import { registerFont } from 'canvas';
import fs from 'fs';

const __dirname = new URL('.', import.meta.url).pathname;

const vars: Record<string, string> = {};

for (const [, name, value] of fs.readFileSync(`${__dirname}/../data/variables.scss`).toString('utf-8')
    .matchAll(/^\$([^:]+): '([^']+)'(?:, '[^']+')*;$/gm)) {
    vars[name] = value;
}

const fontSources: Record<string, string> = {
    'Baloo Bhaijaan 2': 'baloo-bhaijaan-2-v19-arabic_latin-{weight}.ttf',
    'Nanum Gothic': 'nanum-gothic-v17-latin_korean-{weight}.ttf',
    Nunito: 'nunito-v16-latin-ext_latin_cyrillic-ext_cyrillic-{weight}.ttf',
    Quicksand: 'quicksand-v21-latin-ext_latin-{weight}.ttf',
    'Zen Maru Gothic': 'zen-maru-gothic-v4-latin_japanese-{weight}.ttf',
};

const weightsValues: Record<string, string> = {
    bold: '700',
};

export const registerLocaleFont = (v: string, weights: string[] = ['regular']): string => {
    const family = vars[v];
    const source = fontSources[family];
    for (const weight of weights) {
        registerFont(`static/fonts/${source.replace('{weight}', weightsValues[weight] || weight)}`, { family, weight });
    }
    return family;
};