jj-gcommit

#!/usr/bin/env bash
# stolen from https://gist.github.com/thoughtpolice/8f2fd36ae17cd11b8e7bd93a70e31ad6

set -euo pipefail

NAME=$(jj config get user.name)
MAIL=$(jj config get user.email)
USE_SIGNOFF=$(jj config get repo.use-signoff || echo false)
CID=$(jj log --no-graph -r @ -T "change_id" | sha256sum | head -c 40)

SIGNSTR="Signed-off-by: ${NAME} <${MAIL}>"
CHGSTR="Change-Id: I${CID}"

contents=$(<"$1")
readarray -t lines <<<"$contents"

body=''
last=''
for x in "${lines[@]}"; do
  [[ "$x" =~ ^"JJ:" ]] && continue
  [[ "$x" =~ ^"Change-Id:" ]] && continue
  [[ $USE_SIGNOFF != false && "$x" =~ ^"$SIGNSTR" ]] && continue

  [[ "$x" == '' ]] && [[ "$last" == '' ]] && continue

  last="$x"
  body+=$"$x\n"
done

[[ $USE_SIGNOFF != false ]] && body+="$SIGNSTR\n"
body+="$CHGSTR\n"

t=$(mktemp)
echo -n "$body" > "$t"
mv "$t" "$1"

$VISUAL "$1"
ret=$?

if [[ "$(grep -v '^JJ:' "$1")" =~ ^[[:space:]]*$ ]]; then
    echo 'empty commit message!'
    exit 1
fi

exit $ret