#!/bin/bash

# UDP test client with interactive key controls
# Connects to game server and displays responses

HOST="localhost"
SERVER_PORT=9999
LISTEN_PORT=12345

echo "=========================================="
echo "  Game Test Client"
echo "=========================================="
echo ""
echo "Controls:"
echo "  1 = REGISTER (join game)"
echo "  2 = Send position update (100, 200)"
echo "  3 = Send position update (300, 150)"
echo "  q = quit"
echo ""
echo "Listening for server responses on port $LISTEN_PORT..."
echo "=========================================="
echo ""

# Create named pipe for responses
RESPONSE_PIPE=$(mktemp -d)/response
mkfifo "$RESPONSE_PIPE"

# Start UDP listener in background, output to FIFO
nc -u -l 127.0.0.1 $LISTEN_PORT > "$RESPONSE_PIPE" 2>/dev/null &
LISTENER_PID=$!

# Read responses in background and display them
(while IFS= read -r line; do
  echo "[SERVER] $line"
done < "$RESPONSE_PIPE") &
READER_PID=$!

# Cleanup on exit
cleanup() {
  kill $LISTENER_PID $READER_PID 2>/dev/null
  rm -rf "$(dirname "$RESPONSE_PIPE")"
  echo ""
  echo "Disconnected."
}
trap cleanup EXIT

# Interactive input loop
echo -n "> "
while IFS= read -rsn1 key; do
  case "$key" in
    1)
      echo ""
      echo "[CLIENT] Sending: REGISTER"
      echo -n "REGISTER" | nc -u -w1 -p $LISTEN_PORT "$HOST" "$SERVER_PORT" 2>/dev/null
      echo -n "> "
      ;;
    2)
      echo ""
      echo "[CLIENT] Sending: POS#100#200"
      echo -n "POS#100#200" | nc -u -w1 -p $LISTEN_PORT "$HOST" "$SERVER_PORT" 2>/dev/null
      echo -n "> "
      ;;
    3)
      echo ""
      echo "[CLIENT] Sending: POS#300#150"
      echo -n "POS#300#150" | nc -u -w1 -p $LISTEN_PORT "$HOST" "$SERVER_PORT" 2>/dev/null
      echo -n "> "
      ;;
    q|Q)
      echo ""
      break
      ;;
    *)
      # Don't print anything for invalid keys, just show prompt again
      ;;
  esac
done