import { aws_events } from "aws-cdk-lib";
import { Construct } from "constructs";
import { IEventBus, IEventBusFilterable, DynamicProps, IntegrationWithEventBus } from "./event-bus";
import { PatternDocument } from "./event-pattern/pattern";
import { EventTransformFunction, EventTransform } from "./transform";
import type { Event } from "./types";
/**
 * A function interface used by the {@link EventBus}'s when function to generate a rule.
 *
 * event is every event sent to the bus to be filtered. This argument is optional.
 */
export declare type RulePredicateFunction<Evnt, OutEvnt extends Evnt = Evnt> = ((event: Evnt) => event is OutEvnt) | ((event: Evnt) => boolean);
/**
 * @typeParam - Evnt - The original event type from the {@link EventBus}.
 * @typeParam - OutEvnt - The narrowed event type after the predicate is applied.
 */
export interface IRule<out OutEvnt extends Event> {
    readonly resource: aws_events.Rule;
    /**
     * This static property identifies this class as a Rule to the TypeScript plugin.
     */
    readonly functionlessKind: typeof RuleBase.FunctionlessType;
    /**
     * Transform the event before sending to a target using pipe using TargetInput transforms.
     * https://docs.aws.amazon.com/eventbridge/latest/userguide/eb-transform-target-input.html
     *
     * Return the entire event (or directly call .pipe without map)
     *
     * ```ts
     * .map(event => event)
     * ```
     *
     * Return only the detail object
     *
     * ```ts
     * .map(event => event.detail)
     * ```
     *
     * Create a new object
     *
     * ```ts
     * .map(event => ({
     *    source: event.source,
     *    value: event.detail.value
     * }))
     * ```
     *
     * Format a string
     *
     * ```ts
     * .map(event => `this is the source ${event.source}`)
     * ```
     *
     * Format a string in an object
     *
     * ```ts
     * .map(event => ({ formattedSource: `this is the source ${event.source}` }))
     * ```
     *
     * Get the rule name
     *
     * ```ts
     * .map((event, $utils) => ({
     *    ruleName: $utils.context.ruleName,
     *    detail: event.detail
     *  }))
     * ```
     *
     *
     * Local variables
     *
     * ```ts
     * .map(event => {
     *    const formatted = `${event.id}_${event.detail.id}`;
     *    return ({
     *       formatted
     *    })
     * })
     * ```
     *
     * Unsupported by EventBridge:
     * * String slicing/sub string
     * * Arithmetic
     * * Boolean logic `event.source === "lambda"`)
     * * Formatting the whole event `event: ${event}`
     * * More...
     *
     * Unsupported by Functionless:
     * * Variables from outside of the function scope
     *
     * @typeParam - NewEvnt - The type transformed to in the transform function.
     * @typeParam - InEvnt - `InEvnt` is the covariant of `OutEvnt`. This type parameter should be left
     *                       empty to be inferred. ex: `.map<NewType>(() => {})` or `.map(() => <NewType>{})`.
     */
    map<NewEvnt, InEvnt extends OutEvnt = OutEvnt>(transform: EventTransformFunction<InEvnt, NewEvnt>): EventTransform<InEvnt, NewEvnt>;
    /**
     * Defines a target of the {@link EventTransform}'s rule using this TargetInput.
     *
     * The event is sent to the target verbatim unless .map is used first.
     *
     * Event buses do not support TargetInput transforms.
     * https://docs.aws.amazon.com/eventbridge/latest/userguide/eb-bus-to-bus.html
     *
     * Send to lambda
     *
     * ```ts
     * const myFunction = new Function<Payload, void>(this, 'awsTarget', ...);
     * bus.when(...).pipe(myFunction)
     * ```
     *
     * Send to event bus with DLQ and Retries
     *
     * ```ts
     * const myFunction = new Function<Payload, void>(this, 'awsTarget', ...);
     * const myQueue = new aws_sqs.Queue(this, 'queue');
     * bus.when(...).pipe(myFunction, { deadLetterQueue: myQueue, retryAttempts: 10 });
     * ```
     *
     * Send to event bus
     *
     * ```ts
     * const targetBus = aws_events.EventBus(this, 'awsBus');
     * bus.when(...).pipe(new EventBus(targetBus))
     * ```
     */
    pipe<Props extends object | undefined>(integration: IntegrationWithEventBus<OutEvnt, Props>, ...props: Parameters<DynamicProps<Props>>): void;
    pipe(callback: () => aws_events.IRuleTarget): void;
}
/**
 * @typeParam - Evnt - The original event type from the {@link EventBus}.
 * @typeParam - OutEvnt - The narrowed event type after the predicate is applied.
 */
declare abstract class RuleBase<out OutEvnt extends Event> implements IRule<OutEvnt> {
    readonly ruleGenerator: () => aws_events.Rule;
    /**
     * This static properties identifies this class as a Rule to the TypeScript plugin.
     */
    static readonly FunctionlessType = "Rule";
    readonly functionlessKind = "Rule";
    _resource: aws_events.Rule | undefined;
    get resource(): aws_events.Rule;
    constructor(ruleGenerator: () => aws_events.Rule);
    /**
     * @inheritdoc
     */
    map<NewEvnt, InEvnt extends OutEvnt = OutEvnt>(transform: EventTransformFunction<InEvnt, NewEvnt>): EventTransform<InEvnt, NewEvnt>;
    /**
     * @inheritdoc
     */
    pipe<Props extends object | undefined>(integration: IntegrationWithEventBus<OutEvnt, Props>, ...props: Parameters<DynamicProps<Props>>): void;
    pipe(callback: () => aws_events.IRuleTarget): void;
}
/**
 * Special base rule that supports some internal behaviors like joining (AND) compiled rules.
 *
 * @typeParam - Evnt - The original event type from the {@link EventBus}.
 * @typeParam - OutEvnt - The narrowed event type after the predicate is applied.
 */
export declare class PredicateRuleBase<in Evnt extends Event, out OutEvnt extends Evnt = Evnt> extends RuleBase<OutEvnt> implements IEventBusFilterable<Evnt> {
    private bus;
    readonly document: PatternDocument;
    constructor(scope: Construct, id: string, bus: IEventBus<Evnt>, 
    /**
     * Functionless Pattern Document representation of Event Bridge rules.
     */
    document: PatternDocument, 
    /**
     * Documents to join (AND) with the document.
     * Allows chaining of when statement.
     */
    ...aggregateDocuments: PatternDocument[]);
    /**
     * @inheritdoc
     *
     * @typeParam InEvnt - The type the {@link Rule} matches. Covariant of output {@link OutEvnt}.
     * @typeParam NewEvnt - The type the predicate narrows to, a sub-type of {@link InEvnt}.
     */
    when<InEvent extends OutEvnt, NewEvnt extends InEvent>(id: string, predicate: RulePredicateFunction<InEvent, NewEvnt>): PredicateRuleBase<InEvent, NewEvnt>;
    when<InEvent extends OutEvnt, NewEvnt extends InEvent>(scope: Construct, id: string, predicate: RulePredicateFunction<InEvent, NewEvnt>): PredicateRuleBase<InEvent, NewEvnt>;
}
/**
 * Represents a set of events filtered by the when predicate using event bus's EventPatterns.
 * https://docs.aws.amazon.com/eventbridge/latest/userguide/eb-event-patterns.html
 *
 * @see EventBus.when for more details on filtering events.
 *
 * @typeParam - Evnt - The original event type from the {@link EventBus}.
 * @typeParam - OutEvnt - The narrowed event type after the predicate is applied.
 */
export declare class Rule<in Evnt extends Event, out OutEvnt extends Evnt = Evnt> extends PredicateRuleBase<Evnt, OutEvnt> {
    constructor(scope: Construct, id: string, bus: IEventBus<Evnt>, predicate: RulePredicateFunction<Evnt, OutEvnt>);
    /**
     * Import an {@link aws_events.Rule} wrapped with Functionless abilities.
     */
    static fromRule<Evnt extends Event>(rule: aws_events.Rule): IRule<Evnt>;
}
/**
 * The event structure output for all scheduled events.
 * @see https://docs.aws.amazon.com/eventbridge/latest/userguide/eb-run-lambda-schedule.html#eb-schedule-create-rule
 */
export interface ScheduledEvent extends Event<{}, "Scheduled Event", "aws.events"> {
}
export declare class ImportedRule<out Evnt extends Event> extends RuleBase<Evnt> {
    constructor(rule: aws_events.Rule);
}
export declare const deploymentOnlyModule = true;
export {};
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