#!/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.
$PYFLAKES $PY_FILES
$PEP8 --ignore=E123,E501 $PY_FILES


#------------------------------------------------------------------------------#
# check the syntax of included shell scripts

# use bash to check that the syntax is correct
for f in $SH_FILES; do
    if bash -n $f; then
        : # success! do nothing
    else
        err "FAILED!"
    fi
done

exit 0