vis

#!/usr/bin/env bash

get_and_sort_wal_colors () {

    # read wal colors in
    mapfile -t wal_colors < "$1"
    for i in "${!wal_colors[@]}"; do
        curr_color=${wal_colors[i]}
        r=$((16#${curr_color:1:2}))
        g=$((16#${curr_color:3:2}))
        b=$((16#${curr_color:5:2}))
        # use brightness scale for later sorting (from here http://alienryderflex.com/hsp.html)
        n=$(echo "sqrt(0.299*$r^2+0.114*$b^2+0.587*$g^2)" | bc -l)
        comp_c[$i]="$i $n"
    done
    
    IFS=$'\n' sorted_c=($(sort -n -k2,2 <<<"${comp_c[*]}")); unset IFS
    for element in "${sorted_c[@]}"; do
        idx=$(echo "$element" | cut -f1 -d" ")
        echo ${wal_colors[$idx]}
    done
}

# send colorscheme to $CONFIG/vis/colors/pywal
[ -f $XDG_CONFIG_HOME/vis/config ] && get_and_sort_wal_colors "$HOME/.cache/wal/colors" > "$XDG_CONFIG_HOME/vis/colors/pywal" || \
    [ -f $HOME/.config/vis/config ] && get_and_sort_wal_colors "$HOME/.cache/wal/colors" > "$HOME/.config/vis/colors/pywal"
PATH="/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin:/"

# run vis
vis