import path from "path";
import fs from "fs";
import grabHostNames from "../../utils/grab-host-names";
import apiGetUser from "../../functions/api/users/api-get-user";
import {
    APIGetUserFunctionParams,
    GetUserFunctionReturn,
    GetUserParams,
} from "../../types";
import grabUserDSQLAPIPath from "../../utils/backend/users/grab-api-path";

/**
 * # Get User
 */
export default async function getUser({
    apiKey,
    userId,
    database,
    fields,
    useLocal,
    apiVersion = "v1",
    dbUserId,
    selectAll,
}: GetUserParams): Promise<GetUserFunctionReturn> {
    /**
     * Initialize
     */
    const defaultFields = [
        "id",
        "first_name",
        "last_name",
        "email",
        "username",
        "image",
        "image_thumbnail",
        "verification_status",
        "date_created",
        "date_created_code",
        "date_created_timestamp",
        "date_updated",
        "date_updated_code",
        "date_updated_timestamp",
    ];

    const updatedFields =
        fields && fields[0] ? [...defaultFields, ...fields] : defaultFields;

    const grabedHostNames = grabHostNames();
    const { host, port, scheme } = grabedHostNames;

    const getUserParams: APIGetUserFunctionParams = {
        userId,
        fields: [...new Set(updatedFields)],
        database,
        dbUserId,
        selectAll,
    };

    if (useLocal) {
        return await apiGetUser(getUserParams);
    }

    /**
     * Make https request
     *
     * @description make a request to datasquirel.com
     */
    const httpResponse = await new Promise((resolve, reject) => {
        const reqPayload = JSON.stringify(getUserParams);

        const finalAPIKey =
            apiKey ||
            process.env.DSQL_API_KEY ||
            process.env.DSQL_FULL_ACCESS_API_KEY ||
            process.env.DSQL_READ_ONLY_API_KEY;

        const httpsRequest = scheme.request(
            {
                method: "POST",
                headers: {
                    "Content-Type": "application/json",
                    "Content-Length": Buffer.from(reqPayload).length,
                    Authorization: finalAPIKey,
                },
                port,
                hostname: host,
                path: grabUserDSQLAPIPath({
                    paradigm: "auth",
                    action: "get",
                    database,
                    apiVersion,
                    userID: userId,
                }),
            },

            /**
             * Callback Function
             *
             * @description https request callback
             */
            (response) => {
                var str = "";

                response.on("data", function (chunk) {
                    str += chunk;
                });

                response.on("end", function () {
                    resolve(JSON.parse(str));
                });

                response.on("error", (err) => {
                    reject(err);
                });
            }
        );

        httpsRequest.write(reqPayload);
        httpsRequest.end();
    });

    return httpResponse as GetUserFunctionReturn;
}