#!/bin/bash

# color definitions
C_RESET=$'\e[0m'
C_GRAY=$'\e[90m'
C_CYAN=$'\e[36m'
C_WHITE=$'\e[97m'
C_BYELLOW_BOLD=$'\e[1;93m'
C_BWHITE_BOLD=$'\e[1;97m'
C_DIMYELLOW_ITALIC=$'\e[3;93m'

# Gruvbox Dark Hard palette
C_RESET=$'\e[0m'
C_GRAY=$'\e[38;2;102;92;84m'          # gray
C_CYAN=$'\e[38;2;125;174;163m'        # muted blue
C_WHITE=$'\e[38;2;235;219;178m'       # light foreground
C_BYELLOW_BOLD=$'\e[1;38;2;250;189;47m'
C_BWHITE_BOLD=$'\e[1;38;2;235;219;178m'
C_DIMYELLOW_ITALIC=$'\e[3;38;2;215;153;33m'  # yellow

C_AQUA=$'\e[38;2;142;192;124m'

LOGO="              $C_GRAY|$C_RESET
$C_CYAN    /\\ /\\     $C_GRAY|$C_RESET
$C_CYAN   // \\  \\    $C_GRAY|$C_RESET
$C_CYAN  //   \\  \\   $C_GRAY|$C_RESET
$C_CYAN ///    \\  \\  $C_GRAY|$C_RESET
$C_CYAN //      \\  \\ $C_GRAY|$C_RESET
$C_CYAN          \\   $C_GRAY|$C_RESET
              $C_GRAY|$C_RESET"

LOGO_ARCH="                $C_GRAY|$C_RESET
$C_CYAN       /\\       $C_GRAY|$C_RESET
$C_CYAN      /  \\      $C_GRAY|$C_RESET
$C_CYAN     /    \\     $C_GRAY|$C_RESET
$C_CYAN    /      \\    $C_GRAY|$C_RESET
$C_CYAN   /   ,,   \\   $C_GRAY|$C_RESET
$C_CYAN  /   |  |   \\  $C_GRAY|$C_RESET
$C_CYAN /_-''    ''-_\\ $C_GRAY|$C_RESET
                $C_GRAY|$C_RESET"

LOGO_slash="                $C_GRAY/$C_RESET
$C_CYAN       /\\       $C_GRAY/$C_RESET
$C_CYAN      /  \\      $C_GRAY/$C_RESET
$C_CYAN     /    \\     $C_GRAY/$C_RESET
$C_CYAN    /      \\    $C_GRAY/$C_RESET
$C_CYAN   /   ,,   \\   $C_GRAY/$C_RESET
$C_CYAN  /   |  |   \\  $C_GRAY/$C_RESET
$C_CYAN /_-''    ''-_\\ $C_GRAY/$C_RESET
                $C_GRAY/$C_RESET"
LOGO_VOID="               $C_GRAY/$C_RESET
$C_CYAN     _______   $C_GRAY/$C_RESET
$C_CYAN  _ \______ \\  $C_GRAY/$C_RESET
$C_CYAN | \  ___  \ | $C_GRAY/$C_RESET
$C_CYAN | | /   \ | | $C_GRAY/$C_RESET
$C_CYAN | | \___/ | | $C_GRAY/$C_RESET
$C_CYAN | \______ \_| $C_GRAY/$C_RESET
$C_AQUA  \\_______\    $C_GRAY/$C_RESET
               $C_GRAY/$C_RESET"
LOGO_DEVUAN="               $C_GRAY/$C_RESET
$C_CYAN  ..:::.       $C_GRAY/$C_RESET
$C_CYAN     ..-==-    $C_GRAY/$C_RESET
$C_CYAN         .+#:  $C_GRAY/$C_RESET
$C_CYAN          =@@  $C_GRAY/$C_RESET
$C_CYAN       :+%@#:  $C_GRAY/$C_RESET
$C_CYAN .:=+#@@%*:    $C_GRAY/$C_RESET
$C_CYAN #@@@#=:       $C_GRAY/$C_RESET
               $C_GRAY/$C_RESET"

LOGO_GENTOO="             $C_GRAY/$C_RESET
$C_WHITE  _-----_    $C_GRAY/$C_RESET
$C_WHITE (       \   $C_GRAY/$C_RESET
$C_WHITE \    0   \  $C_GRAY/$C_RESET
$C_WHITE  \        ) $C_GRAY/$C_RESET
$C_WHITE  /      _/  $C_GRAY/$C_RESET
$C_WHITE (     _-    $C_GRAY/$C_RESET
$C_WHITE \____-      $C_GRAY/$C_RESET
             $C_GRAY/$C_RESET"

# all the info fields
USER=$USER
HOSTNAME=$(cat /etc/hostname)
CPU_MODELNAME=$(cat /proc/cpuinfo | awk -F ":" '/model name/ {print $2}' | awk -F " " '{print $3}' | head -1)
CPU_THREADS_NUM=$(nproc)

RAM_TOTAL=$(awk '/MemTotal:/ { printf "%.1f\n", $2 / 1000000 }' /proc/meminfo)
RAM_FREE=$(awk '/MemAvailable:/ { printf "%.1f\n", $2 / 1000000 }' /proc/meminfo)
RAM="$(awk -v total="${RAM_TOTAL}" -v free="${RAM_FREE}" 'BEGIN { print (total - free) }') G / ${RAM_TOTAL} G"

DISTRO="$(source /etc/os-release && echo $NAME)"

APK_INSTALLED_PACKAGES="apk list --installed"
INSTALLED_PACKAGES_COUNT=$($APK_INSTALLED_PACKAGES | wc -l)

format_duration() {
    local seconds=$1
    local days=$((seconds / 86400))
    local hours=$((seconds % 86400 / 3600))
    local minutes=$((seconds % 3600 / 60))
    local result=""

    (( days > 0 )) && result+="${days}d "
    (( hours > 0 )) && result+="${hours}h "
    (( minutes > 0 )) && result+="${minutes}m"

    printf '%s' "${result% }"
}

installed="Thu Nov  5 05:00:00 PM CET 2026" # Alpine Linux install date
installed_ts=$(date -d "$installed" +%s)
now_ts=$(date +%s)
TIME_SINCE_LAST_REINSTALL=$(format_duration "$((now_ts - installed_ts))")

uptime_seconds=$(awk '{ print int($1) }' /proc/uptime)
UPTIME=$(format_duration "$uptime_seconds")

KERNEL=$(uname -r)

if [ -n "$HYPRLAND_INSTANCE_SIGNATURE" ]; then
    WM="hyprland"
elif [ -n "$SWAYSOCK" ]; then
    WM="sway"
else
    WM="unknown"
fi

TERM=$TERM
SHELL="${SHELL##*/}"


horizontal_n=$((${#USER} + ${#HOSTNAME} + 3))
horizontal_separator_char="-"
HORIZONTAL_SEPARATOR=$(printf '%*s' "$horizontal_n" ' ' | tr ' ' "$horizontal_separator_char")

value=$(grep -E '^gtk-theme-name=' "$HOME/.config/gtk-4.0/settings.ini")
value=${value#*=}
value=${value//-/ }
THEME="$value"

# -----
# output login

# convert the logo into an array of "lines" (strings)
mapfile -t LOGO_LINES <<< "$LOGO"

# array of strings as well for the info fields
INFO_LINES=(
"${C_CYAN}$USER${C_GRAY} @ ${C_WHITE}$HOSTNAME${C_RESET}"
${C_DIMYELLOW_ITALIC}$HORIZONTAL_SEPARATOR${C_RESET}
# "${C_CYAN}cpu   ${C_DIMYELLOW_ITALIC} : $CPU_MODELNAME ($CPU_THREADS_NUM threads)${C_RESET}"
"${C_CYAN}distro${C_DIMYELLOW_ITALIC} : $DISTRO${C_RESET}"
"${C_CYAN}theme ${C_DIMYELLOW_ITALIC} : $THEME${C_RESET}"
#"${C_CYAN}ram   ${C_DIMYELLOW_ITALIC} : $RAM${C_RESET}"
"${C_CYAN}age   ${C_DIMYELLOW_ITALIC} : $TIME_SINCE_LAST_REINSTALL${C_RESET}"
"${C_CYAN}pkgs  ${C_DIMYELLOW_ITALIC} : $INSTALLED_PACKAGES_COUNT${C_RESET}"
# "${C_CYAN}uptime${C_DIMYELLOW_ITALIC} : $UPTIME${C_RESET}"
#"${C_CYAN}kernel${C_DIMYELLOW_ITALIC} : $KERNEL${C_RESET}"
"${C_CYAN}wm    ${C_DIMYELLOW_ITALIC} : $WM${C_RESET}"
"${C_CYAN}term  ${C_DIMYELLOW_ITALIC} : $TERM${C_RESET}"
"${C_CYAN}shell ${C_DIMYELLOW_ITALIC} : $SHELL${C_RESET}"
)

for i in "${!LOGO_LINES[@]}"; do
    # 15 chars is the length of the logo
    printf "%-15s" "${LOGO_LINES[$i]}"
    # only print info if it exists for this line
    [ $i -lt ${#INFO_LINES[@]} ] && printf " %s" "${INFO_LINES[$i]}"
    printf "\n"
done
printf "${C_RESET}"