#
# coding=utf-8
# flake8: noqa E302
"""Development related tasks to be run with 'invoke'.

Make sure you satisfy the following Python module requirements if you are trying to publish a release to PyPI:
    - twine >= 1.11.0
    - wheel >= 0.31.0
    - setuptools >= 39.1.0
"""
import os
import pathlib
import re
import shutil
import sys

import invoke


TASK_ROOT = pathlib.Path(__file__).resolve().parent
TASK_ROOT_STR = str(TASK_ROOT)

# shared function
def rmrf(items, verbose=True):
    "Silently remove a list of directories or files"
    if isinstance(items, str):
        items = [items]

    for item in items:
        if verbose:
            print("Removing {}".format(item))
        shutil.rmtree(item, ignore_errors=True)
        # rmtree doesn't remove bare files
        try:
            os.remove(item)
        except FileNotFoundError:
            pass


# create namespaces
namespace = invoke.Collection()
namespace_clean = invoke.Collection('clean')
namespace.add_collection(namespace_clean, 'clean')

#####
#
# pytest, tox, pylint, and codecov
#
#####
@invoke.task
def pytest(context):
    "Run tests and code coverage using pytest"
    with context.cd(TASK_ROOT_STR):
        context.run("pytest --cov=cmd2_ext_test --cov-report=term --cov-report=html", pty=True)
namespace.add_task(pytest)

@invoke.task
def pytest_junit(context):
    "Run tests and code coverage using pytest"
    with context.cd(TASK_ROOT_STR):
        context.run("pytest --cov --junitxml=junit/test-results.xml", pty=True)
namespace.add_task(pytest_junit)

@invoke.task
def pytest_clean(context):
    "Remove pytest cache and code coverage files and directories"
    #pylint: disable=unused-argument
    with context.cd(TASK_ROOT_STR):
        dirs = ['.pytest_cache', '.cache', 'htmlcov', '.coverage']
        rmrf(dirs)
namespace_clean.add_task(pytest_clean, 'pytest')

@invoke.task
def mypy(context):
    "Run mypy optional static type checker"
    with context.cd(TASK_ROOT_STR):
        context.run("mypy main.py")
        namespace.add_task(mypy)
namespace.add_task(mypy)

@invoke.task
def mypy_clean(context):
    "Remove mypy cache directory"
    #pylint: disable=unused-argument
    with context.cd(TASK_ROOT_STR):
        dirs = ['.mypy_cache', 'dmypy.json', 'dmypy.sock']
        rmrf(dirs)
namespace_clean.add_task(mypy_clean, 'mypy')


#####
#
# documentation
#
#####


#####
#
# build and distribute
#
#####
BUILDDIR = 'build'
DISTDIR = 'dist'

@invoke.task
def build_clean(context):
    "Remove the build directory"
    #pylint: disable=unused-argument
    with context.cd(TASK_ROOT_STR):
        rmrf(BUILDDIR)

namespace_clean.add_task(build_clean, 'build')

@invoke.task
def dist_clean(context):
    "Remove the dist directory"
    #pylint: disable=unused-argument
    with context.cd(TASK_ROOT_STR):
        rmrf(DISTDIR)
namespace_clean.add_task(dist_clean, 'dist')

@invoke.task
def eggs_clean(context):
    "Remove egg directories"
    #pylint: disable=unused-argument
    with context.cd(TASK_ROOT_STR):
        dirs = set()
        dirs.add('.eggs')
        for name in os.listdir(os.curdir):
            if name.endswith('.egg-info'):
                dirs.add(name)
            if name.endswith('.egg'):
                dirs.add(name)
        rmrf(dirs)
namespace_clean.add_task(eggs_clean, 'eggs')

@invoke.task
def pycache_clean(context):
    "Remove __pycache__ directories"
    #pylint: disable=unused-argument
    with context.cd(TASK_ROOT_STR):
        dirs = set()
        for root, dirnames, _ in os.walk(os.curdir):
            if '__pycache__' in dirnames:
                dirs.add(os.path.join(root, '__pycache__'))
        print("Removing __pycache__ directories")
        rmrf(dirs, verbose=False)
namespace_clean.add_task(pycache_clean, 'pycache')

#
# make a dummy clean task which runs all the tasks in the clean namespace
clean_tasks = list(namespace_clean.tasks.values())
@invoke.task(pre=list(namespace_clean.tasks.values()), default=True)
def clean_all(context):
    "Run all clean tasks"
    #pylint: disable=unused-argument
    pass
namespace_clean.add_task(clean_all, 'all')


@invoke.task(pre=[clean_all])
def sdist(context):
    "Create a source distribution"
    with context.cd(TASK_ROOT_STR):
        context.run('python setup.py sdist')
namespace.add_task(sdist)

@invoke.task(pre=[clean_all])
def wheel(context):
    "Build a wheel distribution"
    with context.cd(TASK_ROOT_STR):
        context.run('python setup.py bdist_wheel')
namespace.add_task(wheel)

@invoke.task(pre=[sdist, wheel])
def pypi(context):
    "Build and upload a distribution to pypi"
    with context.cd(TASK_ROOT_STR):
        context.run('twine upload dist/*')
namespace.add_task(pypi)

@invoke.task(pre=[sdist, wheel])
def pypi_test(context):
    "Build and upload a distribution to https://test.pypi.org"
    with context.cd(TASK_ROOT_STR):
        context.run('twine upload --repository-url https://test.pypi.org/legacy/ dist/*')
namespace.add_task(pypi_test)


# Flake8 - linter and tool for style guide enforcement and linting
@invoke.task
def flake8(context):
    "Run flake8 linter and tool for style guide enforcement"
    with context.cd(TASK_ROOT_STR):
        context.run("flake8 --ignore=E252,W503 --max-complexity=26 --max-line-length=127 --show-source --statistics --exclude=.git,__pycache__,.tox,.eggs,*.egg,.venv,.idea,.pytest_cache,.vscode,build,dist,htmlcov")
namespace.add_task(flake8)