#!/usr/bin/env bash
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )/.."
cd ${DIR}

anisotropy-help()
{
    echo "Usage:"
    echo "    anisotropy <command> [options]"
    echo ""
    echo "Commands:"
    echo "    clean     Clean project directory via git (.gitignore)."
    echo "    init      Activate environment and install dependencies."
    echo "    run       Start calculations and etc."
    echo "    kill      Kill current process by pid"
    echo "    help      Show help for commands."
    echo ""
    echo "Options:"
    echo "    -c, --config <path-to-file>   Use custom configuration file."
    echo "    -s, --safe                    Safe mode (skip successfuly computed mesh/flow)"
    echo "    -a, --all                     All mode (overwrites everything)"
}

case $1 in
    clean)
        git clean -fdx
        ;;

    init)
        python -m venv env
        source env/bin/activate
        python -m pip install --upgrade pip
        python -m pip install -r requirements.txt
        deactivate
        ;;

    run)
        source ${OPENFOAM}
        source env/bin/activate

        mkdir "${DIR}/build"
        echo $$ >"${DIR}/build/anisotropy.pid"

        python "${DIR}/anisotropy/anisotropy.py" ${@:2}
        deactivate

        rm "${DIR}/build/anisotropy.pid"
        ;;

    kill)
        pkill -TERM -P $(cat "${DIR}/build/anisotropy.pid")
        rm "${DIR}/build/anisotropy.pid"
        ;;

    help)
        anisotropy-help
        exit 1
        ;;

    *)
        echo "Unknown command."
        anisotropy-help
        exit 1
        ;;
esac