#!/bin/sh

set -e

git_branch() {
    git rev-parse --symbolic-full-name --abbrev-ref HEAD
}

[ -d .git ] || {
    echo "error: not a git repository"
    exit 1
}

[ -d .idea ] || {
    echo "error: not a jetbrains repository"
    exit 1
}

PREFETCH_HOOK=.git/hooks/prefetch
CUR_BRANCH=$(git_branch)
TARGET_BRANCH="$CUR_BRANCH"

while getopts b: option
do
    case "${option}"
    in
        b)
            TARGET_BRANCH=${OPTARG}
            ;;

        *)
            :
            ;;
    esac
done

if [ "$CUR_BRANCH" != "$TARGET_BRANCH" ]; then
    echo "new target branch: $TARGET_BRANCH"
fi

git add .
git reset --hard
[ -x "$PREFETCH_HOOK" ] && "./$PREFETCH_HOOK"
git fetch -a dev
if [ "$CUR_BRANCH" != "$TARGET_BRANCH" ]; then
    git checkout "$TARGET_BRANCH" --
fi
git reset --hard dev/$TARGET_BRANCH
#git pull dev $TARGET_BRANCH

echo "current branch: $(git_branch)"