#!/bin/bash

colors=(black red green yellow blue purple cyan white)
declare -A COL BG TEXT

for c in ${!colors[@]}
do
    COL[${colors[$c]}]="$(tput setaf $c)"
    BG[${colors[$c]}]="$(tput setab $c)"
done
unset c

COL[0]="$(tput sgr0)"


TEXT[underline]="$(tput smul)"
TEXT[no-underline]="$(tput rmul)"
TEXT[blink]="$(tput blink)"
TEXT[bold]="$(tput bold)"
TEXT[dim]="$(tput dim)"
TEXT[italic]="$(tput sitm)"
TEXT[reverse]="$(tput rev)"

COL_show()
{
	for b in {0..7}; do
		for c in {0..7};do
			tput setaf $c
			tput setab $b
			printf $c
			tput sgr0
		done
		echo
	done
}


COL.show()
{
	cap="${1:-8}"
#	declare -p cap

	if [ "$cap" = 8 ]; then
		for c in ${colors[@]}; do
			echo -e ${COL[$c]}\${COL[$c]}${COL[0]}"\t"${BG[$c]}\${BG[$c]}${COL[0]}
		done

	elif [ "$cap" = 256 ]; then
		echo ${COL[0]}" 0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15"
		for n in {0..15}; do
			printf "`tput setab $n`%s`tput sgr0`" "   "
		done
		echo
		echo 16
		for n in {0..5}; do
			local from=$(($n * 36 + 16)) to=$(($n * 36 + 16 + 35))
#			declare -p from to
			printf '%3s' $from
			for nn in $(seq $from $to); do
				printf "`tput setab $nn`%s`tput sgr0`" "  "
			done
			echo $to
		done
		echo
		echo 24 greys from 231 + '<1 to 24>'
		for n in {232..256}; do
			printf "`tput setab $n`%s`tput sgr0`" "  "
		done
		echo
	fi
}

COL.greys(){ printf $((232+$1)); }
COL.rgb(){ echo $(( 16 + ($1*36) + ($2*6) + ($3) )); }

COL.square(){ printf "${BG[$1]}%s" '  '; }
# COL.gradient (R|G|B) | ( R G | R B | G R | G B | B R | B G )
COL.gradient()
{
	echo $#
	local R=0 G=0 B=0 n a b
	case $# in

	1) for n in {0..5};do
		[[ $1 = R ]] && R=$n
		[[ $1 = G ]] && G=$n
		[[ $1 = B ]] && B=$n
		COL.square $R$G$B
	done
	echo ${COL[0]}
	;;

	2) for a in {0..5};do
		for b in {0..5};do
			[[ $1 = R ]] && R=$b
			[[ $2 = R ]] && R=$a
			[[ $1 = G ]] && G=$b
			[[ $2 = G ]] && G=$a
			[[ $1 = B ]] && B=$b
			[[ $2 = B ]] && B=$a
			COL.square $R$G$B
		done
		echo ${COL[0]}
	done
	echo ${COL[0]}
	;;

	*) echo "help" ;;

	esac
}

# RGB indexed colors for 256 colors terminals
for r in {0..5}; do
	for g in {0..5}; do
		for b in {0..5}; do
			COL[$r$g$b]="$(tput setaf `COL.rgb $r $g $b`)"
			BG[$r$g$b]="$(tput setab `COL.rgb $r $g $b`)"
		done
	done
done
unset r g b

# Greys
for g in {0..23}; do
	COL[grey$g]="$(tput setaf `COL.greys $g`)"
	BG[grey$g]="$(tput setab `COL.greys $g`)"
done

export COL BG TEXT # 'COL.show' 'COL.greys' 'COL.rgb' 'COL.square' 'COL.gradient'














#css()
#{
#	[[ ! -z $color ]] && printf ${COL[$color]}
#	[[ ! -z $background ]] && printf ${BG[$background]}
#	[[ ! -z $style ]] && printf ${COL[$style]}
##	echo CSS
##	printf ${COL[reset]}
#}
#
#style()
#{
#	local color background _style
#	for kv in "$@";do
#		case $kv in
#			color=*) color=${kv} ;;
#		esac
#	done
#}

#declare -A class=()

#color=red
#class[title]=$(color=blue background=white style=underline css)

#$(h1 class=title)Coucou$(/h1)
#echo "`css`
#Normal text ${class[title]}TITLE STYLE${COL[reset]}`css` and normal again
#
#"