Hacky maximized, minimized, fullscreen window state for waybar. Put the window-state widget right after the hyprland/window widget. Optionally style them the same so they appear as the same widgget.

waybar.config.jsonc

"custom/window-state": {
    "exec": "~/.config/waybar/scripts/window-state.sh",
    "interval": 1,
    "format": "{text}",
    "return-type": "json",
  },

window-state.sh

#!/bin/bash

window_info=$(hyprctl activewindow -j)

is_floating=$(echo "$window_info" | jq -r '.floating')
fullscreen_state=$(echo "$window_info" | jq -r '.fullscreen')

state=""

if [[ "$is_floating" == "true" ]]; then
    state="[Floating]"
fi

if [[ "$fullscreen_state" == "2" ]]; then
    state="[Fullscreen]"
elif [[ "$fullscreen_state" == "1" ]]; then
    state="[Maximized]"
fi

echo "{\"text\": \"$state\" }"