/**
 * Describes ordered fallback steps for running effects or streams.
 *
 * An `ExecutionPlan` contains one or more steps. Each step provides a `Context`
 * or `Layer`, and may also define attempt limits, retry schedules, or
 * predicates that decide whether to keep trying. The runtime tries steps in
 * order until the workflow succeeds or the plan is exhausted. This module also
 * supports merging plans and reading metadata for the active step and attempt.
 *
 * @stability unstable
 * @since 3.16.0
 */
import type { NonEmptyReadonlyArray } from "./Array.ts";
import type * as Cause from "./Cause.ts";
import * as Context from "./Context.ts";
import type * as Duration from "./Duration.ts";
import type * as Effect from "./Effect.ts";
import * as Layer from "./Layer.ts";
import type { Pipeable } from "./Pipeable.ts";
import * as Schedule from "./Schedule.ts";
/**
 * String literal type used as the runtime type identifier for `ExecutionPlan`
 * values.
 *
 * @stability unstable
 * @category type IDs
 * @since 3.16.0
 */
export type TypeId = "~effect/ExecutionPlan";
/**
 * Runtime type identifier attached to `ExecutionPlan` values and used by
 * `isExecutionPlan`.
 *
 * @stability unstable
 * @category type IDs
 * @since 3.16.0
 */
export declare const TypeId: TypeId;
/**
 * Returns `true` if a value is an `ExecutionPlan` by checking for the
 * `ExecutionPlan.TypeId` marker.
 *
 * **When to use**
 *
 * Use when accepting an unknown value and you need to narrow it to an
 * `ExecutionPlan` before reading plan fields or passing it to plan-consuming
 * APIs.
 *
 * **Gotchas**
 *
 * This is a structural marker check; it does not validate the marker value or
 * the shape of the plan steps.
 *
 * @see {@link make} for constructing execution plans that satisfy this guard
 * @see {@link TypeId} for the runtime marker checked by this guard
 *
 * @stability unstable
 * @category guards
 * @since 3.16.0
 */
export declare const isExecutionPlan: (u: unknown) => u is ExecutionPlan<any>;
/**
 * A `ExecutionPlan` can be used with `Effect.withExecutionPlan` or `Stream.withExecutionPlan`, allowing you to provide different resources for each step of execution until the effect succeeds or the plan is exhausted.
 *
 * **Example** (Defining fallback execution steps)
 *
 * ```ts import.meta.vitest
 * import { Context, ExecutionPlan } from "effect"
 *
 * const ThePlan = ExecutionPlan.make(
 *   {
 *     provide: Context.empty(),
 *     attempts: 2
 *   },
 *   {
 *     provide: Context.empty()
 *   }
 * )
 *
 * ThePlan.steps.map((step) => step.attempts ?? 1) // => [2, 1]
 * ```
 *
 * @stability unstable
 * @category models
 * @since 3.16.0
 */
export interface ExecutionPlan<Config extends {
    provides: any;
    input: any;
    error: any;
    requirements: any;
}> extends Pipeable {
    readonly [TypeId]: TypeId;
    readonly steps: NonEmptyReadonlyArray<{
        readonly provide: Context.Context<Config["provides"]> | Layer.Layer<Config["provides"], Config["error"], Config["requirements"]>;
        readonly attempts?: number | undefined;
        readonly while?: ((input: Config["input"]) => Effect.Effect<boolean, Config["error"], Config["requirements"]>) | undefined;
        readonly schedule?: Schedule.Schedule<any, Config["input"], Config["error"], Config["requirements"]> | undefined;
    }>;
    /**
     * Returns an equivalent `ExecutionPlan` with the requirements satisfied, using the current context.
     */
    readonly captureRequirements: Effect.Effect<ExecutionPlan<{
        provides: Config["provides"];
        input: Config["input"];
        error: Config["error"];
        requirements: never;
    }>, never, Config["requirements"]>;
}
/**
 * Base type-level configuration carried by an `ExecutionPlan`.
 *
 * **Details**
 *
 * `provides` tracks services supplied by plan steps, `input` tracks the error
 * input consumed by schedules and `while` predicates, `error` tracks failures
 * from plan layers, predicates, or schedules, and `requirements` tracks
 * services needed to build or run the plan.
 *
 * @stability unstable
 * @category models
 * @since 4.0.0
 */
export type ConfigBase = {
    provides: any;
    input: any;
    error: any;
    requirements: any;
};
/**
 * Create an `ExecutionPlan`, which can be used with `Effect.withExecutionPlan` or `Stream.withExecutionPlan`, allowing you to provide different resources for each step of execution until the effect succeeds or the plan is exhausted.
 *
 * **Example** (Creating an execution plan)
 *
 * ```ts import.meta.vitest
 * import { Context, ExecutionPlan } from "effect"
 *
 * const ThePlan = ExecutionPlan.make(
 *   {
 *     provide: Context.empty(),
 *     attempts: 2
 *   },
 *   {
 *     provide: Context.empty()
 *   }
 * )
 *
 * ThePlan.steps.length // => 2
 * ```
 *
 * @stability unstable
 * @category constructors
 * @since 3.16.0
 */
export declare const make: <const Steps extends NonEmptyReadonlyArray<make.Step>>(...steps: Steps & { [K in keyof Steps]: make.Step; }) => ExecutionPlan<{
    provides: make.StepProvides<Steps>;
    input: make.StepInput<Steps>;
    error: make.StepError<Steps[number]>;
    requirements: make.StepRequirements<Steps[number]>;
}>;
/**
 * Namespace containing type helpers used by `ExecutionPlan.make`.
 *
 * @stability unstable
 * @since 3.16.0
 */
export declare namespace make {
    /**
     * Input shape for a single execution-plan step.
     *
     * **Details**
     *
     * Each step provides a `Context` or `Layer` and may limit attempts, add a
     * `while` predicate for retry decisions, or attach a `Schedule` for retry
     * timing.
     *
     * @category models
     * @since 3.16.0
     */
    type Step = {
        readonly provide: Context.Context<any> | Context.Context<never> | Layer.Any;
        readonly attempts?: number | undefined;
        readonly while?: ((input: any) => boolean | Effect.Effect<boolean, any, any>) | undefined;
        readonly schedule?: Schedule.Schedule<any, any, any, any> | undefined;
    };
    /**
     * Computes the errors from a step's layer, predicate, and schedule.
     *
     * @category utility types
     * @since 4.0.0
     */
    type StepError<Step> = (Step extends {
        readonly provide: Layer.Layer<infer _A, infer E, infer _R>;
    } ? E : never) | (Step extends {
        readonly while?: (input: any) => infer Result;
    } ? Effect.Error<Result> : never) | (Step extends {
        readonly schedule?: infer S;
    } ? Schedule.Error<S> : never);
    /**
     * Computes the services required by a step's layer, predicate, and schedule.
     *
     * @category utility types
     * @since 4.0.0
     */
    type StepRequirements<Step> = (Step extends {
        readonly provide: Layer.Layer<infer _A, infer _E, infer R>;
    } ? R : never) | (Step extends {
        readonly while?: (input: any) => infer Result;
    } ? Effect.Services<Result> : never) | (Step extends {
        readonly schedule?: infer S;
    } ? Schedule.Env<S> : never);
    /**
     * Computes the intersection of services provided by a list of execution-plan
     * steps.
     *
     * @category utility types
     * @since 3.16.1
     */
    type StepProvides<Steps extends ReadonlyArray<any>, Out = unknown> = Steps extends readonly [infer Step, ...infer Rest] ? StepProvides<Rest, Out & ((Step extends {
        readonly provide: Context.Context<infer P> | Layer.Layer<infer P, infer _E, infer _R>;
    } ? P : unknown))> : Out;
    /**
     * Computes the intersection of services provided by a list of execution plans.
     *
     * @category utility types
     * @since 3.16.1
     */
    type PlanProvides<Plans extends ReadonlyArray<any>, Out = unknown> = Plans extends readonly [infer Plan, ...infer Rest] ? PlanProvides<Rest, Out & (Plan extends ExecutionPlan<infer T> ? T["provides"] : unknown)> : Out;
    /**
     * Computes the input type consumed by the `while` predicates and schedules in
     * a list of execution-plan steps.
     *
     * @category utility types
     * @since 3.16.0
     */
    type StepInput<Steps extends ReadonlyArray<any>, Out = unknown> = Steps extends readonly [infer Step, ...infer Rest] ? StepInput<Rest, Out & ((Step extends {
        readonly while: (input: infer I) => infer _;
    } ? I : unknown) & (Step extends {
        readonly schedule: Schedule.Schedule<infer _O, infer I, infer _E, infer _R>;
    } ? I : unknown))> : Out;
    /**
     * Computes the combined input type consumed by a list of execution plans.
     *
     * @category utility types
     * @since 3.16.0
     */
    type PlanInput<Plans extends ReadonlyArray<any>, Out = unknown> = Plans extends readonly [infer Plan, ...infer Rest] ? PlanInput<Rest, Out & (Plan extends ExecutionPlan<infer T> ? T["input"] : unknown)> : Out;
}
/**
 * Combines multiple execution plans by concatenating their steps in order.
 *
 * **When to use**
 *
 * Use to combine separately defined fallback plans into one ordered plan before
 * applying it to an effect or stream.
 *
 * **Details**
 *
 * The resulting plan tries every step from the first plan, then every step from
 * the next plan, and so on.
 *
 * @see {@link make} for building a plan from individual steps instead of combining existing plans
 *
 * @stability unstable
 * @category combining
 * @since 3.16.0
 */
export declare const merge: <const Plans extends NonEmptyReadonlyArray<ExecutionPlan<any>>>(...plans: Plans) => ExecutionPlan<{
    provides: make.PlanProvides<Plans>;
    input: make.PlanInput<Plans>;
    error: Plans[number] extends ExecutionPlan<infer T> ? T["error"] : never;
    requirements: Plans[number] extends ExecutionPlan<infer T> ? T["requirements"] : never;
}>;
/**
 * Metadata describing the currently running execution-plan attempt.
 *
 * **Details**
 *
 * `attempt` is the current 1-based attempt number, and `stepIndex` is the
 * 0-based index of the plan step currently being evaluated.
 *
 * @stability unstable
 * @category metadata
 * @since 4.0.0
 */
export interface Metadata {
    readonly attempt: number;
    readonly stepIndex: number;
}
/**
 * Context reference containing metadata for the currently running
 * execution-plan attempt.
 *
 * **When to use**
 *
 * Use to read the active plan step and attempt while code is running under an
 * execution plan.
 *
 * @stability unstable
 * @category services
 * @since 4.0.0
 */
export declare const CurrentMetadata: Context.Reference<Metadata>;
/**
 * Lifecycle event emitted before an execution-plan attempt runs.
 *
 * **Details**
 *
 * `attempt` is the cumulative 1-based attempt number across all steps and
 * matches `CurrentMetadata.attempt` for the same attempt. `stepAttempt` is the
 * 1-based attempt number within the current step, and `stepIndex` is the
 * 0-based index of the step being attempted.
 *
 * @stability unstable
 * @category models
 * @since 4.0.0
 */
export interface AttemptStart {
    readonly _tag: "AttemptStart";
    readonly attempt: number;
    readonly stepAttempt: number;
    readonly stepIndex: number;
}
/**
 * Lifecycle event emitted when an execution-plan attempt succeeds.
 *
 * **Details**
 *
 * A successful attempt completes the plan, so this is always the final event.
 * `duration` is the elapsed time of the attempt.
 *
 * @stability unstable
 * @category models
 * @since 4.0.0
 */
export interface AttemptSuccess {
    readonly _tag: "AttemptSuccess";
    readonly attempt: number;
    readonly stepAttempt: number;
    readonly stepIndex: number;
    readonly duration: Duration.Duration;
}
/**
 * Lifecycle event emitted when an execution-plan attempt fails.
 *
 * **Details**
 *
 * `cause` holds the full failure cause, so defects and interruption are
 * reported as well as expected errors. Whether the plan retries or fails over
 * afterwards is decided by the step's `attempts`, `while`, and `schedule`; a
 * following `AttemptStart` indicates another attempt was made.
 *
 * @stability unstable
 * @category models
 * @since 4.0.0
 */
export interface AttemptFailure<E> {
    readonly _tag: "AttemptFailure";
    readonly attempt: number;
    readonly stepAttempt: number;
    readonly stepIndex: number;
    readonly duration: Duration.Duration;
    readonly cause: Cause.Cause<E>;
}
/**
 * Union of the lifecycle events emitted while an execution plan runs.
 *
 * **Details**
 *
 * Every `AttemptStart` is followed by exactly one terminal event, either
 * `AttemptSuccess` or `AttemptFailure`. An interrupted attempt emits
 * `AttemptFailure` with the interruption cause.
 *
 * @stability unstable
 * @category models
 * @since 4.0.0
 */
export type Event<E> = AttemptStart | AttemptSuccess | AttemptFailure<E>;
//# sourceMappingURL=ExecutionPlan.d.ts.map