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

import * as dartSass from 'sass';
import gulpSass from 'gulp-sass';
import {deleteAsync} from 'del';

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

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

const sass = gulpSass(dartSass);

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/assets/**/*', '!src/style/**/*.scss', '!src/packs/**/*'])
        .pipe(dest('dist/'));
}

function copyAssets() {
    return src(['src/assets/**/*'], {encoding: false})
        .pipe(dest('dist/assets/'))
}

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,
    copyAssets,
    buildStyles,
    buildDB,
    updateManifestFile
)