#!/bin/bash
cd $(dirname $0)

# COLORS
source ./asides/color.sh

KEY_PHRASE="#hugogogo#"
HERE=$(pwd)
D_CONFIG_FILES="config_files"
ASK_INSTALL="y"

# create those folders if necessary :
mkdir -p ~/.vim/templates
mkdir -p ~/.vim/swapfiles


# receive 1 argument : absolute path to config file
function save_bak
{
	local file_to="$1"
	local file_name="$(basename $1)"
	local path_file_to="$(dirname $1)"

	number=0
	while [ -f $file_to.hubak$number ]
	do
		((number+=1))
	done
	echo -en $YELLOW"in "
	echo -en $CYAN"\"$path_file_to/\""
	echo -en $YELLOW", saving "
	echo -en $CYAN"\"$file_name\""
	echo -en $YELLOW" as "
	echo -en $CYAN"\"$file_name.hubak$number\""$ENDCO"\n"
	mv $file_to $file_to.hubak$number
}

# receives 1 argument : "absolute path to config file"
function install
{
	local file_to="$1"
	local file_name="$(basename $1)"
	local path_file_to="$(dirname $1)"

	local create_sym=1

	if [ -h $file_to ] && [ ! -e $file_to ]
	then
		echo -en $B_RED"$file_to is a broken symlink"$ENDCO"\n"
		save_bak $file_to
	elif [ -e $file_to ]
	then
		if [ ! "$(realpath "$file_to")" = "$HERE/config_files/$file_name" ]
		then
			echo -en $YELLOW"$file_to exist but is not the right file"$ENDCO"\n"
			save_bak $file_to
		else
			create_sym=0
			echo -en $YELLOW"$file_to is already the right file"$ENDCO"\n"
		fi
	else
		echo -en $YELLOW"$file_to doesn't exist"$ENDCO"\n"
	fi

	if [ $create_sym -eq 1 ]
	then
		echo -en $YELLOW"create symlink of "
		echo -en $CYAN"\"$file_name\""
		echo -en $YELLOW" in "
		echo -en $CYAN"\"$path_file_to\""$ENDCO"\n"
		ln -s $HERE/$D_CONFIG_FILES/$file_name $file_to
	fi
}

# receives 1 argument : a chain of acceptables uniques characters (ex: yn)
function user_choice
{
	while true; do
		read -n 1 -s choice
		if [[ $choice == [$1] ]]; then
			# the function need to run in a command substitution, and this line gives the result
			echo $choice
			return
		fi
	done
}


# Ask what to install
echo "
	(a) Do you want to config all programs: git, screen, zsh, and vim ?
	(c) Or do you want to choose for each of them ?

	validate by typing the character in parenthesis (-) :
	"
ASK_INSTALL=$(user_choice "ac")

CONFIG_GIT=n
CONFIG_SCREEN=n
CONFIG_ZSH=n
CONFIG_VIM=n
if [ "$ASK_INSTALL" = "a" ]; then
	CONFIG_GIT=y
	CONFIG_SCREEN=y
	CONFIG_ZSH=y
	CONFIG_VIM=y
fi



# config each program :

if [ "$ASK_INSTALL" = "c" ]; then
	echo "
	do you want to config git ?
	(y) Yes
	(n) No
	"
	CONFIG_GIT=$(user_choice "yn")
fi
if [ "$CONFIG_GIT" = "y" ]; then
	echo "config git"
	echo -e $MAGENTA"make vim default editor for git"$ENDCO
	git config --global core.editor "vim"
else
	echo "skip git"
fi

if [ "$ASK_INSTALL" = "c" ]; then
	echo "
	do you want to config screen ?
	(y) Yes
	(n) No
	"
	CONFIG_SCREEN=$(user_choice "yn")
fi
if [ "$CONFIG_SCREEN" = "y" ]; then
	echo "config screen"
	install "$HOME/.screenrc"
else
	echo "skip screen"
fi

if [ "$ASK_INSTALL" = "c" ]; then
	echo "
	do you want to config zsh ?
	(y) Yes
	(n) No
	"
	CONFIG_ZSH=$(user_choice "yn")
fi
if [ "$CONFIG_ZSH" = "y" ]; then
	echo "config zsh"
	install "$HOME/.zshrc"
else
	echo "skip zsh"
fi

if [ "$ASK_INSTALL" = "c" ]; then
	echo "
	do you want to config vim ?
	(y) Yes
	(n) No
	"
	CONFIG_VIM=$(user_choice "yn")
fi
if [ "$CONFIG_VIM" = "y" ]; then
	echo "config vim"
	install "$HOME/.vimrc"
	install "$HOME/.vim/templates/skeleton_colors.h"
	install "$HOME/.vim/templates/skeleton_tests.hpp"
	install "$HOME/.vim/templates/skeleton.cpp"
	install "$HOME/.vim/templates/skeleton.hpp"
	install "$HOME/.vim/templates/skeleton_main.cpp"
	install "$HOME/.vim/templates/skeleton_makefile"
else
	echo "skip vim"
fi