/**
 * Pipeline Step Types
 *
 * Discriminated union of step types for sequential pipeline execution.
 * Each step type has a `type` discriminant and a required `name` field for observability.
 */
import type { PipelineContext } from './context';
export type { PipelineContext } from './context';
/**
 * Retry configuration for steps
 */
export interface RetryConfig {
    /** Maximum number of retry attempts */
    maxRetries: number;
    /** Initial backoff in milliseconds */
    backoffMs: number;
    /** Optional maximum backoff cap in milliseconds */
    maxBackoffMs?: number;
}
/**
 * Base step interface - common fields for all step types
 */
export interface BaseStep {
    /** Step name for observability and output keying (required) */
    name: string;
    /** Optional retry configuration */
    retry?: RetryConfig;
    /** Context visibility for this step (default: 'accumulated') */
    contextView?: 'accumulated' | 'isolated';
}
/**
 * Agent step - executes a registered agent
 */
export interface AgentStep extends BaseStep {
    /** Discriminant for agent steps */
    type: 'agent';
    /** ID of the registered agent to execute */
    agentId: string;
}
/**
 * Function step - executes a custom function
 */
export interface FunctionStep extends BaseStep {
    /** Discriminant for function steps */
    type: 'function';
    /** Function to execute with pipeline context */
    fn: (context: PipelineContext) => Promise<unknown> | unknown;
}
/**
 * Conditional step - branches based on condition evaluation
 */
export interface ConditionalStep extends BaseStep {
    /** Discriminant for conditional steps */
    type: 'conditional';
    /** Condition function to evaluate */
    condition: (context: PipelineContext) => boolean | Promise<boolean>;
    /** Steps to execute when condition is true */
    whenTrue: PipelineStep[];
    /** Optional steps to execute when condition is false */
    whenFalse?: PipelineStep[];
}
/**
 * Pipeline reference step - executes another registered pipeline
 */
export interface PipelineRefStep extends BaseStep {
    /** Discriminant for pipeline reference steps */
    type: 'pipeline';
    /** ID of the registered pipeline to execute */
    pipelineId: string;
}
/**
 * Discriminated union of all pipeline step types
 */
export type PipelineStep = AgentStep | FunctionStep | ConditionalStep | PipelineRefStep;
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