update-snapshot.yml

name: Update Snapshot

on:
  workflow_dispatch:
    inputs:
      eslint:
        description: "Update ESLint Config Snapshot"
        required: true
        default: false
        type: boolean
      prettier:
        description: "Update Prettier Config Snapshot"
        required: true
        default: false
        type: boolean
      stylelint:
        description: "Update Stylelint Config Snapshot"
        required: true
        default: false
        type: boolean
  pull_request:
    types: [labeled]
    branches:
      - "main"
    paths:
      - "packages/**"
      - "package.json"
      - ".github/workflows/update-snapshot.yml"

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

defaults:
  run:
    shell: bash

jobs:
  check-target-packages:
    name: Check Target Packages (Update Snapshot)
    runs-on: ubuntu-24.04
    if: github.event_name == 'workflow_dispatch' || (github.event_name == 'pull_request' && !contains(github.event.pull_request.user.name, 'bot')  && github.event.label.name == 'update-snapshot')
    outputs:
      eslint: ${{ steps.target-packages.outputs.eslint }}
      prettier: ${{ steps.target-packages.outputs.prettier }}
      stylelint: ${{ steps.target-packages.outputs.stylelint }}

    steps:
      - name: Fail if triggered from invalid PR (Pull Request)
        if: github.event_name == 'pull_request'
        run: |
          if [ "${{ github.event.pull_request.state }}" != 'open' ]; then
            echo "::error::PR is not open."
            exit 1
          fi

          if [ "${{ github.event.pull_request.draft }}" == 'true' ]; then
            echo "::error::Cannot update snapshot for draft PR."
            exit 1
          fi

      - name: Fail if triggered from invalid Tag (Workflow Dispatch)
        if: github.event_name == 'workflow_dispatch'
        run: |
          if [ ${{ contains(github.ref, 'refs/tags') }} == 'true' ]; then
            echo "::error::Cannot update snapshot for tag."
            exit 1
          fi

      - name: Check target packages (PR Comment)
        if: github.event_name == 'pull_request'
        uses: dorny/paths-filter@de90cc6fb38fc0963ad72b210f1f284cd68cea36 # v3.0.2
        id: pr-target
        with:
          filters: |
            eslint:
              - 'packages/eslint-config/**'
            prettier:
              - 'packages/prettier-config/**'
            stylelint:
              - 'packages/stylelint-config/**'

      - name: Export target packages for output
        id: target-packages
        run: |
          if [ ${{ github.event_name }} == 'pull_request' ]; then
            echo "eslint=${{ steps.pr-target.outputs.eslint }}" >> $GITHUB_OUTPUT
            echo "prettier=${{ steps.pr-target.outputs.prettier }}" >> $GITHUB_OUTPUT
            echo "stylelint=${{ steps.pr-target.outputs.stylelint }}" >> $GITHUB_OUTPUT
          elif [ ${{ github.event_name }} == 'workflow_dispatch'  ]; then
            echo "eslint=${{ github.event.inputs.eslint }}" >> $GITHUB_OUTPUT
            echo "prettier=${{ github.event.inputs.prettier }}" >> $GITHUB_OUTPUT
            echo "stylelint=${{ github.event.inputs.stylelint }}" >> $GITHUB_OUTPUT
          else
            echo "::error::Workflow called by unexpected event."
            exit 1
          fi

  update-snapshot:
    name: Update Snapshot (Update Snapshot)
    needs: check-target-packages
    if: (needs.check-target-packages.outputs.eslint == 'true' || needs.check-target-packages.outputs.prettier == 'true' || needs.check-target-packages.outputs.stylelint == 'true')
    runs-on: ubuntu-24.04
    permissions:
      contents: write
      pull-requests: write
    timeout-minutes: 10

    steps:
      - name: Get GitHub Access Token from GitHub App
        uses: actions/create-github-app-token@5d869da34e18e7287c1daad50e0b8ea0f506ce69 # v1.11.0
        id: app-token
        with:
          app-id: ${{ vars.ACTIONS_MIKU_APP_ID }}
          private-key: ${{ secrets.ACTIONS_MIKU_PRIVATE_KEY }}

      - name: Get GitHub App User ID
        id: get-user-id
        run: echo "user-id=$(gh api "/users/${{ steps.app-token.outputs.app-slug }}[bot]" --jq .id)" >> "$GITHUB_OUTPUT"
        env:
          GH_TOKEN: ${{ steps.app-token.outputs.token }}

      - name: Configure Git Identity
        run: |
          git config --global user.name '${{ steps.app-token.outputs.app-slug }}[bot]'
          git config --global user.email '${{ steps.get-user-id.outputs.user-id }}+${{ steps.app-token.outputs.app-slug }}[bot]@users.noreply.github.com'

      - name: Checkout Repo (Pull Request)
        if: github.event_name == 'pull_request'
        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        with:
          ref: ${{ github.event.pull_request.head.ref }}
          token: ${{ steps.app-token.outputs.token }}

      - name: Checkout Repo (Workflow Dispatch)
        if: github.event_name == 'workflow_dispatch'
        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        with:
          ref: ${{ github.ref }}
          token: ${{ steps.app-token.outputs.token }}

      - name: Create Branch (Workflow Dispatch)
        if: github.event_name == 'workflow_dispatch'
        run: |
          git switch -c "bot/update-snapshot-$(TZ=UTC-9 date +'%Y%m%d')-${{ github.run_id }}-${{ github.run_attempt }}"

      - name: Setup Node.js and pnpm
        uses: ./.github/common/setup-node-pnpm

      - name: Update ESLint Config Snapshot
        if: needs.check-target-packages.outputs.eslint == 'true'
        run: pnpm run build:eslint && pnpm run test --project eslint-config -u

      - name: Update Prettier Config Snapshot
        if: needs.check-target-packages.outputs.prettier == 'true'
        run: pnpm run build:prettier && pnpm run test --project prettier-config -u

      - name: Update Stylelint Config Snapshot
        if: needs.check-target-packages.outputs.stylelint == 'true'
        run: pnpm run build:stylelint && pnpm run test --project stylelint-config -u

      - name: Commit and Push Changes
        run: |
          git add .
          git commit -m "chore: update snapshot (github-actions)"
          git push origin HEAD

      - name: Create change summary markdown
        run: |
          echo "## 🚚 Updated snapshots" >> CHANGES.md

          if [ ${{ needs.check-target-packages.outputs.eslint }} == 'true' ]; then
              echo "- ESLint" >> CHANGES.md
          fi
          if [ ${{ needs.check-target-packages.outputs.prettier }} == 'true' ]; then
              echo "- Prettier" >> CHANGES.md
          fi
          if [ ${{ needs.check-target-packages.outputs.stylelint }} == 'true' ]; then
              echo "- Stylelint" >> CHANGES.md
          fi

      - name: Comment to PR (Pull Request)
        if: github.event_name == 'pull_request'
        run: |
          if [ ! -f CHANGES.md ]; then
            echo "::warning::comment body not found."
            exit 0
          fi

          gh pr comment ${{ github.event.pull_request.number }} --body-file CHANGES.md --edit-last \
            || gh pr comment ${{ github.event.pull_request.number}} --body-file CHANGES.md
        env:
          GH_TOKEN: ${{ steps.app-token.outputs.token }}

      - name: Create Pull Request (Workflow Dispatch)
        if: github.event_name == 'workflow_dispatch'
        run: |
          if [ ! -f CHANGES.md ]; then
            echo "::warning::comment body not found."
            exit 0
          fi

          gh pr create --base ${{ github.ref }} --body-file CHANGES.md --title "update snapshot (github-actions)"
        env:
          GH_TOKEN: ${{ steps.app-token.outputs.token }}