import { src, dest, series } from 'gulp';
import process from 'node:process';
import replace from 'gulp-replace';

import * as dartSass from 'sass';
import gulpSass from 'gulp-sass';
const sass = gulpSass(dartSass);

import { deleteAsync } from 'del';

import { readdirSync } from 'node:fs';
import { join } from 'node:path';

import { compilePack } from '@foundryvtt/foundryvtt-cli';

function cleanDist() {
	return deleteAsync(['dist/**']);
}


function buildStyles() {
	return src('src/style/**/*.scss')
		.pipe(sass().on('error', sass.logError))
		.pipe(dest('dist/style/'))
};

function copySource() {
	return src(['src/**/*', '!src/style/**/*.scss', '!src/packs/**/*'])
		.pipe(dest('dist/'));
}

function updateManifestFile() {
	return src('dist/system.json')
		.pipe(replace('{{VERSION}}', process.env.VERSION))
		.pipe(dest('dist/'))
}

function buildDB() {
	// Determine which source folders to process

	const PACK_SRC = "src/packs/_source"
	const PACK_DEST = "dist/packs/"
	
	return new Promise(async (resolve, reject) => {
		const folders = readdirSync(PACK_SRC, { withFileTypes: true }).filter(file =>
			file.isDirectory()
		);

		for (const folder of folders) {
			const src = join(PACK_SRC, folder.name);
			const dest = join(PACK_DEST, folder.name);
			console.info(`Compiling pack ${folder.name}`);
			await compilePack(src, dest, { recursive: true, log: true, nedb: false });
			
		}
		resolve()
	})
}


export default series(
	cleanDist,
	copySource,
	buildStyles,
	buildDB,
	updateManifestFile
)