs/log'

const colors = [
  'green',
  'red',
  'yellow',
  'blue',
  'magenta',
  'cyan'
]

function GetDateString () {
  const m = new Date()
  const d = m.getFullYear() + '/' +
    ('0' + (m.getMonth() + 1)).slice(-2) + '/' +
    ('0' + m.getDate()).slice(-2) + ' ' +
    ('0' + m.getHours()).slice(-2) + ':' +
    ('0' + m.getMinutes()).slice(-2) + ':' +
    ('0' + m.getSeconds()).slice(-2)
  return GetRandomColor(m.getHours().toString()) + d + C()
}

function Log (s, c) {
  let dl = DELIM + C(c)
  let log = C(c) + GetDateString() + dl + s

  console.log(log)
  utils.AppendToFile(log, logFile)
}

function LogReq (req, toFile, sc) {
  try {
    let ip = req.headers['cf-connecting-ip'] || req.connection.remoteAddress

    let logEntry = GetRandomColor(ip) + ip + C()
    let dl = DELIM
    if (req.url.includes('lred')) {
      dl += C('red')
    }

    const hostname = req.hostname.replace('www.', '').split('.')[0]
    logEntry += dl + hostname + dl + req.headers['user-agent'] + dl + req.method + dl

    logEntry += GetRandomColor(req.url.split('?')[0]) + req.url

    if (sc !== undefined && sc === 404) { logEntry += dl + sc }

    logEntry += C()
    if (!toFile) {
      Log(logEntry)
    } else {
      let defLogs = GetDateString() + dl + logEntry

      utils.AppendToFile(defLogs, locLogFile)
      utils.AppendToFile(defLogs, allLogFile)
    }
  } catch (e) {
    console.log(e)
    Log('Error at logging lol', GetColor('redbg'), true)
  }
}

function GetRandomColor (ip) {
  if (!ip) {
    return 'red'
  }

  let res = ip.split('').reduce((res, x) => {
    return res + x.charCodeAt(0)
  }, 0)
  return C(colors[res % colors.length])
}

function GetColor (c) {
  return c
}

function C (c) {
  if (c !== undefined) { c = c.toLowerCase() }

  if (c === 'redbg') { return '\x1b[41m' }
  if (c === 'bluebg') { return '\x1b[44m' }
  if (c === 'green') { return '\x1b[32m' }
  if (c === 'red') { return '\x1b[31m' }
  if (c === 'yellow') { return '\x1b[33m' }
  if (c === 'blue') { return '\x1b[34m' }
  if (c === 'magenta') { return '\x1b[35m' }
  if (c === 'cyan') { return '\x1b[36m' }
  return '\x1b[0m'
}