export type SimBriefApiPayloadAirport = {
    icao_code: string;
    icao_region: string;
    pos_lat: string;
    pos_long: string;
    /**
     * Feet
     */
    elevation: string;
    name: string;
    plan_rwy: string;
    metar: string;
    /**
     * Meters
     */
    metar_visibility: string;
    /**
     * Feet
     */
    metar_ceiling: string;
    metar_category: string;
};

export type SimBriefApiPayloadNavlogItem = {
    ident: string;
    type: "ltlg" | "wpt" | "vor" | "apt";
    icao_region: string;
    pos_lat: string;
    pos_long: string;
    altitude_feet: string;
    /**
     * Can be in kHz or MHz
     */
    frequency: string;
};

export type SimBriefApiPayloadFmsDownload = {
    name: string;
    link: string;
};

export type SimBriefApiPayload = {
    general: {
        /**
         * Feet
         */
        initial_altitude: string;
        icao_airline: string;
        cruise_tas: string;
        passengers: string;
    };
    origin: SimBriefApiPayloadAirport;
    destination: SimBriefApiPayloadAirport;
    navlog: SimBriefApiPayloadNavlogItem[];
    atc: {
        callsign: string;
    };
    aircraft: {
        icaocode: string;
        reg: string;
    };
    fuel: {
        plan_ramp: string; // kg
    };
    times: {
        sched_out: string;
    };
    weights: {
        payload: string; // kg
    };
    fms_downloads: {
        directory: string;
        mfs: SimBriefApiPayloadFmsDownload;
        mfn: SimBriefApiPayloadFmsDownload;
    };
};

export type SimBriefApiError = {
    fetch?: {
        userid: string;
        static_id: string;
        status: string;
        time: string;
    };
};

export class SimBriefApi {
    public async fetch(username: string, timeoutMs = 5000): Promise<SimBriefApiPayload> {
        const url = new URL("https://www.simbrief.com/api/xml.fetcher.php");
        url.searchParams.append(username.match(/^\d+$/) ? "userid" : "username", username);
        url.searchParams.append("json", "v2");

        const response = await fetch(url, {
            headers: {
                Accept: "application/json",
            },
            signal: AbortSignal.timeout(timeoutMs),
        });

        if (!response.ok) {
            const errorResponse = (await response.json()) as SimBriefApiError;
            throw new Error(errorResponse.fetch?.status ?? `Response status: ${response.status.toString()}`);
        }

        return (await response.json()) as SimBriefApiPayload;
    }
}