import fs from "fs";
import { SiteConfig } from "../../../types";
import grabDirNames from "../names/grab-dir-names";
import EJSON from "../../ejson";
import envsub from "../../envsub";

type Params = {
    userId?: string | number;
};

type Return = {
    appConfig: SiteConfig;
    userConfig: SiteConfig | null;
};

export default function grabConfig(params?: Params): Return {
    const { appConfigJSONFile, userConfigJSONFilePath } = grabDirNames({
        userId: params?.userId,
    });

    const appConfigJSON = envsub(fs.readFileSync(appConfigJSONFile, "utf-8"));
    const appConfig = EJSON.parse(appConfigJSON) as SiteConfig;

    if (!userConfigJSONFilePath) {
        return { appConfig, userConfig: null };
    }

    if (!fs.existsSync(userConfigJSONFilePath)) {
        fs.writeFileSync(
            userConfigJSONFilePath,
            JSON.stringify({
                main: {},
            }),
            "utf-8"
        );
    }

    const userConfigJSON = envsub(
        fs.readFileSync(userConfigJSONFilePath, "utf-8")
    );

    const userConfig = (EJSON.parse(userConfigJSON) || {
        main: {},
    }) as SiteConfig;

    return { appConfig, userConfig };
}