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
  issue_comment:
    types: [created]

jobs:
  filter-packages:
    name: Check Changed Packages (Update Snapshot)
    runs-on: ubuntu-24.04
    if: github.event_name == 'issue_comment' && github.event.issue.pull_request && !contains(github.event.comment.user.name, 'bot') && contains(github.event.comment.body, '/update-snapshot')
    outputs:
      head_ref: ${{ fromJson(steps.pr-request.outputs.data).head.ref  }}
      eslint: ${{ false || steps.filter.outputs.eslint }}
      prettier: ${{ false || steps.filter.outputs.prettier }}
      stylelint: ${{ false || steps.filter.outputs.stylelint }}
    permissions:
      contents: read

    steps:
      - name: Get PR information
        id: pr-request
        uses: octokit/request-action@dad4362715b7fb2ddedf9772c8670824af564f0d # v2.4.0
        with:
          route: ${{ github.event.issue.pull_request.url }}
        env:
          GITHUB_TOKEN: ${{ github.token }}

      - name: Exit if invalid PR
        run: |
          if [ "${{ fromJson(steps.pr-request.outputs.data).base.ref }}" != 'main' ]; then
            echo "::error::PR base branch is not main."
            exit 1
          fi

          if [ "${{ fromJson(steps.pr-request.outputs.data).state }}" != 'open' ]; then
            echo "::error::PR is not open."
            exit 1
          fi

          if [ "${{ fromJson(steps.pr-request.outputs.data).draft }}" == 'true' ]; then
            echo "::error::Cannot update snapshot for draft PR."
            exit 1
          fi

      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        with:
          ref: ${{ fromJson(steps.pr-request.outputs.data).head.ref }}

      - name: Check changed packages (PR Comment)
        uses: dorny/paths-filter@de90cc6fb38fc0963ad72b210f1f284cd68cea36 # v3.0.2
        id: filter
        with:
          ref: ${{ fromJson(steps.pr-request.outputs.data).head.ref }}
          filters: |
            eslint:
              - 'packages/eslint-config/**'
            prettier:
              - 'packages/prettier-config/**'
            stylelint:
              - 'packages/stylelint-config/**'

  check-target-packages:
    name: Check target packages (Update Snapshot)
    if: always()
    needs: filter-packages
    runs-on: ubuntu-24.04
    outputs:
      eslint: ${{ steps.check.outputs.eslint }}
      prettier: ${{ steps.check.outputs.prettier }}
      stylelint: ${{ steps.check.outputs.stylelint }}
      head_ref: ${{ steps.set-head-ref.outputs.head_ref }}

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

      - name: Set head ref
        id: set-head-ref
        run: |
          if [ ${{ github.event_name }} == 'workflow_dispatch' ]; then
            echo "head_ref=${{ github.ref }}" >> $GITHUB_OUTPUT
          elif [ ${{ github.event_name }} == 'issue_comment'  ]; then
            echo "head_ref=${{ needs.filter-packages.outputs.head_ref }}" >> $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: always() && (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:
      - 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: Checkout Repo
        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
        with:
          ref: ${{ needs.check-target-packages.outputs.head_ref }}
          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'

          if [ ${{ github.event_name }} == 'workflow_dispatch' ]; then
            git switch -c "bot/update-snapshot-$(TZ=UTC-9 date +'%Y%m')-${SHA:0:7}"
          fi

      - 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: |
          set -eu
          git add .
          git commit -m "chore: update snapshot (github-actions)"
          git push origin HEAD

      - name: Create change summary markdown
        run: |
          set -eu
          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 (Issue Comment)
        if: github.event_name == 'issue_comment'
        run: |
          set -eu
          if [ ! -f CHANGES.md ]; then
            echo "::warning::comment body not found."
            exit 0
          fi

          gh pr comment ${{ github.event.issue.number }} --body-file CHANGES.md --edit-last \
            || gh pr comment ${{ github.event.issue.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: |
          set -eu
          if [ ! -f CHANGES.md ]; then
            echo "::warning::comment body not found."
            exit 0
          fi

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