#!/bin/bash
set -e

[ $(id -u) -eq 0 ] && {
    echo dont root
    exit 1
}

sarchs="386 amd64 arm/v7 arm64/v8 ppc64le s390x"
archs="amd64 arm s390x 386 arm64 ppc64le"
imgs="dj iv min im ac"
dhub_order="iv dj min im ac"
ghcr_order="ac im min dj iv"
ngs=(
    iv-{ppc64le,s390x}
    dj-{ppc64le,s390x,arm}
)

for v in "$@"; do
    [ "$v" = clean  ] && clean=1
    [ "$v" = hclean ] && hclean=1
    [ "$v" = purge  ] && purge=1
    [ "$v" = pull   ] && pull=1
    [ "$v" = img    ] && img=1
    [ "$v" = push   ] && push=1
    [ "$v" = sh     ] && sh=1
done

[ $# -gt 0 ] || {
    echo "need list of commands, for example: hclean pull img push"
    exit 1
}

[ $sh ] && {
    printf "\n\033[1;31mopening a shell in the most recently created docker image\033[0m\n"
    podman run --rm -it --entrypoint /bin/ash $(podman images -aq | head -n 1)
    exit $?
}

filt=
[ $clean  ] && filt='/<none>/{print$$3}'
[ $hclean ] && filt='/localhost\/copyparty-|^<none>.*localhost\/alpine-/{print$3}'
[ $purge  ] && filt='NR>1{print$3}'
[ $filt ] && {
    [ $purge ] && {
        podman kill $(podman ps -q)  || true
        podman rm   $(podman ps -qa) || true
    }
	podman rmi -f $(podman images -a --history | awk "$filt") || true
    podman rmi $(podman images -a --history | awk '/^<none>.*<none>.*-tmp:/{print$3}') || true
}

[ $pull ] && {
    for a in $sarchs; do  # arm/v6
        podman pull --arch=$a alpine:latest
    done
    
    podman images --format "{{.ID}} {{.History}}" |
    awk '/library\/alpine/{print$1}' |
    while read id; do
        tag=alpine-$(podman inspect $id | jq -r '.[]|.Architecture' | tr / -)
        [ -e .tag-$tag ] && continue
        touch .tag-$tag
        echo tagging $tag
        podman untag $id
        podman tag $id $tag
    done
    rm .tag-*
}

[ $img ] && {
    fp=../../dist/copyparty-sfx.py
    [ -e $fp ] || {
        echo downloading copyparty-sfx.py ...
        mkdir -p ../../dist
        wget https://github.com/9001/copyparty/releases/latest/download/copyparty-sfx.py -O $fp
    }

    # kill abandoned builders
    ps aux | awk '/bin\/qemu-[^-]+-static/{print$2}' | xargs -r kill -9

    # grab deps
    rm -rf i err
    mkdir i
    tar -cC../.. dist/copyparty-sfx.py bin/mtag | tar -xvCi

    for i in $imgs; do
        podman rm copyparty-$i || true  # old manifest
        for a in $archs; do
            [[ " ${ngs[*]} " =~ " $i-$a " ]] && continue  # known incompat

            # wait for a free slot
            while true; do
                touch .blk
                [ $(jobs -p | wc -l) -lt $(nproc) ] && break
                while [ -e .blk ]; do sleep 0.2; done
            done
            aa="$(printf '%11s' $a-$i)"

            # arm takes forever so make it top priority
            [ ${a::3} == arm ] && nice= || nice=nice

            # --pull=never does nothing at all btw
            (set -x
            $nice podman build \
                --pull=never \
                --from localhost/alpine-$a \
                -t copyparty-$i-$a \
                -f Dockerfile.$i . ||
                    (echo $? $i-$a >> err)
            rm -f .blk
            ) 2> >(tee $a.err | sed "s/^/$aa:/" >&2) > >(tee $a.out | sed "s/^/$aa:/") &
        done
        [ -e err ] && {
            echo somethign died,
            cat err
            pkill -P $$
            exit 1
        }
        for a in $archs; do
            rm -f $a.{out,err}
        done
    done
    wait
    [ -e err ] && {
        echo somethign died,
        cat err
        pkill -P $$
        exit 1
    }
    # avoid podman race-condition by creating manifest manually --
    # Error: creating image to hold manifest list: image name "localhost/copyparty-dj:latest" is already associated with image "[0-9a-f]{64}": that name is already in use
    for i in $imgs; do
        variants=
        for a in $archs; do
            [[ " ${ngs[*]} " =~ " $i-$a " ]] && continue
            variants="$variants containers-storage:localhost/copyparty-$i-$a"
        done
        podman manifest create copyparty-$i $variants
    done
}

[ $push ] && {
    ver=$(
        python3 ../../dist/copyparty-sfx.py --version 2>/dev/null |
        awk '/^copyparty v/{sub(/-.*/,"");sub(/v/,"");print$2;exit}'
    )
    echo $ver | grep -E '[0-9]\.[0-9]' || {
        echo no ver
        exit 1
    }
    for i in $dhub_order; do
        printf '\ndockerhub %s\n' $i
        podman manifest push --all copyparty-$i copyparty/$i:$ver
        podman manifest push --all copyparty-$i copyparty/$i:latest
    done &
    for i in $ghcr_order; do
        printf '\nghcr %s\n' $i
        podman manifest push --all copyparty-$i ghcr.io/9001/copyparty-$i:$ver
        podman manifest push --all copyparty-$i ghcr.io/9001/copyparty-$i:latest
    done &
    wait
}

echo ok