add_discussion_comment.yml

# ## Summary
#
# Add GitHub Discussion Comment from the given arguments.

# ## Usage
#
# name: Add GitHub Discussion Comment
#
# on:
#   schedule:
#     # 毎週水曜 13:00 JST に実行
#     - cron: "0 4 * * wed"
#
# jobs:
#   get_next_meeting_date:
#     uses: route06/actions/.github/workflows/calc_next_date.yml@v2
#     with:
#       interval: weekly
#       target_day: wednesday # NOTE: MTG開催曜日に合わせて変更してください
#
#   create_discussion:
#     needs: get_next_meeting_date
#     uses: route06/actions/.github/workflows/create_gh_discussion.yml@v2
#     with:
#       # NOTE: 作成するDiscussionのタイトルを指定
#       title: ${{ needs.get_next_meeting_date.outputs.next_date }} Meeting Title
#       # NOTE: category_slugについては補足参照
#       category_slug: ideas
#       # NOTE: 作成するDiscussionで使用するテンプレートファイルのパスを指定
#       description_template_path: _templates/weekly_meeting_discussion/test.md
#
#   # 作成した Discussion にコメントを追加する
#   add_comment:
#     needs: create_discussion
#     uses: route06/actions/.github/workflows/add_discussion_comment.yml@v2
#     permissions:
#       contents: read
#       discussions: write
#     with:
#       discussion_id: ${{ needs.create_discussion.outputs.discussion_id }}
#       comment_template_path: _templates/weekly_meeting_discussion/comment1.md
#
#   # 追加したコメントに返信する
#   reply_to_comment:
#     needs: add_comment
#     uses: route06/actions/.github/workflows/add_discussion_comment.yml@v2
#     permissions:
#       contents: read
#       discussions: write
#     with:
#       discussion_id: ${{ needs.add_comment.outputs.discussion_id }}
#       comment_template_path: _templates/weekly_meeting_discussion/comment2.md
#       reply_to_comment_id: ${{ needs.add_comment.outputs.comment_id }}

name: Add GitHub Discussion Comment

on:
  workflow_call:
    inputs:
      discussion_id:
        description: コメントするDiscussionIDを設定してください。
        required: true
        type: string
      comment_template_path:
        description: コメントの内容が書かれたテンプレートファイルのパスを設定してください。
        required: true
        type: string
      reply_to_comment_id:
        description: 返信先のCommentIDを設定してください。
        type: string
    outputs:
      discussion_id:
        description: コメントしたDiscussionIDを返します。
        value: ${{ jobs.add_comment.outputs.discussion_id }}
      comment_id:
        description: 追加したCommentIDを返します。
        value: ${{ jobs.add_comment.outputs.comment_id }}

jobs:
  add_comment:
    runs-on: ubuntu-latest
    timeout-minutes: 5
    steps:
      - uses: actions/checkout@v4
      - name: Add Comment
        id: add_comment
        env:
          DISCUSSION_ID: ${{ inputs.discussion_id }}
          COMMENT_TEMPLATE_PATH: ${{ inputs.comment_template_path }}
          REPLY_TO_COMMENT_ID: ${{ inputs.reply_to_comment_id }}
        uses: actions/github-script@v7
        with:
          script: |
            const fs = require("fs");
            const { DISCUSSION_ID, COMMENT_TEMPLATE_PATH, REPLY_TO_COMMENT_ID } = process.env;

            async function addDisussionComment(github, discussionId, body, replyToId) {
              const result = await github.graphql(`mutation($body:String!, $discussion_id:ID!, $reply_to_id:ID) {
                addDiscussionComment(input: {discussionId: $discussion_id, body: $body, replyToId: $reply_to_id}) {
                  comment {
                    id
                  }
                }
              }`, {
                discussion_id: discussionId,
                body: body,
                reply_to_id: replyToId === '' ? null : replyToId,
              });

              return result.addDiscussionComment.comment.id;
            }

            const comment = (() => {
              const DEFAULT_COMMENT = '<!-- Write comment here -->';
              try {
                const desc = fs.readFileSync(COMMENT_TEMPLATE_PATH, "utf8");
                return desc.trim() === '' ? DEFAULT_COMMENT : desc;
              } catch (error) {
                if (error.code === 'ENOENT') {
                  console.error("Error reading comment template file:", error);
                  return DEFAULT_COMMENT;
                }
                else {
                  throw error;
                }
              }
            })();

            const comment_id = await addDisussionComment(github, DISCUSSION_ID, comment, REPLY_TO_COMMENT_ID);

            core.setOutput("discussion_id", DISCUSSION_ID);
            core.setOutput("comment_id", comment_id);
    outputs:
      discussion_id: ${{ steps.add_comment.outputs.discussion_id }}
      comment_id: ${{ steps.add_comment.outputs.comment_id }}