#!/usr/bin/env bash

set -euo pipefail

TOGGLE="$HOME/.config/waybar/scripts/dock-toggle.sh"

SHOW_EDGE_SIZE=12
DOCK_HEIGHT=72
HIDE_DELAY=0.35
POLL_INTERVAL=0.08

LOG_FILE="/tmp/waybar-dock.log"
DEBUG=1

last_inside_dock_time=0

log() {
  if [[ "$DEBUG" -eq 1 ]]; then
    echo "[$(date '+%H:%M:%S.%3N')] $*" >>"$LOG_FILE"
  fi
}

get_cursor() {
  hyprctl -j cursorpos
}

get_monitors() {
  hyprctl -j monitors
}

get_monitor_for_cursor() {
  local cursor_json monitors_json
  cursor_json="$(get_cursor)"
  monitors_json="$(get_monitors)"

  local cx cy
  cx="$(jq -r '.x' <<<"$cursor_json")"
  cy="$(jq -r '.y' <<<"$cursor_json")"

  jq -c --argjson cx "$cx" --argjson cy "$cy" '
    map(
      . as $m
      | ($m.width / $m.scale) as $lw
      | ($m.height / $m.scale) as $lh
      | select(
          ($cx >= $m.x) and
          ($cx < ($m.x + $lw)) and
          ($cy >= $m.y) and
          ($cy < ($m.y + $lh))
        )
    ) | first
  ' <<<"$monitors_json"
}

dock_visible() {
  [[ "$("$TOGGLE" status)" == "visible" ]]
}

show_dock() {
  "$TOGGLE" show
}

hide_dock() {
  "$TOGGLE" hide
}

log "Started dock autohide"

while true; do
  cursor_json="$(get_cursor)"
  monitor_json="$(get_monitor_for_cursor)"
  now="$(date +%s.%N)"

  cx="$(jq -r '.x' <<<"$cursor_json")"
  cy="$(jq -r '.y' <<<"$cursor_json")"

  if [[ "$monitor_json" == "null" || -z "$monitor_json" ]]; then
    log "No monitor found for cursor x=$cx y=$cy"
    sleep "$POLL_INTERVAL"
    continue
  fi

  mon_name="$(jq -r '.name // .id // "unknown"' <<<"$monitor_json")"
  mon_x="$(jq -r '.x' <<<"$monitor_json")"
  mon_y="$(jq -r '.y' <<<"$monitor_json")"
  mon_w="$(jq -r '.width' <<<"$monitor_json")"
  mon_h="$(jq -r '.height' <<<"$monitor_json")"
  mon_scale="$(jq -r '.scale' <<<"$monitor_json")"

  layout_w="$(awk "BEGIN {print $mon_w / $mon_scale}")"
  layout_h="$(awk "BEGIN {print $mon_h / $mon_scale}")"

  layout_bottom="$(awk "BEGIN {print $mon_y + $layout_h}")"

  show_threshold="$(awk "BEGIN {print $layout_bottom - $SHOW_EDGE_SIZE}")"
  keep_visible_threshold="$(awk "BEGIN {print $layout_bottom - $DOCK_HEIGHT}")"

  log "cursor=($cx,$cy) monitor=$mon_name raw=${mon_w}x${mon_h} scale=$mon_scale layout=${layout_w}x${layout_h} bottom=$layout_bottom show_threshold=$show_threshold keep_visible_threshold=$keep_visible_threshold"

  # 1) Cursor ganz unten -> Dock zeigen
  if awk "BEGIN {exit !($cy >= $show_threshold)}"; then
    log "ENTER SHOW EDGE on $mon_name"
    show_dock
    last_inside_dock_time="$now"

  # 2) Cursor ist auf dem Dock-Bereich -> sichtbar lassen
  elif awk "BEGIN {exit !($cy >= $keep_visible_threshold)}"; then
    log "INSIDE DOCK AREA on $mon_name"
    last_inside_dock_time="$now"

    if ! dock_visible; then
      log "SHOW DOCK because cursor is inside dock area"
      show_dock
    fi

  # 3) Cursor ist oberhalb des Dock-Bereichs -> ggf. verstecken
  else
    if dock_visible; then
      delta="$(awk "BEGIN {print $now - $last_inside_dock_time}")"
      log "ABOVE DOCK AREA delta=$delta"

      if awk "BEGIN {exit !($delta >= $HIDE_DELAY)}"; then
        log "HIDE DOCK"
        hide_dock
      fi
    fi
  fi

  sleep "$POLL_INTERVAL"
done