name: Slack 배포 시작 알림
description: 배포 시작을 Slack으로 전송하는 스크립트
inputs:
  webhook-url:
    required: true
runs:
  using: composite
  steps:
    - shell: bash
      env:
        WEBHOOK_URL: ${{ inputs.webhook-url }}
        REPO: ${{ gitea.repository }}
        BRANCH: ${{ gitea.ref_name }}
        ACTOR: ${{ gitea.actor }}
        RUN_NUMBER: ${{ gitea.run_number  }}
        SHA: ${{ gitea.sha }}
        COMMIT_MSG: ${{ gitea.event.head_commit.message }}
      run: |
        set -eu
        SHORT_SHA="${SHA:0:7}"
        STATUS_URL="https://status.gitea.pitap.at/${REPO}/actions/runs/${RUN_NUMBER}"
      
        # 이벤트에서 못 받았으면 (수동 trigger 등) git에서 시도, 그것도 실패하면 fallback
        if [ -z "${COMMIT_MSG:-}" ]; then
          COMMIT_MSG="$(git log -1 --pretty=format:%s 2>/dev/null || echo '(no message)')"
        fi

        # 멀티라인 커밋 메시지면 첫 줄만
        COMMIT_MSG="$(printf '%s' "$COMMIT_MSG" | head -n1)"

        HEADER_TEXT="배포 시작 — ${REPO}"

        PAYLOAD=$(jq -n \
          --arg repo   "$REPO" \
          --arg branch "$BRANCH" \
          --arg msg    "$COMMIT_MSG" \
          --arg actor  "$ACTOR" \
          --arg sturl  "$STATUS_URL" \
          '{
            text: ($repo + " 배포 시작"),
            blocks: [
              {type:"section", text:{type:"mrkdwn",
                text: ("*" + $repo + "* 배포 시작")}},
              {type:"context", elements:[
                {type:"mrkdwn",
                text: ($branch + " · " + $msg + " · " + $actor + "  <" + $sturl + "|상태 보기 →>")}
              ]}
            ]
          }')

        echo "$PAYLOAD" | curl -sS --fail-with-body \
          -X POST \
          -H 'Content-Type: application/json; charset=utf-8' \
          --data @- \
          "$WEBHOOK_URL"