Post your latest commit to a Discord channel with a post-commit hook (Node.js)

post-commit.js

// Post your latest commit to a Discord channel
// Run this script from a post-commit hook, or run manually from the top level of your project

const path = require('path')
const https = require('https')
const crypto = require('crypto')
const child_process = require('child_process')

// Fill your webhook id & token below
// Project name is set to the current folder name

const config =
{
  webhook:
  {
    id: '',
    token: ''
  }
}

function post(url, object)
{
  const data = JSON.stringify(object)
  const options =
  {
    method: 'POST',
    headers:
    {
      'Content-Type': 'application/json',
      'Content-Length': data.length
    }
  }

  const req = https.request(url, options, (res) =>
  {
    res.on('data', (d) => { process.stdout.write(d) })
  })

  req.on('error', (error) => { console.error(error) })
  req.write(data)
  req.end()
}

function exec(command)
{
  return new Promise((resolve, reject) =>
  {
    child_process.exec(command, (error, stdout, stderr) =>
    {
      if (error)
        reject()
      else
        resolve(stdout.trim())
    })
  })
}

(async () =>
{
  const project_name = path.basename(path.resolve())

  // test a specific commit
  const hash = ''

  const commit = {}
  commit.author = {}
  commit.author.name   = await exec(`git log -1 --pretty=%an ${hash}`)
  commit.author.email  = await exec(`git log -1 --pretty=%ae ${hash}`)
  const email_hash     = crypto.createHash('md5').update(commit.author.email).digest('hex')
  commit.author.avatar = `https://gravatar.com/avatar/${email_hash}?size=128`
  commit.subject       = await exec(`git log -1 --pretty=%s ${hash}`)
  commit.body          = await exec(`git log -1 --pretty=%b ${hash}`)
  commit.author_date   = await exec(`git log -1 --pretty=%aI ${hash}`)

  const embed =
  {
    color: 0x0099ff,
    title: commit.subject,
    author:
    {
      name: commit.author.name,
      icon_url: commit.author.avatar
    },
    description: commit.body,
    timestamp: new Date(commit.author_date),
    footer:
    {
      text: project_name
    }
  }

  console.log(embed)

  const data = { embeds: [ embed ] }
  post(`https://discordapp.com/api/webhooks/${config.webhook.id}/${config.webhook.token}`, data)
})()