#!/bin/sh

set -ex 

CONTAINERRUNTIMES='docker' # currently not enabled podman nerdctl
for CONTAINERRUNTIME in $CONTAINERRUNTIMES /
do
    type $CONTAINERRUNTIME 2>/dev/null && break
    test "$CONTAINERRUNTIME" = / && { 
        echo "install a container runtime (e.g ${CONTAINERRUNTIMES//\ /\/})" >&2
        exit 2
    }
done

HASHES='md5sum cksum sha1sum base64 uuencode'
for HASH in $HASHES /
do
    type $HASH 2>/dev/null && break
    test "$HASH" = / && { 
        echo "install checksum (e.g ${HASHES//\ /\/})" >&2
        exit 3
    }
done

DockerfileContent(){
cat << 'DOCKERFILEEOF'
FROM debian:latest
ARG YESACCEPT=n
RUN test "$YESACCEPT" = "y" || { printf "\033[31;1;4m%s\n%s\033[0m " "FAILED TO BUILD CONTAINER: You did not ACCEPT THE UPSTREAM LICENSE" " -> export YESACCEPT=y" >&2; exit 1; }
RUN apt-get update -y && apt-get install -y make openjdk-17-jdk-headless unzip zip wget curl
ENV ANDROID_SDK_ROOT="/opt/android"
ENV BUILD_TOOLS_LATEST="$ANDROID_SDK_ROOT/cmdline-tools/latest"
SHELL ["/bin/bash", "-c"]
RUN BUILD_TOOLS="$(realpath -m "$BUILD_TOOLS_LATEST/..")";\
    mkdir -p "$BUILD_TOOLS";\
    cd "$BUILD_TOOLS";\
    pwd;\
    for LATESTTOOLS in \
      "$(curl https://developer.android.com/studio#command-line-tools-only | grep -e 'https://dl.google.com/android/repository/commandlinetools-linux-.*_latest.zip' | cut -f2 -d'"')" \
      'https://dl.google.com/android/repository/commandlinetools-linux-11076708_latest.zip' ;\
    do \
      echo "testing to get '$LATESTTOOLS'";\
      echo test "${LATESTTOOLS:0:22}" = "https://dl.google.com/" -a "${LATESTTOOLS:(-11)}" = "_latest.zip" ;\
      test "${LATESTTOOLS:0:22}" = "https://dl.google.com/" -a "${LATESTTOOLS:(-11)}" = "_latest.zip" || { echo "unsure of URL $LATESTTOOLS correct, skipping it..." >&2; continue; }; \
      wget -O cmdline-tools.zip "$LATESTTOOLS" ;\
      unzip cmdline-tools.zip && break || { echo "error downloading working cmdline-tools.zip"; exit 1; };\
    done;\
    ls ;\
    ls cmdline-tools;\
    rm cmdline-tools.zip;\
    mv -v cmdline-tools "$BUILD_TOOLS_LATEST" || true
ENV PATH="$BUILD_TOOLS_LATEST/bin:$PATH"
#TODO make this automatic
ENV JAVA_HOME="/usr/lib/jvm/java-17-openjdk/"
ENV LIBRARY_PATH="$LIBRARY_PATH:$BUILD_TOOLS_LATEST/lib"
RUN echo you selected to accept the licenses/TOS
#RUN echo "$YESACCEPT" | sdkmanager --install "build-tools;33.0.2"
#RUN echo "$YESACCEPT" | sdkmanager --install "platforms;android-33"
DOCKERFILEEOF
}

diff Dockerfile <(DockerfileContent) 2>/dev/null > /dev/null || {
    read -p 'reset/start Dockerfile[Y/n]' YES
    test "$YES" = "n" && { echo "aborting..." >&2; exit 1; }
    DockerfileContent > Dockerfile
}


IMAGE=android-app:"$($HASH Dockerfile | tr -cd '[a-zA-Z0-9]' | head -c 12)"
$CONTAINERRUNTIME build --build-arg YESACCEPT="$YESACCEPT" --tag "$IMAGE" .

SOCKET="$($CONTAINERRUNTIME context inspect | grep '"Host":' | cut -d'"' -f4)"
test "${SOCKET:0:8}" = "unix:///" || {
    echo "Container runtime socket needs to be a unix socket and thus mountable" >&2
    exit 4
}

$CONTAINERRUNTIME run -e YESACCEPT="$YESACCEPT" -v "${SOCKET:7}":"/var/run/docker.sock" -it --rm "$IMAGE"