#!/bin/sh
#
# Simple pre-commit hook to check that there are no errors in the fdroid
# metadata files.

# Redirect output to stderr.
exec 1>&2

PY_FILES="fdroid makebuildserver setup.py examples/*.py buildserver/*.py fdroidserver/*.py"
SH_FILES="fd-commit jenkins-build docs/*.sh hooks/pre-commit"

err() {
	echo ERROR: "$@"
	exit 1
}

cmd_exists() {
	command -v $1 1>/dev/null
}

# For systems that switched to python3, first check for the python2 versions

if cmd_exists pyflakes-python2; then
	PYFLAKES=pyflakes-python2
elif cmd_exists pyflakes; then
	PYFLAKES=pyflakes
else
	err "pyflakes is not installed!"
fi

if cmd_exists pep8-python2; then
	PEP8=pep8-python2
elif cmd_exists pep8; then
	PEP8=pep8
else
	err "pep8 is not installed!"
fi

# If there are python errors or warnings, print them and fail.

if ! $PYFLAKES $PY_FILES; then
	err "pyflakes tests failed!"
fi

if ! $PEP8 --ignore=E123,E501 $PY_FILES; then
	err "pep8 tests failed!"
fi


# check the syntax of included shell scripts with bash -n

for f in $SH_FILES; do
	if ! bash -n $f; then
		err "bash tests failed!"
	fi
done

exit 0