# CI for the apk-reverse skill repository.
#
# WHAT THIS RUNS
#   * the repository's own structural gates: check_repo.py, check_refs.py,
#     check_budget.py, check_routing.py, and check_commands.py when it is present
#   * the pytest suite: tests/unit, tests/cli, tests/integration
#
# WHAT THIS DOES NOT RUN, ON PURPOSE
#   * anything needing a device, adb, frida, a rooted phone, a network peer or a
#     real sample APK. Those routes are recorded experiments in tests/benchmark.md
#     and their status is documented in
#     docs/tool-verification/EXTENSION-test-harness.md.
#   * anything about agent behaviour. Whether a model routes, classifies or
#     refuses correctly is not observable from a unit test; skills/apk-reverse/
#     evals/evals.json is the skeleton for that, and it has never been executed.
#   * the dex_patch_bytes regression hash. Its input lives in git-ignored
#     tools/_work/bench/, so that test self-skips here with a printed reason
#     rather than failing. Run it locally after downloading the sample.
#
# Coverage is therefore: static structure, documentation anchors, budget, command
# references, routing coherence, pure parsers, CLI contracts, typing/style lint and
# no-device flows. Nothing more is claimed.
name: ci

on:
  push:
  pull_request:
#
# NOTE ON TRIGGERS: no `paths:` filter, deliberately. A filter that watches only
# `*.py` and the lint configuration would skip the structural gates on exactly the
# changes they exist to catch -- a reference index or a documented command edited
# without touching a script. check_refs.py and check_routing.py are documentation
# gates, so they have to run on documentation commits.

permissions:
  contents: read

jobs:
  test:
    name: python ${{ matrix.python-version }}
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        python-version: ["3.11", "3.12", "3.13", "3.14"]

    env:
      PYTHONIOENCODING: utf-8
      PYTHONDONTWRITEBYTECODE: "1"
      # The gates spawn sibling scripts and decode their output. On a Windows
      # runner the default codec is the console's (GBK here), and one script's
      # --help text is not GBK-decodable, which is reported as a crash in that
      # script rather than as a harness decoding problem. Pinning UTF-8 removes
      # the whole class of failure on every platform.
      PYTHONUTF8: "1"

    steps:
      - uses: actions/checkout@v7

      - uses: actions/setup-python@v5
        with:
          python-version: ${{ matrix.python-version }}

      - name: Install test dependencies
        # `tiktoken` is optional for the suite but not for the budget gate's *measurement*: without
        # it, `check_budget.py` falls back to characters/constant, and the two paths must agree.
        # Installing it here means CI exercises the real tokenizer path, and the unit test comparing
        # both paths runs instead of skipping.
        # Not upgrading pip itself: it is not a goal here, and a pip self-upgrade failing would be
        # reported as this repository's regression.
        run: python -m pip install --upgrade pytest tiktoken

      - name: Structural gate - repository layout
        run: python check_repo.py

      - name: Structural gate - documentation anchors
        run: python check_refs.py

      - name: Structural gate - context budget
        run: python check_budget.py

      - name: Structural gate - documented commands (if present)
        run: |
          if [ -f check_commands.py ]; then
            python check_commands.py
          else
            echo "check_commands.py is not present in this revision; skipping."
          fi

      - name: Structural gate - routing inventory matches the entry point
        run: python check_routing.py

      - name: Regression suite
        run: python -m pytest -q

      - name: Summarise skipped and expected-failure coverage
        if: always()
        run: python -m pytest -q -ra --no-header -p no:cacheprovider 2>&1 | tail -n 40

  lint:
    # Static checks over the same tracked surface the local commands cover, so what passes locally
    # cannot drift from what CI enforces. Both tools read their configuration (mypy.ini, .flake8)
    # from the repository root automatically.
    #
    # The environment is deliberately bare -- only mypy and flake8, none of PyYAML, capstone, tiktoken
    # or frida. That is the poorest environment the configuration must keep working in, which is what
    # mypy.ini's ignore_missing_imports overrides exist for: CI exercises the fallbacks instead of a
    # machine-local install hiding a regression.
    #
    # One interpreter, not the matrix: the checks are static, and the matrix's job is runtime
    # behaviour, which lint does not observe. `check_routing.py` -- a gate the test job also runs --
    # is deliberately not repeated here.
    #
    # Verified locally before being added: on a venv with only mypy and flake8, `flake8` reports 0 and
    # `mypy` reports "Success: no issues found in 55 source files".
    name: lint (mypy + flake8)
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v7

      - uses: actions/setup-python@v5
        with:
          python-version: "3.12"

      - name: Install lint dependencies
        run: python -m pip install --upgrade mypy flake8

      - name: mypy
        run: mypy *.py skills/apk-reverse/scripts/*.py

      - name: flake8
        run: flake8 *.py skills/apk-reverse/scripts/*.py