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perf: fetch commitment history in parallel in RecentActivityFeed (Closes #1396) #1725

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perf: fetch commitment history in parallel in RecentActivityFeed (Closes #1396) #1725

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275 changes: 275 additions & 0 deletions src/components/Skeleton.tsx
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Original file line number Diff line number Diff line change
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'use client';

import React, { useEffect, useState } from 'react';
import { clsx, type ClassValue } from 'clsx';
import { twMerge } from 'tailwind-merge';

function cn(...inputs: ClassValue[]) {
return twMerge(clsx(inputs));
}

interface SkeletonProps {
className?: string;
width?: string | number;
height?: string | number;
rounded?: 'none' | 'sm' | 'md' | 'lg' | 'xl' | 'full';
shimmer?: boolean;
}

/**
* Base skeleton component with reduced motion support
*
* Accessibility considerations:
* - Uses `prefers-reduced-motion` media query to disable animations
* - Provides static loading state for users with motion sensitivity
* - Includes aria-label for screen readers
*/
export function Skeleton({
className,
width,
height,
rounded = 'md',
shimmer = true,
}: SkeletonProps) {
const [prefersReducedMotion, setPrefersReducedMotion] = useState(false);

useEffect(() => {
// Check for reduced motion preference
const mediaQuery = window.matchMedia('(prefers-reduced-motion: reduce)');
setPrefersReducedMotion(mediaQuery.matches);

const handleChange = (e: MediaQueryListEvent) => {
setPrefersReducedMotion(e.matches);
};

mediaQuery.addEventListener('change', handleChange);
return () => mediaQuery.removeEventListener('change', handleChange);
}, []);

const borderRadius = {
none: 'rounded-none',
sm: 'rounded-sm',
md: 'rounded-md',
lg: 'rounded-lg',
xl: 'rounded-xl',
full: 'rounded-full',
}[rounded];

const style: React.CSSProperties = {};
if (width) style.width = typeof width === 'number' ? `${width}px` : width;
if (height) style.height = typeof height === 'number' ? `${height}px` : height;

return (
<div
className={cn('relative overflow-hidden bg-[#1a1a1a]', borderRadius, className)}
style={style}
aria-label="Loading content"
role="status"
>
{/* Base background */}
<div className="absolute inset-0 bg-gradient-to-r from-[#1a1a1a] via-[#222] to-[#1a1a1a]" />

{/* Shimmer effect with reduced motion support */}
{shimmer && !prefersReducedMotion && (
<div className="absolute inset-0 -translate-x-full animate-shimmer bg-gradient-to-r from-transparent via-[rgba(255,255,255,0.05)] to-transparent" />
)}

{/* Static loading indicator for reduced motion */}
{shimmer && prefersReducedMotion && (
<div className="absolute inset-0 bg-gradient-to-r from-[#1a1a1a] via-[#252525] to-[#1a1a1a]" />
)}
</div>
);
}

/**
* Skeleton for commitment cards in the commitments list
*/
export function CommitmentCardSkeleton() {
return (
<div className="bg-[#0a0a0a] border border-[#222] rounded-xl p-5">
<div className="flex justify-between items-start mb-4">
<div className="space-y-2">
<Skeleton width={120} height={24} />
<Skeleton width={80} height={20} />
</div>
<Skeleton width={60} height={24} rounded="full" />
</div>

<div className="space-y-3 mb-6">
<div className="flex justify-between">
<Skeleton width={80} height={16} />
<Skeleton width={100} height={16} />
</div>
<div className="flex justify-between">
<Skeleton width={80} height={16} />
<Skeleton width={100} height={16} />
</div>
<div className="flex justify-between">
<Skeleton width={80} height={16} />
<Skeleton width={100} height={16} />
</div>
</div>

<div className="space-y-2">
<Skeleton width="100%" height={8} />
<div className="flex justify-between text-sm">
<Skeleton width={40} height={14} />
<Skeleton width={40} height={14} />
</div>
</div>

<div className="flex gap-3 mt-6">
<Skeleton width="100%" height={36} />
<Skeleton width="100%" height={36} />
</div>
</div>
);
}

/**
* Skeleton for marketplace cards
*/
export function MarketplaceCardSkeleton() {
return (
<div className="bg-gradient-to-b from-[#0a0a0a] to-[#111] border border-[#222] rounded-xl p-5">
<div className="flex justify-between items-start mb-4">
<div className="space-y-2">
<Skeleton width={100} height={24} />
<Skeleton width={60} height={20} />
</div>
<Skeleton width={80} height={28} rounded="full" />
</div>

<div className="space-y-3 mb-6">
<div className="flex justify-between">
<Skeleton width={60} height={16} />
<Skeleton width={100} height={16} />
</div>
<div className="flex justify-between">
<Skeleton width={60} height={16} />
<Skeleton width={100} height={16} />
</div>
<div className="flex justify-between">
<Skeleton width={60} height={16} />
<Skeleton width={100} height={16} />
</div>
<div className="flex justify-between">
<Skeleton width={60} height={16} />
<Skeleton width={100} height={16} />
</div>
</div>

<div className="border-t border-[#222] pt-4">
<div className="flex justify-between items-center">
<Skeleton width={80} height={16} />
<Skeleton width={100} height={32} />
</div>
</div>
</div>
);
}

/**
* Skeleton for health metrics charts
*/
export function HealthChartSkeleton() {
return (
<div className="bg-[#111] border border-[#222] rounded-xl p-6">
<div className="flex justify-between items-center mb-6">
<Skeleton width={120} height={28} />
<div className="flex gap-2">
<Skeleton width={80} height={32} rounded="lg" />
<Skeleton width={80} height={32} rounded="lg" />
<Skeleton width={80} height={32} rounded="lg" />
</div>
</div>

<div className="space-y-4">
<div className="flex justify-between">
<Skeleton width={60} height={16} />
<Skeleton width={80} height={16} />
</div>

{/* Chart area */}
<div className="relative h-[300px]">
{/* Y-axis */}
<div className="absolute left-0 top-0 bottom-0 w-12 space-y-8">
{[...Array(5)].map((_, i) => (
<Skeleton key={i} width={40} height={1} />
))}
</div>

{/* X-axis */}
<div className="absolute left-12 right-0 bottom-0 h-6 flex justify-between">
{[...Array(6)].map((_, i) => (
<Skeleton key={i} width={40} height={1} />
))}
</div>

{/* Chart lines */}
<div className="absolute left-12 right-4 top-4 bottom-10">
<div className="relative h-full">
{/* Grid lines */}
{[...Array(4)].map((_, i) => (
<div
key={i}
className="absolute left-0 right-0 h-px bg-[#222]"
style={{ top: `${(i + 1) * 25}%` }}
/>
))}

{/* Simulated chart line */}
<div className="absolute inset-0">
<svg width="100%" height="100%" className="overflow-visible">
<path
d="M0,80 C40,60 80,40 120,60 C160,80 200,40 240,20 C280,0 320,40 360,60"
fill="none"
stroke="#333"
strokeWidth="2"
strokeDasharray="5,5"
/>
</svg>
</div>
</div>
</div>
</div>

<div className="flex justify-center gap-6 mt-4">
<Skeleton width={120} height={20} />
<Skeleton width={120} height={20} />
</div>
</div>
</div>
);
}

/**
* Skeleton for commitment stats
*/
export function CommitmentStatsSkeleton() {
return (
<div className="grid grid-cols-2 md:grid-cols-4 gap-4">
{[...Array(4)].map((_, i) => (
<div key={i} className="bg-[#0a0a0a] border border-[#222] rounded-xl p-4">
<Skeleton width={80} height={16} className="mb-2" />
<Skeleton width={120} height={28} />
<Skeleton width={60} height={14} className="mt-2" />
</div>
))}
</div>
);
}

/**
* Skeleton for filters section
*/
export function FiltersSkeleton() {
return (
<div className="flex flex-wrap gap-4 p-4 bg-[#0a0a0a] border border-[#222] rounded-xl">
{[...Array(5)].map((_, i) => (
<Skeleton key={i} width={100} height={36} rounded="lg" />
))}
</div>
);
}
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