import type { ModelMessage } from "ai";
import type { SessionAuth } from "#context/keys.js";
import type { Approval } from "#public/definitions/approval.js";
import type { SessionContext } from "#public/definitions/callback-context.js";
import type { ExactDefinition } from "#public/definitions/exact.js";
import type { DynamicResolveContext } from "#dynamic/definition.js";
import { MEMORY_DEFINITION_BRAND } from "#shared/memory-definition.js";
import type { ToolContext, ToolModelOutput } from "#tools/definition.js";
export interface MemoryNamespaceContext {
    readonly appRoot: string;
    readonly node: string;
    readonly slot: string;
}
export type MemoryNamespaceDefinition = string | null | ((context: MemoryNamespaceContext) => string | null | Promise<string | null>);
export type MemoryScopeResolverResult = string | readonly string[] | null;
export interface MemoryScopeContext {
    readonly abortSignal: AbortSignal;
    readonly session: {
        readonly id: string;
        readonly auth: SessionAuth;
    };
    readonly channel: {
        readonly kind?: string;
        readonly continuationToken?: string;
        readonly metadata?: Readonly<Record<string, unknown>>;
    };
}
export type MemoryScopeDefinition = string | null | ((context: MemoryScopeContext) => MemoryScopeResolverResult | Promise<MemoryScopeResolverResult>);
export interface MemoryScope {
    readonly key: string;
    readonly namespace: string;
    readonly value: string | readonly string[];
}
export interface MemoryRecallMessage {
    readonly content: string;
    readonly id?: string;
}
export type MemoryRecallResult = {
    readonly messages: readonly MemoryRecallMessage[];
} | null | undefined;
export interface MemoryTurnContext {
    readonly id: string;
    readonly input: readonly ModelMessage[];
    readonly sequence: number;
}
export interface MemoryOperationContext extends SessionContext {
    readonly abortSignal: AbortSignal;
    readonly messages: readonly ModelMessage[];
    readonly operationId: string;
    readonly memory: {
        readonly scope: MemoryScope;
        readonly slot: string;
    };
}
export interface MemoryTurnStartedContext extends MemoryOperationContext {
    readonly turn: MemoryTurnContext;
}
export interface MemoryCompactionCompletedContext extends MemoryOperationContext {
    readonly turn: MemoryTurnContext | null;
    readonly compaction: {
        readonly modelId: string;
    };
}
export interface MemoryCompactionRequestedContext extends MemoryOperationContext {
    readonly turn: MemoryTurnContext | null;
    readonly compaction: {
        readonly modelId: string;
        readonly usageInputTokens: number | null;
    };
}
export interface MemoryTurnCompletedContext extends MemoryOperationContext {
    readonly turn: MemoryTurnContext;
}
export type MemoryRecallHandler<TContext extends MemoryOperationContext> = (context: TContext) => MemoryRecallResult | Promise<MemoryRecallResult>;
export type MemoryCaptureHandler<TContext extends MemoryOperationContext> = (context: TContext) => void | Promise<void>;
export interface MemoryToolsContext extends DynamicResolveContext {
    readonly memory: {
        readonly scope: MemoryScope;
        readonly slot: string;
    };
    readonly turn: MemoryTurnContext;
}
export interface MemoryToolDefinition {
    readonly approval?: Approval<never>;
    readonly description: string;
    readonly execution?: never;
    execute(input: never, context: ToolContext): unknown | Promise<unknown> | AsyncIterable<unknown>;
    readonly inputSchema: unknown;
    readonly outputSchema?: unknown;
    readonly toModelOutput?: (output: never) => ToolModelOutput | Promise<ToolModelOutput>;
}
export type MemoryToolSet = Readonly<Record<string, MemoryToolDefinition>>;
export interface MemoryProvider {
    readonly recall: {
        readonly "turn.started": MemoryRecallHandler<MemoryTurnStartedContext>;
        readonly "compaction.completed"?: MemoryRecallHandler<MemoryCompactionCompletedContext>;
    };
    readonly capture?: {
        readonly "compaction.requested"?: MemoryCaptureHandler<MemoryCompactionRequestedContext>;
        readonly "turn.completed"?: MemoryCaptureHandler<MemoryTurnCompletedContext>;
    };
    readonly tools?: (context: MemoryToolsContext) => Promise<MemoryToolSet | null>;
}
export type MemoryVisibility = "scope" | "session";
export interface MemoryDefinition {
    readonly description?: string;
    readonly namespace?: MemoryNamespaceDefinition;
    readonly provider: MemoryProvider;
    readonly scope: MemoryScopeDefinition;
    readonly visibility?: MemoryVisibility;
}
export type DefinedMemory<T extends MemoryDefinition = MemoryDefinition> = T & {
    readonly [MEMORY_DEFINITION_BRAND]: true;
};
export declare function defineMemoryProvider<const T extends MemoryProvider>(provider: ExactDefinition<T, MemoryProvider>): T;
export declare function defineMemory<const T extends MemoryDefinition>(definition: ExactDefinition<T, MemoryDefinition>): DefinedMemory<T>;
export declare function defaultNamespace(context: MemoryNamespaceContext): string;