#!/usr/bin/env sh


# read control file and initialize variables

ScrDir=`dirname "$(realpath "$0")"`
waybar_dir="${XDG_CONFIG_HOME:-$HOME/.config}/waybar"
modules_dir="$waybar_dir/modules"
conf_file="$waybar_dir/config.jsonc"
conf_ctl="$waybar_dir/config.ctl"

readarray -t read_ctl < $conf_ctl
num_files="${#read_ctl[@]}"
switch=0


# update control file to set next/prev mode

if [ $num_files -gt 1 ]
then
    for (( i=0 ; i<$num_files ; i++ ))
    do
        flag=`echo "${read_ctl[i]}" | cut -d '|' -f 1`
        if [ $flag -eq 1 ] && [ "$1" == "n" ] ; then
            nextIndex=$(( (i + 1) % $num_files ))
            switch=1
            break;

        elif [ $flag -eq 1 ] && [ "$1" == "p" ] ; then
            nextIndex=$(( i - 1 ))
            switch=1
            break;
        fi
    done
fi

if [ $switch -eq 1 ] ; then
    update_ctl="${read_ctl[nextIndex]}"
    export reload_flag=1
    sed -i "s/^1/0/g" $conf_ctl
    awk -F '|' -v cmp="$update_ctl" '{OFS=FS} {if($0==cmp) $1=1; print$0}' $conf_ctl > $waybar_dir/tmp && mv $waybar_dir/tmp $conf_ctl
fi


# overwrite config from header module

export set_sysname=`hostnamectl hostname`
export w_position=`grep '^1|' $conf_ctl | cut -d '|' -f 3`

export w_height=`grep '^1|' $conf_ctl | cut -d '|' -f 2`
if [ -z $w_height ] ; then
    y_monres=`cat /sys/class/drm/*/modes | head -1 | cut -d 'x' -f 2`
    export w_height=$(( y_monres*2/100 ))
fi

export i_size=$(( w_height*6/10 ))
if [ $i_size -lt 12 ] ; then
    export i_size="12"
fi

export i_theme=`gsettings get org.gnome.desktop.interface icon-theme | sed "s/'//g"`
export i_task=$(( w_height*6/10 ))
if [ $i_task -lt 16 ] ; then
    export i_task="16"
fi

envsubst < $modules_dir/header.jsonc > $conf_file


# module generator function

gen_mod()
{
    local pos=$1
    local col=$2
    local mod=""

    mod=`grep '^1|' $conf_ctl | cut -d '|' -f ${col}`
    mod="${mod//(/"custom/l_end"}"
    mod="${mod//)/"custom/r_end"}"
    mod="${mod//[/"custom/sl_end"}"
    mod="${mod//]/"custom/sr_end"}"
    mod="${mod//\{/"custom/rl_end"}"
    mod="${mod//\}/"custom/rr_end"}"
    mod="${mod// /"\",\""}"

    echo -e "\t\"modules-${pos}\": [\"custom/padd\",\"${mod}\",\"custom/padd\"]," >> $conf_file
    write_mod=`echo $write_mod $mod`
}


# write positions for modules

echo -e "\n\n// positions generated based on config.ctl //\n" >> $conf_file
gen_mod left 4
gen_mod center 5
gen_mod right 6


# copy modules/*.jsonc to the config

echo -e "\n\n// sourced from modules based on config.ctl //\n" >> $conf_file
echo "$write_mod" | sed 's/","/\n/g ; s/ /\n/g' | awk -F '/' '{print $NF}' | awk -F '#' '{print $1}' | awk '!x[$0]++' | while read mod_cpy
do

#    case ${w_position}-$(grep -E '"modules-left":|"modules-center":|"modules-right":' $conf_file | grep "$mod_cpy" | tail -1 | cut -d '"' -f 2 | cut -d '-' -f 2) in
#        top-left) export mod_pos=1;;
#        top-right) export mod_pos=2;;
#        bottom-right) export mod_pos=3;;
#        bottom-left) export mod_pos=4;;
#    esac

    if [ -f $modules_dir/$mod_cpy.jsonc ] ; then
        envsubst < $modules_dir/$mod_cpy.jsonc >> $conf_file
    fi
done

cat $modules_dir/footer.jsonc >> $conf_file


# generate style and restart waybar

$ScrDir/wbarstylegen.sh