BITCOIN_CORE_VERSION_DIR_AARCH64=bitcoin-24.0.1
BITCOIN_CORE_URL_AARCH64=https://bitcoincore.org/bin/bitcoin-core-24.0.1/bitcoin-24.0.1-aarch64-linux-gnu.tar.gz
BITCOIN_CORE_SHA256_AARCH64=0b48b9e69b30037b41a1e6b78fb7cbcc48c7ad627908c99686e81f3802454609

BITCOIN_HOME=/home/bitcoind

bitcoin_core_bin_install() {
    cd $BITCOIN_HOME
    local targz=$BITCOIN_CORE_VERSION_DIR_AARCH64.tar.gz
    test -f $BITCOIN_CORE_VERSION_DIR_AARCH64/bin/bitcoind && return 0;
    curl -sSL -o $targz "$BITCOIN_CORE_URL_AARCH64"
    if [ $? -ne 0 ]; then
        printf "ERROR: unable to download $BITCOIN_CORE_URL_AARCH64\n" 1>&2
        return 1
    fi
    printf "$BITCOIN_CORE_SHA256_AARCH64 $targz" | sha256sum --check
    [ $? -ne 0 ] && return 1
    tar -C $BITCOIN_HOME --no-same-owner -xf $targz
    rm -f $targz
    return $?
}

bitcoind_svc_install() {
    local svdir=/etc/sv/bitcoind
    mkdir -p $svdir
    cat <<EOF > $svdir/run.new
#!/bin/sh
exec chpst -u bitcoind $BITCOIN_HOME/$BITCOIN_CORE_VERSION_DIR_AARCH64/bin/bitcoind -conf=$BITCOIN_HOME/mainnet.conf 2>&1
EOF
    chmod +x $svdir/run.new
    test -f $svdir/run && diff $svdir/run $svdir/run.new
    if [ $? -ne 0 ]; then
        mv $svdir/run.new $svdir/run
        # don't touch the actual service if on manual control - the down file
        test -f $svdir/down && return 0
        sv -w 600 stop bitcoind || printf "ERROR: sv stop bitcoind failed\n" 1>&2
        sv start bitcoind || printf "ERROR: sv start bitcoind failed\n" 1>&2
    fi
    rm -f $svdir/run.new
}

bitcoin_cli_install() {
    mkdir -p /opt/bin
    cat <<EOF > /opt/bin/bitcoin-cli.sh
#!/bin/sh
set -eu
CLI=$BITCOIN_HOME/$BITCOIN_CORE_VERSION_DIR_AARCH64/bin/bitcoin-cli
DATA=/ssd/bitcoind/mainnet
CHAIN=main
exec doas -u bitcoind \$CLI -datadir=\$DATA -chain=\$CHAIN "\$@"
EOF
    chmod +x /opt/bin/bitcoin-cli.sh
}

bitcoin_apply() {
    bitcoin_core_bin_install || return 1
    bitcoind_svc_install || return 1
    bitcoin_cli_install || return 1
}