'use client'; // Mark as a Client Component
import { useState } from 'react';
import { useSession } from 'next-auth/react';
import { useRouter } from 'next/navigation';
import Link from 'next/link';

export default function CreateTeam() {
    const { data: session, status } = useSession();
    const [teamName, setTeamName] = useState('');
    const [error, setError] = useState('');
    const [isLoading, setIsLoading] = useState(false);
    const router = useRouter();

    // Redirect if not authenticated
    if (status === 'unauthenticated') {
        router.push('/login');
        return null;
    }

    // Redirect if user is admin
    if (status === 'authenticated' && session?.user?.role === 'admin') {
        router.push('/admin');
        return null;
    }

    const handleCreateTeam = async (e) => {
        e.preventDefault();
        setIsLoading(true);
        setError('');

        try {
            const response = await fetch('/api/teams/create', {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json',
                },
                body: JSON.stringify({
                    name: teamName,
                    userId: session.user.id
                }),
            });

            const result = await response.json();

            if (result.success) {
                router.push(`/team/${result.teamId}`);
            } else {
                setError(result.error || 'Failed to create team');
            }
        } catch (err) {
            setError('An unexpected error occurred');
            console.error(err);
        } finally {
            setIsLoading(false);
        }
    };

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

    return (
        <div className="team-selection-container">
            <div className="page-header">
                <Link href="/team-selection" className="back-button">←</Link>
                <div className="page-title">Create Team</div>
                <div className="placeholder"></div>
            </div>

            <div className="team-selection-card">
                <h1>Create a New Team</h1>
                <form onSubmit={handleCreateTeam}>
                    <div className="form-group">
                        <input
                            type="text"
                            placeholder="Team Name"
                            value={teamName}
                            onChange={(e) => setTeamName(e.target.value)}
                            required
                            className="team-input"
                        />
                    </div>
                    <button
                        type="submit"
                        className="team-button"
                        disabled={isLoading}
                    >
                        {isLoading ? 'Creating...' : 'Create Team'}
                    </button>
                </form>
                {error && <p className="error">{error}</p>}
                <div className="team-options">
                    <Link href="/team-selection" className="create-team-link">Back to Team Selection</Link>
                </div>
            </div>

            <div className="nav-bar">
                <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>
        </div>
    );
}