import type { WaypointType } from './navigation.types.js';
import { Aerodrome } from './waypoint.types.js';
import type { ICAO } from './constants.js';
/**
 * Abstract base class for service implementations that handle entity retrieval.
 *
 * @template T - The type of entity this service manages
 *
 * @remarks
 * This class provides a standard interface for services that need to find entities
 * by ICAO codes or geographic location. All concrete implementations must provide
 * their own implementations of the abstract methods.
 *
 * Users of this library must implement this class to provide data fetching logic
 * for their specific data sources (database, API, cache, etc.).
 *
 * @example
 * ```typescript
 * class MyAerodromeService extends ServiceBase<Aerodrome> {
 *   async findByICAO(icao: readonly ICAO[]): Promise<Aerodrome[]> {
 *     return await database.getAerodromesByICAO(icao);
 *   }
 *
 *   async findByLocation(location: GeoJSON.Position, radius: number): Promise<Aerodrome[]> {
 *     return await database.getAerodromesNearLocation(location, radius);
 *   }
 * }
 * ```
 */
export declare abstract class ServiceBase<T> {
    /**
     * Finds entities by their ICAO codes.
     *
     * @param icao - An array of ICAO codes to search for
     * @returns A promise that resolves to an array of entities matching the provided ICAO codes
     *
     * @example
     * ```typescript
     * const results = await service.findByICAO(['KJFK', 'KLAX']);
     * ```
     */
    abstract findByICAO(icao: readonly ICAO[]): Promise<T[]>;
    /**
     * Finds entities within a specified radius of a geographic location.
     *
     * @param location - A GeoJSON position [longitude, latitude, altitude?] representing the center point
     * @param radius - The search radius in kilometers
     * @returns A promise that resolves to an array of entities within the specified radius
     *
     * @example
     * ```typescript
     * const results = await service.findByLocation([-74.0060, 40.7128], 50);
     * ```
     */
    abstract findByLocation(location: GeoJSON.Position, radius: number): Promise<T[]>;
}
/**
 * Interface for waypoint resolvers that attempt to resolve a route string part into a waypoint.
 * Resolvers are called in sequence until one successfully resolves the waypoint.
 *
 * @interface WaypointResolver
 */
export interface WaypointResolver {
    /**
     * Attempts to resolve a route string part into a waypoint.
     *
     * @param part - The route string part to resolve (e.g., "KJFK", "WP(40.7128,-74.0060)", "VOR123")
     * @returns A promise that resolves to a WaypointType if successful, null/undefined if the resolver cannot handle this part
     * @throws {Error} May throw an error if the part matches the resolver's pattern but is invalid (e.g., invalid ICAO, malformed coordinates)
     */
    resolve(part: string): Promise<WaypointType | null | undefined>;
}
/**
 * PlannerService class provides methods to parse and resolve flight route strings into waypoints.
 * Uses a configurable chain of resolvers to support various waypoint formats.
 *
 * @class PlannerService
 *
 * @remarks
 * **Typical Usage**: Use the `createDefaultPlannerService()` factory function to get a pre-configured
 * instance with ICAO and coordinate resolvers.
 *
 * **Advanced Usage**: Use the constructor directly when you need full control over the resolver chain,
 * such as when you want to exclude default resolvers or change their order.
 *
 * @example
 * ```typescript
 * // Recommended: Use factory function for standard use cases
 * const planner = createDefaultPlannerService(aerodromeService);
 *
 * // Advanced: Direct construction for custom resolver chains
 * const planner = new PlannerService([
 *   new MyCustomResolver(),
 *   new ICAOResolver(aerodromeService),
 * ]);
 * ```
 */
export declare class PlannerService {
    private resolvers;
    /**
     * Creates a new instance of the PlannerService class.
     *
     * @param resolvers - Array of waypoint resolvers that will be tried in sequence to resolve route parts
     *
     * @remarks
     * Resolvers are tried in the order they appear in the array. The first resolver to return a
     * non-null/non-undefined value wins. Consider using `createDefaultPlannerService()` instead
     * for typical use cases.
     */
    constructor(resolvers?: WaypointResolver[]);
    /**
     * Adds a custom waypoint resolver to the resolver chain.
     * The resolver will be added at the end of the chain and will be tried after existing resolvers.
     *
     * @param resolver - The waypoint resolver to add
     * @returns void
     */
    addResolver(resolver: WaypointResolver): void;
    /**
     * Clears all waypoint resolvers from the resolver chain.
     *
     * @remarks
     * WARNING: This removes ALL resolvers including the default ICAO and Coordinate resolvers.
     * After calling this method, route parsing will fail unless new resolvers are added.
     *
     * @returns void
     */
    clearResolvers(): void;
    /**
     * Parses a route string into an array of waypoints.
     *
     * This method accepts a route string containing various waypoint formats and converts them
     * into standardized waypoint objects using a chain of resolvers.
     *
     * @param routeString - The route string to parse, containing waypoints separated by spaces, semicolons, or newlines
     * @returns A promise that resolves to an array of successfully parsed waypoints
     *
     * @remarks
     * Supported waypoint formats depend on the configured resolvers. The default factory function
     * (`createDefaultPlannerService`) provides support for:
     * - ICAO codes: 4-letter airport identifiers (e.g., "KJFK", "EGLL")
     * - Coordinate waypoints: WP(latitude,longitude) format (e.g., "WP(40.7128,-74.0060)")
     *
     * Custom resolvers can be added to support additional formats such as:
     * - IATA codes (e.g., "JFK", "LHR")
     * - VOR/NDB navaids (e.g., "VOR123", "NDB456")
     * - IFR waypoints (e.g., "BOSOX", "CRISY")
     * - VFR reporting points (e.g., "VRP_XX")
     *
     * Processing steps:
     * 1. Returns empty array if routeString is empty or falsy
     * 2. Converts input to uppercase for consistency
     * 3. Splits the route string by whitespace, semicolons, and newlines
     * 4. Filters out empty parts
     * 5. For each part, attempts to resolve using the chain of resolvers in order
     * 6. Silently skips parts that cannot be resolved by any resolver
     *
     * **Error Handling**:
     * - Parts that don't match any resolver pattern are **silently skipped**
     * - Parts that match a resolver's pattern but fail to resolve (e.g., valid ICAO code but
     *   aerodrome not found in database) **will throw an error**
     * - This means the returned array may have fewer waypoints than parts in the input string
     *
     * For example:
     * - "KJFK UNKNOWN EGLL" where UNKNOWN is not a valid ICAO → returns 2 waypoints (KJFK, EGLL)
     * - "KJFK XXXX EGLL" where XXXX is a valid ICAO pattern but not found → throws error
     *
     * @throws {Error} When a resolver matches a pattern but fails to find the entity
     *
     * @example
     * ```typescript
     * const waypoints = await planner.parseRouteString("KJFK EGLL WP(51.5,-0.1)");
     * // Returns array with resolved waypoints, skipping any unresolvable parts
     * ```
     */
    parseRouteString(routeString: string): Promise<WaypointType[]>;
    /**
     * Attempts to resolve multiple route parts into waypoints using the chain of resolvers.
     *
     * @param parts - An array of route string parts to resolve
     * @returns A promise that resolves to an array of successfully resolved waypoints
     *
     * @remarks
     * For each part, resolvers are tried in order until one successfully resolves it.
     * Parts that cannot be resolved by any resolver are silently skipped.
     * If a resolver throws an error for a matched pattern, that error will propagate and stop processing.
     */
    resolveRouteParts(parts: string[]): Promise<WaypointType[]>;
    /**
     * Attempts to resolve a single route part into a waypoint using the chain of resolvers.
     *
     * @param part - The route string part to resolve
     * @returns A promise that resolves to a WaypointType if any resolver successfully handles it, or null/undefined if no resolver can handle it
     *
     * @remarks
     * Resolvers are tried in the order they exist in the resolvers array.
     * Returns the result from the first resolver that returns a non-null/non-undefined value.
     * If a resolver throws an error, that error will propagate.
     */
    resolveRoutePart(part: string): Promise<WaypointType | null | undefined>;
}
/**
 * Creates a PlannerService instance with default waypoint resolvers.
 *
 * This factory function initializes a PlannerService with a standard resolver chain that includes:
 * 1. ICAOResolver - for resolving 4-letter ICAO airport codes (tried first)
 * 2. CoordinateResolver - for resolving WP(lat,lng) coordinate waypoints
 * 3. Any custom resolvers provided (tried last)
 *
 * @param aerodromeService - The aerodrome service for looking up airports and aerodromes
 * @param customResolvers - Optional array of custom waypoint resolvers that will be tried after the default resolvers
 * @returns A configured PlannerService instance with the resolver chain
 *
 * @remarks
 * Custom resolvers are placed at the end of the resolver chain, allowing you to extend
 * the default behavior with additional formats. For example, you could add resolvers for
 * IATA codes, VOR/NDB navaids, or IFR waypoints that would handle formats not recognized
 * by the default resolvers.
 *
 * @example
 * ```typescript
 * const planner = createDefaultPlannerService(aerodromeService);
 * // Creates a planner with ICAO and coordinate resolvers
 * ```
 *
 * @example
 * ```typescript
 * const planner = createDefaultPlannerService(
 *   aerodromeService,
 *   [new IATAResolver(), new VORResolver()]
 * );
 * // Creates a planner that tries ICAO first, then coordinates, then custom resolvers
 * ```
 */
export declare function createDefaultPlannerService(aerodromeService: ServiceBase<Aerodrome>, options?: {
    navaidService?: ServiceBase<Aerodrome>;
    customResolvers?: WaypointResolver[];
}): PlannerService;