const cp = require('child_process')
const fetch = require('node-fetch')

const checks = require('./checks')

const [owner, repo] = process.env.GITHUB_REPOSITORY.split('/')

function getCurrentCommitSha () {
  return cp
    .execSync('git rev-parse HEAD')
    .toString()
    .trim()
}
// The SHA provied by GITHUB_SHA is the merge (PR) commit.
// We need to get the current commit sha ourself.
const sha = getCurrentCommitSha()

async function setStatus (context, state, description) {
  return fetch(`https://api.github.com/repos/${owner}/${repo}/statuses/${sha}`, {
    method: 'POST',
    body: JSON.stringify({
      state,
      description,
      context
    }),
    headers: {
      Authorization: `Bearer ${process.env.GITHUB_TOKEN}`,
      'Content-Type': 'application/json'
    }
  })
}

(async () => {
  console.log(`Starting status checks for commit ${sha}`)

  // Run in parallel
  await Promise.all(
    checks.map(async check => {
      const { name, callback } = check

      await setStatus(name, 'pending', 'Running check..')

      try {
        const response = await callback()
        await setStatus(name, 'success', response)
      } catch (err) {
        const message = err ? err.message : 'Something went wrong'
        await setStatus(name, 'failure', message)
      }
    })
  )

  console.log('Finished status checks')
})()