import * as plugins from './qenv.plugins'
import { IKeyValueObject } from './qenv.classes.qenv'

export let getRequiredEnvVars = (pathArg: string, requiredEnvVarsArray: string[]) => {
  let qenvFilePath = plugins.path.join(pathArg, 'qenv.yml')
  let qenvFile = plugins.smartfile.fs.toObjectSync(qenvFilePath)
  for (let keyArg in qenvFile.vars) {
    requiredEnvVarsArray.push(qenvFile.vars[ keyArg ])
  }
}

export let getAvailableEnvVars = (
  requiredEnvVarsArg: string[],
  envYmlPathArg: string,
  availableEnvVarsArray: string[],
  keyValueObjectArrayArg: IKeyValueObject[]
) => {
  envYmlPathArg = plugins.path.join(envYmlPathArg, 'env.yml')
  let envYml
  try {
    envYml = plugins.smartfile.fs.toObjectSync(envYmlPathArg)
  } catch (err) {
    console.log("env file couldn't be found at " + envYmlPathArg)
    envYml = {}
  }
  for (let requiredEnvVar of requiredEnvVarsArg) {
    if (process.env[ requiredEnvVar ]) {
      availableEnvVarsArray.push(requiredEnvVar)
      keyValueObjectArrayArg.push({
        key: requiredEnvVar,
        value: process.env[ requiredEnvVar ]
      })
    } else if (envYml.hasOwnProperty(requiredEnvVar)) {
      process.env[ requiredEnvVar ] = envYml[ requiredEnvVar ]
      availableEnvVarsArray.push(requiredEnvVar)
      keyValueObjectArrayArg.push({
        key: requiredEnvVar,
        value: process.env[ requiredEnvVar ]
      })
    }
  }
}

export let getMissingEnvVars = (requiredEnvVarsArray: string[], availableEnvVarsArray: string[]) => {
  return plugins.lodash.difference(requiredEnvVarsArray, availableEnvVarsArray)
}