#! /bin/sh
#
# https://stackoverflow.com/questions/31278902/how-to-shallow-clone-a-specific-commit-with-depth-1

RELEASE=$1
MDATAFILE="/tmp/synclog.json"
REPOURL="https://git.FreeBSD.org/ports.git"

if ! fetch -q \
     -o ${MDATAFILE} https://raw.githubusercontent.com/DragonFlyBSD/DeltaPorts/master/docs/synclog.json; then
    echo "Error fetching synclog"
    exit 1
fi

if [ -z "${RELEASE}" ]; then
    RELEASE=$(jq -r '.current' ${MDATAFILE} )
fi

export RELEASE
COMMIT_ID=$(jq -r '.releases[] | select(.id == env.RELEASE) | ."base_commit"' ${MDATAFILE})

git init || exit 1
git remote add origin ${REPOURL} || exit 1
git fetch --depth 1 origin ${COMMIT_ID} || exit 1
git checkout FETCH_HEAD

for p in \
    $(jq -r '.releases[] | select(.id == env.RELEASE) | ."cherry-picks"[]' ${MDATAFILE})
do
    fetch -q -o - $p | git apply
    [ $? -eq 0 ] || exit
done