name: CI

on:
  pull_request:
    types: [opened, synchronize]
  workflow_dispatch:

jobs:
  quality:
    runs-on: docker
    timeout-minutes: 10
    steps:
      - uses: actions/checkout@v4
      - name: Set up environment
        env:
          REPO_TOKEN: ${{ secrets.REPO_TOKEN }}
        run: make setup-quality
      - name: Lint all
        run: |
          . .venv/bin/activate
          export PATH="$HOME/.local/bin:$PATH"
          make lint-all
      - name: Unit tests with 100% coverage
        run: |
          . .venv/bin/activate
          make pytest-cov
      - name: Check unit test speed
        env:
          PYTHONPATH: src
        run: |
          . .venv/bin/activate
          python3 -m devx.tools.check_test_speed --max-seconds 4 --max-single-seconds 0.5
      - name: Dependency security scan
        run: |
          . .venv/bin/activate
          # Install pip in venv if missing (needed by pip-audit)
          .venv/bin/python -m ensurepip 2>/dev/null || true
          PIPAPI_PYTHON_LOCATION=$PWD/.venv/bin/python \
            pip-audit --desc --skip-editable 2>&1 || true
      - name: Workflow dry-run validation
        run: |
          . .venv/bin/activate
          export PATH="$HOME/.local/bin:$PATH"
          # Best-effort: only runs if act_runner is installed
          if command -v act_runner >/dev/null 2>&1; then
            make workflow-dryrun
          else
            echo "act_runner not found — skipping workflow dry-run (static lint still passed)"
          fi

  release-dry-run:
    needs: [quality, detect-changes]
    if: needs.detect-changes.outputs.user-facing-changed == 'true'
    runs-on: docker
    timeout-minutes: 10
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - name: Set up environment
        env:
          REPO_TOKEN: ${{ secrets.REPO_TOKEN }}
        run: make setup-release
      - name: Release dry-run validation
        env:
          PYTHONPATH: src
          DEVX_VERSION_FILE: src/gitea_runner_manager/__init__.py
          DEVX_TASK_PREFIX: GRM
        run: |
          . .venv/bin/activate
          export PATH="$HOME/.local/bin:$PATH"
          python3 -m devx.ci.release --dry-run || true

  detect-changes:
    runs-on: docker
    timeout-minutes: 10
    outputs:
      ansible-changed: ${{ steps.detect.outputs.ansible-changed }}
      user-facing-changed: ${{ steps.detect.outputs.user-facing-changed }}
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - name: Set up environment
        env:
          REPO_TOKEN: ${{ secrets.REPO_TOKEN }}
        run: make setup-ci
      - name: Detect changed paths
        id: detect
        env:
          PYTHONPATH: src
          DEVX_TASK_PREFIX: GRM
        run: |
          . .venv/bin/activate
          python3 -m devx.ci.classify_changes \
            --base "origin/master" \
            --head "${{ github.event.pull_request.head.sha || github.sha }}" \
            --github-output

  discover-runners:
    needs: [detect-changes]
    if: needs.detect-changes.outputs.ansible-changed == 'true'
    runs-on: docker
    timeout-minutes: 10
    outputs:
      runner-count: ${{ steps.discover.outputs.runner-count }}
      runner-indices: ${{ steps.discover.outputs.runner-indices }}
    steps:
      - uses: actions/checkout@v4
      - name: Set up environment
        env:
          REPO_TOKEN: ${{ secrets.REPO_TOKEN }}
        run: make setup-ci
      - name: Discover available runners
        id: discover
        env:
          REPO_TOKEN: ${{ secrets.REPO_TOKEN }}
          MOLECULE_RUNNERS: ${{ vars.MOLECULE_RUNNERS }}
          PYTHONPATH: src
        run: |
          . .venv/bin/activate
          python3 -m devx.molecule.discover_runners \
            --owner "${{ github.repository_owner }}" \
            --repo "${{ github.event.repository.name }}" \
            --github-output

  molecule-tests:
    needs: [quality, detect-changes, discover-runners]
    if: needs.detect-changes.outputs.ansible-changed == 'true'
    runs-on: docker
    timeout-minutes: 10
    strategy:
      matrix:
        runner-index: [1, 2, 3]
    steps:
      - uses: actions/checkout@v4
      - name: Set up environment
        env:
          REPO_TOKEN: ${{ secrets.REPO_TOKEN }}
        run: make setup-molecule
      - name: Discover assigned test pairs
        env:
          RUNNER_INDEX: ${{ matrix.runner-index }}
          MAX_RUNNERS: ${{ needs.discover-runners.outputs.runner-count }}
          PYTHONPATH: src
        run: |
          . .venv/bin/activate
          python3 -m devx.molecule.distribute_molecule \
            --runner-index "$RUNNER_INDEX" \
            --max-runners "$MAX_RUNNERS" \
            --github-env --skip-if-excess
      - name: Run molecule tests
        if: env.SKIP != 'true'
        run: |
          . .venv/bin/activate
          if [ -z "$TEST_PAIRS" ]; then exit 0; fi
          # shellcheck disable=SC2086 # intentional word splitting for argument expansion
          python3 -m devx.molecule.molecule_ci_guard $TEST_PAIRS
        env:
          GITEA_URL: ${{ github.server_url }}
          REPO_TOKEN: ${{ secrets.REPO_TOKEN }}
          RUN_ID: ${{ github.run_id }}
          JOB_NAME: ${{ github.job }}
          MATRIX_INDEX: ${{ matrix.runner-index }}
          GITEA_REPOSITORY: ${{ github.repository }}
          PYTHONPATH: src

  pr-review:
    if: github.event_name == 'pull_request'
    runs-on: docker
    timeout-minutes: 10
    steps:
      - uses: actions/checkout@v4
      - name: Install dependencies
        run: |
          . .env 2>/dev/null || true
          python3 -m pip install --break-system-packages --target=src "devx==0.10.2" --extra-index-url "https://emil:${{ secrets.REPO_TOKEN }}@git.oblachno.oblachno.fyi/api/packages/oblachno-oss/pypi/simple/"
          python3 -m pip install --break-system-packages --target=src "devx==0.10.2" --extra-index-url "https://emil:${{ secrets.REPO_TOKEN }}@git.oblachno.oblachno.fyi/api/packages/oblachno-oss/pypi/simple/"
          python3 -m pip install --break-system-packages --target=src "devx==0.10.2" --extra-index-url "https://emil:${{ secrets.REPO_TOKEN }}@git.oblachno.oblachno.fyi/api/packages/oblachno-oss/pypi/simple/"
      - name: Run automated PR review
        env:
          REPO_TOKEN: ${{ secrets.REPO_TOKEN }}
          PYTHONPATH: src
        run: |
          set -euo pipefail
          python3 -m devx.ci.pr_review \
            "${{ github.event.number }}" \
            "${{ github.repository }}"

  auto-merge:
    # Auto-merge runs after all CI checks pass. It reads the task ID
    # from the branch name (falling back to .taskid file), validates
    # the PR title, and squash-merges.
    # Uses always() so it evaluates even when molecule-tests is skipped
    # (Gitea Actions skips dependent jobs of skipped jobs by default).
    needs: [quality, detect-changes, pr-review, molecule-tests]
    if: >-
      always() &&
      github.event_name == 'pull_request' &&
      needs.quality.result == 'success' &&
      needs.pr-review.result == 'success' &&
      (needs.molecule-tests.result == 'success' || needs.molecule-tests.result == 'skipped')
    runs-on: docker
    timeout-minutes: 10
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
          token: ${{ secrets.REPO_TOKEN }}
      - name: Install dependencies
        run: |
          . .env 2>/dev/null || true
          python3 -m pip install --break-system-packages --target=src "devx==0.10.2" --extra-index-url "https://emil:${{ secrets.REPO_TOKEN }}@git.oblachno.oblachno.fyi/api/packages/oblachno-oss/pypi/simple/"
          python3 -m pip install --break-system-packages --target=src "devx==0.10.2" --extra-index-url "https://emil:${{ secrets.REPO_TOKEN }}@git.oblachno.oblachno.fyi/api/packages/oblachno-oss/pypi/simple/"
          python3 -m pip install --break-system-packages --target=src "devx==0.10.2" --extra-index-url "https://emil:${{ secrets.REPO_TOKEN }}@git.oblachno.oblachno.fyi/api/packages/oblachno-oss/pypi/simple/"
      - name: Squash merge with task ID
        env:
          REPO_TOKEN: ${{ secrets.REPO_TOKEN }}
          VIKUNJA_TOKEN: ${{ secrets.VIKUNJA_TOKEN }}
          PYTHONPATH: src
          DEVX_TASK_PREFIX: GRM
          DEVX_VIKUNJA_PROJECT_ID: 6
          HEAD_REF: ${{ github.head_ref }}
          PR_TITLE: ${{ github.event.pull_request.title }}
          REPOSITORY: ${{ github.repository }}
          PR_NUMBER: ${{ github.event.number }}
        run: |
          python3 -m devx.ci.auto_merge \
            "$HEAD_REF" \
            "$PR_TITLE" \
            "$REPOSITORY" \
            "$PR_NUMBER"