grading.yml

name: Grading

on:
  push:
    branches:
      - 'user/**'

concurrency:
  group: scores-update
  cancel-in-progress: false

permissions:
  contents: write

jobs:
  grade:
    runs-on: self-hosted

    steps:
      - name: Checkout user branch
        uses: actions/checkout@v6
        with:
          ref: ${{ github.ref }}
          fetch-depth: 0

      - name: Configure git
        run: |
          git config user.name "github-actions[bot]"
          git config user.email "github-actions[bot]@users.noreply.github.com"

      - name: Prepare database
        run: |
          rm -rf ../database-worktree

          if git ls-remote --exit-code --heads origin database >/dev/null 2>&1; then
            git fetch origin database
            git worktree add --track -B database ../database-worktree origin/database
          else
            git worktree add -f ../database-worktree
            cd ../database-worktree

            git switch --orphan database
            git commit --allow-empty -m "chore(actions): initialize database branch"
            git push origin database
            cd -
          fi

      - name: Get changed files
        id: changed-files
        uses: tj-actions/changed-files@v47
        with:
          json: 'true'

      - name: Detect target weeks from changed files
        id: targets
        run: |
          if [ -f "../database-worktree/info.json" ]; then
            PKG_FROM_INFO=$(python3 .github/scripts/grading/read_package_from_info.py 2>/dev/null || true)
            if [ -n "${PKG_FROM_INFO}" ]; then
              PACKAGE="${PKG_FROM_INFO}"
            fi
          fi

          PACKAGE_PATH="${PACKAGE//./\/}"
          
          echo "Package: ${PACKAGE}, Package path: ${PACKAGE_PATH}"
          
          echo "Changed files: ${{ steps.changed-files.outputs.all_changed_files }}"

          WEEK_LIST=$(printf "%s\n" "${{ steps.changed-files.outputs.all_changed_files }}" | python3 .github/scripts/grading/extract_target_weeks.py "${PACKAGE}")

          if [ -n "${WEEK_LIST}" ]; then
            echo "has_target_weeks=true" >> "$GITHUB_OUTPUT"
            echo "target_weeks=${WEEK_LIST}" >> "$GITHUB_OUTPUT"
            echo "Target weeks: ${WEEK_LIST}"
          else
            echo "has_target_weeks=false" >> "$GITHUB_OUTPUT"
            echo "target_weeks=" >> "$GITHUB_OUTPUT"
            echo "No target week changes."
          fi

      - name: Set up Java 25
        if: steps.targets.outputs.has_target_weeks == 'true'
        uses: actions/setup-java@v5
        with:
          java-version: '25'
          distribution: 'temurin'

      - name: Setup Gradle
        if: steps.targets.outputs.has_target_weeks == 'true'
        uses: gradle/actions/setup-gradle@v6

      - name: Run tests
        id: run_tests
        if: steps.targets.outputs.has_target_weeks == 'true'
        run: |
          chmod +x ./gradlew

          IFS=',' read -ra WEEKS <<< "${{ steps.targets.outputs.target_weeks }}"
          TEST_ARGS=()
          for week in "${WEEKS[@]}"; do
            TEST_ARGS+=(--tests "*Week${week}Tests")
          done

          ./gradlew cleanTest test --continue "${TEST_ARGS[@]}"
        continue-on-error: true

      - name: Extract metadata
        id: meta
        if: steps.targets.outputs.has_target_weeks == 'true'
        run: |
          BRANCH="${{ github.ref_name }}"
          NICKNAME="${BRANCH#user/}"
          echo "nickname=${NICKNAME}" >> "$GITHUB_OUTPUT"

          COMMIT_TS="${{ github.event.head_commit.timestamp }}"
          COMMIT_EPOCH_MS=$(date -d "${COMMIT_TS}" +%s%3N)
          echo "commit_epoch_ms=${COMMIT_EPOCH_MS}" >> "$GITHUB_OUTPUT"

      - name: Update database
        if: steps.targets.outputs.has_target_weeks == 'true'
        run: |
          python3 .github/scripts/grading/update_result.py "${{ steps.meta.outputs.nickname }}" "${{ steps.meta.outputs.commit_epoch_ms }}" "${{ steps.targets.outputs.target_weeks }}"
          
          cd ../database-worktree

          git add ".study" ".docs"

          if git diff --cached --quiet; then
            echo "No changes to database branch."
            exit 0
          fi

          git commit -m "docs(actions): update results ${NICKNAME}"

          MAX_RETRY=3
          for i in $(seq 1 $MAX_RETRY); do
            if git push origin HEAD:database; then
              echo "Push succeeded on attempt ${i}."
              exit 0
            fi
            echo "Push failed (attempt ${i}/${MAX_RETRY}). Pulling with rebase..."
            if ! git pull --rebase origin database; then
              echo "Rebase conflict detected. Aborting."
              git rebase --abort || true
              exit 1
            fi
          done

          echo "All ${MAX_RETRY} push attempts failed."
          exit 1

      - name: Fail workflow if tests failed
        if: steps.targets.outputs.has_target_weeks == 'true' && steps.run_tests.outcome == 'failure'
        run: |
          exit 1