"use client";
import { useState, useEffect, useCallback } from "react";
import { useSession } from "next-auth/react";
import { useRouter } from "next/navigation";
import Link from "next/link";
import { use } from "react";
import NavBar from "@/components/NavBar";
import { getHuntTimer } from "@/utils/timerService";

export default function TeamPage({ params }) {
  const { status, data: session } = useSession();
  const [team, setTeam] = useState(null);
  const [teamMembers, setTeamMembers] = useState([]);
  const [loading, setLoading] = useState(true);
  const [error, setError] = useState("");
  const [huntActive, setHuntActive] = useState(false);
  const [huntInProgress, setHuntInProgress] = useState(false);
  const router = useRouter();

  const unwrappedParams = use(params);
  const teamId = unwrappedParams.teamId;

  const checkHuntStatus = useCallback(async () => {
    try {
      const response = await fetch("/api/hunt-status", {
        method: "GET",
        headers: { "Content-Type": "application/json" },
        credentials: "include",
      });

      if (response.ok) {
        const data = await response.json();
        setHuntActive(data.active || false);
      }
    } catch (err) {
      console.error("Failed to check hunt status:", err);
    }
  }, []);

  const fetchTeamData = useCallback(async () => {
    try {
      if (!teamId || isNaN(parseInt(teamId, 10))) {
        throw new Error("Invalid team ID");
      }

      const userResponse = await fetch("/api/user", {
        method: "GET",
        headers: {
          "Content-Type": "application/json",
        },
        credentials: "include",
        cache: "no-store",
      });

      const userData = await userResponse.json();

      if (!userData.teamId || userData.teamId != teamId) {
        console.log("User no longer in team, redirecting to team selection");
        window.location.href = "/team-selection";
        return;
      }

      console.log("Fetching team data for team ID:", teamId);

      const timestamp = new Date().getTime();
      const response = await fetch(`/api/teams/${teamId}?_t=${timestamp}`, {
        method: "GET",
        headers: {
          "Content-Type": "application/json",
          "Cache-Control": "no-cache, no-store, must-revalidate",
          Pragma: "no-cache",
        },
        credentials: "include",
        cache: "no-store",
      });

      if (!response.ok) {
        const text = await response.text();
        let errorMessage;
        try {
          const errorData = JSON.parse(text);
          errorMessage = errorData.error || "Failed to fetch team data";
        } catch (unused) {
          errorMessage = `Failed to fetch team data: ${
            response.status
          } ${text.slice(0, 100)}`;
        }
        throw new Error(errorMessage);
      }

      const data = await response.json();
      console.log("Team data received:", data);

      if (!data.team) {
        throw new Error("Team not found");
      }

      setTeam(data.team);
      setTeamMembers(data.members || []);
      setError("");

      await checkHuntStatus();
    } catch (err) {
      console.error("Team page error:", err);
      setError(err.message);
      if (err.message.includes("401")) {
        router.push("/login");
      }
    } finally {
      setLoading(false);
    }
  }, [teamId, router, checkHuntStatus]);

  useEffect(() => {
    if (status === "authenticated" && teamId) {
      console.log("Session authenticated, fetching team data");
      fetchTeamData();

      const refreshInterval = setInterval(fetchTeamData, 3000);

      return () => clearInterval(refreshInterval);
    } else if (status === "unauthenticated") {
      console.log("User not authenticated, redirecting to login");
      router.push("/login");
    }
  }, [teamId, status, fetchTeamData, router]);

  useEffect(() => {
    const timerData = getHuntTimer();
    setHuntInProgress(timerData && timerData.startTime);
  }, []);

  if (status === "loading" || loading) {
    return (
      <div className="loading-container">
        <div className="loading-spinner"></div>
        <div className="loading-text">Loading team data...</div>
      </div>
    );
  }

  if (error) {
    return (
      <div className="error-container">
        <div className="error-icon">⚠️</div>
        <div className="error-message">Error: {error}</div>
        <Link href="/team-selection">
          <button className="back-button">Back to Team Selection</button>
        </Link>
      </div>
    );
  }

  if (!team) {
    return (
      <div className="error-container">
        <div className="error-icon">🔍</div>
        <div className="error-message">Team not found</div>
        <Link href="/team-selection">
          <button className="back-button">Back to Team Selection</button>
        </Link>
      </div>
    );
  }

  const handleStartHunt = () => {
    router.push("/map");
  };

  return (
    <div className="team-page">
      <div className="team-banner">
        <div className="team-info">
          <h1 className="team-name">Team Name: {team.name}</h1>
          <div className="team-code">{team.code}</div>
        </div>
      </div>

      <div className="content-wrapper">
        <div className="waves-container">
          <img src="/images/Waves.svg" alt="Waves" className="waves-image" />
        </div>

        <div className="scroll-background">
          <div className="members-container">
            <h2 className="members-title">Team Members</h2>

            <div className="members-content">
              {teamMembers.length > 0 ? (
                <div className="members-list">
                  {teamMembers.map((member) => (
                    <div key={member.id} className="member-card">
                      <div className="member-avatar">👤</div>
                      <div className="member-details">
                        <div className="member-name">
                          {member.username}
                          {member.id === session?.user?.id && " (You)"}
                        </div>
                      </div>
                    </div>
                  ))}
                </div>
              ) : (
                <div className="empty-state">No team members found</div>
              )}
            </div>
          </div>
        </div>
      </div>

      <div className="team-actions">
        <button
          className="action-button leave-button"
          onClick={async () => {
            if (confirm("Are you sure you want to leave this team?")) {
              try {
                setLoading(true);
                const response = await fetch(`/api/teams/${teamId}/leave`, {
                  method: "POST",
                  headers: { "Content-Type": "application/json" },
                  credentials: "include",
                });

                if (response.ok) {
                  localStorage.removeItem("teamData");
                  sessionStorage.removeItem("teamData");
                  localStorage.setItem("userLeftTeam", "true");
                  window.location.href = "/team-selection";
                } else {
                  const errorData = await response.json();
                  throw new Error(errorData.error || "Failed to leave team");
                }
              } catch (err) {
                setError(err.message);
                setLoading(false);
              }
            }
          }}
        >
          Leave Team
        </button>

        <button
          className="action-button start-button"
          onClick={handleStartHunt}
        >
          {huntInProgress ? "Continue Hunt" : "Start Hunt"}
        </button>
      </div>

      <NavBar activeLink="team" teamData={team} />

      <style jsx>{`
        .team-page {
          display: flex;
          flex-direction: column;
          min-height: 100vh;
          background-color: #69b5a8;
          font-family: Arial, sans-serif;
          position: relative;
          overflow-x: hidden;
          width: 100%;
          padding-bottom: 70px;
        }

        .content-wrapper {
          position: relative;
          flex: 1;
          display: flex;
          flex-direction: column;
          align-items: center;
          width: 100%;
          padding: 20px 0 0 0;
          flex-grow: 1;
        }

        .waves-container {
          position: absolute;
          top: 0;
          left: 0;
          width: 100%;
          height: 120px;
          overflow: hidden;
          z-index: 1;
        }

        .waves-image {
          position: absolute;
          top: 0;
          left: 0;
          width: 100%;
          height: 100%;
          object-fit: cover;
          object-position: center top;
        }

        .team-banner {
          background-image: url("/images/Bottom-Bar.svg");
          background-repeat: no-repeat;
          background-size: cover;
          background-position: center;
          color: white;
          padding: 20px;
          position: relative;
          display: flex;
          align-items: center;
          z-index: 3;
          flex-shrink: 0;
        }

        .team-info {
          flex: 1;
          display: flex;
          justify-content: space-between;
          align-items: center;
        }

        .team-name {
          margin: 0;
          font-size: 24px;
          font-weight: bold;
          color: white;
        }

        .team-code {
          font-size: 24px;
          font-weight: bold;
          color: white;
          margin-left: auto;
        }

        .scroll-background {
          background-image: url("/images/scroll.svg");
          background-repeat: no-repeat;
          background-size: 100% 100%;
          background-position: center;
          display: flex;
          flex-direction: column;
          position: relative;
          z-index: 2;
          padding: 60px 20px 80px 20px;
          margin: 20px auto 0;
          width: 90vw;
          flex: 1;
          height: calc(100vh - 70px - 68px - 40px);
          overflow-y: auto;
        }

        @media (max-width < 800px) {
          .scroll-background {
            width: 95%;
            padding: 50px 15px 70px 15px;
          }

          .members-title {
            margin-top: -20px;
          }

          .team-actions {
            width: 90%;
            bottom: 70px;
          }

          .member-card {
            width: calc(100% - 8px);
            max-width: calc(100% - 8px);
          }
        }

        .members-container {
          display: flex;
          flex-direction: column;
          width: 100%;
          flex: 1;
        }

        .members-title {
          font-size: 20px;
          font-weight: bold;
          margin-bottom: 15px;
          color: #68543c;
          text-align: center;
          margin-top: -50px;
        }

        .members-content {
          flex: 1;
          display: flex;
          flex-direction: column;
          padding: 10px;
          min-height: 200px;
        }

        .members-list {
          display: flex;
          flex-direction: column;
          gap: 8px;
          width: 100%;
          align-items: center;
          flex: 1;
        }

        .member-card {
          background-color: white;
          border-radius: 6px;
          padding: 10px;
          display: flex;
          align-items: center;
          justify-content: center;
          box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
          border: 1px solid #eaeaea;
          width: 100%;
          max-width: 320px;
          margin: 0 auto 8px auto;
        }

        .member-avatar {
          font-size: 20px;
          margin-right: 12px;
        }

        .member-name {
          font-weight: 600;
          font-size: 14px;
          text-align: center;
        }

        .empty-state {
          text-align: center;
          padding: 20px;
          color: #888;
          width: 80%;
          max-width: 400px;
          background-color: rgba(255, 255, 255, 0.7);
          border-radius: 8px;
          margin: 20px auto;
          font-size: 14px;
        }

        .team-actions {
          display: flex;
          gap: 10px;
          padding: 10px 20px;
          position: fixed;
          bottom: 80px;
          left: 0;
          right: 0;
          z-index: 5;
          width: 80%;
          max-width: 450px;
          margin: 0 auto;
        }

        .action-button {
          flex: 1;
          padding: 15px;
          border: none;
          border-radius: 8px;
          font-weight: bold;
          cursor: pointer;
          box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
        }

        .leave-button {
          background-color: #f6bd60;
          color: #333;
        }

        .start-button {
          background-color: #588157;
          color: white;
        }

        @media (max-height: 500px) {
          .content-wrapper {
            padding-top: 60px;
          }

          .scroll-background {
            padding: 40px 15px 60px 15px;
          }

          .members-title {
            margin-top: -15px;
            font-size: 18px;
          }

          .team-actions {
            bottom: 75px;
          }
        }
      `}</style>
    </div>
  );
}