import {appendFileSync, existsSync, writeFileSync} from "fs";
import {extname, join} from "path";
import {getConfig} from "../config";

function styleImport(type: string, name: string, ext: string): string {
    return `@import './${type}/${name}/styles/${name + ext}';\n`;
}

function scriptImport(name: string, ext: string): string {
    return `module.exports.${name.replace(' ', '-')} = require('./${name}/scripts/${name + ext}');\n`;
}

function appendImport(file: string, text: string): void {
    if (existsSync(file)) {
        appendFileSync(file, text);
    } else {
        writeFileSync(file, text);
    }
}

export function importHandler(fileName: string, type: string, name: string): void {
    const ext: string = extname(fileName);
    const {src} = getConfig();
    const file: string = join(src, type + ext);

    if (ext === '.scss' || ext === '.less') {
        appendImport(file, styleImport(`${type}s`, name, ext));
    } else if (fileName === `${name}.js`) {
        appendImport(file, scriptImport(name, ext));
    }
}