// @ts-check

import https from "https";
import http from "http";
import { APIConnectionOptions } from "../types";

export type GrabHostNamesReturn = {
    host: string;
    port: number | string;
    scheme: typeof http | typeof https;
    user_id: string | number;
    apiKey?: string;
};

type Param = {
    userId?: string | number;
    env?: { [k: string]: string };
    remoteHost?: string;
    remoteHostPort?: string;
    useDefault?: boolean;
    apiConnectionConfig?: APIConnectionOptions;
};

/**
 *  # Grab Names For Query
 */
export default function grabHostNames(param?: Param): GrabHostNamesReturn {
    const finalEnv = param?.env
        ? { ...process.env, ...param.env }
        : process.env;

    const scheme =
        param?.apiConnectionConfig?.scheme || finalEnv["DSQL_HTTP_SCHEME"];
    const localHost = param?.apiConnectionConfig?.isLocalhost
        ? "localhost"
        : finalEnv["DSQL_LOCAL_HOST"];
    const localHostPort =
        param?.apiConnectionConfig?.localhostPort ||
        finalEnv["DSQL_LOCAL_HOST_PORT"];

    const remoteHost = param?.useDefault
        ? undefined
        : param?.apiConnectionConfig?.remoteHost
        ? param?.apiConnectionConfig?.remoteHost
        : finalEnv["DSQL_API_REMOTE_HOST"]?.match(/.*\..*/)
        ? finalEnv["DSQL_API_REMOTE_HOST"]
        : undefined;
    const remoteHostPort = param?.useDefault
        ? undefined
        : param?.apiConnectionConfig?.remoteHostPort
        ? param?.apiConnectionConfig?.remoteHostPort
        : finalEnv["DSQL_API_REMOTE_HOST_PORT"]?.match(/./)
        ? finalEnv["DSQL_API_REMOTE_HOST_PORT"]
        : undefined;

    return {
        host: remoteHost || localHost || "www.datasquirel.com",
        port: remoteHostPort || localHostPort || 443,
        scheme: scheme?.match(/^http$/i) ? http : https,
        user_id: param?.userId || String(finalEnv["DSQL_API_USER_ID"] || 0),
        apiKey:
            param?.apiConnectionConfig?.apiKey ||
            process.env.DSQL_FULL_ACCESS_API_KEY ||
            process.env.DSQL_API_KEY ||
            process.env.DSQL_READ_ONLY_API_KEY,
    };
}