import { useState, useEffect } from 'react';
import { Dimensions, Platform } from 'react-native';

export type DeviceType = 'mobile' | 'tablet' | 'tv';

export interface ResponsiveConfig {
  deviceType: DeviceType;
  columns: number;
  cardWidth: number;
  cardHeight: number;
  spacing: number;
  isPortrait: boolean;
  screenWidth: number;
  screenHeight: number;
}

const BREAKPOINTS = {
  mobile: { min: 0, max: 767 },
  tablet: { min: 768, max: 1023 },
  tv: { min: 1024, max: Infinity }
};

const getDeviceType = (width: number): DeviceType => {
  const isTV = process.env.EXPO_TV === '1' || Platform.isTV;
  if (isTV) return 'tv';
  
  if (width >= BREAKPOINTS.tv.min) return 'tv';
  if (width >= BREAKPOINTS.tablet.min) return 'tablet';
  return 'mobile';
};

const getLayoutConfig = (deviceType: DeviceType, width: number, height: number, isPortrait: boolean): ResponsiveConfig => {
  const spacing = deviceType === 'mobile' ? 8 : deviceType === 'tablet' ? 12 : 16;
  
  let columns: number;
  let cardWidth: number;
  let cardHeight: number;

  switch (deviceType) {
    case 'mobile':
      columns = isPortrait ? 2 : 3;
      cardWidth = (width - spacing * (columns + 1)) / columns;
      cardHeight = cardWidth * 1.5; // 2:3 aspect ratio
      break;
    
    case 'tablet':
      columns = isPortrait ? 3 : 4;
      cardWidth = (width - spacing * (columns + 1)) / columns;
      cardHeight = cardWidth * 1.4; // slightly less tall ratio
      break;
    
    case 'tv':
    default:
      columns = 5;
      cardWidth = 160; // Fixed width for TV
      cardHeight = 240; // Fixed height for TV
      break;
  }

  return {
    deviceType,
    columns,
    cardWidth,
    cardHeight,
    spacing,
    isPortrait,
    screenWidth: width,
    screenHeight: height,
  };
};

export const useResponsiveLayout = (): ResponsiveConfig => {
  const [dimensions, setDimensions] = useState(() => {
    const { width, height } = Dimensions.get('window');
    return { width, height };
  });

  useEffect(() => {
    const subscription = Dimensions.addEventListener('change', ({ window }) => {
      setDimensions({ width: window.width, height: window.height });
    });

    return () => subscription?.remove();
  }, []);

  const { width, height } = dimensions;
  const isPortrait = height > width;
  const deviceType = getDeviceType(width);
  
  return getLayoutConfig(deviceType, width, height, isPortrait);
};

// Utility hook for responsive values
export const useResponsiveValue = <T>(values: { mobile: T; tablet: T; tv: T }): T => {
  const { deviceType } = useResponsiveLayout();
  return values[deviceType];
};

// Utility hook for responsive styles
export const useResponsiveStyles = () => {
  const config = useResponsiveLayout();
  
  return {
    // Common responsive styles
    container: {
      paddingHorizontal: config.spacing,
    },
    
    // Card styles
    cardContainer: {
      width: config.cardWidth,
      height: config.cardHeight,
      marginBottom: config.spacing,
    },
    
    // Grid styles
    gridContainer: {
      paddingHorizontal: config.spacing / 2,
    },
    
    // Typography
    titleFontSize: config.deviceType === 'mobile' ? 18 : config.deviceType === 'tablet' ? 22 : 28,
    bodyFontSize: config.deviceType === 'mobile' ? 14 : config.deviceType === 'tablet' ? 16 : 18,
    
    // Spacing
    sectionSpacing: config.deviceType === 'mobile' ? 16 : config.deviceType === 'tablet' ? 20 : 24,
    itemSpacing: config.spacing,
  };
};