#!/usr/bin/env bash
# Click the target window, then alternate:
# Turn1 = paste clipboard into that window,
# Turn2 = picks up the new clipboard from that window and plays it as sound reply. Repeats until Ctrl-C.

set -euo pipefail

# Dependencies check (fail early)
for cmd in xdotool xclip sha256sum notify-send; do
  command -v "$cmd" >/dev/null 2>&1 || { echo "Require $cmd"; exit 1; }
done

echo "Click the target window now..."
WIN=$(xdotool selectwindow) || { echo "No window selected"; exit 1; }
echo "Selected window id: $WIN"

window_exists() {
  xdotool getwindowname "$WIN" >/dev/null 2>&1
}

last_clipboard_hash=""

get_clipboard_hash() {
  local data
  data="$(xclip -selection clipboard -o 2>/dev/null)" || data=""
  printf '%s' "$data" | sha256sum | awk '{print $1}'
}

# Initialize last hash so the first immediate read doesn't trigger an action.
last_clipboard_hash="$(get_clipboard_hash)"

# State: 1 => Turn1, 2 => Turn2
state=1
INTERVAL=2

echo "Watching clipboard for changes. Turn1=paste, Turn2=keystroke. Ctrl-C to stop."

while true; do
  # Exit if target window closed
  if ! window_exists; then
    echo "Target window $WIN no longer exists. Exiting."
    exit 0
  fi

  clipboard_hash="$(get_clipboard_hash)"

  if [ "$clipboard_hash" != "$last_clipboard_hash" ]; then
    # Only act if we've seen a prior value (prevents treating the initial read as a change)
    if [ -n "$last_clipboard_hash" ]; then
      if [ "$state" -eq 1 ]; then
        # Turn1: paste clipboard into the selected window (sends Ctrl+V)
        xdotool key --window "$WIN" --clearmodifiers ctrl+v
        content="$(xclip -selection clipboard -o 2>/dev/null)"
        notify-send "Multiturn" "Turn1: pasted clipboard into window $WIN with:\n\n$content"
        sleep 0.2
        xdotool key --window "$WIN" --clearmodifiers KP_Enter
        state=2
      else
        # Turn2: perform your special keystroke (no paste)
        flatpak run net.mkiol.SpeechNote --action start-reading-clipboard
        notify-send "Multiturn" "Turn2: sent special keystroke to window $WIN"
        state=1
      fi
    fi
    last_clipboard_hash="$clipboard_hash"
  fi

  sleep "$INTERVAL"
done