"use client";

import { useState, useCallback } from "react";
import { AlertTriangle, Send, X, Bug } from "lucide-react";

// ── Feedback submission API ──
async function submitFeedback(data: {
  url: string;
  error: string;
  message?: string;
  userAgent: string;
}) {
  try {
    const res = await fetch("/mobile/api/feedback", {
      method: "POST",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify(data),
    });
    return res.ok;
  } catch {
    return false; // silently fail — we don't want a feedback-on-feedback loop
  }
}

// ── Friendly error messages map ──
const FRIENDLY_MESSAGES: Record<string, { title: string; description: string }> = {
  default: {
    title: "A small glitch 🛠️",
    description:
      "Something didn't load quite right. Don't worry — we're on it! Try again or drop us a report so we can fix it faster.",
  },
  location: {
    title: "Location not available 📡",
    description:
      "We couldn't detect your location. Make sure location services are enabled, or try refreshing. The compass will work even without location!",
  },
  network: {
    title: "Connection hiccup 🌐",
    description:
      "Looks like the signal dropped for a moment. Check your connection and try again. If it persists, let us know!",
  },
  auth: {
    title: "Session expired 🔑",
    description:
      "Your session ran out — it happens! Just sign in again and you'll be right back where you were.",
  },
  upgrade: {
    title: "Premium feature ✨",
    description:
      "This feature needs an upgrade. Check your plan details to unlock it!",
  },
};

type ErrorKind = keyof typeof FRIENDLY_MESSAGES;

interface ErrorFeedbackProps {
  /** The raw error message from the system */
  error: string;
  /** Category of error for friendly message mapping */
  kind?: ErrorKind;
  /** Callback to retry the action */
  onRetry?: () => void;
  /** Additional context for debugging */
  context?: string;
}

export default function ErrorFeedback({
  error,
  kind = "default",
  onRetry,
  context,
}: ErrorFeedbackProps) {
  const [showForm, setShowForm] = useState(false);
  const [userMessage, setUserMessage] = useState("");
  const [sent, setSent] = useState(false);
  const [sending, setSending] = useState(false);

  const friendly = FRIENDLY_MESSAGES[kind] || FRIENDLY_MESSAGES.default;

  const handleSend = useCallback(async () => {
    setSending(true);
    const ok = await submitFeedback({
      url: window.location.href,
      error: error + (context ? ` [${context}]` : ""),
      message: userMessage,
      userAgent: navigator.userAgent,
    });
    setSent(true);
    setSending(false);
    if (ok) {
      setTimeout(() => setShowForm(false), 2000);
    }
  }, [error, context, userMessage]);

  return (
    <div className="mx-4 mb-4">
      <div className="bg-amber-900/10 border border-amber-700/30 rounded-2xl p-5">
        {/* ── Friendly header ── */}
        <div className="flex items-start gap-3">
          <div className="w-10 h-10 rounded-xl bg-amber-900/20 flex items-center justify-center shrink-0 mt-0.5">
            <AlertTriangle size={20} className="text-amber-400" />
          </div>
          <div className="flex-1 min-w-0">
            <h3 className="text-sm font-semibold text-amber-200 mb-1">
              {friendly.title}
            </h3>
            <p className="text-xs text-amber-300/70 leading-relaxed">
              {friendly.description}
            </p>
          </div>
        </div>

        {/* ── Actions ── */}
        <div className="flex flex-wrap gap-2 mt-4">
          {onRetry && (
            <button
              onClick={onRetry}
              className="flex-1 min-w-[80px] px-4 py-3 bg-amber-900/20 hover:bg-amber-900/30 border border-amber-700/30 text-amber-300 text-sm font-medium rounded-xl active:scale-95 transition min-h-[44px]"
            >
              Try Again
            </button>
          )}

          <button
            onClick={() => setShowForm((s) => !s)}
            className="flex-1 min-w-[80px] px-4 py-3 bg-gray-800/60 hover:bg-gray-700/60 border border-gray-700/40 text-gray-300 text-sm rounded-xl active:scale-95 transition min-h-[44px] flex items-center justify-center gap-1.5"
          >
            <Bug size={14} />
            Report Issue
          </button>
        </div>

        {/* ── Feedback form (expandable) ── */}
        {showForm && (
          <div className="mt-4 pt-4 border-t border-amber-800/20">
            {sent ? (
              <p className="text-xs text-emerald-400 text-center">
                ✓ Thanks! Your report helps us improve.
              </p>
            ) : (
              <>
                <p className="text-xs text-amber-300/60 mb-2">
                  What happened? (optional — helps us fix it faster)
                </p>
                <textarea
                  value={userMessage}
                  onChange={(e) => setUserMessage(e.target.value)}
                  placeholder="e.g. The page was blank, then this showed up..."
                  rows={2}
                  className="w-full bg-gray-900/60 border border-gray-700/40 rounded-xl px-3 py-2 text-xs text-gray-300 placeholder:text-gray-600 resize-none focus:outline-none focus:border-amber-700/50"
                />
                <div className="flex gap-2 mt-2">
                  <button
                    onClick={handleSend}
                    disabled={sending}
                    className="flex-1 px-4 py-2.5 bg-amber-600/20 hover:bg-amber-600/30 border border-amber-600/30 text-amber-300 text-xs font-medium rounded-xl active:scale-95 transition min-h-[40px] disabled:opacity-50 flex items-center justify-center gap-1.5"
                  >
                    <Send size={12} />
                    {sending ? "Sending..." : "Send Report"}
                  </button>
                  <button
                    onClick={() => setShowForm(false)}
                    className="px-3 py-2.5 bg-gray-800/40 border border-gray-700/30 text-gray-500 text-xs rounded-xl active:scale-95 transition min-h-[40px]"
                  >
                    <X size={14} />
                  </button>
                </div>
              </>
            )}
          </div>
        )}
      </div>
    </div>
  );
}