import React, { useState, useEffect } from 'react';
import { AlertCircle, Axe, Box, Building, Cpu, Factory, Zap } from 'lucide-react';

const Game = () => {
  const [selectedTool, setSelectedTool] = useState(null);
  const [grid, setGrid] = useState(() => 
    Array(8).fill().map(() => Array(8).fill({ type: null, color: 'white' }))
  );
  const [resources, setResources] = useState({ energy: 50, minerals: 50, circuits: 0 });
  const [tick, setTick] = useState(0);
  const [researchProgress, setResearchProgress] = useState({ automation: 0, speed: 0 });
  const [message, setMessage] = useState('');

  const tools = {
    solarPanel: { 
      cost: { minerals: 10 }, 
      color: 'bg-yellow-200',
      produces: 'energy',
      icon: <Zap className="w-6 h-6" />
    },
    mineralExtractor: { 
      cost: { energy: 10 }, 
      color: 'bg-gray-300',
      produces: 'minerals',
      icon: <Box className="w-6 h-6" />
    },
    circuitFactory: { 
      cost: { energy: 15, minerals: 15 }, 
      color: 'bg-green-200',
      produces: 'circuits',
      icon: <Cpu className="w-6 h-6" />
    }
  };

  // Game tick for resource production
  useEffect(() => {
    const timer = setInterval(() => {
      setTick(t => t + 1);
      setResources(prev => {
        const newResources = { ...prev };
        grid.forEach(row => {
          row.forEach(cell => {
            if (cell.type && tools[cell.type]) {
              const produces = tools[cell.type].produces;
              newResources[produces] = (newResources[produces] || 0) + 1;
            }
          });
        });
        return newResources;
      });
    }, 1000);
    
    return () => clearInterval(timer);
  }, [grid]);

  const handleCellClick = (rowIndex, colIndex) => {
    if (!selectedTool) {
      setMessage('Select a building first!');
      return;
    }

    const tool = tools[selectedTool];
    const canAfford = Object.entries(tool.cost).every(
      ([resource, cost]) => resources[resource] >= cost
    );

    if (!canAfford) {
      setMessage('Not enough resources!');
      return;
    }

    // Deduct costs
    setResources(prev => {
      const newResources = { ...prev };
      Object.entries(tool.cost).forEach(([resource, cost]) => {
        newResources[resource] -= cost;
      });
      return newResources;
    });

    // Place building
    setGrid(prev => {
      const newGrid = [...prev];
      newGrid[rowIndex] = [...prev[rowIndex]];
      newGrid[rowIndex][colIndex] = {
        type: selectedTool,
        color: tool.color
      };
      return newGrid;
    });

    // Show success message
    setMessage(`Built ${selectedTool}!`);
    setTimeout(() => setMessage(''), 2000);
  };

  return (
    <div className="p-4 max-w-4xl mx-auto">
      {/* Resources */}
      <div className="grid grid-cols-3 gap-4 mb-6">
        <div className="p-3 bg-yellow-100 rounded-lg flex items-center gap-2">
          <Zap className="w-4 h-4" />
          <span>Energy: {resources.energy}</span>
        </div>
        <div className="p-3 bg-gray-100 rounded-lg flex items-center gap-2">
          <Box className="w-4 h-4" />
          <span>Minerals: {resources.minerals}</span>
        </div>
        <div className="p-3 bg-green-100 rounded-lg flex items-center gap-2">
          <Cpu className="w-4 h-4" />
          <span>Circuits: {resources.circuits}</span>
        </div>
      </div>

      {/* Tool Selection */}
      <div className="mb-6">
        <div className="flex gap-4 mb-4">
          {Object.entries(tools).map(([name, data]) => (
            <button
              key={name}
              onClick={() => setSelectedTool(name)}
              className={`p-4 rounded-lg flex flex-col items-center ${data.color} 
                ${selectedTool === name ? 'ring-2 ring-blue-500' : ''}`}
            >
              {data.icon}
              <span className="text-sm mt-2">{name.replace(/([A-Z])/g, ' $1').trim()}</span>
              <span className="text-xs mt-1">
                Cost: {Object.entries(data.cost).map(([r, c]) => `${c} ${r}`).join(', ')}
              </span>
            </button>
          ))}
        </div>
        {message && (
          <div className="text-center text-sm font-medium text-blue-600 mb-2">
            {message}
          </div>
        )}
      </div>

      {/* Game Grid */}
      <div className="grid grid-cols-8 gap-1 bg-gray-100 p-2 rounded-lg">
        {grid.map((row, rowIndex) => (
          row.map((cell, colIndex) => (
            <button
              key={`${rowIndex}-${colIndex}`}
              onClick={() => handleCellClick(rowIndex, colIndex)}
              className={`w-16 h-16 rounded-lg ${cell.type ? tools[cell.type].color : 'bg-white'} 
                hover:bg-opacity-80 transition-colors flex items-center justify-center`}
            >
              {cell.type && tools[cell.type].icon}
            </button>
          ))
        ))}
      </div>
    </div>
  );
};

export default Game;