funcs

#! /bin/bash

# The intention is for copy-pasting what you need out of this file, not really
# for it to be used as a library or include file

ESC="\0033["
OSC="\0033]"
BEL="\0007"
SEP=";"
ELLIPSIS="…"
gx=0
gy=0
mx=0
my=0
sx=0
sy=0
n=1

function gotoXY() {
    x=$1; y=$2
	echo -en "${ESC}$((y))${SEP}$((x))H"
}

# gotoXY 1 1; echo -n "1"
# gotoXY 1 2; echo -n "|"
# gotoXY 1 3; echo -n "|"
# gotoXY 2 2; echo -n "2"
# gotoXY 3 3; echo -n "3"

function moveXY() {
	mx=$1; my=$2
	if [[ $mx -lt 0 ]]; then
		echo -en "${ESC}$((-mx))D"
	elif [[ $mx -gt 0 ]]; then
		echo -en "${ESC}$((mx))C"
	fi

	if [[ $my -lt 0 ]]; then
		echo -en "${ESC}$((-my))A"
	elif [[ $my -gt 0 ]]; then
		echo -en "${ESC}$((my))B"
	fi
}

# moveXY 0 1; echo -n "*"
# moveXY 0 1; echo -n "*"
# moveXY 0 1; echo -n "*"
# moveXY 1 0; echo -n "*"  
# moveXY 1 0; echo -n "*"
# moveXY 1 0; echo -n "*"


function moveUp() {
	n="${1:-1}"
	echo -en "${ESC}${n}A"
}

#echo -n "Here"; moveUp 3; echo -n "Up 3"

function moveDown() {
	n="${1:-1}"
	echo -en "${ESC}${n}B"
}

function moveForward() {
	n="${1:-1}"
	echo -en "${ESC}${n}C"	
}

function moveBackward() {
	n="${1:-1}"
	echo -en "${ESC}${n}D"	
}

function gotoLeft() {
	echo -en "${ESC}1G"
}

#echo -n "Hello"; gotoLeft; echo -n "h"

# moveUp; moveUp; echo -n "Boo"
# moveDown; moveDown; echo -n "Boo"

function savePosition() {
	echo -en "${ESC}s"
}

function restorePosition() {
	echo -en "${ESC}u"	
}

# savePosition; gotoLeft; echo -n "Left"; restorePosition; echo "More"

function setXY() {
    exec < /dev/tty
    local _oldstty=$(stty -g)
    stty raw -echo min 0
    echo -en "\033[6n" > /dev/tty
    IFS=';' read -r -d R -a pos
    stty $_oldstty
    sx=$((${pos[1]} - 1))
    sy=$((${pos[0]:2}))
}

function nextLine() {
	echo -en "${ESC}E"
}

function previousLine() {
	echo -en "${ESC}F"	
}

function hideCursor() {
	echo -en "${ESC}?25l"
}

function showCursor() {
	echo -en "${ESC}?25h"
}

function disableWordWrap() {
    echo -ne "${ESC}[?7l"
}

function enableWordWrap() {
    echo -ne "${ESC}[?7h"
}


# sleep 1; previousLine; sleep 1; previousLine; 
# sleep 1; hideCursor; sleep 1; showCursor; echo -n "Back"

function eraseEndLine() {
	echo -en "${ESC}K"	
}

function eraseStartLine() {
	echo -en "${ESC}1K"
}

function eraseLine() {
	echo -en "${ESC}2K"	
}

function eraseDown() {
	echo -en "${ESC}J"
}

function eraseUp() {
	echo -en "${ESC}1J"
}

function eraseScreen() {
	echo -en "${ESC}2J"
}

function scrollUp() {
	echo -en "${ESC}S"
}

function scrollDown() {
	echo -en "${ESC}T"
}

function link() { # $1 url, $2 text 
	echo -en "${OSC}8${SEP}${SEP}$1${BEL}$2${OSC}8${SEP}${SEP}${BEL}"
}

# link https://www.google.com Google

function enterAlternateScreen() {
	echo -en "${ESC}?1049h"
}

function exitAlternateScreen() {
	echo -en "${ESC}?1049l"
}

# sleep 1; enterAlternateScreen; echo "Alternate screen!"; sleep 1; exitAlternateScreen; 



# TODO: 
# 2. update shui to use these functions (copy those needed in)
# 3. fix shui to not write lines longer than the width of terminal

savePosition; hideCursor; gotoXY 10000 10000; setXY; restorePosition; showCursor
echo "screen width: $sx, height: $sy"