peworkshop/app/(main)/admin/page.js

"use client";
import { useState, useEffect, useRef } from "react";
import { useSession } from "next-auth/react";
import { useRouter } from "next/navigation";

export default function AdminDashboard() {
  const { data: session, status } = useSession();
  const [timerActive, setTimerActive] = useState(false);
  const [loading, setLoading] = useState(true);
  const [error, setError] = useState("");
  const [elapsedTime, setElapsedTime] = useState(0); // in seconds
  const [timerDisplay, setTimerDisplay] = useState("--:--:--");
  const [presetHours, setPresetHours] = useState("");
  const [presetMinutes, setPresetMinutes] = useState("");
  const [presetSeconds, setPresetSeconds] = useState("");
  const [timerEndTime, setTimerEndTime] = useState(null);
  const timerRef = useRef(null);
  const router = useRouter();

  // Load timer status on page load
  useEffect(() => {
    async function loadTimerStatus() {
      try {
        const response = await fetch("/api/hunt/timer", {
          credentials: "include",
          headers: {
            "Cache-Control": "no-cache",
          },
        });
        const data = await response.json();

        if (data.active) {
          setTimerActive(true);

          // Calculate elapsed time
          if (data.startTime) {
            const startTime = new Date(data.startTime).getTime();
            const currentTime = Date.now();
            const elapsed = Math.floor((currentTime - startTime) / 1000);
            setElapsedTime(elapsed);
          }

          // If there's an end time, set it
          if (data.endTime) {
            setTimerEndTime(new Date(data.endTime).getTime());
          }
        }

        setLoading(false);
      } catch (err) {
        console.error("Failed to load timer status:", err);
        setError("Failed to load timer status");
        setLoading(false);
      }
    }

    if (status === "authenticated") {
      loadTimerStatus();
    }
  }, [status]);

  // Check if user is admin
  useEffect(() => {
    if (status === "authenticated") {
      if (session?.user?.role !== "admin") {
        router.push("/team-selection");
      }
    } else if (status === "unauthenticated") {
      router.push("/login");
    }
  }, [session, status, router]);

  // Timer update effect
  useEffect(() => {
    if (timerActive) {
      timerRef.current = setInterval(() => {
        setElapsedTime((prev) => {
          const newElapsed = prev + 1;

          // If we have an end time and we've reached it, stop the timer
          if (timerEndTime && Date.now() >= timerEndTime) {
            stopTimer();
            return prev;
          }

          // Update the display
          formatTimeDisplay(newElapsed);
          return newElapsed;
        });
      }, 1000);
    } else {
      if (timerRef.current) {
        clearInterval(timerRef.current);
      }
    }

    return () => {
      if (timerRef.current) {
        clearInterval(timerRef.current);
      }
    };
  }, [timerActive, timerEndTime]);

  // Format time for display whenever elapsed time changes
  useEffect(() => {
    formatTimeDisplay(elapsedTime);
  }, [elapsedTime]);

  // Format seconds into HH:MM:SS
  const formatTimeDisplay = (totalSeconds) => {
    if (!timerActive) {
      setTimerDisplay("--:--:--");
      return;
    }

    const hours = Math.floor(totalSeconds / 3600);
    const minutes = Math.floor((totalSeconds % 3600) / 60);
    const seconds = totalSeconds % 60;

    const display = [
      hours.toString().padStart(2, "0"),
      minutes.toString().padStart(2, "0"),
      seconds.toString().padStart(2, "0"),
    ].join(":");

    setTimerDisplay(display);
  };

  const startTimer = async (preset = false) => {
    setLoading(true);
    try {
      let endTime = null;

      // If using preset, calculate the end time
      if (preset) {
        const hours = parseInt(presetHours || "0");
        const minutes = parseInt(presetMinutes || "0");
        const seconds = parseInt(presetSeconds || "0");

        // Validate input
        if (isNaN(hours) || isNaN(minutes) || isNaN(seconds)) {
          setError(
            "Please enter valid numbers for hours, minutes, and seconds"
          );
          setLoading(false);
          return;
        }

        // Calculate total duration in milliseconds
        const durationMs = (hours * 3600 + minutes * 60 + seconds) * 1000;
        if (durationMs <= 0) {
          setError("Please enter a duration greater than zero");
          setLoading(false);
          return;
        }

        // Set end time
        endTime = new Date(Date.now() + durationMs).toISOString();
      }

      // API call to start timer
      const response = await fetch("/api/hunt/timer", {
        method: "POST",
        headers: {
          "Content-Type": "application/json",
        },
        body: JSON.stringify({
          action: "start",
          endTime: endTime,
        }),
      });

      const data = await response.json();

      if (data.success) {
        setTimerActive(true);
        setElapsedTime(0);

        if (endTime) {
          setTimerEndTime(new Date(endTime).getTime());
        } else {
          setTimerEndTime(null);
        }

        setError("");
      } else {
        setError(data.error || "Failed to start timer");
      }
    } catch (err) {
      console.error("Failed to start timer:", err);
      setError("Failed to start timer");
    } finally {
      setLoading(false);
    }
  };

  const stopTimer = async () => {
    setLoading(true);
    try {
      const response = await fetch("/api/hunt/timer", {
        method: "POST",
        headers: {
          "Content-Type": "application/json",
        },
        body: JSON.stringify({ action: "stop" }),
      });

      const data = await response.json();

      if (data.success) {
        setTimerActive(false);
        setTimerEndTime(null);
        setError("");
      } else {
        setError(data.error || "Failed to stop timer");
      }
    } catch (err) {
      console.error("Failed to stop timer:", err);
      setError("Failed to stop timer");
    } finally {
      setLoading(false);
    }
  };

  const startPresetTimer = () => {
    startTimer(true);
  };

  // Handle access denied and loading states
  if (status === "loading" || loading) {
    return <div className="admin-page loading">Loading...</div>;
  }

  if (status === "unauthenticated") {
    return null; // Will redirect via useEffect
  }

  if (session?.user?.role !== "admin") {
    return null; // Will redirect via useEffect
  }

  return (
    <div className="admin-page">
      <div className="page-header">
        <div className="page-title">Admin Dashboard</div>
        <div className="placeholder"></div>
      </div>

      <div className="admin-content">
        <div className="timer-display-container">
          <h2>Hunt Timer</h2>
          <div className="timer-display">{timerDisplay}</div>

          <div className="timer-controls">
            <button
              className="admin-button"
              onClick={stopTimer}
              disabled={!timerActive || loading}
            >
              Stop Timer
            </button>
            <button
              className="admin-button"
              onClick={() => startTimer(false)}
              disabled={timerActive || loading}
            >
              Start Timer
            </button>
          </div>

          <div className="preset-timer-container">
            <h3>Set Timer Duration</h3>
            <div className="preset-inputs">
              <div className="time-input">
                <label>Hours</label>
                <input
                  type="number"
                  min="0"
                  value={presetHours}
                  onChange={(e) => setPresetHours(e.target.value)}
                  disabled={timerActive || loading}
                  className="admin-input"
                />
              </div>
              <div className="time-input">
                <label>Minutes</label>
                <input
                  type="number"
                  min="0"
                  max="59"
                  value={presetMinutes}
                  onChange={(e) => setPresetMinutes(e.target.value)}
                  disabled={timerActive || loading}
                  className="admin-input"
                />
              </div>
              <div className="time-input">
                <label>Seconds</label>
                <input
                  type="number"
                  min="0"
                  max="59"
                  value={presetSeconds}
                  onChange={(e) => setPresetSeconds(e.target.value)}
                  disabled={timerActive || loading}
                  className="admin-input"
                />
              </div>
            </div>

            <button
              className="admin-button"
              onClick={startPresetTimer}
              disabled={timerActive || loading}
            >
              Start Preset Timer
            </button>
          </div>

          {error && <p className="error-message">{error}</p>}
        </div>
      </div>

      <style jsx>{`
        .admin-page {
          display: flex;
          flex-direction: column;
          min-height: 100vh;
          background-color: #f4e9dc;
        }

        .page-header {
          display: flex;
          justify-content: center;
          align-items: center;
          padding: 1rem;
          background-color: #68543c;
          color: white;
        }

        .page-title {
          font-size: 1.2rem;
          font-weight: 600;
        }

        .placeholder {
          width: 40px;
          display: none;
        }

        .admin-content {
          flex: 1;
          padding: 1rem;
          display: flex;
          flex-direction: column;
          align-items: center;
        }

        .timer-display-container {
          width: 100%;
          max-width: 500px;
          background-color: white;
          border-radius: 8px;
          padding: 2rem;
          box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
          text-align: center;
        }

        .timer-display {
          font-size: 3rem;
          font-weight: 700;
          font-family: monospace;
          padding: 1.5rem 0;
        }

        .timer-controls {
          display: flex;
          gap: 1rem;
          margin-bottom: 2rem;
        }

        .admin-button {
          background-color: #68543c;
          color: white;
          border: none;
          border-radius: 4px;
          padding: 0.75rem 1rem;
          font-size: 1rem;
          cursor: pointer;
          flex: 1;
        }

        .admin-button:disabled {
          background-color: #d0c8c0;
          cursor: not-allowed;
        }

        .preset-timer-container {
          margin-top: 1.5rem;
          padding-top: 1.5rem;
          border-top: 1px solid #eee;
        }

        .preset-inputs {
          display: flex;
          justify-content: space-between;
          gap: 1rem;
          margin-bottom: 1rem;
        }

        .time-input {
          flex: 1;
          display: flex;
          flex-direction: column;
        }

        .admin-input {
          padding: 0.5rem;
          border: 1px solid #ccc;
          border-radius: 4px;
          font-size: 1rem;
          text-align: center;
        }

        .error-message {
          color: red;
          margin-top: 1rem;
        }
      `}</style>
    </div>
  );
}