import { build } from "esbuild";
import fs from 'fs-extra';

const nativeNodeModulesPlugin = {
  name: 'native-node-modules',
  setup(build) {
    // If a ".node" file is imported within a module in the "file" namespace, resolve 
    // it to an absolute path and put it into the "node-file" virtual namespace.
    build.onResolve({ filter: /\.node$/g, namespace: 'file' }, args => {
    	console.log(args)
    	return ({
      path: require.resolve(args.path, { paths: [args.resolveDir] }),
      namespace: 'node-file',
    })})

    // Files in the "node-file" virtual namespace call "require()" on the
    // path from esbuild of the ".node" file in the output directory.
    build.onLoad({ filter: /.*/, namespace: 'node-file' }, args => ({
      contents: `
        import path from ${JSON.stringify(args.path)}
        try { module.exports = require(path) }
        catch {}
      `,
    }))

    // If a ".node" file is imported within a module in the "node-file" namespace, put
    // it in the "file" namespace where esbuild's default loading behavior will handle
    // it. It is already an absolute path since we resolved it to one above.
    build.onResolve({ filter: /\.node$/, namespace: 'node-file' }, args => ({
      path: args.path,
      namespace: 'file',
    }))

    // Tell esbuild's default loading behavior to use the "file" loader for
    // these ".node" files.
    let opts = build.initialOptions
    opts.loader = opts.loader || {}
    opts.loader['.node'] = 'file'
  },
}
/* Plugin to move build folder from packages to outdir  */
async function copyBuildFolderPlugin() {
  const pathModule = await import('path');

  return {
    name: 'copy-build-folder',
    setup(build) {
      build.onResolve({ filter: /./ }, (args) => {
        const buildFolderPath = pathModule.join(`${process.cwd()}/node_modules/${args.path}`, 'build');
        if (fs.existsSync(buildFolderPath) && fs.statSync(buildFolderPath).isDirectory()) {

          fs.copySync(buildFolderPath, `${process.cwd()}/dir/build`);
        }

        return null;
      });
    },
  };
}

await build({
	entryPoints: ['./source/index.js'],
	minify: false,
	bundle: true,
	platform: 'node',
	plugins: [nativeNodeModulesPlugin, await copyBuildFolderPlugin()],
	outdir: 'dir'
});

120 |             throw e;
121 |           }
122 |         }
123 |       }
124 |       err = new Error(
                  ^
error: Could not locate the bindings file. Tried:
 → /home/mrbye/Documents/GitHub/package-builder/build/faiss-node.node
 → /home/mrbye/Documents/GitHub/package-builder/build/Debug/faiss-node.node
 → /home/mrbye/Documents/GitHub/package-builder/build/Release/faiss-node.node
 → /home/mrbye/Documents/GitHub/package-builder/out/Debug/faiss-node.node
 → /home/mrbye/Documents/GitHub/package-builder/Debug/faiss-node.node
 → /home/mrbye/Documents/GitHub/package-builder/out/Release/faiss-node.node
 → /home/mrbye/Documents/GitHub/package-builder/Release/faiss-node.node
 → /home/mrbye/Documents/GitHub/package-builder/build/default/faiss-node.node
 → /home/mrbye/Documents/GitHub/package-builder/compiled/20.8.0/linux/x64/faiss-node.node
 → /home/mrbye/Documents/GitHub/package-builder/addon-build/release/install-root/faiss-node.node
 → /home/mrbye/Documents/GitHub/package-builder/addon-build/debug/install-root/faiss-node.node
 → /home/mrbye/Documents/GitHub/package-builder/addon-build/default/install-root/faiss-node.node
 → /home/mrbye/Documents/GitHub/package-builder/lib/binding/node-v115-linux-x64/faiss-node.node
      at bindings (/home/mrbye/Documents/GitHub/package-builder/dir/index.js:124:13)
      at node_modules/faiss-node/lib/index.js (/home/mrbye/Documents/GitHub/package-builder/dir/index.js:184:17)
      at __require (/home/mrbye/Documents/GitHub/package-builder/dir/index.js:4:21)
      at /home/mrbye/Documents/GitHub/package-builder/dir/index.js:203:55