PassiveRadarSimulator/build.js at main · pmilford/PassiveRadarSimulator · GitHub

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const fs = require('fs');
const esbuild = require('esbuild');
const path = require('path');

function base64Encode(file) {
    const bitmap = fs.readFileSync(file);
    return Buffer.from(bitmap).toString('base64');
}

async function build() {
    // 1. Bundle React App
    const result = await esbuild.build({
        entryPoints: ['src/index.js'],
        bundle: true,
        minify: true,
        loader: { '.js': 'jsx' },
        write: false,
    });

    const appCode = result.outputFiles[0].text;

    // 2. Leaflet CSS and Images
    let leafletCSS = fs.readFileSync('src/lib/leaflet.css', 'utf8');

    // Replace image URLs with base64
    const images = ['layers.png', 'layers-2x.png', 'marker-icon.png'];
    images.forEach(img => {
        if (fs.existsSync(`src/lib/images/${img}`)) {
            const b64 = base64Encode(`src/lib/images/${img}`);
            const ext = path.extname(img).substring(1);
            const dataURI = `data:image/${ext};base64,${b64}`;
            leafletCSS = leafletCSS.replace(new RegExp(`images/${img}`, 'g'), dataURI);
        }
    });

    // Tailwind
    const tailwindScript = fs.readFileSync('src/lib/tailwind.js', 'utf8');

    // HTML Template
    const html = `<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
    <title>Passive Radar Lab</title>
    <style>
        ${leafletCSS}
        body, html { margin: 0; padding: 0; height: 100%; overflow: hidden; background-color: #0f172a; }
        #root { height: 100%; width: 100%; }
        .leaflet-container { background: #000 !important; }
        .custom-div-icon { background: transparent; border: none; }
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: #1e293b; }
        ::-webkit-scrollbar-thumb { background: #475569; border-radius: 3px; }
    </style>
    <script>
        ${tailwindScript}
    </script>
</head>
<body>
    <div id="root"></div>
    <script>
        ${appCode}
    </script>
</body>
</html>`;

    fs.writeFileSync('PRSim_bundled.html', html);
    console.log('Build complete: PRSim_bundled.html');
}

build().catch(e => {
    console.error(e);
    process.exit(1);
});