#!/bin/bash

# omarchy:summary=Resize the active webcam recording overlay
# omarchy:group=capture
# omarchy:args=<smaller|larger|reset|small|medium|large>
# omarchy:examples=omarchy capture webcam resize smaller | omarchy-capture-webcam-resize reset

set -euo pipefail

readonly MARGIN=40
readonly SMALL_WIDTH=240
readonly MEDIUM_WIDTH=360
readonly LARGE_WIDTH=480

usage() {
  echo "Usage: omarchy-capture-webcam-resize <smaller|larger|reset|small|medium|large>" >&2
  exit 1
}

hypr_dispatch() {
  local lua="$1"
  shift

  hyprctl dispatch "$lua" >/dev/null 2>&1 || hyprctl dispatch "$@" >/dev/null
}

action=${1:-}
case $action in
smaller | larger | reset | small | medium | large) ;;
*) usage ;;
esac

if ! client=$(hyprctl clients -j 2>/dev/null | jq -cer 'first(.[] | select(.title == "WebcamOverlay")) // empty' 2>/dev/null); then
  exit 0
fi

read -r address current_width current_height monitor_id < <(
  jq -r '[.address, .size[0], .size[1], .monitor] | @tsv' <<<"$client"
)

[[ -n $address && $current_width =~ ^[0-9]+$ && $current_height =~ ^[0-9]+$ && $monitor_id =~ ^[0-9]+$ ]] || exit 0
((current_width > 0 && current_height > 0)) || exit 0

target_width=$current_width
case $action in
small) target_width=$SMALL_WIDTH ;;
medium | reset) target_width=$MEDIUM_WIDTH ;;
large) target_width=$LARGE_WIDTH ;;
smaller)
  for width in $LARGE_WIDTH $MEDIUM_WIDTH $SMALL_WIDTH; do
    if ((width < current_width)); then
      target_width=$width
      break
    fi
  done
  ;;
larger)
  for width in $SMALL_WIDTH $MEDIUM_WIDTH $LARGE_WIDTH; do
    if ((width > current_width)); then
      target_width=$width
      break
    fi
  done
  ;;
esac

# The camera is center-cropped to a consistent 8:9 portrait frame.
target_height=$(((target_width * 9 + 4) / 8))

if ! monitor=$(hyprctl monitors -j 2>/dev/null | jq -cer --argjson id "$monitor_id" 'first(.[] | select(.id == $id)) // empty' 2>/dev/null); then
  exit 0
fi

read -r monitor_x monitor_y monitor_width monitor_height < <(
  jq -r '
    . as $monitor |
    (($monitor.transform // 0) % 2 == 1) as $rotated |
    [
      .x,
      .y,
      (((if $rotated then .height else .width end) / .scale) | floor),
      (((if $rotated then .width else .height end) / .scale) | floor)
    ] | @tsv
  ' <<<"$monitor"
)

[[ $monitor_x =~ ^-?[0-9]+$ && $monitor_y =~ ^-?[0-9]+$ && $monitor_width =~ ^[0-9]+$ && $monitor_height =~ ^[0-9]+$ ]] || exit 0

target_x=$((monitor_x + monitor_width - target_width - MARGIN))
target_y=$((monitor_y + monitor_height - target_height - MARGIN))

((target_x < monitor_x + MARGIN)) && target_x=$((monitor_x + MARGIN))
((target_y < monitor_y + MARGIN)) && target_y=$((monitor_y + MARGIN))

window="address:$address"
hypr_dispatch \
  "hl.dsp.window.resize({ window = \"$window\", x = $target_width, y = $target_height })" \
  resizewindowpixel "exact $target_width $target_height,$window"
hypr_dispatch \
  "hl.dsp.window.move({ window = \"$window\", x = $target_x, y = $target_y })" \
  movewindowpixel "exact $target_x $target_y,$window"