import os
import shlex
import shutil
from pathlib import Path

from invoke import task

ROOT = Path(__file__).parent
PYPROJECT = ROOT / "pyproject.toml"

NORMAL_PYPROJECT = ROOT / "pyproject.patch.toml"
DEPRECATED_PYPROJECT = ROOT / "pyproject.plugin.toml"


def get_version() -> str:
    for line in (ROOT / "pyproject.toml").read_text("utf-8").splitlines():
        if line.startswith("version ="):
            return line.replace("version = ", "").strip('"')

    return "0.0.0"


@task
def pdv(ctx):
    if NORMAL_PYPROJECT.exists():
        PYPROJECT.rename(DEPRECATED_PYPROJECT)
        NORMAL_PYPROJECT.rename(PYPROJECT)


@task
def pdvp(ctx):
    if DEPRECATED_PYPROJECT.exists():
        PYPROJECT.rename(NORMAL_PYPROJECT)
        DEPRECATED_PYPROJECT.rename(PYPROJECT)


@task
def build(ctx, clean=True):
    with ctx.cd(ROOT):
        if clean:
            shutil.rmtree("dist", ignore_errors=True)
        ctx.run("poetry build")


@task
def test(ctx, unit=False, integration=False, pattern=None, pipx=False):
    all = not unit and not integration

    # This ensures we use the global Poetry instead of the venv's Poetry:
    os.environ.update({"POETRY": shutil.which("poetry")})

    if pipx:
        os.environ.update({"POETRY_DYNAMIC_VERSIONING_TEST_INSTALLATION": "pipx"})

    if pattern is None:
        pattern = ""
    else:
        pattern = "-k {}".format(pattern)

    with ctx.cd(ROOT):
        if unit or all:
            ctx.run("poetry run pytest tests/test_unit.py {}".format(pattern))
        if integration or all:
            ctx.run("poetry run pytest tests/test_integration.py {}".format(pattern))


@task
def install(ctx, pip=False, pipx=False):
    with ctx.cd(ROOT):
        uninstall(ctx, pip, pipx)
        build(ctx)
        wheel = next(ROOT.glob("dist/*.whl"))
        if pip:
            ctx.run('pip install "{}[plugin]"'.format(wheel))
        elif pipx:
            ctx.run('pipx inject poetry "{}[plugin]"'.format(wheel))
        else:
            ctx.run('poetry self add "{}[plugin]"'.format(wheel))


@task
def uninstall(ctx, pip=False, pipx=False):
    try:
        if pip:
            ctx.run("pip uninstall -y poetry-dynamic-versioning")
        elif pipx:
            ctx.run("pipx uninject poetry poetry-dynamic-versioning")
        else:
            ctx.run("poetry self remove poetry-dynamic-versioning")
    except Exception:
        pass


@task
def docs(ctx):
    version = get_version()
    manpage = "docs/poetry-dynamic-versioning.1"

    args = [
        "poetry",
        "run",
        "argparse-manpage",
        "--pyfile",
        "poetry_dynamic_versioning/cli.py",
        "--function",
        "get_parser",
        "--project-name",
        "poetry-dynamic-versioning",
        "--prog",
        "poetry-dynamic-versioning",
        "--version",
        version,
        "--author",
        '"Matthew T. Kennerly (mtkennerly)"',
        "--url",
        "https://github.com/mtkennerly/poetry-dynamic-versioning",
        "--format",
        "single-commands-section",
        "--output",
        manpage,
        "--manual-title",
        "poetry-dynamic-versioning",
    ]
    ctx.run(shlex.join(args))