pythonw

#!/usr/bin/env bash

## downloads URl to file OUTPUT
## download is skipped if file SIZE is supplied and file exists and size matches
function download() {
	URL=$1
	OUTPUT=$2
	SIZE=$3

	if [ -n "$SIZE" -a -f "$OUTPUT" ]; then
		if [ $(stat -c%s "$OUTPUT") == "$SIZE" ]; then
			echo "$OUTPUT already downloaded, size matched"
			return 0
		else
			echo "$OUTPUT size differs redownloading from $URL..."
		fi
	fi

	mkdir -p $(dirname "$OUTPUT")
	if which curl; then
		curl --location --output "$OUTPUT" "$URL"
	elif which wget; then
		wget "--output-document=$OUTPUT" "$URL"
	else
		echo "unable to download $1 neither wget nor curl found"
		exit 1
	fi

	if [ -n "$SIZE" ]; then
		if [ $(stat -c%s "$OUTPUT") != $SIZE ]; then
			echo "size differs after download, it was unsuccessfull"
			return 1
		fi
	fi
}

#
SELFDIR=$(dirname "$0")
ROOT="$SELFDIR/.python/linux"
PYTHON_HOME="$ROOT/miniconda/envs/default"

# requirements
if [ ! -f "$PYTHON_HOME/bin/activate" ]; then
    # install
    if [ ! -d "$ROOT/miniconda" ]; then
        mkdir -p "$ROOT/temp"
        download https://repo.continuum.io/miniconda/Miniconda3-4.2.12-Linux-x86.sh "$ROOT/temp/miniconda-installer.sh" 29051880

        echo "miniconda is to be installed into $ROOT/miniconda"
        bash "$ROOT/temp/miniconda-installer.sh" -b -p "$ROOT/miniconda"
    fi

    echo "virtual environment is to be installed into $PYTHON_HOME"
    echo y | "$ROOT/miniconda/bin/conda" create --name default pip
fi


source "$ROOT/miniconda/bin/activate" default
if [ -f requirements.txt ]; then
	PIP_INSTALL_OUTPUT=$("$PYTHON_HOME/bin/pip" install -r ./requirements.txt)
	RESULT_CODE=$?
	if [ 0 != $RESULT_CODE ]; then
		echo "$PIP_INSTALL_OUTPUT"
		exit $RESULT_CODE
	fi
fi


"$PYTHON_HOME/bin/python" "$@"