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

COLUMN_WIDTH="${COLUMN_WIDTH:-0.5}"   # match your hyprscrolling config
ICON="${ICON:-󰓒}"                    # nerd-font icon

# Focused monitor id (numeric) + its active workspace id (numeric)
read -r focused_mon_id focused_ws_id < <(
  hyprctl -j monitors | jq -r '
    .[] | select(.focused==true) | "\(.id) \(.activeWorkspace.id)"
  '
)

# Fallback if something went wrong (shouldn't happen)
focused_mon_id="${focused_mon_id:-0}"
focused_ws_id="${focused_ws_id:-1}"

# Count mapped windows on the focused monitor + its active workspace.
win_count="$(
  hyprctl -j clients | jq --argjson ws "$focused_ws_id" --argjson mid "$focused_mon_id" '
    [ .[]
      | select(.mapped == true)
      | select(.workspace.id == $ws)
      | select(.monitor == $mid)
    ] | length
  '
)"

# floor(1 / COLUMN_WIDTH) using awk (portable)
max_visible="$(awk -v w="$COLUMN_WIDTH" 'BEGIN{ if (w<=0) {print 1} else {print int(1.0/w)} }')"
if [ "$max_visible" -lt 1 ]; then max_visible=1; fi

overflow=$(( win_count - max_visible ))

if [ "$overflow" -gt 0 ]; then
  printf '{"text":"%s +%d","tooltip":"%d windows on this monitor/workspace, approx %d fit (column_width=%s)","class":"overflow"}\n' \
    "$ICON" "$overflow" "$win_count" "$max_visible" "$COLUMN_WIDTH"
else
  # keep hidden when OK (set text to something like "•" if you want it always visible)
  printf '{"text":"","tooltip":"%d windows, approx %d fit","class":"ok"}\n' \
    "$win_count" "$max_visible"
fi