import * as core from '@actions/core'
import * as io from '@actions/io'
import {Method, parseMethod} from '../types/method'
import * as path from 'path'
import {runAzCliCommand, runAzKubeconfigCommandBlocking} from './azCommands'

const RUNNER_TEMP: string = process.env['RUNNER_TEMP'] || ''
export const KUBECONFIG_LOCATION: string = path.join(
   RUNNER_TEMP,
   `arc_kubeconfig_${Date.now()}`
)

/**
 * Gets the kubeconfig based on provided method for an Arc Kubernetes cluster
 * @returns The kubeconfig wrapped in a Promise
 */
export async function getArcKubeconfig(): Promise<string> {
   const resourceGroupName = core.getInput('resource-group', {required: true})
   const clusterName = core.getInput('cluster-name', {required: true})
   const azPath = await io.which('az', true)

   const method: Method | undefined = parseMethod(
      core.getInput('method', {required: true})
   )

   await runAzCliCommand(azPath, ['extension', 'add', '-n', 'connectedk8s'])

   switch (method) {
      case Method.SERVICE_ACCOUNT:
         const saToken = core.getInput('token', {required: true})
         return await runAzKubeconfigCommandBlocking(
            azPath,
            [
               'connectedk8s',
               'proxy',
               '-n',
               clusterName,
               '-g',
               resourceGroupName,
               '--token',
               saToken,
               '-f',
               KUBECONFIG_LOCATION
            ],
            KUBECONFIG_LOCATION
         )
      case Method.SERVICE_PRINCIPAL:
         return await runAzKubeconfigCommandBlocking(
            azPath,
            [
               'connectedk8s',
               'proxy',
               '-n',
               clusterName,
               '-g',
               resourceGroupName,
               '-f',
               KUBECONFIG_LOCATION
            ],
            KUBECONFIG_LOCATION
         )
      case undefined:
         core.warning('Defaulting to kubeconfig method')
      case Method.KUBECONFIG:
      default:
         throw Error('Kubeconfig method not supported for Arc cluster')
   }
}