import { DEFAULT_IN_PATH, DEFAULT_OUT_PATH, getBundle, writeBundle } from './bundler.js';
import { getSourceMapFileName, SourceMapExtension, SourceMaps } from '../server/web/sourcemaps.js';
import deepEqual from 'fast-deep-equal';

async function main(inPath: string = DEFAULT_IN_PATH, outPath: string = DEFAULT_OUT_PATH) {
	const bundle = await getBundle(inPath)
	const errors: string[] = []
	for (const [name, {hash, sourceMap}] of bundle.css) {
		const filename = getSourceMapFileName(name, hash, SourceMapExtension.CSS)
		const existingMap = SourceMaps.get(filename)
		if (!existingMap) {
			errors.push(`source map for ${filename} is missing; add this line to server/web/sourcemaps.ts:\n\t\t${JSON.stringify([filename, sourceMap])},\n\n`)
		} else if (!deepEqual(sourceMap, existingMap)) {
			errors.push(`source map for ${filename} is incorrect; replace this line in server/web/sourcemaps.ts:\n\t\t${JSON.stringify([filename, existingMap])},\n\nwith this line:\n\t\t${JSON.stringify([filename, sourceMap])},\n\n`)
		}
	}
	if (errors.length > 0) {
		throw Error(errors.join('\n'))
	}
	await writeBundle(bundle, outPath)
}

main(...process.argv.slice(2)).then(() => {
	console.info('generated client helpers and confirmed sourcemaps are present');
}).catch((err) => {
	console.error('could not generate client helpers or confirm sourcemaps are present');
	console.error(err && 'stack' in err ? err.stack : err);
	throw err;
}).catch(() => {
	process.exit(1);
});