import fs from 'node:fs'
import path from 'node:path'

/**
 * Function to clean up unwanted characters from the output data.
 * @param {string} data - The raw data to be cleaned.
 * @returns {string} - The cleaned data.
 */
export const cleanData = (data: string) => {
  return (
    data
      // 1️⃣ Xóa chuỗi "--More--" (Cisco/Unix pager)
      .replace(/--More--[\s\x08\x1b\[K]*/g, '')

      // 2️⃣ Xóa toàn bộ chuỗi ANSI escape sequences
      //    Ví dụ: ESC[2J, ESC[K, ESC[?25h, ESC[0m, ...
      .replace(/\x1B\[[0-9;?]*[A-Za-z]/g, '')

      // 3️⃣ Xóa ký tự Backspace (BS) hoặc Delete (DEL)
      .replace(/[\x08\x7F]/g, '')

      // 4️⃣ Xóa ký tự NUL và các control char khác (trừ \r, \n, \t)
      .replace(/[^\x09\x0A\x0D\x20-\x7E]/g, '')
  )

  // 5️⃣ Chuẩn hóa xuống dòng nếu cần
  // .replace(/\r\n/g, '\n')
}

export function sleep(ms: number) {
  return new Promise((resolve) => setTimeout(resolve, ms))
}

// 20250527-AUTO-Session.Station_1-13-192.168.171.9-2.log
// {DATE}-AUTO-Session.{Station name}-{Station ID}-{Station IP}-{Line number}.log
export function appendLog(
  output: string,
  stationId: number,
  stationName: string,
  stationIP: string,
  lineNumber: number
) {
  const date = new Date().toISOString().slice(0, 10).replace(/-/g, '') // YYYYMMDD
  const logDir = path.join('storage', 'system_logs')
  const logFile = path
    .join(logDir, `${date}-AUTO-Session.${stationName}-${stationId}-${stationIP}-${lineNumber}.log`)
    .replaceAll(' ', '_')

  // Ensure folder exists
  if (!fs.existsSync(logDir)) {
    fs.mkdirSync(logDir, { recursive: true })
  }

  fs.appendFile(logFile, output, (err) => {
    if (err) {
      console.error('❌ Failed to write log:', err.message)
    }
  })
}

export const getPathLog = (stationId: number, lineNumber: number, port: number) => {
  const date = new Date().toISOString().slice(0, 10).replace(/-/g, '') // YYYYMMDD
  const logDir = path.join('storage', 'system_logs')
  const logFile = path.join(logDir, `${date}-Station_${stationId}-Line_${lineNumber}_${port}.log`)
  // Ensure folder exists
  if (!fs.existsSync(logDir)) {
    fs.mkdirSync(logDir, { recursive: true })
    return null
  } else return logFile
}

/**
 * Utility function get scope log with timestamp.
 * @param {string} text - content log.
 * @param {number} time - Timestamp.
 */
export const getLogWithTimeScenario = (text: string, time: number) => {
  try {
    // Match all start and end blocks
    const regex = /---(start|end)-scenarios---(\d+)---/g

    let match
    const blocks = []

    while ((match = regex.exec(text)) !== null) {
      blocks.push({
        type: match[1],
        timestamp: match[2],
        index: match.index,
      })
    }

    // Find the matching block for the end timestamp
    let result = null
    for (let i = 0; i < blocks.length; i++) {
      const block = blocks[i]
      if (block.type === 'end' && block.timestamp === time.toString()) {
        // Find nearest preceding "start"
        for (let j = i - 1; j >= 0; j--) {
          if (blocks[j].type === 'start') {
            const startIndex = blocks[j].index
            const endIndex = block.index + text.slice(block.index).indexOf('\n') // or manually offset length of the line
            result = text.slice(startIndex, endIndex).trim()
            break
          }
        }
        break
      }
    }
    return result
  } catch (err) {
    console.error('Error get log:', err)
    return ''
  }
}

export function isValidJson(string: string) {
  try {
    JSON.parse(string)
    return true // Chuỗi là định dạng JSON hợp lệ
  } catch (e) {
    return false // Chuỗi không phải là định dạng JSON hợp lệ
  }
}