import { glob } from 'glob';
import { BuildState } from './state';
import { promises as fs } from 'fs';
import { map_input_file_to_output_file } from './helpers';

export async function copy_raw_files(state: BuildState) {
	const promises: Promise<any>[] = [ ];
	const files = await glob(state.conf.input.raw, {
		absolute: true,
		cwd: state.conf.input.root,
	});

	for (const in_file of files) {
		if (state.seen_files.has(in_file)) {
			continue;
		}

		state.seen_files.add(in_file);

		const out_file = map_input_file_to_output_file(state, in_file);

		// todo: check hashes to see if we can skip

		promises.push(
			fs.copyFile(in_file, await out_file)
		);
	}

	await Promise.all(promises);
	// todo: update metadata
}