#!/bin/bash

#   I wrote this so I could see the color numbers I wanted to use when coding on a terminal.
# It runs threw all the basics, 8 colors for normal terminals and 256 for the ones that
# support it. The determination of support is the $TERM varible ending with '-256color'.

# shellcheck disable=SC2034

tput smcup   # save the terminal screen
clear

r(){ # Random color function just because it is fun to do!
	# -256color
	[[ $TERM = *256color ]] && NUM=$((1 + RANDOM % 256))

	# or not
	[[ $TERM != *256color ]] && NUM=$(( RANDOM % 8))
	
	echo -n "$(tput setaf $NUM)"
}

if [[ $TERM = *256color ]]
then
	# -256color
	echo "Foreground: tput setf #  (or 'setaf' for ANSI)"
	for((n=1; n<=256; n++))
	{
		echo -n "$(tput setaf $n)$n "
	}
	echo "$(r)Complete!"

	tput sgr0

	echo "Background: tput setb #  (or 'setaf' for ANSI)"
	for((n=1; n<=256; n++))
	{
		echo -n "$(tput setab $n)$n "
	}
	echo "$(r)Complete!"
else
	# 8 color
	echo "Foreground: tput setf #  (or 'setaf' for ANSI)"
	for((n=0; n<=7; n++))
	{
		echo -n "$(tput setaf $n)$n "
	}
	echo "$(r)Complete!"
	tput sgr0

	echo "Background: tput setb #  (or 'setaf' for ANSI)"
	for((n=0; n<=7; n++))
	{
		echo -n "$(tput setb $n)$n "
	}
	tput sgr0
	echo "$(r)Complete!"
fi
tput sgr0
echo "$(tput smul)Underline on: tput smul"
echo "$(tput rmul)Underline off: tput rmul"
echo "$(tput bold)Bold on: tput bold";tput sgr0
echo "$(tput dim)Dim on: tput dim"
echo "$(tput rev)Reverse palette: tput rev"
echo "$(tput sgr0)Revert all attribute changes: tput sgr0"

# shellcheck disable=SC2162
read -n 1 -p "Hit any key to continue" x
tput rmcup     # restore terminal screen