#!/bin/bash

function is_git {

		# check if current folder is git repository
		git_check_command=$(git -C $1 rev-parse > /dev/null 2>&1)
		if [[ $? != 0  ]]; then
				return 0
		fi

		return 1
}

function get_current_branch {
		echo $(git branch | grep "*" | awk '{print $NF}')
}

function auto_save_git {
		
		if [[ $(is_git ".") -ne 0 ]]; then
				echo "Current dir is not a git repository."
				return 1
		fi

		current_branch_name=get_current_branch

		timestamp=`date +%Y_%m_%d_%H_%M_%S`
		new_branch_name="git_auto_save/$HOST/$timestamp"
		
		# check if there is unsaved work
		changes=`git status --ignore-submodules=dirty | grep -E 'modified|deleted|new'`
		if [[ ! $changes ]]; then
				echo "No changes found."
				return
		fi

		# stash changes
		git stash

		# create new branch
		git checkout -b $new_branch_name
		git push origin $new_branch_name

		# apply stashed changes
		git stash apply

		# add changed files
		git add -u

		# commit changes
		git commit -m "git autosave from $timestamp"

		# push changes
		git push --set-upstream origin $new_branch_name

		# move back to initial branch
		git checkout $current_branch_name
		
}

function remove_auto_save {

		if [[ $(is_git ".") -ne 0 ]]; then
				echo "Current dir is not a git repository."
				return 1
		fi

		auto_save_branch=`git branch | grep "git_auto_save" | head -1 | awk '{print $FN}'`

		if [[ ! $auto_save_branch ]]; then
				echo "No auto save branch found."
				return
		fi

		auto_save_branch=${auto_save_branch:2}
		current_branch=$(get_current_branch)

		# if on autosave branch, move to master
		if [[ $current_branch == $auto_save_branch ]]; then
				echo "Currently on autosave path, moving to Master"
				git checkout master
		fi

		# remove local branch
		git branch -d $auto_save_branch

		# remove remote branch
		git push origin --delete $auto_save_branch


}

function remove_all_auto_saves {
	# remove all auto save branches
	
		if [[ $(is_git ".") -ne 0 ]]; then
				echo "Current dir is not a git repository."
				return 1
		fi


		
}