#!/bin/bash

set -e
pushd $(cd $(dirname ${0})/..; pwd) > /dev/null

case "${OSTYPE}" in
    msys*) python="winpty python";;
    *) python="python";;
esac

venv() {
    env_dir=./third_party/env/keras
    [ -d "${env_dir}" ] || ${python} -m venv ${env_dir}
    case "${OSTYPE}" in
        msys*) source ${env_dir}/Scripts/activate;;
        *) source ${env_dir}/bin/activate;;
    esac
    ${python} -m pip install --quiet --upgrade pip
}

clean() {
    echo "tf clean"
    rm -rf "./third_party/env/keras"
    rm -rf "./third_party/source/keras"
}

sync() {
    echo "keras sync"
    [ -d "./third_party/source/keras" ] || git clone --quiet https://github.com/keras-team/keras.git "./third_party/source/keras"
    git -C "./third_party/source/keras" pull --quiet --prune
}

install() {
    echo "keras install"
    venv
    ${python} -m pip install --quiet --upgrade packaging
    ${python} -m pip install --quiet --upgrade keras-nightly
    ${python} -m pip install --quiet --upgrade jax[cpu]
    deactivate
}

metadata() {
    echo "keras metadata"
    venv
    if [[ $(grep -U $'\x0D' ./source/keras-metadata.json) ]]; then crlf=1; else crlf=; fi
    ${python} ./tools/keras_metadata.py
    if [[ -n ${crlf} ]]; then
        unix2dos --quiet --newfile ./source/keras-metadata.json ./source/keras-metadata.json
    fi
    deactivate
}

while [ "$#" != 0 ]; do
    command="$1" && shift
    case "${command}" in
        "clean") clean;;
        "sync") sync;;
        "install") install;;
        "metadata") metadata;;
    esac
done