"use client";
import { useState, useEffect } 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, update: updateSession } = useSession();
  const [teamName, setTeamName] = useState("");
  const [error, setError] = useState("");
  const [isLoading, setIsLoading] = useState(true);
  const [success, setSuccess] = useState(false);
  const router = useRouter();

  useEffect(() => {
    if (status === "authenticated") {
      if (session?.user?.teamId) {
        router.push(`/${session.user.teamId}`);
      } else {
        setIsLoading(false);
      }
    } else if (status === "unauthenticated") {
      router.push("/login");
    }
  }, [status, session, router]);

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

    try {
      // Validate team name
      if (!teamName || teamName.trim() === "") {
        throw new Error("Team name is required");
      }

      // Check session status before proceeding
      if (status !== "authenticated") {
        throw new Error("You must be logged in to create a team");
      }

      const response = await fetch("/api/teams/create", {
        method: "POST",
        headers: {
          "Content-Type": "application/json",
        },
        credentials: "include", // Important: include credentials with the request
        body: JSON.stringify({ name: teamName.trim() }),
      });

      const data = await response.json();

      if (!response.ok) {
        throw new Error(data.error || "Failed to create team");
      }

      console.log("Team created successfully with ID:", data.teamId);
      setSuccess(true);

      // Try to update the session with the new team ID
      try {
        // Wait briefly to ensure DB changes are reflected
        await new Promise((resolve) => setTimeout(resolve, 500));
        await updateSession(); // Update the NextAuth session if possible
      } catch (sessionErr) {
        console.warn(
          "Session update failed, using redirect instead:",
          sessionErr
        );
      }

      // Use window.location for a hard navigation to ensure session is fully updated
      setTimeout(() => {
        window.location.href = `/${data.teamId}`;
      }, 1000);
    } catch (err) {
      console.error("Team creation error:", err);
      setError(err.message);
    } finally {
      setIsLoading(false);
    }
  };

  if (isLoading && !success) {
    return <div className="loading">Loading...</div>;
  }

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

      <div className="auth-container">
        <div className="auth-card">
          {success ? (
            <div className="success-message">
              <div className="success-icon">✅</div>
              <h2>Team Created Successfully!</h2>
              <p>Redirecting to your new team page...</p>
            </div>
          ) : (
            <>
              <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="auth-input"
                    maxLength={50}
                  />
                </div>
                <button
                  type="submit"
                  className="auth-button"
                  disabled={isLoading}
                >
                  {isLoading ? "Creating..." : "Create Team"}
                </button>
              </form>
              {error && <p className="error-message">{error}</p>}
            </>
          )}
          <div className="team-options">
            <Link href="/team-selection">
              <button className="auth-button secondary-button">
                Back to Team Selection
              </button>
            </Link>
          </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;
        }
        .success-message {
          text-align: center;
          padding: 20px 0;
        }
        .success-icon {
          font-size: 48px;
          margin-bottom: 10px;
          color: #4caf50;
        }
        .secondary-button {
          background-color: #a98467;
        }
      `}</style>
    </div>
  );
}