#!/usr/bin/env bash

# this program generates py-interface/amdsmi_wrapper.py

set -eu

# get current dir
DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )

# override by calling this script with:
# DOCKER_NAME=yourdockername ./update_wrapper.sh
DOCKER_NAME="${DOCKER_NAME:-dmitriigalantsev/amdsmi_wrapper_updater}"

command -v docker &>/dev/null || {
    echo "Please install docker!" >&2
    exit 1
}

does_image_exist () {
    docker images | grep -q "$DOCKER_NAME"
}

if ! does_image_exist; then
    # if you prefer to not generate it yourself:
    # pull from https://hub.docker.com/r/dmitriigalantsev/amdsmi_wrapper_updater
    # using the following command:
    # docker pull dmitriigalantsev/amdsmi_wrapper_updater
    echo "No docker image found! Generating one"
    # set to 0 because it's compatible with more systems
    DOCKER_BUILDKIT="${DOCKER_BUILDKIT:=0}" docker build "$DIR/py-interface" -t "$DOCKER_NAME":latest
fi

ENABLE_ESMI_LIB=""
# source ENABLE_ESMI_LIB variable from the previous build if it exists
if [ -e 'build/CMakeCache.txt' ]; then
    GREP_RESULT=$(grep "ENABLE_ESMI_LIB.*=" "${DIR}/build/CMakeCache.txt" | tail -n 1 | cut -d = -f 2)
    ENABLE_ESMI_LIB="-DENABLE_ESMI_LIB=$GREP_RESULT"
    echo "ENABLE_ESMI_LIB: [$ENABLE_ESMI_LIB]"
fi

docker run --rm -ti --volume "$DIR":/src:rw "$DOCKER_NAME":latest bash -c "
cp -r /src /tmp/src \
    && cd /tmp/src \
    && rm -rf build .cache \
    && cmake -B build -DBUILD_WRAPPER=ON $ENABLE_ESMI_LIB \
    && make -C build -j $(nproc) \
    && cp /tmp/src/py-interface/amdsmi_wrapper.py /src/py-interface/amdsmi_wrapper.py \
    && chown --reference /src/py-interface/CMakeLists.txt /src/py-interface/amdsmi_wrapper.py"

echo -e "Generated new wrapper!
[$DIR/py-interface/amdsmi_wrapper.py]"