#!/bin/bash

# prcolors: Display all colors in a few different ways >>>
# TODO: change this to make it not just a few scripts smashed together

[ -z "$1" ] && 1=0
if [ $1 -eq '1' ];then
   # Taken from manjaro's bashrc >>>
   local fgc bgc vals seq0

   printf "Color escapes are %s\n" '\e[${value};...;${value}m'
   printf "Values 30..37 are \e[33mforeground colors\e[m\n"
   printf "Values 40..47 are \e[43mbackground colors\e[m\n"
   printf "Value  1 gives a  \e[1mbold-faced look\e[m\n\n"

   # foreground colors
   for fgc in {30..37}; do
      # background colors
      for bgc in {40..47}; do
         fgc=${fgc#37} # white
         bgc=${bgc#40} # black

         vals="${fgc:+$fgc;}${bgc}"
         vals=${vals%%;}

         seq0="${vals:+\e[${vals}m}"
         printf "  %-9s" "${seq0:-(default)}"
         printf " ${seq0}TEXT\e[m"
         printf " \e[${vals:+${vals+$vals;}}1mBOLD\e[m"
      done
      echo; echo
   done
   # <<<
elif [ $1 -eq '2' ];then
   # from base16shell >>>
   ansi_mappings=(
      Red               Green
      Yellow            Blue
      Magenta           Cyan
      White             Black
      Bright_Red        Bright_Green
      Bright_Yellow     Bright_Blue
      Bright_Magenta    Bright_Cyan
      Bright_White      Bright_Black
   )
   colors=(
      base00 base08
      base0B base0A
      base0D base0E
      base0C base05
      base03 base08
      base0B base0A
      base0D base0E
      base0C base07
      base09 base0F
      base01 base02
      base04 base06
   )
   for padded_value in `seq -w 0 21`; do
      color_variable="color${padded_value}"
      eval current_color=\$${color_variable}
      current_color=$(echo ${current_color//\//} | tr '[:lower:]' '[:upper:]') # get rid of slashes, and uppercase
      non_padded_value=$((10#$padded_value))
      base16_color_name=${colors[$non_padded_value]}
      current_color_label=${current_color:-unknown}
      ansi_label=${ansi_mappings[$non_padded_value]}
      block=$(printf "\x1b[48;5;${non_padded_value}m___________________________")
      foreground=$(printf "\x1b[38;5;${non_padded_value}m$color_variable")
      printf "%s %s %s %-30s %s\x1b[0m\n" $foreground $base16_color_name $current_color_label ${ansi_label:-""} $block
   done;
   #if [ $# -eq 1 ]; then
   #   printf "To restore current theme, source ~/.base16_theme or reopen your terminal\n"
   #fi
   # <<<
elif [ $1 -eq '3' ];then
   # Similar to above, but does 256-bit colors. >>>
   # Taken from this: https://github.com/romkatv/powerlevel10k#set-colors-through-Powerlevel10k-configuration-parameters
   for i in {0..255}; do
      print -Pn "%K{$i}  %k%F{$i}${(l:3::0:)i}%f " ${${(M)$((i%6)):#3}:+$'\n'}
   done
   # <<<
else
   cat <<-EOF
   Usage: prcolors <printing method number>
   1: Manjaro bashrc -- for checking text readability
   2: base26shell    -- for seeing the 16 set terminal colors
   3: 256            -- for testing 256 color output
   EOF
fi