import fs from 'fs'
import path from 'path'
import dotenv from 'dotenv'

export function isDevFn(mode: string): boolean {
  return mode === 'development'
}

export function isProdFn(mode: string): boolean {
  return mode === 'production'
}

/**
 * Whether to generate package preview
 */
export function isReportMode(): boolean {
  return process.env.VITE_REPORT === 'true'
}
// Read all environment variable configuration files to process.env
export function wrapperEnv(envConf: Record<string, any>): ViteEnv {
  const ret: any = {}
  for (const envName of Object.keys(envConf)) {
    let realName = envConf[envName].replace(/\\n/g, '\n')
    realName =
      realName === 'true' ? true : realName === 'false' ? false : realName

    if (envName === 'VITE_PORT') {
      realName = Number(realName)
    }
    if (envName === 'VITE_PROXY') {
      try {
        realName = JSON.parse(realName)
      } catch (error) {
        console.log(error)
      }
    }
    ret[envName] = realName
    process.env[envName] = realName
  }
  return ret
}

/**
 * Get the environment variables starting with the specified prefix
 * @param match prefix
 * @param confFiles ext
 */
export function getEnvConfig(
  match = 'VITE_GLOB_',
  confFiles = ['.env', '.env.production']
) {
  let envConfig = {}
  confFiles.forEach((item) => {
    try {
      const env = dotenv.parse(
        fs.readFileSync(path.resolve(process.cwd(), item))
      )
      envConfig = { ...envConfig, ...env }
    } catch (error) {
      console.error(`Error in parsing ${item}`, error)
    }
  })

  Object.keys(envConfig).forEach((key) => {
    const reg = new RegExp(`^(${match})`)
    if (!reg.test(key)) {
      Reflect.deleteProperty(envConfig, key)
    }
  })
  return envConfig
}

/**
 * Get user root directory
 * @param dir file path
 */
export function getRootPath(...dir: string[]) {
  return path.resolve(process.cwd(), ...dir)
}