#!/usr/bin/env bash
set -euo pipefail

step="${1:-}"
if [[ -z "$step" ]]; then
  printf 'Usage: %s {+FLOAT|-FLOAT|reset}\n' "${0##*/}" >&2
  exit 2
fi

if ! command -v hyprctl >/dev/null 2>&1; then
  echo "hyprctl not found" >&2
  exit 1
fi

current=""
if command -v jq >/dev/null 2>&1; then
  if json="$(hyprctl -j getoption cursor:zoom_factor 2>/dev/null)"; then
    current="$(printf '%s' "$json" | jq -r '.float // .value // empty')"
  fi
fi

if [[ -z "$current" ]]; then
  current="$(hyprctl getoption cursor:zoom_factor 2>/dev/null | sed -n 's/.*float:[[:space:]]*\([-0-9.]*\).*/\1/p' | head -n1)"
fi

if [[ -z "$current" ]]; then
  current="1.0"
fi

if [[ "$step" == "reset" ]]; then
  next="1.0"
else
  next="$(awk -v c="$current" -v s="$step" 'BEGIN { printf "%.3f", c + s }')"
  next="$(awk -v n="$next" 'BEGIN {
    if (n < 1.0) n = 1.0;
    if (n > 5.0) n = 5.0;
    printf "%.3f", n;
  }')"
fi

hyprctl keyword cursor:zoom_factor "$next" >/dev/null
hyprctl notify -1 1200 "rgb(a6da95)" "Zoom: ${next}" >/dev/null 2>&1 || true