name: Send notification via Google Chat
description: "Sends a notification to a Google Chat room when a pull request is opened."

inputs:
  webhook_url:
    description: "The URL of the Google Chat webhook."
    required: true

  title:
    description: "The title of the notification."
    required: true
    default: 'no title provided'

  event_author:
    description: "The author of the event."
    required: true
    default: 'unknown'

  event_title:
    description: "The title of the event."
    required: true

  event_body:
    description: "The body of the event."
    required: true
    default: 'no body provided'

  event_number:
    description: "The number of the event."
    required: true
    default: 'no number provided'

  event_url:
    description: "The url of the event."
    required: true
    default: 'none'

runs:
  using: "composite"
  steps:
    - name: Install prerequisites
      shell: bash
      run: |
        echo "::group::apt install"
        set -e
        apt update
        apt install -y curl jq
        echo "::endgroup::"

    - name: Notify via Google Chat Webhook
      shell: bash
      env:
        WEBHOOK: ${{ inputs.webhook_url }}
      run: |
        set -e

        PAYLOAD=$(jq -n \
          --arg header_title "${{ inputs.title }}" \
          --arg repo "${{ github.repository || '' }}" \
          --arg title "${{ inputs.event_title || 'no event title given' }}" \
          --arg body "${{ inputs.event_body || 'no event body given' }}" \
          --arg author "${{ inputs.event_author || 'no event author given' }}" \
          --arg url "${{ inputs.event_url || 'no event url given' }}" \
          '{
            "header": {
              "title": "$header_title",
              "subtitle": "Repo: \($repo)",
              "imageUrl": "https://cdn.jsdelivr.net/gh/homarr-labs/dashboard-icons/png/git.png",
              "imageType": "SQUARE"
            },
            "sections": [
              {
                "header": $title,
                "collapsible": false,
                "widgets": [
                  {
                    "decoratedText": {
                      "icon": {
                        "knownIcon": "PERSON"
                      },
                      "text": "<b>Opened by:</b> \($author)"
                    }
                  },
                  {
                    "textParagraph": {
                      "text": $body,
                      "maxLines": 2
                    }
                  }
                ]
              },
              {
                "widgets": [
                  {
                    "buttonList": {
                      "buttons": [
                        {
                          "text": "View Source Event",
                          "type": "FILLED",
                          "onClick": {
                            "openLink": {
                              "url": $url
                            }
                          }
                        }
                      ]
                    }
                  }
                ]
              }
            ]
          }')

        curl \
          --fail-with-body \
          -X POST \
          -H 'Content-Type: application/json' \
          "${{ inputs.webhook_url }}&messageReplyOption=REPLY_MESSAGE_FALLBACK_TO_NEW_THREAD&threadKey=${{ github.repository }}/pr/${{ inputs.event_number }}" \
          -d "$(jq -n --argjson card "$PAYLOAD" '{ "cardsV2": [ { "cardId": "new-pr", "card": $card } ] }')"