/**
 * Patch @6over3/zeroperl-ts@1.0.10 after install.
 *
 * Problem: WASM loader treats only `window` + `document` as browser. Module workers have
 * neither, so it dynamic-imports `node:fs/promises` and fails under Vite.
 * Custom `fetch` from @uswriting/exiftool is ignored on that branch.
 *
 * Fix: use the fetch path when a custom fetch is provided (`Ee() || e`).
 *
 * Upstream: https://github.com/6over3/zeroperl-ts
 *
 * Re-verify when bumping @6over3/zeroperl-ts: search dist for the ORIGINAL snippets below.
 */
import fs from 'node:fs';
import path from 'node:path';
import { fileURLToPath } from 'node:url';

const patches = [
    {
        relativePath: 'esm/index.js',
        original: 'if(Ee())a=await(await(e??fetch)(q)).arrayBuffer();',
        patched: 'if(Ee()||e)a=await(await(e??fetch)(q)).arrayBuffer();'
    },
    {
        relativePath: 'cjs/index.cjs',
        original: 'if(pe())a=await(await(e??fetch)(w)).arrayBuffer();',
        patched: 'if(pe()||e)a=await(await(e??fetch)(w)).arrayBuffer();'
    }
];

const packageRoot = path.resolve(
    path.dirname(fileURLToPath(import.meta.url)),
    '../node_modules/@6over3/zeroperl-ts/dist'
);

const patchFile = ({ relativePath, original, patched }) => {
    const filePath = path.join(packageRoot, relativePath);

    if (!fs.existsSync(filePath)) {
        throw new Error(`patch-zeroperl-worker-fetch: missing ${filePath} (is @6over3/zeroperl-ts installed?)`);
    }

    const content = fs.readFileSync(filePath, 'utf8');

    if (content.includes(patched)) {
        return;
    }

    if (!content.includes(original)) {
        throw new Error(
            `patch-zeroperl-worker-fetch: ${relativePath} does not match @6over3/zeroperl-ts@1.0.10; update or remove this script`
        );
    }

    fs.writeFileSync(filePath, content.replaceAll(original, patched));
};

for (const entry of patches) {
    patchFile(entry);
}