'use client';

import { useState } from 'react';
import { api } from '~/trpc/react';
import { ScriptCard } from './ScriptCard';
import { ScriptDetailModal } from './ScriptDetailModal';
import type { ScriptCard as ScriptCardType, Script } from '~/types/script';

interface ScriptsGridProps {
  onInstallScript?: (scriptPath: string, scriptName: string) => void;
}

export function ScriptsGrid({ onInstallScript }: ScriptsGridProps) {
  const [selectedSlug, setSelectedSlug] = useState<string | null>(null);
  const [isModalOpen, setIsModalOpen] = useState(false);

  const { data: scriptCardsData, isLoading, error, refetch } = api.scripts.getScriptCards.useQuery();
  const { data: scriptData } = api.scripts.getScriptBySlug.useQuery(
    { slug: selectedSlug ?? '' },
    { enabled: !!selectedSlug }
  );

  // Debug logging
  console.log('ScriptsGrid render:', { 
    isLoading, 
    error: error?.message, 
    scriptCardsData: scriptCardsData?.success, 
    cardsCount: scriptCardsData?.cards?.length 
  });

  const handleCardClick = (scriptCard: ScriptCardType) => {
    setSelectedSlug(scriptCard.slug);
    setIsModalOpen(true);
  };

  const handleCloseModal = () => {
    setIsModalOpen(false);
    setSelectedSlug(null);
  };

  if (isLoading) {
    return (
      <div className="flex items-center justify-center py-12">
        <div className="animate-spin rounded-full h-8 w-8 border-b-2 border-blue-600"></div>
        <span className="ml-2 text-gray-600">Loading scripts...</span>
      </div>
    );
  }

  if (error || !scriptCardsData?.success) {
    return (
      <div className="text-center py-12">
        <div className="text-red-600 mb-4">
          <svg className="w-12 h-12 mx-auto mb-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-2.5L13.732 4c-.77-.833-1.964-.833-2.732 0L3.732 16.5c-.77.833.192 2.5 1.732 2.5z" />
          </svg>
          <p className="text-lg font-medium">Failed to load scripts</p>
          <p className="text-sm text-gray-500 mt-1">
            {scriptCardsData?.error || 'Unknown error occurred'}
          </p>
          <div className="mt-4 text-xs text-gray-400">
            <p>No JSON files found in scripts/json directory.</p>
            <p>Use the "Resync Scripts" button to download from GitHub.</p>
          </div>
        </div>
        <button
          onClick={() => refetch()}
          className="mt-4 px-4 py-2 bg-blue-600 text-white rounded-lg hover:bg-blue-700 transition-colors"
        >
          Try Again
        </button>
      </div>
    );
  }

  const scripts = scriptCardsData?.cards || [];

  if (!scripts || scripts.length === 0) {
    return (
      <div className="text-center py-12">
        <div className="text-gray-500">
          <svg className="w-12 h-12 mx-auto mb-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 12h6m-6 4h6m2 5H7a2 2 0 01-2-2V5a2 2 0 012-2h5.586a1 1 0 01.707.293l5.414 5.414a1 1 0 01.293.707V19a2 2 0 01-2 2z" />
          </svg>
          <p className="text-lg font-medium">No scripts found</p>
          <p className="text-sm text-gray-500 mt-1">
            No script files were found in the repository.
          </p>
        </div>
      </div>
    );
  }

  return (
    <>
      <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 xl:grid-cols-4 gap-6">
        {scripts.map((script, index) => {
          // Add validation to ensure script has required properties
          if (!script || typeof script !== 'object') {
            console.warn('Invalid script object at index', index, script);
            return null;
          }
          
          return (
            <ScriptCard
              key={script.slug || `script-${index}`}
              script={script}
              onClick={handleCardClick}
            />
          );
        })}
      </div>

      <ScriptDetailModal
        script={scriptData?.success ? scriptData.script : null}
        isOpen={isModalOpen}
        onClose={handleCloseModal}
        onInstallScript={onInstallScript}
      />
    </>
  );
}