'use client';

import { useCallback, useState, type ComponentType } from 'react';
import { useMiniApp } from '@neynar/react';
import { ShareButton } from '../Share';
import { Button } from '../Button';
import { SignIn } from '../wallet/SignIn';
import { type Haptics } from '@farcaster/miniapp-sdk';
import { APP_URL } from '~/lib/constants';

// Optional import for NeynarAuthButton - may not exist in all templates
let NeynarAuthButton: ComponentType | null = null;
try {
  const module = require('../NeynarAuthButton/index');
  NeynarAuthButton = module.NeynarAuthButton;
} catch (error) {
  // Component doesn't exist, that's okay
  console.log('NeynarAuthButton not available in this template');
}


/**
 * ActionsTab component handles mini app actions like sharing, notifications, and haptic feedback.
 *
 * This component provides the main interaction interface for users to:
 * - Share the mini app with others
 * - Sign in with Farcaster
 * - Send notifications to their account
 * - Trigger haptic feedback
 * - Add the mini app to their client
 * - Copy share URLs
 *
 * The component uses the useMiniApp hook to access Farcaster context and actions.
 * All state is managed locally within this component.
 *
 * @example
 * ```tsx
 * <ActionsTab />
 * ```
 */
export function ActionsTab() {
  // --- Hooks ---
  const { actions, added, notificationDetails, haptics, context } =
    useMiniApp();

  // --- State ---
  const [notificationState, setNotificationState] = useState({
    sendStatus: '',
    shareUrlCopied: false,
  });
  const [selectedHapticIntensity, setSelectedHapticIntensity] =
    useState<Haptics.ImpactOccurredType>('medium');

  // --- Handlers ---
  /**
   * Sends a notification to the current user's Farcaster account.
   *
   * This function makes a POST request to the /api/send-notification endpoint
   * with the user's FID and notification details. It handles different response
   * statuses including success (200), rate limiting (429), and errors.
   *
   * @returns Promise that resolves when the notification is sent or fails
   */
  const sendFarcasterNotification = useCallback(async () => {
    setNotificationState((prev) => ({ ...prev, sendStatus: '' }));
    if (!notificationDetails || !context) {
      return;
    }
    try {
      const response = await fetch('/api/send-notification', {
        method: 'POST',
        mode: 'same-origin',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({
          fid: context.user.fid,
          notificationDetails,
        }),
      });
      if (response.status === 200) {
        setNotificationState((prev) => ({ ...prev, sendStatus: 'Success' }));
        return;
      } else if (response.status === 429) {
        setNotificationState((prev) => ({
          ...prev,
          sendStatus: 'Rate limited',
        }));
        return;
      }
      const responseText = await response.text();
      setNotificationState((prev) => ({
        ...prev,
        sendStatus: `Error: ${responseText}`,
      }));
    } catch (error) {
      setNotificationState((prev) => ({
        ...prev,
        sendStatus: `Error: ${error}`,
      }));
    }
  }, [context, notificationDetails]);

  /**
   * Copies the share URL for the current user to the clipboard.
   *
   * This function generates a share URL using the user's FID and copies it
   * to the clipboard. It shows a temporary "Copied!" message for 2 seconds.
   */
  const copyUserShareUrl = useCallback(async () => {
    if (context?.user?.fid) {
      const userShareUrl = `${APP_URL}/share/${context.user.fid}`;
      await navigator.clipboard.writeText(userShareUrl);
      setNotificationState((prev) => ({ ...prev, shareUrlCopied: true }));
      setTimeout(
        () =>
          setNotificationState((prev) => ({ ...prev, shareUrlCopied: false })),
        2000
      );
    }
  }, [context?.user?.fid]);

  /**
   * Triggers haptic feedback with the selected intensity.
   *
   * This function calls the haptics.impactOccurred method with the current
   * selectedHapticIntensity setting. It handles errors gracefully by logging them.
   */
  const triggerHapticFeedback = useCallback(async () => {
    try {
      await haptics.impactOccurred(selectedHapticIntensity);
    } catch (error) {
      console.error('Haptic feedback failed:', error);
    }
  }, [haptics, selectedHapticIntensity]);

  // --- Render ---
  return (
    <div className="space-y-3 px-6 w-full max-w-md mx-auto">
      {/* Share functionality */}
      <ShareButton
        buttonText="Share Mini App"
        cast={{
          text: 'Check out this awesome frame @1 @2 @3! 🚀🪐',
          bestFriends: true,
          embeds: [`${APP_URL}/share/${context?.user?.fid || ''}`],
        }}
        className="w-full"
      />

      {/* Authentication */}
      <SignIn />

      {/* Neynar Authentication */}
      {NeynarAuthButton && <NeynarAuthButton />}

      {/* Mini app actions */}
      <Button
        onClick={() =>
          actions.openUrl('https://www.youtube.com/watch?v=dQw4w9WgXcQ')
        }
        className="w-full"
      >
        Open Link
      </Button>

      <Button onClick={actions.addMiniApp} disabled={added} className="w-full">
        Add Mini App to Client
      </Button>

      {/* Notification functionality */}
      {notificationState.sendStatus && (
        <div className="text-sm w-full">
          Send notification result: {notificationState.sendStatus}
        </div>
      )}
      <Button
        onClick={sendFarcasterNotification}
        disabled={!notificationDetails}
        className="w-full"
      >
        Send notification
      </Button>

      {/* Share URL copying */}
      <Button
        onClick={copyUserShareUrl}
        disabled={!context?.user?.fid}
        className="w-full"
      >
        {notificationState.shareUrlCopied ? 'Copied!' : 'Copy share URL'}
      </Button>

      {/* Haptic feedback controls */}
      <div className="space-y-2">
        <label className="block text-sm font-medium text-gray-700 dark:text-gray-300">
          Haptic Intensity
        </label>
        <select
          value={selectedHapticIntensity}
          onChange={(e) =>
            setSelectedHapticIntensity(
              e.target.value as Haptics.ImpactOccurredType
            )
          }
          className="w-full px-3 py-2 border border-gray-300 dark:border-gray-600 rounded-md bg-white dark:bg-gray-800 text-gray-900 dark:text-gray-100 focus:outline-none focus:ring-2 focus:ring-primary"
        >
          <option value={'light'}>Light</option>
          <option value={'medium'}>Medium</option>
          <option value={'heavy'}>Heavy</option>
          <option value={'soft'}>Soft</option>
          <option value={'rigid'}>Rigid</option>
        </select>
        <Button onClick={triggerHapticFeedback} className="w-full">
          Trigger Haptic Feedback
        </Button>
      </div>
    </div>
  );
}