/// <reference types="node" />
export declare const enum SlingMessageType {
    RUN = "run",
    STOP = "stop",
    PING = "ping",
    STATUS = "status",
    DISPLAY = "display",
    INPUT = "input",
    HELLO = "hello",
    MONITOR = "monitor"
}
export declare const slingDeviceMessageTypes: SlingMessageType[];
export declare const slingClientMessageTypes: SlingMessageType[];
export declare const slingMessageTypes: SlingMessageType[];
export declare function isValidSlingMessageType(type: string): type is SlingMessageType;
export interface SlingEmptyMessage<T extends SlingMessageType> {
    type: T;
}
export declare type SlingDisplayPayloadType = keyof typeof displayPayloadTypeToId;
declare const displayPayloadTypeToId: {
    readonly undefined: 1;
    readonly null: 2;
    readonly boolean: 3;
    readonly i32: 4;
    readonly f32: 5;
    readonly str: 6;
    readonly array: 7;
    readonly function: 8;
};
export declare type SlingDisplayMessageType = keyof typeof displayMessageTypeToId;
declare const displayMessageTypeToId: {
    readonly output: 0;
    readonly error: 1;
    readonly result: 2;
    readonly response: 4;
    readonly flush: 100;
};
export interface SlingEmptyDisplayMessageGeneric<T extends SlingMessageType.DISPLAY | SlingMessageType.INPUT, MT extends SlingDisplayMessageType> extends SlingEmptyMessage<T> {
    displayType: MT;
    selfFlushing: boolean;
}
export interface SlingValuedDisplayMessageGeneric<T extends SlingMessageType.DISPLAY | SlingMessageType.INPUT, PT extends SlingDisplayPayloadType, P, MT extends SlingDisplayMessageType> extends SlingEmptyDisplayMessageGeneric<T, MT> {
    payloadType: PT;
    value: P;
}
export declare type SlingDisplayMessageGeneric<T extends SlingMessageType.DISPLAY | SlingMessageType.INPUT, MT extends SlingDisplayMessageType> = SlingValuedDisplayMessageGeneric<T, 'undefined' | 'function', undefined, MT> | SlingValuedDisplayMessageGeneric<T, 'null', null, MT> | SlingValuedDisplayMessageGeneric<T, 'boolean', boolean, MT> | SlingValuedDisplayMessageGeneric<T, 'i32' | 'f32', number, MT> | SlingValuedDisplayMessageGeneric<T, 'str' | 'array', string, MT>;
export interface SlingDisplayFlushMessage extends SlingEmptyDisplayMessageGeneric<SlingMessageType.DISPLAY, 'flush'> {
    startingId: number;
    endingId: number;
}
export declare type SlingNonFlushDisplayMessage = SlingDisplayMessageGeneric<SlingMessageType.DISPLAY, 'output' | 'error' | 'result'> | SlingDisplayMessageGeneric<SlingMessageType.INPUT, 'response'>;
export declare type SlingDisplayMessage = SlingNonFlushDisplayMessage | SlingDisplayFlushMessage;
export interface SlingMonitorNonFlushMessage extends SlingEmptyMessage<SlingMessageType.MONITOR> {
    isFlush: boolean;
    data: string;
}
export interface SlingMonitorFlushMessage extends SlingEmptyMessage<SlingMessageType.MONITOR> {
    isFlush: boolean;
    startingId: number;
    endingId: number;
}
export declare type SlingMonitorMessage = SlingMonitorFlushMessage | SlingMonitorNonFlushMessage;
export declare type SlingStatus = keyof typeof slingStatusToId;
declare const slingStatusToId: {
    readonly idle: 0;
    readonly running: 1;
    readonly prompt: 2;
};
export declare type SlingStatusMessage = SlingEmptyMessage<SlingMessageType.STATUS> & ({
    status: Exclude<SlingStatus, 'prompt'>;
} | {
    status: 'prompt';
    prompt: string;
});
export interface SlingRunMessage extends SlingEmptyMessage<SlingMessageType.RUN> {
    code: Buffer;
}
export declare type SlingStopMessage = SlingEmptyMessage<SlingMessageType.STOP>;
export declare type SlingPingMessage = SlingEmptyMessage<SlingMessageType.PING>;
export declare type SlingHelloMessage = SlingEmptyMessage<SlingMessageType.HELLO> & {
    nonce: number;
};
export declare type SlingNoIdMessage = SlingRunMessage | SlingDisplayMessage | SlingStatusMessage | SlingStopMessage | SlingPingMessage | SlingHelloMessage | SlingMonitorMessage;
export declare type SlingOptionalIdMessage = SlingNoIdMessage & {
    id?: number;
};
export declare type SlingMessage = SlingNoIdMessage & {
    id: number;
};
export declare function deserialiseMqttMessage(topic: string, data: Buffer): SlingMessage | null;
export declare function serialiseMqttMessage(message: SlingOptionalIdMessage): Buffer | null;
export {};