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

  subtitle:
    description: "The subtitle of the notification."
    default: 'no subtitle provided'

  image_slug:
    description: "The slug of the image to be included in the notification."
    default: 'git'

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

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

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

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

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

  status:
    description: "The status of the event."
    default: 'UNKNOWN'

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: Determine status color
      id: status
      shell: bash
      run: |
        case "${{ inputs.status }}" in
          SUCCESS)
            STATUS_COLOR="006400/228b22"
            ADD='{"decoratedText": {"startIcon": {"materialIcon": {"name": "check_circle"}},"text": "<b style=\"color: green;\">SUCCESS</b>"}},'
            ;;
          FAILURE)
            STATUS_COLOR="8b0000/dc143c"
            ADD='{"decoratedText": {"startIcon": {"materialIcon": {"name": "stop_circle"}},"text": "<b style=\"color: red;\">FAILURE</b>"}},'
            ;;
          *)
            STATUS_COLOR="483d8b/6495ed"
            ADD=''
            ;;
        esac
        echo "color=${STATUS_COLOR}" >> "$GITHUB_OUTPUT"
        echo "status_add=${ADD}" >> "$GITHUB_OUTPUT"

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

        PAYLOAD=$(jq -n -r \
          --arg header "${{ inputs.title }}" \
          --arg subtitle "${{ inputs.subtitle }}" \
          --arg imgurl "https://cdn.simpleicons.org/${{ inputs.image_slug }}/${{ steps.status.outputs.color }}" \
          --arg title "${{ 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 "${{ inputs.event_url || github.repositoryUrl || github.server_url }}" \
          '{ "cardsV2": [ { "cardId": "notify-${{ github.run_id }}", "card": {
            "header": {
              "title": "\($header)",
              "subtitle": "\($subtitle)",
              "imageUrl": "\($imgurl)",
              "imageType": "SQUARE"
            },
            "sections": [
              {
                "header": "\($title)",
                "collapsible": false,
                "widgets": [
                  ${{ steps.status.outputs.status_add }}
                  {
                    "decoratedText": {
                      "startIcon": {
                        "knownIcon": "PERSON"
                      },
                      "text": "<b>\($author)</b>"
                    }
                  },
                  {
                    "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' \
          "${{ inputs.webhook_url }}" \
          -d "${PAYLOAD}"