#!/usr/bin/env bash
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# define test binaries + versions
FLAKE8_BUILD="flake8"
MINIMUM_FLAKE8="3.9.0"
RUFF_BUILD="ruff"
MINIMUM_RUFF="0.14.0"
MINIMUM_MYPY="1.19.1"
MYPY_BUILD="mypy"
PYTEST_BUILD="pytest"

PYTHON_EXECUTABLE="${PYTHON_EXECUTABLE:-python3}"

BLACK_BUILD="$PYTHON_EXECUTABLE -m black"

function exit_with_usage {
 set +x
 echo "lint-python - linter for Python"
 echo ""
 echo "usage:"
 cl_options="[--compile] [--custom-pyspark-error] [--ruff] [--mypy] [--mypy-examples] [--mypy-data]"
 echo "lint-python $cl_options"
 echo ""
 exit 1
}

# Parse arguments
while (( "$#" )); do
 case 1ドル in
 --compile)
 COMPILE_TEST=true
 ;;
 --black)
 BLACK_TEST=true
 ;;
 --custom-pyspark-error)
 PYSPARK_CUSTOM_ERRORS_CHECK_TEST=true
 ;;
 --flake8)
 FLAKE8_TEST=true
 ;;
 --ruff)
 RUFF_TEST=true
 ;;
 --mypy)
 MYPY_TEST=true
 ;;
 --mypy-examples)
 MYPY_EXAMPLES_TEST=true
 ;;
 --mypy-data)
 MYPY_DATA_TEST=true
 ;;
 *)
 echo "Error: 1ドル is not supported"
 exit_with_usage
 ;;
 esac
 shift
done

if [[ -z "$COMPILE_TEST$BLACK_TEST$PYSPARK_CUSTOM_ERRORS_CHECK_TEST$FLAKE8_TEST$RUFF_TEST$MYPY_TEST$MYPY_EXAMPLES_TEST$MYPY_DATA_TEST" ]]; then
COMPILE_TEST=true
PYSPARK_CUSTOM_ERRORS_CHECK_TEST=true
RUFF_TEST=true
MYPY_TEST=true
MYPY_EXAMPLES_TEST=true
MYPY_DATA_TEST=true
fi

function satisfies_min_version {
 local provided_version="1ドル"
 local expected_version="2ドル"
 echo "$(
 "$PYTHON_EXECUTABLE" << EOM
try:
 from setuptools.extern.packaging import version
except ModuleNotFoundError:
 from packaging import version
print(version.parse('$provided_version') >= version.parse('$expected_version'))
EOM
 )"
}

function compile_python_test {
 local COMPILE_STATUS=
 local COMPILE_REPORT=

 if [[ ! "1ドル" ]]; then
echo "No python files found! Something is very wrong -- exiting."
 exit 1;
 fi

 # compileall: https://docs.python.org/3/library/compileall.html
 echo "starting python compilation test..."
 COMPILE_REPORT=$( ("$PYTHON_EXECUTABLE" -B -mcompileall -q -l -x "[/\\\\][.]git" 1ドル) 2>&1)
 COMPILE_STATUS=$?

 if [ $COMPILE_STATUS -ne 0 ]; then
echo "Python compilation failed with the following errors:"
 echo "$COMPILE_REPORT"
 echo "$COMPILE_STATUS"
 exit "$COMPILE_STATUS"
 else
echo "python compilation succeeded."
 echo
fi
}


function mypy_annotation_test {
 local MYPY_REPORT=
 local MYPY_STATUS=

 echo "starting mypy annotations test..."
 MYPY_REPORT=$( ($MYPY_BUILD \
 --python-executable $PYTHON_EXECUTABLE \
 --namespace-packages \
 --config-file python/mypy.ini \
 --cache-dir /tmp/.mypy_cache/ \
 python/pyspark) 2>&1)
 MYPY_STATUS=$?

 if [ "$MYPY_STATUS" -ne 0 ]; then
echo "annotations failed mypy checks:"
 echo "$MYPY_REPORT"
 echo "$MYPY_STATUS"
 exit "$MYPY_STATUS"
 else
echo "annotations passed mypy checks."
 echo
fi
}


function mypy_data_test {
 local PYTEST_REPORT=
 local PYTEST_STATUS=

 echo "starting mypy data test..."

 $PYTHON_EXECUTABLE -c "import importlib.util; import sys; \
 sys.exit(0 if importlib.util.find_spec('pytest_mypy_plugins') else 1)"

 if [ $? -ne 0 ]; then
echo "pytest-mypy-plugins missing. Skipping for now."
 return
 fi

PYTEST_REPORT=$( (MYPYPATH=python $PYTEST_BUILD \
 -o "python_files=test_*.yml" \
 --rootdir python \
 --mypy-only-local-stub \
 --mypy-ini-file python/mypy.ini \
 python/pyspark/tests/typing \
 python/pyspark/sql/tests/typing \
 python/pyspark/ml/tests/typing \
 ) 2>&1)

 PYTEST_STATUS=$?

 if [ "$PYTEST_STATUS" -ne 0 ]; then
echo "annotations failed data checks:"
 echo "$PYTEST_REPORT"
 echo "$PYTEST_STATUS"
 exit "$PYTEST_STATUS"
 else
echo "annotations passed data checks."
 echo
fi
}

function mypy_examples_test {
 local MYPY_REPORT=
 local MYPY_STATUS=

 echo "starting mypy examples test..."

 MYPY_REPORT=$( (MYPYPATH=python $MYPY_BUILD \
 --python-executable $PYTHON_EXECUTABLE \
 --namespace-packages \
 --config-file python/mypy.ini \
 --exclude "mllib/*" \
 examples/src/main/python/) 2>&1)

 MYPY_STATUS=$?

 if [ "$MYPY_STATUS" -ne 0 ]; then
echo "examples failed mypy checks:"
 echo "$MYPY_REPORT"
 echo "$MYPY_STATUS"
 exit "$MYPY_STATUS"
 else
echo "examples passed mypy checks."
 echo
fi
}


function mypy_test {
 if ! hash "$MYPY_BUILD" 2> /dev/null; then
echo "The $MYPY_BUILD command was not found. Skipping for now."
 return
 fi

_MYPY_VERSION=($($MYPY_BUILD --version))
 MYPY_VERSION="${_MYPY_VERSION[1]}"
 EXPECTED_MYPY="$(satisfies_min_version $MYPY_VERSION $MINIMUM_MYPY)"

 if [[ "$EXPECTED_MYPY" == "False" ]]; then
echo "The minimum mypy version needs to be $MINIMUM_MYPY. Your current version is $MYPY_VERSION. Skipping for now."
 return
 fi

 if [[ "$MYPY_TEST" == "true" ]]; then
mypy_annotation_test
 fi
 if [[ "$MYPY_EXAMPLES_TEST" == "true" ]]; then
mypy_examples_test
 fi
 if [[ "$MYPY_DATA_TEST" == "true" ]]; then
mypy_data_test
 fi
}


function flake8_test {
 local FLAKE8_VERSION=
 local EXPECTED_FLAKE8=
 local FLAKE8_REPORT=
 local FLAKE8_STATUS=

 if ! hash "$FLAKE8_BUILD" 2> /dev/null; then
echo "The flake8 command was not found. Skipping for now."
 return
 fi

_FLAKE8_VERSION=($($FLAKE8_BUILD --version))
 FLAKE8_VERSION="${_FLAKE8_VERSION[0]}"
 EXPECTED_FLAKE8="$(satisfies_min_version $FLAKE8_VERSION $MINIMUM_FLAKE8)"

 if [[ "$EXPECTED_FLAKE8" == "False" ]]; then
echo "\
The minimum flake8 version needs to be $MINIMUM_FLAKE8. Your current version is $FLAKE8_VERSION

flake8 checks failed."
 exit 1
 fi

echo "starting $FLAKE8_BUILD test..."
 FLAKE8_REPORT=$( ($FLAKE8_BUILD --append-config dev/tox.ini --count --show-source --statistics .) 2>&1)
 FLAKE8_STATUS=$?

 if [ "$FLAKE8_STATUS" -ne 0 ]; then
echo "flake8 checks failed:"
 echo "$FLAKE8_REPORT"
 echo "$FLAKE8_STATUS"
 exit "$FLAKE8_STATUS"
 else
echo "flake8 checks passed."
 echo
fi
}

function ruff_test {
 local RUFF_VERSION=
 local EXPECTED_RUFF=
 local RUFF_REPORT=
 local RUFF_STATUS=

 if ! hash "$RUFF_BUILD" 2> /dev/null; then
echo "The ruff command was not found. Skipping for now."
 return
 fi

_RUFF_VERSION=($($RUFF_BUILD --version))
 RUFF_VERSION="${_RUFF_VERSION[1]}"
 EXPECTED_RUFF="$(satisfies_min_version $RUFF_VERSION $MINIMUM_RUFF)"

 if [[ "$EXPECTED_RUFF" == "False" ]]; then
echo "\
The minimum ruff version needs to be $MINIMUM_RUFF. Your current version is $RUFF_VERSION

ruff checks failed."
 exit 1
 fi

echo "starting $RUFF_BUILD test..."
 RUFF_REPORT=$( ($RUFF_BUILD check) 2>&1)
 RUFF_STATUS=$?

 if [ "$RUFF_STATUS" -ne 0 ]; then
echo "ruff checks failed:"
 echo "$RUFF_REPORT"
 echo "$RUFF_STATUS"
 exit "$RUFF_STATUS"
 else
echo "ruff checks passed."
 echo
fi

RUFF_REPORT=$( ($RUFF_BUILD format --diff python/pyspark dev python/packaging python/benchmarks) 2>&1)
 RUFF_STATUS=$?

 if [ "$RUFF_STATUS" -ne 0 ]; then
echo "ruff format checks failed:"
 echo "$RUFF_REPORT"
 echo "$RUFF_STATUS"
 exit "$RUFF_STATUS"
 else
echo "ruff format checks passed."
 echo
fi

}

function black_test {
 local BLACK_REPORT=
 local BLACK_STATUS=

 # Skip check if black is not installed.
 $PYTHON_EXECUTABLE -c 'import black' &> /dev/null
 if [ $? -ne 0 ]; then
echo "The Python library providing 'black' module was not found. Skipping black checks for now."
 echo
return
 fi

echo "starting black test..."
 BLACK_REPORT=$( ($BLACK_BUILD --check python/pyspark dev python/packaging python/benchmarks) 2>&1)
 BLACK_STATUS=$?

 if [ "$BLACK_STATUS" -ne 0 ]; then
echo "black checks failed:"
 echo "$BLACK_REPORT"
 echo "Please run 'dev/reformat-python' script."
 echo "$BLACK_STATUS"
 exit "$BLACK_STATUS"
 else
echo "black checks passed."
 echo
fi
}

function pyspark_custom_errors_check_test {
 local PYSPARK_CUSTOM_ERRORS_CHECK_REPORT=
 local PYSPARK_CUSTOM_ERRORS_CHECK_STATUS=

 echo "starting PySpark custom errors check..."
 PYSPARK_CUSTOM_ERRORS_CHECK_REPORT=$( "$PYTHON_EXECUTABLE" dev/check_pyspark_custom_errors.py 2>&1 )
 PYSPARK_CUSTOM_ERRORS_CHECK_STATUS=$?

 if [ "$PYSPARK_CUSTOM_ERRORS_CHECK_STATUS" -ne 0 ]; then
echo "PySpark custom errors check failed!"
 echo "$PYSPARK_CUSTOM_ERRORS_CHECK_REPORT"
 exit "$PYSPARK_CUSTOM_ERRORS_CHECK_STATUS"
 else
echo "PySpark custom errors check passed."
 echo
fi
}

SCRIPT_DIR="$( cd "$( dirname "0ドル" )" && pwd )"
SPARK_ROOT_DIR="$(dirname "${SCRIPT_DIR}")"

pushd "$SPARK_ROOT_DIR" &> /dev/null

PYTHON_SOURCE="$(git ls-files '*.py')"

if [[ "$COMPILE_TEST" == "true" ]]; then
compile_python_test "$PYTHON_SOURCE"
fi
if [[ "$BLACK_TEST" == "true" ]]; then
black_test
fi
if [[ "$PYSPARK_CUSTOM_ERRORS_CHECK_TEST" == "true" ]]; then
pyspark_custom_errors_check_test
fi
if [[ "$FLAKE8_TEST" == "true" ]]; then
flake8_test
fi
if [[ "$RUFF_TEST" == "true" ]]; then
ruff_test
fi
if [[ "$MYPY_TEST" == "true" ]] || [[ "$MYPY_EXAMPLES_TEST" == "true" ]] || [[ "$MYPY_DATA_TEST" == "true" ]]; then
mypy_test
fi

echo
echo "all lint-python tests passed!"

popd &> /dev/null