import { Variants } from 'framer-motion';

/**
 * Common animation variants for Framer Motion
 * Provides consistent animations across the application
 */

export const fadeInUp: Variants = {
  hidden: {
    opacity: 0,
    y: 30,
  },
  visible: {
    opacity: 1,
    y: 0,
    transition: {
      duration: 0.6,
      ease: 'easeOut',
    },
  },
};

export const fadeInDown: Variants = {
  hidden: {
    opacity: 0,
    y: -30,
  },
  visible: {
    opacity: 1,
    y: 0,
    transition: {
      duration: 0.6,
      ease: 'easeOut',
    },
  },
};

export const fadeInLeft: Variants = {
  hidden: {
    opacity: 0,
    x: -30,
  },
  visible: {
    opacity: 1,
    x: 0,
    transition: {
      duration: 0.6,
      ease: 'easeOut',
    },
  },
};

export const fadeInRight: Variants = {
  hidden: {
    opacity: 0,
    x: 30,
  },
  visible: {
    opacity: 1,
    x: 0,
    transition: {
      duration: 0.6,
      ease: 'easeOut',
    },
  },
};

export const fadeIn: Variants = {
  hidden: {
    opacity: 0,
  },
  visible: {
    opacity: 1,
    transition: {
      duration: 0.6,
      ease: 'easeOut',
    },
  },
};

export const scaleIn: Variants = {
  hidden: {
    opacity: 0,
    scale: 0.8,
  },
  visible: {
    opacity: 1,
    scale: 1,
    transition: {
      duration: 0.6,
      ease: 'easeOut',
    },
  },
};

export const slideInUp: Variants = {
  hidden: {
    y: '100%',
    opacity: 0,
  },
  visible: {
    y: '0%',
    opacity: 1,
    transition: {
      duration: 0.6,
      ease: 'easeOut',
    },
  },
};

export const slideInDown: Variants = {
  hidden: {
    y: '-100%',
    opacity: 0,
  },
  visible: {
    y: '0%',
    opacity: 1,
    transition: {
      duration: 0.6,
      ease: 'easeOut',
    },
  },
};

export const staggerContainer: Variants = {
  hidden: {},
  visible: {
    transition: {
      staggerChildren: 0.1,
      delayChildren: 0.1,
    },
  },
};

export const staggerFast: Variants = {
  hidden: {},
  visible: {
    transition: {
      staggerChildren: 0.05,
    },
  },
};

export const staggerSlow: Variants = {
  hidden: {},
  visible: {
    transition: {
      staggerChildren: 0.2,
    },
  },
};

// Hover animations
export const hoverScale: Variants = {
  hover: {
    scale: 1.05,
    transition: {
      duration: 0.2,
      ease: 'easeInOut',
    },
  },
};

export const hoverLift: Variants = {
  hover: {
    y: -5,
    transition: {
      duration: 0.2,
      ease: 'easeInOut',
    },
  },
};

export const hoverGlow: Variants = {
  hover: {
    boxShadow: '0 0 30px rgba(0, 122, 255, 0.3)',
    transition: {
      duration: 0.3,
      ease: 'easeInOut',
    },
  },
};

// Specialized animations for CHORUS components
export const orchestrationFlow: Variants = {
  hidden: {
    pathLength: 0,
    opacity: 0,
  },
  visible: {
    pathLength: 1,
    opacity: 1,
    transition: {
      pathLength: {
        duration: 2,
        ease: 'easeInOut',
      },
      opacity: {
        duration: 0.3,
      },
    },
  },
};

export const dataFlow: Variants = {
  hidden: {
    opacity: 0,
    scale: 0,
  },
  visible: (i: number) => ({
    opacity: 1,
    scale: 1,
    transition: {
      delay: i * 0.2,
      duration: 0.5,
      ease: 'easeOut',
    },
  }),
};

export const pulseAnimation: Variants = {
  pulse: {
    scale: [1, 1.1, 1],
    opacity: [1, 0.8, 1],
    transition: {
      duration: 2,
      repeat: Infinity,
      ease: 'easeInOut',
    },
  },
};

export const rotateAnimation: Variants = {
  rotate: {
    rotate: 360,
    transition: {
      duration: 2,
      repeat: Infinity,
      ease: 'linear',
    },
  },
};

// Page transition animations
export const pageTransition: Variants = {
  initial: {
    opacity: 0,
    y: 20,
  },
  animate: {
    opacity: 1,
    y: 0,
    transition: {
      duration: 0.4,
      ease: 'easeOut',
    },
  },
  exit: {
    opacity: 0,
    y: -20,
    transition: {
      duration: 0.3,
      ease: 'easeIn',
    },
  },
};

// Modal animations
export const modalBackdrop: Variants = {
  hidden: {
    opacity: 0,
  },
  visible: {
    opacity: 1,
    transition: {
      duration: 0.3,
    },
  },
};

export const modalContent: Variants = {
  hidden: {
    opacity: 0,
    scale: 0.8,
    y: 50,
  },
  visible: {
    opacity: 1,
    scale: 1,
    y: 0,
    transition: {
      duration: 0.4,
      ease: 'easeOut',
    },
  },
};

// Loading animations
export const spinnerAnimation: Variants = {
  spin: {
    rotate: 360,
    transition: {
      duration: 1,
      repeat: Infinity,
      ease: 'linear',
    },
  },
};

export const dotsLoading: Variants = {
  loading: {
    scale: [1, 1.2, 1],
    opacity: [1, 0.6, 1],
    transition: {
      duration: 0.8,
      repeat: Infinity,
      ease: 'easeInOut',
    },
  },
};

// Apple-inspired easing curves
export const appleEasing = [0.21, 1.11, 0.81, 0.99]; // Apple's signature cubic-bezier
export const appleSpring = {
  type: 'spring',
  stiffness: 400,
  damping: 30,
  mass: 1,
};

// Advanced parallax animations
export const parallaxSlow: Variants = {
  hidden: { y: 0, opacity: 0 },
  visible: { 
    y: 0, 
    opacity: 1,
    transition: {
      duration: 1,
      ease: appleEasing,
    },
  },
};

export const parallaxMedium: Variants = {
  hidden: { y: 0, opacity: 0 },
  visible: { 
    y: 0, 
    opacity: 1,
    transition: {
      duration: 0.8,
      ease: appleEasing,
    },
  },
};

export const parallaxFast: Variants = {
  hidden: { y: 0, opacity: 0 },
  visible: { 
    y: 0, 
    opacity: 1,
    transition: {
      duration: 0.6,
      ease: appleEasing,
    },
  },
};

// Gradient text animation
export const gradientTextAnimation: Variants = {
  initial: {
    backgroundPosition: '0% 50%',
  },
  animate: {
    backgroundPosition: ['0% 50%', '100% 50%', '0% 50%'],
    transition: {
      duration: 5,
      repeat: Infinity,
      ease: 'easeInOut',
    },
  },
};

// Advanced button hover states
export const appleButtonHover: Variants = {
  initial: {
    scale: 1,
    boxShadow: '0 4px 14px 0 rgba(0, 122, 255, 0.25)',
  },
  hover: {
    scale: 1.05,
    boxShadow: '0 8px 25px 0 rgba(0, 122, 255, 0.4)',
    transition: {
      duration: 0.2,
      ease: 'easeOut',
    },
  },
  tap: {
    scale: 0.98,
    transition: {
      duration: 0.1,
    },
  },
};

// Hero entrance animations
export const heroEntrance: Variants = {
  hidden: {
    opacity: 0,
    y: 60,
    scale: 0.95,
  },
  visible: {
    opacity: 1,
    y: 0,
    scale: 1,
    transition: {
      duration: 0.8,
      ease: appleEasing,
    },
  },
};

// Staggered hero container
export const heroStaggerContainer: Variants = {
  hidden: {},
  visible: {
    transition: {
      staggerChildren: 0.2,
      delayChildren: 0.3,
    },
  },
};

// Floating elements animation
export const floatingAnimation: Variants = {
  initial: {
    y: 0,
    rotate: 0,
  },
  animate: {
    y: [-10, 10, -10],
    rotate: [-2, 2, -2],
    transition: {
      duration: 6,
      repeat: Infinity,
      ease: 'easeInOut',
    },
  },
};

// Geometric shape animations
export const geometricShapeAnimation: Variants = {
  initial: {
    scale: 1,
    opacity: 0.2,
    rotate: 0,
  },
  animate: {
    scale: [1, 1.5, 1],
    opacity: [0.2, 0.8, 0.2],
    rotate: [0, 360],
    transition: {
      duration: 8,
      repeat: Infinity,
      ease: 'easeInOut',
    },
  },
};

// Interactive hover glow effect
export const interactiveGlow: Variants = {
  initial: {
    boxShadow: '0 0 0 rgba(0, 122, 255, 0)',
  },
  hover: {
    boxShadow: '0 0 30px rgba(0, 122, 255, 0.3)',
    transition: {
      duration: 0.3,
      ease: 'easeOut',
    },
  },
};

// Advanced scroll-triggered animations
export const scrollReveal: Variants = {
  hidden: {
    opacity: 0,
    y: 75,
    scale: 0.9,
  },
  visible: {
    opacity: 1,
    y: 0,
    scale: 1,
    transition: {
      duration: 0.8,
      ease: appleEasing,
    },
  },
};

// Performance-optimized fade variants
export const performantFade: Variants = {
  hidden: {
    opacity: 0,
    transform: 'translateY(20px) translateZ(0)',
  },
  visible: {
    opacity: 1,
    transform: 'translateY(0px) translateZ(0)',
    transition: {
      duration: 0.6,
      ease: appleEasing,
    },
  },
};

// Utility functions for animations
export const createStaggeredAnimation = (
  baseAnimation: Variants,
  staggerDelay: number = 0.1
): Variants => ({
  ...baseAnimation,
  visible: {
    ...baseAnimation.visible,
    transition: {
      ...baseAnimation.visible?.transition,
      staggerChildren: staggerDelay,
    },
  },
});

export const createDelayedAnimation = (
  baseAnimation: Variants,
  delay: number
): Variants => ({
  ...baseAnimation,
  visible: {
    ...baseAnimation.visible,
    transition: {
      ...baseAnimation.visible?.transition,
      delay,
    },
  },
});

export const createCustomEasing = (
  baseAnimation: Variants,
  ease: string | number[]
): Variants => ({
  ...baseAnimation,
  visible: {
    ...baseAnimation.visible,
    transition: {
      ...baseAnimation.visible?.transition,
      ease,
    },
  },
});

// Parallax utility function
export const createParallaxAnimation = (
  speed: number,
  direction: 'up' | 'down' | 'left' | 'right' = 'up'
) => {
  const axis = direction === 'left' || direction === 'right' ? 'x' : 'y';
  const multiplier = direction === 'down' || direction === 'right' ? 1 : -1;
  
  return {
    [axis]: `${speed * multiplier * 100}px`,
  };
};

// Scroll-based animation utility
export const createScrollAnimation = (
  element: React.RefObject<HTMLElement>,
  options: {
    start?: number;
    end?: number;
    property: string;
    from: any;
    to: any;
  }
) => {
  // This would be used with useScroll and useTransform hooks
  return {
    scrollTrigger: {
      trigger: element.current,
      start: options.start || 0,
      end: options.end || 1000,
      scrub: true,
    },
    [options.property]: [options.from, options.to],
  };
};

// Reduced motion variants for accessibility
export const createReducedMotionVariant = (baseVariant: Variants): Variants => {
  const prefersReducedMotion = typeof window !== 'undefined' && 
    window.matchMedia('(prefers-reduced-motion: reduce)').matches;
  
  if (prefersReducedMotion) {
    return {
      ...baseVariant,
      visible: {
        ...baseVariant.visible,
        transition: {
          duration: 0.01, // Nearly instant
        },
      },
    };
  }
  
  return baseVariant;
};

// Apple-style elastic animation
export const elasticAnimation = {
  type: 'spring',
  stiffness: 500,
  damping: 25,
  mass: 0.8,
};

// Magnetic effect for interactive elements
export const magneticEffect = {
  hover: {
    scale: 1.1,
    transition: {
      type: 'spring',
      stiffness: 400,
      damping: 10,
    },
  },
  tap: {
    scale: 0.95,
    transition: {
      type: 'spring',
      stiffness: 600,
      damping: 15,
    },
  },
};