import { ActivityParams, ConversationReference, DeprecatedInputActivity, SentActivity } from '@microsoft/teams.api';
import { IActivityEvent, IErrorEvent } from '../../events';
import { IStreamer } from '../streamer';
import { IPluginActivityEvent } from './plugin-activity-event';
import { IPluginActivityResponseEvent } from './plugin-activity-response-event';
import { IPluginActivitySentEvent } from './plugin-activity-sent-event';
import { IPluginErrorEvent } from './plugin-error-event';
import { IPluginStartEvent } from './plugin-start-event';
/**
 * represents a plugins
 * unique name
 */
export type PluginName = 'http' | Omit<string, 'http'>;
/**
 * emitted when the plugin
 * encounters an error
 */
export type OnErrorPluginEvent = (event: IErrorEvent) => void;
/**
 * emitted when the plugin
 * receives an activity
 */
export type OnActivityPluginEvent = (event: IActivityEvent) => void;
export interface IPlugin<TActivityContext extends {} = {}, TEvents extends {} = {}> {
    /**
     * The event types that this plugin can emit. This is just a type, but we need it
     * for the type system to pick it up. You don't actually need to assign this to
     * anything.
     * Simply having `__eventType!: MyEvents` works.
     */
    __eventType?: TEvents;
    /**
     * lifecycle method called by the `App`
     * once during initialization
     */
    onInit?(): void | Promise<void>;
    /**
     * lifecycle method called by the `App`
     * once during startup
     */
    onStart?(event: IPluginStartEvent): void | Promise<void>;
    /**
     * lifecycle method called by the `App`
     * once during shutdown
     */
    onStop?(): void | Promise<void>;
    /**
     * called by the `App`
     * when an error occurs
     */
    onError?(event: IPluginErrorEvent): void | Promise<void>;
    /**
     * called by the `App`
     * when an activity is received
     */
    onActivity?(event: IPluginActivityEvent): void | TActivityContext | Promise<void | TActivityContext>;
    /**
     * called by the `App`
     * when an activity is sent
     */
    onActivitySent?(event: IPluginActivitySentEvent): void | Promise<void>;
    /**
     * called by the `App`
     * when an activity response is sent
     */
    onActivityResponse?(event: IPluginActivityResponseEvent): void | Promise<void>;
    /**
     * called by the `App`
     * to send an activity
     */
    send?: {
        /**
         * @deprecated Use MessageActivityInput or TypingActivityInput instead.
         */
        (activity: DeprecatedInputActivity, ref: ConversationReference): Promise<SentActivity>;
        (activity: ActivityParams, ref: ConversationReference): Promise<SentActivity>;
        (activity: ActivityParams | DeprecatedInputActivity, ref: ConversationReference): Promise<SentActivity>;
    };
    /**
     * called by the `App`
     * to create a new activity stream
     */
    createStream?(ref: ConversationReference): IStreamer;
}
export type EmitPluginEvent<TEvents extends {}> = <Name extends keyof TEvents>(name: Name, arg: TEvents[Name]) => void;
export type PluginWithEvents<TEvents extends {}> = Pick<Required<IPlugin<TEvents>>, '__eventType'>;