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

repo_path=${LUMBRIDGE_REPO:-/home/metal/Desktop/Lumbridge Code/lumbridge}
window_title='Lumbridge · GPUI workspace'
bacon_title='Lumbridge · Bacon'
manifest_path="$repo_path/Cargo.toml"
binary_path="$repo_path/target/debug/lumbridge"

if [[ ! -d "$repo_path/.git" ]]; then
  echo "Lumbridge repository not found at $repo_path" >&2
  exit 1
fi

export DISPLAY=${DISPLAY:-:0}
export XAUTHORITY=${XAUTHORITY:-/run/user/1000/gdm/Xauthority}
export XDG_RUNTIME_DIR=${XDG_RUNTIME_DIR:-/run/user/1000}
export DBUS_SESSION_BUS_ADDRESS=${DBUS_SESSION_BUS_ADDRESS:-unix:path=/run/user/1000/bus}

for command_name in wmctrl xdotool; do
  if ! command -v "$command_name" >/dev/null 2>&1; then
    echo "required command not found: $command_name" >&2
    exit 1
  fi
done

if [[ ! -x "$binary_path" ]]; then
  if ! command -v cargo >/dev/null 2>&1; then
    # Non-login Tailscale SSH commands do not inherit metal's Cargo PATH.
    # shellcheck source=/dev/null
    source /home/metal/.cargo/env
  fi
  if ! command -v cargo >/dev/null 2>&1; then
    echo "required command not found: cargo" >&2
    exit 1
  fi
  # shellcheck source=/dev/null
  source "$repo_path/scripts/native-libs.sh"
  cargo build --locked --manifest-path "$manifest_path" -p lumbridge
fi

# GPUI's X11 client sets WM_NAME but not _NET_WM_NAME, so wmctrl's window list
# reports its title as N/A and a title match never succeeds. xdotool reads
# WM_NAME, and matching the launched PID avoids picking up another client that
# merely mentions the window title.
window_for_pid() {
  local pid=$1 candidate
  for candidate in $(xdotool search --name 'GPUI workspace' 2>/dev/null); do
    if [[ "$(xdotool getwindowpid "$candidate" 2>/dev/null || true)" == "$pid" ]]; then
      printf '%s\n' "$candidate"
      return 0
    fi
  done
  return 1
}

existing_id=''
app_pid=$(pgrep -f "^$binary_path$" | head -n 1 || true)
if [[ -n "$app_pid" ]]; then
  existing_id=$(window_for_pid "$app_pid" || true)
fi
if [[ -z "$existing_id" ]]; then
  "$binary_path" >"$XDG_RUNTIME_DIR/lumbridge-gpui.log" 2>&1 &
  app_pid=$!
  for _attempt in $(seq 1 80); do
    existing_id=$(window_for_pid "$app_pid" || true)
    [[ -n "$existing_id" ]] && break
    sleep 0.1
  done
fi

if [[ -z "$existing_id" ]]; then
  echo "Lumbridge window did not become visible; see $XDG_RUNTIME_DIR/lumbridge-gpui.log" >&2
  exit 1
fi

# Gigabyte G34WQC is 3440x1440 at X=0. Lumbridge owns the whole panel: the
# workspace is a wall of agents and every pixel of width buys another column.
# Set LUMBRIDGE_HALF=1 to fall back to the left half beside Bacon.
if [[ "${LUMBRIDGE_HALF:-0}" == "1" ]]; then
  bacon_id=$(wmctrl -l | awk -v title="$bacon_title" 'index($0, title) { print $1; exit }')
  if [[ -n "$bacon_id" ]]; then
    wmctrl -i -r "$bacon_id" -b remove,maximized_vert,maximized_horz
    # GNOME's X11 move coordinate is scaled on this display even though window
    # sizes are not; 860 places the frame at physical X=1720.
    wmctrl -i -r "$bacon_id" -e 0,860,0,1720,1400
  fi
  wmctrl -i -r "$existing_id" -b remove,fullscreen
  wmctrl -i -r "$existing_id" -b remove,maximized_vert,maximized_horz
  wmctrl -i -r "$existing_id" -e 0,0,0,1720,1400
  wmctrl -i -a "$existing_id"
  # GPUI's undecorated X11 client ignores direct position requests under GNOME.
  # Use the window manager's move interaction to settle it into the left half.
  xdotool key alt+F7
  sleep 0.15
  xdotool mousemove 860 660 click 1
  echo "Lumbridge is on the left half of the Gigabyte display (window $existing_id)."
  exit 0
fi

# Fullscreen drops the title bar and the shell owns all 3440x1440. Move it onto
# the Gigabyte first: a fullscreen request applies to whichever output the
# window is currently on, so placing it after would fullscreen the wrong panel.
wmctrl -i -r "$existing_id" -b remove,fullscreen
wmctrl -i -r "$existing_id" -b remove,maximized_vert,maximized_horz
wmctrl -i -r "$existing_id" -e 0,0,0,1720,1400
wmctrl -i -a "$existing_id"
xdotool key alt+F7
sleep 0.15
xdotool mousemove 860 660 click 1
sleep 0.2
wmctrl -i -r "$existing_id" -b add,fullscreen
sleep 0.3

geometry=$(xdotool getwindowgeometry "$existing_id" | awk '/Geometry/ { print $2 }')
echo "Lumbridge is fullscreen on the Gigabyte display at ${geometry} (window $existing_id)."