duties.py

"""Development tasks."""

from __future__ import annotations

import os
import sys
from importlib.metadata import version as pkgversion
from pathlib import Path
from typing import TYPE_CHECKING, Any

from duty import duty
from duty.callables import black, blacken_docs, coverage, lazy, mkdocs, mypy, pytest, ruff, safety

if TYPE_CHECKING:
    from duty.context import Context

PY_SRC_PATHS = (Path(_) for _ in ("src", "tests", "duties.py", "scripts"))
PY_SRC_LIST = tuple(str(_) for _ in PY_SRC_PATHS)
PY_SRC = " ".join(PY_SRC_LIST)
CI = os.environ.get("CI", "0") in {"1", "true", "yes", ""}
WINDOWS = os.name == "nt"
PTY = not WINDOWS and not CI
MULTIRUN = os.environ.get("PDM_MULTIRUN", "0") == "1"


def pyprefix(title: str) -> str:  # noqa: D103
    if MULTIRUN:
        prefix = f"(python{sys.version_info.major}.{sys.version_info.minor})"
        return f"{prefix:14}{title}"
    return title


def merge(d1: Any, d2: Any) -> Any:  # noqa: D103
    basic_types = (int, float, str, bool, complex)
    if isinstance(d1, dict) and isinstance(d2, dict):
        for key, value in d2.items():
            if key in d1:
                if isinstance(d1[key], basic_types):
                    d1[key] = value
                else:
                    d1[key] = merge(d1[key], value)
            else:
                d1[key] = value
        return d1
    if isinstance(d1, list) and isinstance(d2, list):
        return d1 + d2
    return d2


def mkdocs_config() -> str:  # noqa: D103
    import mergedeep

    # force YAML loader to merge arrays
    mergedeep.merge = merge

    if "+insiders" in pkgversion("mkdocs-material"):
        return "mkdocs.insiders.yml"
    return "mkdocs.yml"


@duty
def changelog(ctx: Context) -> None:
    """Update the changelog in-place with latest commits.

    Parameters:
        ctx: The context instance (passed automatically).
    """
    from git_changelog.cli import build_and_render

    git_changelog = lazy(build_and_render, name="git_changelog")
    ctx.run(
        git_changelog(
            repository=".",
            output="CHANGELOG.md",
            convention="angular",
            template="keepachangelog",
            parse_trailers=True,
            parse_refs=False,
            sections=["build", "deps", "feat", "fix", "refactor"],
            bump_latest=True,
            in_place=True,
        ),
        title="Updating changelog",
    )


@duty(pre=["check_quality", "check_types", "check_docs", "check_dependencies", "check-api"])
def check(ctx: Context) -> None:  # noqa: ARG001
    """Check it all!

    Parameters:
        ctx: The context instance (passed automatically).
    """


@duty
def check_quality(ctx: Context) -> None:
    """Check the code quality.

    Parameters:
        ctx: The context instance (passed automatically).
    """
    ctx.run(
        ruff.check(*PY_SRC_LIST, config="config/ruff.toml"),
        title=pyprefix("Checking code quality"),
        command=f"ruff check --config config/ruff.toml {PY_SRC}",
    )


@duty
def check_dependencies(ctx: Context) -> None:
    """Check for vulnerabilities in dependencies.

    Parameters:
        ctx: The context instance (passed automatically).
    """
    # retrieve the list of dependencies
    requirements = ctx.run(
        ["pdm", "export", "-f", "requirements", "--without-hashes"],
        title="Exporting dependencies as requirements",
        allow_overrides=False,
    )

    ctx.run(
        safety.check(requirements),
        title="Checking dependencies",
        command="pdm export -f requirements --without-hashes | safety check --stdin",
    )


@duty
def check_docs(ctx: Context) -> None:
    """Check if the documentation builds correctly.

    Parameters:
        ctx: The context instance (passed automatically).
    """
    Path("htmlcov").mkdir(parents=True, exist_ok=True)
    Path("htmlcov/index.html").touch(exist_ok=True)
    config = mkdocs_config()
    ctx.run(
        mkdocs.build(strict=True, config_file=config, verbose=True),
        title=pyprefix("Building documentation"),
        command=f"mkdocs build -vsf {config}",
    )


@duty
def check_types(ctx: Context) -> None:
    """Check that the code is correctly typed.

    Parameters:
        ctx: The context instance (passed automatically).
    """
    ctx.run(
        mypy.run(*PY_SRC_LIST, config_file="config/mypy.ini"),
        title=pyprefix("Type-checking"),
        command=f"mypy --config-file config/mypy.ini {PY_SRC}",
    )


@duty
def check_api(ctx: Context) -> None:
    """Check for API breaking changes.

    Parameters:
        ctx: The context instance (passed automatically).
    """
    from griffe.cli import check as g_check

    griffe_check = lazy(g_check, name="griffe.check")
    ctx.run(
        griffe_check("git_changelog", search_paths=["src"], color=True),
        title="Checking for API breaking changes",
        command="griffe check -ssrc git_changelog",
        nofail=True,
    )


@duty(silent=True)
def clean(ctx: Context) -> None:
    """Delete temporary files.

    Parameters:
        ctx: The context instance (passed automatically).
    """
    ctx.run("rm -rf .coverage*")
    ctx.run("rm -rf .mypy_cache")
    ctx.run("rm -rf .pytest_cache")
    ctx.run("rm -rf tests/.pytest_cache")
    ctx.run("rm -rf build")
    ctx.run("rm -rf dist")
    ctx.run("rm -rf htmlcov")
    ctx.run("rm -rf pip-wheel-metadata")
    ctx.run("rm -rf site")
    ctx.run("find . -type d -name __pycache__ | xargs rm -rf")
    ctx.run("find . -name '*.rej' -delete")


@duty
def docs(ctx: Context, host: str = "127.0.0.1", port: int = 8000) -> None:
    """Serve the documentation (localhost:8000).

    Parameters:
        ctx: The context instance (passed automatically).
        host: The host to serve the docs from.
        port: The port to serve the docs on.
    """
    ctx.run(
        mkdocs.serve(dev_addr=f"{host}:{port}", config_file=mkdocs_config()),
        title="Serving documentation",
        capture=False,
    )


@duty
def docs_deploy(ctx: Context) -> None:
    """Deploy the documentation on GitHub pages.

    Parameters:
        ctx: The context instance (passed automatically).
    """
    os.environ["DEPLOY"] = "true"
    config_file = mkdocs_config()
    if config_file == "mkdocs.yml":
        ctx.run(lambda: False, title="Not deploying docs without Material for MkDocs Insiders!")
    ctx.run(mkdocs.gh_deploy(config_file=config_file), title="Deploying documentation")


@duty
def format(ctx: Context) -> None:
    """Run formatting tools on the code.

    Parameters:
        ctx: The context instance (passed automatically).
    """
    ctx.run(
        ruff.check(*PY_SRC_LIST, config="config/ruff.toml", fix_only=True, exit_zero=True),
        title="Auto-fixing code",
    )
    ctx.run(black.run(*PY_SRC_LIST, config="config/black.toml"), title="Formatting code")
    ctx.run(
        blacken_docs.run(*PY_SRC_LIST, "docs", exts=["py", "md"], line_length=120),
        title="Formatting docs",
        nofail=True,
    )


@duty(post=["docs-deploy"])
def release(ctx: Context, version: str) -> None:
    """Release a new Python package.

    Parameters:
        ctx: The context instance (passed automatically).
        version: The new version number to use.
    """
    ctx.run("git add pyproject.toml CHANGELOG.md", title="Staging files", pty=PTY)
    ctx.run(["git", "commit", "-m", f"chore: Prepare release {version}"], title="Committing changes", pty=PTY)
    ctx.run(f"git tag {version}", title="Tagging commit", pty=PTY)
    ctx.run("git push", title="Pushing commits", pty=False)
    ctx.run("git push --tags", title="Pushing tags", pty=False)
    ctx.run("pdm build", title="Building dist/wheel", pty=PTY)
    ctx.run("twine upload --skip-existing dist/*", title="Publishing version", pty=PTY)


@duty(silent=True, aliases=["coverage"])
def cov(ctx: Context) -> None:
    """Report coverage as text and HTML.

    Parameters:
        ctx: The context instance (passed automatically).
    """
    ctx.run(coverage.combine, nofail=True)
    ctx.run(coverage.report(rcfile="config/coverage.ini"), capture=False)
    ctx.run(coverage.html(rcfile="config/coverage.ini"))


@duty
def test(ctx: Context, match: str = "") -> None:
    """Run the test suite.

    Parameters:
        ctx: The context instance (passed automatically).
        match: A pytest expression to filter selected tests.
    """
    py_version = f"{sys.version_info.major}{sys.version_info.minor}"
    os.environ["COVERAGE_FILE"] = f".coverage.{py_version}"
    ctx.run(
        pytest.run("-n", "auto", "tests", config_file="config/pytest.ini", select=match, color="yes"),
        title=pyprefix("Running tests"),
        command=f"pytest -c config/pytest.ini -n auto -k{match!r} --color=yes tests",
    )