#!/bin/sh
set -ex
USER=u
DIR=src/anonymous-ssh
HOST=localhost
SSH_ID=~/.ssh/id_ed25519

get_sshfp()
{
    (
        key="$1"
        r="${2:-.}"
        dns=$(mktemp) || exit
        trap 'rm -rf "$dns"' EXIT

        ssh-keygen -r "$r" -f "$key" > "$dns"
        exec < "$dns"
        while read line
        do
            set -- $line
            if [ "$3 $5" = "SSHFP 2" ]
            then
                echo "$line"
                break
            fi
        done
    )
}

make_test_commit()
{
    newfile=newfile.$(date -Ins|tr -d :)
    touch "$newfile"
    git add "$newfile"
    git commit -m "$newfile"
}

[ -e "$SSH_ID" ] || ssh-keygen -t ed25519 -f "$SSH_ID" -P ''

git_namespace=$(set -- $(get_sshfp "$SSH_ID") && echo $6)

ssh -o NoHostAuthenticationForLocalhost=yes $USER@$HOST -- test || true
[ ! -e anonymous-ssh ] || rm -rf anonymous-ssh
export GIT_SSH_COMMAND="ssh -o NoHostAuthenticationForLocalhost=yes -i $SSH_ID"
git clone -v ${USER}@${HOST}:${DIR}
cd anonymous-ssh

make

git pull --ff-only
make_test_commit
git push -f
make_test_commit
git push
git log -n4
git pull --ff-only
git log -n4
git push

# branch=$(git branch -q --show-current)
# forkname=origin-myfork
# ns_branch=refs/namespaces/$git_namespace/refs/heads/$branch
# git remote add -m "$ns_branch" "$forkname" $(git remote get-url origin)
# git push "$forkname"
# git pull "$forkname" --ff-only "$branch"
exit