import { UserType } from "../types";
import grabDbFullName from "./grab-db-full-name";
import numberfy from "./numberfy";

type Param = {
    /**
     * Database full name or slug
     */
    dbName?: string;
    userId?: string | number;
    user?: UserType | null;
};

/**
 * # Grab full database name
 * @description Grab full database name from slug or full name
 * @param param0
 * @returns
 */
export default function grabDbNames(params?: Param) {
    const dbNamePrefix = process.env.DSQL_USER_DB_PREFIX || "datasquirel_user_";
    const finalUserId =
        params?.user?.id ||
        params?.userId ||
        numberfy(process.env.DSQL_USER_ID) ||
        numberfy(process.env.DSQL_DB_NAME?.split("_")?.[2]) ||
        undefined;

    const userDbPrefix = finalUserId
        ? `${dbNamePrefix}${finalUserId}_`
        : undefined;

    const finalDbName =
        params?.dbName || process.env.DSQL_DB_NAME || process.env.DSQL_DB_SLUG;

    const dbSlug = finalDbName
        ? userDbPrefix
            ? finalDbName.replace(userDbPrefix, "")
            : finalDbName.replace(new RegExp(`^${dbNamePrefix}\\d+_`), "")
        : undefined;

    if (!dbSlug) throw new Error(`No Db Name Provided!`);

    const dbFullName = grabDbFullName({
        dbName: dbSlug,
        userId: finalUserId,
    });

    if (!dbFullName) throw new Error(`Couldn't grab DB full name!`);

    return {
        userDbPrefix,
        dbFullName,
        dbNamePrefix,
        dbSlug,
    };
}