import React, { useEffect, useState } from "react";
import { motion, AnimatePresence } from "framer-motion";
import { useNakama } from "./providers/NakamaProvider";

export default function Player({
  onMatchDataCallback,
}: {
  onMatchDataCallback: (msg: any) => void;
}) {
  const {
    session,
    matchId,
    loginOrRegister,
    logout,
    onMatchData,
    joinMatchmaker,
    exitMatchmaker,
  } = useNakama();

  const [username, setUsername] = useState(
    localStorage.getItem("username") ?? ""
  );
  const [selectedGame, setSelectedGame] = useState("tictactoe");
  const [selectedMode, setSelectedMode] = useState("classic");
  const [isQueueing, setIsQueueing] = useState(false);
  const isRegistered = localStorage.getItem("registered") === "yes";

  // ------------------------------------------
  // CONNECT
  // ------------------------------------------
  async function handleConnect() {
    await loginOrRegister(username);

    // Match data listener
    onMatchData(onMatchDataCallback);
  }

  // ------------------------------------------
  // MATCHMAKING
  // ------------------------------------------
  async function startQueue(
    selectedGame: string,
    selectedMode: string
  ) {
    setIsQueueing(true);
    const gameMetadata = {
      game: selectedGame,
      mode: selectedMode,
    }

    try {
      const ticket = await joinMatchmaker(gameMetadata);
      console.log("Queued:", ticket);
    } catch (err) {
      console.error("Matchmaking failed:", err);
      setIsQueueing(false);
    }
  }

  async function cancelQueue(
    selectedGame: string,
    selectedMode: string
  ) {
    setIsQueueing(false);

    const gameMetadata = {
      game: selectedGame,
      mode: selectedMode,
    }
    await exitMatchmaker(gameMetadata)
  }

  useEffect(() => {
    handleConnect();
  }, []);

  return (
    <div style={{ marginBottom: "20px" }}>
      <AnimatePresence mode="wait">
        {/* ---------------- LOGIN SCREEN ---------------- */}
        {!session && (
          <motion.div
            key="login"
            initial={{ opacity: 0, y: 20, scale: 0.97 }}
            animate={{ opacity: 1, y: 0, scale: 1 }}
            exit={{ opacity: 0, y: -20, scale: 0.97 }}
            transition={{ duration: 0.4, ease: "easeOut" }}
            style={{
              background: "#111",
              padding: "24px",
              borderRadius: "16px",
              width: "280px",
              margin: "0 auto",
              color: "white",
              boxShadow:
                "0 4px 16px rgba(0,0,0,0.4), inset 0 0 20px rgba(255,255,255,0.03)",
              textAlign: "center",
            }}
          >
            <h2 style={{ marginBottom: "16px" }}>Welcome!</h2>

            <input
              placeholder="Enter username"
              value={username}
              disabled={isRegistered}
              onChange={(e) => setUsername(e.target.value)}
              style={{
                padding: "10px",
                width: "100%",
                borderRadius: "12px",
                background: "#222",
                color: "white",
                border: "1px solid #333",
                marginBottom: "12px",
                fontSize: "14px",
              }}
            />

            <motion.button
              whileTap={{ scale: 0.95 }}
              onClick={handleConnect}
              disabled={username.length === 0}
              style={{
                width: "100%",
                padding: "10px",
                borderRadius: "12px",
                background: username.length ? "#2ecc71" : "#444",
                border: "none",
                cursor: username.length ? "pointer" : "not-allowed",
                color: "white",
                fontWeight: 600,
                fontSize: "14px",
              }}
            >
              Connect
            </motion.button>
          </motion.div>
        )}

        {/* ---------------- LOBBY SCREEN ---------------- */}
        {session && !matchId && (
          <motion.div
            key="lobby"
            initial={{ opacity: 0, y: 40 }}
            animate={{ opacity: 1, y: 0 }}
            exit={{ opacity: 0, y: -40 }}
            transition={{ duration: 0.45, ease: "easeOut" }}
            style={{
              padding: "20px",
              background: "#0f0f0f",
              borderRadius: "20px",
              color: "white",
              textAlign: "center",
            }}
          >
            <h2 style={{ marginBottom: "10px" }}>
              Hello, <span style={{ color: "#2ecc71" }}>{session.username}</span>
            </h2>

            <label style={{ display: "block", marginTop: "10px", opacity: 0.7 }}>
              Select Game Mode
            </label>

            <select
              value={selectedGame}
              disabled={isQueueing}
              onChange={(e) => setSelectedGame(e.target.value)}
              style={{
                padding: "8px",
                margin: "10px 0 16px",
                width: "60%",
                borderRadius: "10px",
                background: "#222",
                color: "white",
                border: "1px solid #333",
              }}
            >
              <option value="tictactoe">Tic Tac Toe</option>
              <option value="battleship">Battleship</option>
            </select>

            <select
              value={selectedMode}
              disabled={isQueueing}
              onChange={(e) => setSelectedMode(e.target.value)}
              style={{
                padding: "8px",
                margin: "10px 0 16px",
                width: "60%",
                borderRadius: "10px",
                background: "#222",
                color: "white",
                border: "1px solid #333",
              }}
            >
              <option value="classic">Classic</option>
              <option value="blitz">Blitz</option>
            </select>

            {!isQueueing && (
              <motion.button
                whileTap={{ scale: 0.95 }}
                onClick={() => startQueue(
                  selectedGame,
                  selectedMode,
                )}
                style={{
                  padding: "10px 20px",
                  borderRadius: "12px",
                  background: "#3498db",
                  color: "white",
                  border: "none",
                  marginRight: "10px",
                  cursor: "pointer",
                  fontWeight: 600,
                }}
              >
                Join Matchmaking
              </motion.button>
            )}

            {/* Queueing animation */}
            {isQueueing && (
              <motion.div
                initial={{ opacity: 0, scale: 0.95 }}
                animate={{ opacity: 1, scale: 1 }}
                transition={{ duration: 0.3 }}
                style={{
                  marginTop: "10px",
                  marginBottom: "10px",
                  padding: "12px 16px",
                  borderRadius: "12px",
                  background: "#222",
                  color: "white",
                  display: "inline-block",
                  fontSize: "14px",
                  border: "1px solid #333",
                }}
              >
                <div style={{ marginBottom: "6px", fontWeight: 600 }}>
                  Finding an opponent…
                </div>

                {/* Animated pulsing dots */}
                <motion.div
                  animate={{ opacity: [0.3, 1, 0.3] }}
                  transition={{ duration: 1.2, repeat: Infinity }}
                  style={{ letterSpacing: "2px", fontSize: "18px" }}
                >
                  ● ● ●
                </motion.div>

                {/* Cancel button */}
                <button
                  onClick={() => cancelQueue(
                    selectedGame,
                    selectedMode,
                  )}
                  style={{
                    marginTop: "10px",
                    padding: "6px 12px",
                    borderRadius: "8px",
                    background: "#e74c3c",
                    color: "white",
                    border: "none",
                    cursor: "pointer",
                    fontSize: "12px",
                    fontWeight: 600,
                  }}
                >
                  Cancel
                </button>
              </motion.div>
            )}

            <div style={{ marginTop: "24px" }}>
            </div>

            <motion.button
              whileTap={{ scale: 0.95 }}
              onClick={logout}
              style={{
                padding: "10px 20px",
                borderRadius: "12px",
                background: "#e74c3c",
                color: "white",
                border: "none",
                cursor: "pointer",
                fontWeight: 600,
              }}
            >
              Logout
            </motion.button>

          </motion.div>
        )}

        {/* ---------------- MATCH SCREEN ---------------- */}
        {session && matchId && (
          <motion.div
            key="match"
            initial={{ opacity: 0, scale: 0.9, y: 30 }}
            animate={{ opacity: 1, scale: 1, y: 0 }}
            exit={{ opacity: 0, scale: 0.9, y: -20 }}
            transition={{ duration: 0.35, ease: "easeOut" }}
            style={{
              padding: "20px",
              color: "white",
              textAlign: "center",
            }}
          >
            <h2 style={{ marginBottom: "10px" }}>
              Go, <span style={{ color: "#2ecc71" }}>{session.username}</span>
            </h2>
          </motion.div>
        )}
      </AnimatePresence>
    </div>
  );
}