name: Release Notification

on:
  release:
    types: [published]

  workflow_dispatch:
    inputs:
      tag_name:
        required: true
        type: string
        description: The release tag to generate a notification for

env:
  TAG: ${{ github.event.release.tag_name || github.event.inputs.tag_name }}

jobs:
  notify:
    name: Discord Notification
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2

      - uses: octokit/request-action@v2.x
        id: release
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          route: GET /repos/{org_repo}/releases/tags/{tag}
          org_repo: ${{ github.repository }}
          tag: ${{ env.TAG }}

      - uses: actions/setup-python@v2
        with:
          python-version: '3.x'

      - run: pip install discord-webhook

      # Write changelog to a file to avoid certain characters from being processed by the shell
      - run: |
          cat >changelog.txt <<"EOL"
          ${{ fromJSON(steps.release.outputs.data).body }}
          EOL

      - run: |
          python ci/notify/discord_notify.py \
            '${{ env.TAG }}' \
            '${{ secrets.DISCORD_WEBHOOK }}' \
            changelog.txt