#!/bin/bash

function usage {
  echo "Usage: $0 [OPTION]..."
  echo "Run Keystone's test suite(s)"
  echo ""
  echo "  -V, --virtual-env        Always use virtualenv.  Install automatically if not present"
  echo "  -N, --no-virtual-env     Don't use virtualenv.  Run tests in local environment"
  echo "  -f, --force              Force a clean re-build of the virtual environment. Useful when dependencies have been added."
  echo "  --with-coverage          Runs tests with python code coverage (useful for jenkins)"
  echo "                             Note: cannot be used in combination --with-progress"
  echo "  --with-progress          Runs tests with progress (useful for developers)"
  echo "                             Note: cannot be used in combination --with-coverage"
  echo "  -p, --pep8               Just run pep8"
  echo "  -l, --pylint             Just run pylint"
  echo "  -h, --help               Print this usage message"
  echo ""
  echo "Note: with no options specified, the script will try to run the tests in a virtual environment,"
  echo "      If no virtualenv is found, the script will ask if you would like to create one.  If you "
  echo "      prefer to run tests NOT in a virtual environment, simply pass the -N option."
  exit
}

function process_option {
  case "$1" in
    -h|--help) usage;;
    -V|--virtual-env) let always_venv=1; let never_venv=0;;
    -N|--no-virtual-env) let always_venv=0; let never_venv=1;;
    -p|--pep8) let just_pep8=1;;
    -l|--pylint) let just_pylint=1; let never_venv=0;;
    -f|--force) let force=1;;
    *) addlargs="$addlargs $1"
  esac
}

venv=.keystone-venv
with_venv=tools/with_venv.sh
always_venv=0
never_venv=0
force=0
addlargs=
wrapper=""
just_pep8=0
just_pylint=0

for arg in "$@"; do
  process_option $arg
done
RUNTESTS="python run_tests.py $addlargs"

function run_tests {
  # Just run the test suites in current environment
  ${wrapper} $RUNTESTS
}

function run_pep8 {
  echo "Running pep8 ..."
  PEP8_EXCLUDE="vcsversion.py"
  PEP8_OPTIONS="--exclude=$PEP8_EXCLUDE --repeat --show-pep8 --show-source"
  PEP8_INCLUDE="bin/k* keystone examples tools setup.py run_tests.py"
  ${wrapper} pep8 $PEP8_OPTIONS $PEP8_INCLUDE
}

function run_pylint {
  echo "Running pylint ..."
  PYLINT_OPTIONS="--rcfile=.pylintrc --output-format=parseable"
  PYLINT_INCLUDE="keystone"
  echo "Pylint messages count: "
  pylint $PYLINT_OPTIONS $PYLINT_INCLUDE | grep 'keystone/' | wc -l
  echo "Run 'pylint $PYLINT_OPTIONS $PYLINT_INCLUDE' for a full report."
}

if [ $never_venv -eq 0 ]
then
  # Remove the virtual environment if --force used
  if [ $force -eq 1 ]; then
    echo "Cleaning virtualenv..."
    rm -rf ${venv}
  fi
  if [ -e ${venv} ]; then
    wrapper="${with_venv}"
  else
    if [ $always_venv -eq 1 ]; then
      # Automatically install the virtualenv
      python tools/install_venv.py
      wrapper="${with_venv}"
    else
      echo -e "No virtual environment found...create one? (Y/n) \c"
      read use_ve
      if [ "x$use_ve" = "xY" -o "x$use_ve" = "x" -o "x$use_ve" = "xy" ]; then
        # Install the virtualenv and run the test suite in it
        python tools/install_venv.py
        wrapper=${with_venv}
      fi
    fi
  fi
fi

if [ $just_pep8 -eq 1 ]; then
    run_pep8
    exit
fi

if [ $just_pylint -eq 1 ]; then
    run_pylint
    exit
fi

run_tests || exit