#!/bin/bash
#

# Copyright (C) 2010, 2011, 2012 Google Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# 1. Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
# IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

set -e
set -u

: ${PYTHON:=python}
: ${COVERAGE:?}
: ${COVERAGE_FILE:?}
: ${TEXT_COVERAGE:?}
: ${HTML_COVERAGE:=}
: ${GANETI_TEMP_DIR:?}

reportargs=(
  '--include=*'
  '--omit=test/py/*'
  )

$COVERAGE erase

if [[ -n "$HTML_COVERAGE" ]]; then
  if [[ ! -d "$HTML_COVERAGE" ]]; then
    echo "Not a directory: $HTML_COVERAGE" >&2
    exit 1
  fi

  # At least coverage 3.4 fails to overwrite files
  find "$HTML_COVERAGE" \( -type f -o -type l \) -delete
fi

for script; do
  if [[ "$script" == *-runasroot.py ]]; then
    if [[ -z "$FAKEROOT" ]]; then
      echo "WARNING: FAKEROOT variable not set: skipping $script" >&2
      continue
    fi
    cmdprefix="$FAKEROOT"
  else
    cmdprefix=
  fi
  $cmdprefix $COVERAGE run --branch --append "${reportargs[@]}" $script
done

echo "Writing text report to $TEXT_COVERAGE ..." >&2
$COVERAGE report "${reportargs[@]}" | tee "$TEXT_COVERAGE"

if [[ -n "$HTML_COVERAGE" ]]; then
  echo "Generating HTML report in $HTML_COVERAGE ..." >&2
  $COVERAGE html "${reportargs[@]}" -d "$HTML_COVERAGE"
fi