peworkshop/app/(main)/team-selection/page.js

"use client"; // Mark as a Client Component
import { useState, useEffect } from "react";
import { useSession } from "next-auth/react";
import { useRouter } from "next/navigation";
import Link from "next/link";
import { joinTeam } from "../../actions/auth";

// Add CSS to fix the navbar at the bottom
const styles = {
  navbar: {
    position: "fixed",
    bottom: 0,
    width: "100%",
    backgroundColor: "#fff",
    borderTop: "1px solid #ccc",
    padding: "10px 0",
    textAlign: "center",
  },
};

export default function TeamSelection() {
  const { data: session, status } = useSession();
  const [teamCode, setTeamCode] = useState("");
  const [error, setError] = useState("");
  const [isLoading, setIsLoading] = useState(false);
  const router = useRouter();

  // Use useEffect for navigation instead of doing it in render
  useEffect(() => {
    // Redirect if not authenticated
    if (status === "unauthenticated") {
      router.push("/login");
    }

    // Redirect if user is admin
    if (status === "authenticated" && session?.user?.role === "admin") {
      router.push("/admin");
    }
  }, [status, session, router]);

  const handleJoinTeam = async (e) => {
    e.preventDefault();
    setIsLoading(true);
    setError("");

    try {
      const result = await joinTeam(session.user.id, teamCode);

      if (result.success) {
        router.push(`/team/${result.teamId}`);
      } else {
        setError(result.error || "Team not found");
      }
    } catch (err) {
      setError("An unexpected error occurred");
      console.error(err);
    } finally {
      setIsLoading(false);
    }
  };

  if (status === "loading") {
    return <div className="loading">Loading...</div>;
  }

  // Don't render anything if redirecting
  if (
    status === "unauthenticated" ||
    (status === "authenticated" && session?.user?.role === "admin")
  ) {
    return null;
  }

  return (
    <div className="auth-page">
      <div className="page-header">
        <div className="back-button"></div>
        <div className="page-title">Team Selection</div>
        <div className="placeholder"></div>
      </div>

      <div className="auth-container">
        <div className="auth-card">
          <h1>Team Selection</h1>
          <form onSubmit={handleJoinTeam}>
            <div className="form-group">
              <input
                type="text"
                placeholder="Team Code"
                value={teamCode}
                onChange={(e) => setTeamCode(e.target.value)}
                required
                className="auth-input"
              />
            </div>
            <button type="submit" className="auth-button" disabled={isLoading}>
              {isLoading ? "Joining..." : "Join Team"}
            </button>
          </form>
          {error && <p className="error-message">{error}</p>}
          <div className="team-options">
            <Link href="/create-team">
              <button className="auth-button">Create a new team</button>
            </Link>
          </div>
        </div>
      </div>

      <div className="nav-bar" style={styles.navbar}>
        <div className="nav-item">
          <div className="nav-icon">🏠</div>
        </div>
        <div className="nav-item">
          <div className="nav-icon">📊</div>
        </div>
        <div className="nav-item">
          <div className="nav-icon">🏆</div>
        </div>
        <div className="nav-item">
          <div className="nav-icon">👤</div>
        </div>
      </div>

      <style jsx>{`
        .auth-page {
          display: flex;
          flex-direction: column;
          justify-content: center;
          align-items: center;
          height: 100vh;
          overflow: hidden;
        }
        .auth-container {
          display: flex;
          flex-direction: column;
          justify-content: center;
          align-items: center;
          width: 100%;
          max-width: 400px;
          padding: 20px;
          box-sizing: border-box;
        }
        .auth-card {
          width: 100%;
          padding: 20px;
          box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
          border-radius: 8px;
          background-color: #fff;
        }
        .form-group {
          margin-bottom: 10px;
        }
        .auth-input {
          width: 100%;
          padding: 10px;
          border: 1px solid #ccc;
          border-radius: 4px;
        }
        .auth-button {
          width: 100%;
          padding: 10px;
          margin-top: 10px;
          background-color: #68543c; /* Updated brown color */
          color: white;
          border: none;
          border-radius: 4px;
          cursor: pointer;
          text-align: center;
        }
        .error-message {
          color: red;
          margin-top: 10px;
        }
        .nav-bar {
          position: fixed;
          bottom: 0;
          width: 100%;
          background-color: #fff;
          border-top: 1px solid #ccc;
          padding: 10px 0;
          text-align: center;
        }
        .nav-item {
          display: inline-block;
          margin: 0 10px;
        }
        .nav-icon {
          font-size: 24px;
        }
      `}</style>
    </div>
  );
}