#!/usr/bin/env -S node --import ./run
import { execSync } from 'node:child_process'
import { closeSync, mkdtempSync, openSync, rmSync } from 'node:fs'
import { tmpdir } from 'node:os'
import { join } from 'node:path'
import { program } from 'commander'
import * as core from '@actions/core'
import { getOctokit } from '@actions/github'

async function run(action, owner, repo, pull_number, dry = true) {
  const token = execSync('gh auth token', { encoding: 'utf-8' }).trim()

  const github = getOctokit(token)

  const payload = !pull_number ? {} : {
    pull_request: (await github.rest.pulls.get({
      owner,
      repo,
      pull_number,
    })).data
  }

  process.env['INPUT_GITHUB-TOKEN'] = token

  closeSync(openSync('step-summary.md', 'w'))
  process.env.GITHUB_STEP_SUMMARY = 'step-summary.md'

  await action({
    github,
    context: {
      payload,
      repo: {
        owner,
        repo,
      },
    },
    core,
    dry,
  })
}

program
  .command('commits')
  .description('Check commit structure of a pull request.')
  .argument('<owner>', 'Owner of the GitHub repository to check (Example: NixOS)')
  .argument('<repo>', 'Name of the GitHub repository to check (Example: nixpkgs)')
  .argument('<pr>', 'Number of the Pull Request to check')
  .action(async (owner, repo, pr) => {
    const commits = (await import('./commits.js')).default
    run(commits, owner, repo, pr)
  })

program
  .command('labels')
  .description('Manage labels on pull requests.')
  .argument('<owner>', 'Owner of the GitHub repository to label (Example: NixOS)')
  .argument('<repo>', 'Name of the GitHub repository to label (Example: nixpkgs)')
  .argument('[pr]', 'Number of the Pull Request to label')
  .option('--no-dry', 'Make actual modifications')
  .action(async (owner, repo, pr, options) => {
    const labels = (await import('./labels.js')).default
    const tmp = mkdtempSync(join(tmpdir(), 'github-script-'))
    try {
      process.env.GITHUB_WORKSPACE = tmp
      process.chdir(tmp)
      run(labels, owner, repo, pr, options.dry)
    } finally {
      rmSync(tmp, { recursive: true })
    }
  })

await program.parse()