#!/usr/bin/env bash

#

# unstage the selected staged file

# or reset the commit to certain point

#

# @params

# Globals

# ${mydir}: current directory of the script

# ${reset_type}: reset type, modified files or commit

# ${reset_option}: git reset flag, --mixed | --soft | --hard

# ${selected_files}: selected file to reset

# ${selected_commit}: selected commit to reset

# ${confirm}: confirmation status of the user

# Arguments

# -h|--help: show help message and quit

# -c|--commit: reset commit

# -S|--soft: use --soft flag

# -H|--hard: use --hard flag

# -y|--yes: confirm action by default and skip confirmation

set -e

set -f

mydir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

source "${mydir}"/../helper/set_variable.sh

source "${mydir}"/../helper/get_confirmation.sh

source "${mydir}"/../helper/git_query.sh

function usage() {

echo -e "Usage: dotbare freset [-h] [-c] [-S] [-H] [-y] ...

Reset(unstage) the selected staged files.

Reset the HEAD to certain commits by using -c flag.

Default: unstage the selected files.

Optional arguments:

-h, --help\t\tshow this help message and exit.

-c, --commit\t\treset HEAD to certain commit, default --mixed flag, reset HEAD to certain commit put all changes into modified state.

-S, --soft\t\treset commit using --soft flag, reset HEAD to certain commit without modify working tree.

-H, --hard\t\treset commit using --hard flag, reset HEAD to certain commit discard all changes from the working tree.

-y, --yes\t\tacknowledge all actions that will be taken and skip confirmation."

}

reset_option="--mixed"

reset_type="modified"

selected_files=()

confirm=""

selected_commit=""

while [[ "$#" -gt 0 ]]; do

case "$1" in

-c|--commit)

reset_type="commit"

shift

;;

-S|--soft)

reset_option="--soft"

shift

;;

-H|--hard)

reset_option="--hard"

shift

;;

-y|--yes)

confirm='y'

shift

;;

-h|--help)

usage

exit 0

;;

*)

echo "Invalid option: $1" >&2

usage

exit 1

;;

esac

done

if [[ "${reset_type}" == "commit" ]]; then

selected_commit=$(get_commit "select the target commit")

[[ -z "${selected_commit}" ]] && exit 1

[[ -z "${confirm}" ]] && confirm=$(get_confirmation "Reset HEAD to ${selected_commit} ${reset_option}?")

[[ "${confirm}" != 'y' ]] && exit 1

git --git-dir="${DOTBARE_DIR}" --work-tree="${DOTBARE_TREE}" reset "${selected_commit}" "${reset_option}"

else

while IFS= read -r line; do

selected_files+=("${line}")

done < <(get_modified_file 'select files to unstage' 'staged')

[[ "${#selected_files[@]}" -eq 0 ]] && exit 1

git --git-dir="${DOTBARE_DIR}" --work-tree="${DOTBARE_TREE}" reset "${selected_files[@]}"

fi