All files / web/src/app opengraph-image.tsx

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import { ImageResponse } from 'next/og'
import { readFileSync } from 'fs'
import { join } from 'path'

// Route segment config
export const runtime = 'nodejs'
export const dynamic = 'force-dynamic'

// Image metadata
export const alt = 'Abaci.One - Interactive Soroban Learning Platform'
export const size = {
  width: 1200,
  height: 630,
}
export const contentType = 'image/png'

// Extract just the abacus SVG content from the pre-generated og-image.svg
// This SVG is generated by scripts/generateAbacusIcons.tsx using AbacusReact
function getAbacusSVGContent(): string {
  const svgPath = join(process.cwd(), 'public', 'og-image.svg')
  const svgContent = readFileSync(svgPath, 'utf-8')

  // Extract just the abacus <g> element (contains the AbacusReact output)
  const abacusMatch = svgContent.match(
    /<!-- Left side - Abacus from @soroban\/abacus-react -->\s*<g[^>]*>([\s\S]*?)<\/g>/
  )

  if (!abacusMatch) {
    throw new Error('Could not extract abacus content from og-image.svg')
  }

  return abacusMatch[0] // Return the full <g>...</g> block with AbacusReact output
}

// Image generation
// Note: Uses pre-generated SVG from og-image.svg which is rendered by AbacusReact
// This avoids importing react-dom/server in this file (Next.js restriction)
export default async function Image() {
  const abacusSVG = getAbacusSVGContent()

  return new ImageResponse(
    <div
      style={{
        background: 'linear-gradient(135deg, #fef3c7 0%, #fcd34d 100%)',
        width: '100%',
        height: '100%',
        display: 'flex',
        alignItems: 'center',
        justifyContent: 'space-between',
        padding: '80px',
      }}
    >
      {/* Left side - Abacus from pre-generated og-image.svg (AbacusReact output) */}
      <div
        style={{
          display: 'flex',
          width: '40%',
        }}
        dangerouslySetInnerHTML={{
          __html: abacusSVG,
        }}
      />

      {/* Right side - Text content */}
      <div
        style={{
          display: 'flex',
          flexDirection: 'column',
          width: '55%',
          gap: '30px',
        }}
      >
        <h1
          style={{
            fontSize: '80px',
            fontWeight: 'bold',
            color: '#7c2d12',
            margin: 0,
            lineHeight: 1,
          }}
        >
          Abaci.One
        </h1>

        <p
          style={{
            fontSize: '40px',
            fontWeight: 600,
            color: '#92400e',
            margin: 0,
            lineHeight: 1.2,
          }}
        >
          Learn Soroban Through Play
        </p>

        <div
          style={{
            display: 'flex',
            flexDirection: 'column',
            gap: '15px',
            fontSize: '32px',
            color: '#78350f',
          }}
        >
          <div style={{ display: 'flex', alignItems: 'center' }}>• Interactive Games</div>
          <div style={{ display: 'flex', alignItems: 'center' }}>• Tutorials</div>
          <div style={{ display: 'flex', alignItems: 'center' }}>• Practice Tools</div>
        </div>
      </div>
    </div>,
    {
      ...size,
    }
  )
}