import {
    type AeroflyFlight,
    type AeroflyNavRouteBase,
    AeroflyNavRouteDepartureRunway,
    AeroflyNavRouteDestination,
    AeroflyNavRouteDestinationRunway,
    AeroflyNavRouteOrigin,
    AeroflyNavRouteWaypoint,
} from "@fboes/aerofly-custom-missions";
import {
    getFlightplanDestinationCode,
    getFlightplanDestinationName,
    getFlightplanOriginCode,
    getFlightplanOriginName,
} from "../../formatter/AeroflyFlightFormatter.js";

export type ExportFileConverterWaypointType = "airport" | "runway" | "navaid" | "waypoint";

export abstract class AeroflyFlightToStringConverter {
    // static readonly fileExtension: string;

    abstract convert(flightplan: AeroflyFlight): string;

    getFlightplanTitle(flightplan: AeroflyFlight): string {
        return (
            flightplan._missionTitle ||
            `Flightplan ${getFlightplanOriginCode(flightplan)} → ${getFlightplanDestinationCode(flightplan)}`
        );
    }

    getMissionBriefing(flightplan: AeroflyFlight) {
        return (
            flightplan._missionBriefing ||
            `Flight from ${getFlightplanOriginName(flightplan)} to ${getFlightplanDestinationName(flightplan)}.`
        );
    }

    /**
     *
     * @param {AeroflyNavRouteBase} wp Waypoint to get altitude / elevation from
     * @returns {number | null} altitude / elevation in meters
     */
    protected getWaypointAltitude(wp: AeroflyNavRouteBase): number | null {
        if (wp instanceof AeroflyNavRouteWaypoint) {
            return wp.altitude;
        } else if (
            wp instanceof AeroflyNavRouteOrigin ||
            wp instanceof AeroflyNavRouteDepartureRunway ||
            wp instanceof AeroflyNavRouteDestinationRunway ||
            wp instanceof AeroflyNavRouteDestination
        ) {
            return wp.elevation;
        }
        return null;
    }

    protected getWaypointAltitudeFt(wp: AeroflyNavRouteBase): number | null {
        if (wp instanceof AeroflyNavRouteWaypoint) {
            return wp.altitude_ft;
        } else if (
            wp instanceof AeroflyNavRouteOrigin ||
            wp instanceof AeroflyNavRouteDepartureRunway ||
            wp instanceof AeroflyNavRouteDestinationRunway ||
            wp instanceof AeroflyNavRouteDestination
        ) {
            return wp.elevation_ft;
        }
        return null;
    }

    protected getWaypointSimplifiedType(wp: AeroflyNavRouteBase): ExportFileConverterWaypointType {
        switch (wp.constructor) {
            case AeroflyNavRouteOrigin:
            case AeroflyNavRouteDestination:
                return "airport";
            case AeroflyNavRouteDepartureRunway:
            case AeroflyNavRouteDestinationRunway:
                return "runway";
            default:
                return wp instanceof AeroflyNavRouteWaypoint && wp.navaidFrequency ? "navaid" : "waypoint";
        }
    }
}