action.yml

name: Accessibility alt text bot
description: "This action will check a repos issue, discussion, or PR for correct alt text usage."
branding:
  icon: "eye"
  color: "purple"
runs:
  using: "composite"
  steps:
    - name: Runs alt text check and adds comment
      run: |
        source ${{ github.action_path }}/queries.sh

        if [ ${{ github.event.comment }} ]; then
          content=$COMMENT
          user=${{ github.event.comment.user.login }}
          if ${{ github.event.issue.pull_request.url != '' }}; then
            type=pr_comment
            issue_url=${{ github.event.issue.html_url }}
          elif ${{ github.event.discussion.id != '' }}; then
            type=discussion_comment
            discussion_node_id='${{ github.event.discussion.node_id }}'
            comment_node_id='${{ github.event.comment.node_id }}'
            if ${{ github.event.comment.parent_id != '' }}; then
              reply_to_id=$(getDiscussionReplyToId $comment_node_id)
            else
              reply_to_id=$comment_node_id
            fi
          else
            type=issue_comment
            issue_url=${{ github.event.issue.html_url }}
          fi
          target=${{ github.event.comment.html_url }}
        else
          if [ ${{ github.event.issue }} ]; then
            type=issue_description
            content=$ISSUE_BODY
            issue_url=${{ github.event.issue.html_url }}
            user=${{ github.event.issue.user.login }}
            target=" your issue body"
          elif [ ${{ github.event.pull_request }} ]; then
            type=pr_description
            content=$PR_BODY
            issue_url=${{ github.event.pull_request.html_url }}
            user=${{ github.event.pull_request.user.login }}
            target=" your pull request body"
          elif [ ${{ github.event.discussion }} ]; then
            type=discussion_description
            content=$DISCUSSION_BODY
            discussion_node_id='${{ github.event.discussion.node_id }}'
            user=${{ github.event.discussion.user.login }}
            target=" your discussion body"
          fi
        fi
        flag=$(node ${{ github.action_path }}/src/index.js "$content") 
        message="Uh oh! @$user, the image you shared is missing helpful alt text. Check $target.

        Alt text is an invisible description that helps screen readers describe images to blind or low-vision users. If you are using markdown to display images, add your alt text inside the brackets of the markdown image.

        Learn more about alt text at [Basic writing and formatting syntax: images on GitHub Docs](https://docs.github.com/en/get-started/writing-on-github/getting-started-with-writing-and-formatting-on-github/basic-writing-and-formatting-syntax#images).

        > 🤖 Beep boop! This comment was added automatically by [github/accessibility-alt-text-bot](https://github.com/github/accessibility-alt-text-bot).
        "

        echo "Detected bad alt text: ${flag}"
        echo "Event type: $type"

        if [[ $flag = true ]]; then
          if [[ $type = pr_comment ]] || [[ $type = pr_description ]]; then
            gh pr comment $issue_url --body "$message"
          elif [[ $type = issue_comment ]] || [[ $type = issue_description ]]; then
            gh issue comment $issue_url --body "$message"
          elif [[ $type = discussion_description ]]; then
            addDiscussionComment $discussion_node_id "$message"
          elif [[ $type = discussion_comment ]]; then
            addDiscussionComment $discussion_node_id "$message" $reply_to_id 
          fi
        fi
      shell: bash
      env:
        GITHUB_TOKEN: ${{ github.token }}
        COMMENT: ${{ github.event.comment.body }}
        ISSUE_BODY: ${{ github.event.issue.body }}
        PR_BODY: ${{ github.event.pull_request.body }}
        DISCUSSION_BODY: ${{ github.event.discussion.body }}