name: Matrix Notification

on:
  issues:
    types: [opened]
  pull_request_target:
    types: [opened]

jobs:
  notify:
    if: ${{ (github.event_name == 'issues' && github.event.issue.user.login != 'krille-chan') || (github.event_name == 'pull_request_target' && github.event.pull_request.user.login != 'krille-chan') }}
    runs-on: ubuntu-latest
    steps:
      - name: Send notification to Matrix room
        env:
          HOMESERVER: ${{ secrets.MATRIX_HOMESERVER }}
          ACCESS_TOKEN: ${{ secrets.MATRIX_ACCESS_TOKEN }}
          ROOM_ID: ${{ secrets.MATRIX_ROOM_ID }}
          EVENT_NAME: ${{ github.event_name }}
          ISSUE_TITLE: ${{ github.event.issue.title }}
          ISSUE_URL: ${{ github.event.issue.html_url }}
          ISSUE_LABELS: ${{ join(github.event.issue.labels.*.name, ', ') }}
          ISSUE_AUTHOR: ${{ github.event.issue.user.login }}
          PR_TITLE: ${{ github.event.pull_request.title }}
          PR_URL: ${{ github.event.pull_request.html_url }}
          PR_LABELS: ${{ join(github.event.pull_request.labels.*.name, ', ') }}
          PR_AUTHOR: ${{ github.event.pull_request.user.login }}
        run: |
          if [ "${EVENT_NAME}" = "issues" ]; then
            EMOJI="📝"
            PREFIX="New Issue"
            TITLE="${ISSUE_TITLE}"
            URL="${ISSUE_URL}"
            LABELS="${ISSUE_LABELS}"
            AUTHOR="${ISSUE_AUTHOR}"
          else
            EMOJI="🔀"
            PREFIX="New Pull Request"
            TITLE="${PR_TITLE}"
            URL="${PR_URL}"
            LABELS="${PR_LABELS}"
            AUTHOR="${PR_AUTHOR}"
          fi

          AUTHOR_URL="https://github.com/${AUTHOR}"
          PLAIN="${EMOJI} ${PREFIX} by ${AUTHOR}: ${TITLE} - ${URL}"
          HTML="<h3>${EMOJI} ${PREFIX}</h3>"
          HTML="${HTML}<b><a href='${URL}'>${TITLE}</a></b><br/>"
          HTML="${HTML}👤 <a href='${AUTHOR_URL}'>${AUTHOR}</a>"
          if [ -n "${LABELS}" ]; then
            HTML="${HTML}<br/>🏷️ ${LABELS}"
          fi
          TXN_ID=$(date +%s%N)

          curl -s -o /dev/null -w "%{http_code}" -X PUT \
            "${HOMESERVER}/_matrix/client/v3/rooms/${ROOM_ID}/send/m.room.message/${TXN_ID}" \
            -H "Authorization: Bearer ${ACCESS_TOKEN}" \
            -H "Content-Type: application/json" \
            -d "$(jq -n --arg body "$PLAIN" --arg html "$HTML" \
              '{"msgtype":"m.notice","body":$body,"format":"org.matrix.custom.html","formatted_body":$html}')"