import colors from 'colors'
import * as dotenv from 'dotenv'
import fs from 'fs'
import { IndexState } from '../types'
import { errorMessage, isBoolean } from './helpers'

dotenv.config()

export const CreateEnvFile = async (state: IndexState) => {
  console.info(colors.green('Creating Env File...'))
  const envFile = fs.readFileSync('./.env.example', 'utf8')
  const lines = envFile.split('\n')
  let fileContents = ''
  const prefix: string = state.args[1]
  lines.forEach((lineText) => {
    if ((lineText.split('')[0] !== '#') && (lineText !== '')) {
      const lineSpit = lineText.split('=')
      const key = lineSpit[0]

      if (!process.env[key]) {
        errorMessage(key)
        process.exit(1)
      }
      let value: string = process.env[key]!
      if (prefix) {
        value = `${process.env[`${prefix}_${key}`]}`
      }
      if (!isBoolean(value) && Number.isNaN(Number(value))) {
        fileContents += `${key}="${value}"\n`
      } else {
        fileContents += `${key}=${value}\n`
      }
    } else {
      // Ignore the line. It's a comment or blank line
    }
  })

  fs.writeFileSync('./.env', `${fileContents.trim()}\n`)
  console.info(colors.green('.env file complete.'))

  return fileContents
}

export default CreateEnvFile