import { ConstrainValidator, Method, ServerFnTypeOrTypeFn } from './createServerFn.js';
import { Assign, Constrain, Expand, IntersectAssign, ResolveValidatorInput, ResolveValidatorOutput, SerializerStringify } from '@tanstack/router-core';
export type AssignAllMiddleware<TMiddlewares, TType extends keyof AnyMiddleware['_types'], TAcc = undefined> = TMiddlewares extends readonly [
    infer TMiddleware extends AnyMiddleware,
    ...infer TRest
] ? AssignAllMiddleware<TRest, TType, Assign<TAcc, TMiddleware['_types'][TType]>> : TAcc;
/**
 * Recursively resolve the client context type produced by a sequence of middleware
 */
export type AssignAllClientContextBeforeNext<TMiddlewares, TClientContext = undefined> = unknown extends TClientContext ? TClientContext : Assign<AssignAllMiddleware<TMiddlewares, 'allClientContextBeforeNext'>, TClientContext>;
export type AssignAllClientSendContext<TMiddlewares, TSendContext = undefined> = unknown extends TSendContext ? TSendContext : Assign<AssignAllMiddleware<TMiddlewares, 'allClientSendContext'>, TSendContext>;
export type AssignAllClientContextAfterNext<TMiddlewares, TClientContext = undefined, TSendContext = undefined> = unknown extends TClientContext ? Assign<TClientContext, TSendContext> : Assign<AssignAllMiddleware<TMiddlewares, 'allClientContextAfterNext'>, Assign<TClientContext, TSendContext>>;
/**
 * Recursively resolve the server context type produced by a sequence of middleware
 */
export type AssignAllServerContext<TMiddlewares, TSendContext = undefined, TServerContext = undefined> = unknown extends TSendContext ? Assign<TSendContext, TServerContext> : Assign<AssignAllMiddleware<TMiddlewares, 'allServerContext'>, Assign<TSendContext, TServerContext>>;
export type AssignAllServerSendContext<TMiddlewares, TSendContext = undefined> = unknown extends TSendContext ? TSendContext : Assign<AssignAllMiddleware<TMiddlewares, 'allServerSendContext'>, TSendContext>;
export type IntersectAllMiddleware<TMiddlewares, TType extends keyof AnyMiddleware['_types'], TAcc = undefined> = TMiddlewares extends readonly [
    infer TMiddleware extends AnyMiddleware,
    ...infer TRest
] ? IntersectAllMiddleware<TRest, TType, IntersectAssign<TAcc, TMiddleware['_types'][TType]>> : TAcc;
/**
 * Recursively resolve the input type produced by a sequence of middleware
 */
export type IntersectAllValidatorInputs<TMiddlewares, TValidator> = unknown extends TValidator ? TValidator : IntersectAssign<IntersectAllMiddleware<TMiddlewares, 'allInput'>, TValidator extends undefined ? undefined : ResolveValidatorInput<TValidator>>;
/**
 * Recursively merge the output type produced by a sequence of middleware
 */
export type IntersectAllValidatorOutputs<TMiddlewares, TValidator> = unknown extends TValidator ? TValidator : IntersectAssign<IntersectAllMiddleware<TMiddlewares, 'allOutput'>, TValidator extends undefined ? undefined : ResolveValidatorOutput<TValidator>>;
export interface MiddlewareOptions<in out TMiddlewares, in out TValidator, in out TServerContext, in out TClientContext> {
    validateClient?: boolean;
    middleware?: TMiddlewares;
    validator?: ConstrainValidator<TValidator>;
    client?: MiddlewareClientFn<TMiddlewares, TValidator, TServerContext, TClientContext>;
    server?: MiddlewareServerFn<TMiddlewares, TValidator, TServerContext, unknown, unknown>;
}
export type MiddlewareServerNextFn<TMiddlewares, TServerSendContext> = <TNewServerContext = undefined, TSendContext = undefined>(ctx?: {
    context?: TNewServerContext;
    sendContext?: SerializerStringify<TSendContext>;
}) => Promise<ServerResultWithContext<TMiddlewares, TServerSendContext, TNewServerContext, TSendContext>>;
export interface MiddlewareServerFnOptions<in out TMiddlewares, in out TValidator, in out TServerSendContext> {
    data: Expand<IntersectAllValidatorOutputs<TMiddlewares, TValidator>>;
    context: Expand<AssignAllServerContext<TMiddlewares, TServerSendContext>>;
    next: MiddlewareServerNextFn<TMiddlewares, TServerSendContext>;
    method: Method;
    filename: string;
    functionId: string;
    signal: AbortSignal;
}
export type MiddlewareServerFn<TMiddlewares, TValidator, TServerSendContext, TNewServerContext, TSendContext> = (options: MiddlewareServerFnOptions<TMiddlewares, TValidator, TServerSendContext>) => MiddlewareServerFnResult<TMiddlewares, TServerSendContext, TNewServerContext, TSendContext>;
export type MiddlewareServerFnResult<TMiddlewares, TServerSendContext, TServerContext, TSendContext> = Promise<ServerResultWithContext<TMiddlewares, TServerSendContext, TServerContext, TSendContext>> | ServerResultWithContext<TMiddlewares, TServerSendContext, TServerContext, TSendContext>;
export type MiddlewareClientNextFn<TMiddlewares> = <TSendContext = undefined, TNewClientContext = undefined>(ctx?: {
    context?: TNewClientContext;
    sendContext?: SerializerStringify<TSendContext>;
    headers?: HeadersInit;
}) => Promise<ClientResultWithContext<TMiddlewares, TSendContext, TNewClientContext>>;
export interface MiddlewareClientFnOptions<in out TMiddlewares, in out TValidator> {
    data: Expand<IntersectAllValidatorInputs<TMiddlewares, TValidator>>;
    context: Expand<AssignAllClientContextBeforeNext<TMiddlewares>>;
    sendContext: Expand<AssignAllServerSendContext<TMiddlewares>>;
    method: Method;
    signal: AbortSignal;
    next: MiddlewareClientNextFn<TMiddlewares>;
    filename: string;
    functionId: string;
    type: ServerFnTypeOrTypeFn<Method, TMiddlewares, TValidator>;
}
export type MiddlewareClientFn<TMiddlewares, TValidator, TSendContext, TClientContext> = (options: MiddlewareClientFnOptions<TMiddlewares, TValidator>) => MiddlewareClientFnResult<TMiddlewares, TSendContext, TClientContext>;
export type MiddlewareClientFnResult<TMiddlewares, TSendContext, TClientContext> = Promise<ClientResultWithContext<TMiddlewares, TSendContext, TClientContext>> | ClientResultWithContext<TMiddlewares, TSendContext, TClientContext>;
export type ServerResultWithContext<in out TMiddlewares, in out TServerSendContext, in out TServerContext, in out TSendContext> = {
    'use functions must return the result of next()': true;
    _types: {
        context: TServerContext;
        sendContext: TSendContext;
    };
    context: Expand<AssignAllServerContext<TMiddlewares, TServerSendContext, TServerContext>>;
    sendContext: Expand<AssignAllClientSendContext<TMiddlewares, TSendContext>>;
};
export type ClientResultWithContext<in out TMiddlewares, in out TSendContext, in out TClientContext> = {
    'use functions must return the result of next()': true;
    context: Expand<AssignAllClientContextAfterNext<TMiddlewares, TClientContext>>;
    sendContext: Expand<AssignAllServerSendContext<TMiddlewares, TSendContext>>;
    headers: HeadersInit;
};
export type AnyMiddleware = MiddlewareWithTypes<any, any, any, any, any, any>;
export interface MiddlewareTypes<in out TMiddlewares, in out TValidator, in out TServerContext, in out TServerSendContext, in out TClientContext, in out TClientSendContext> {
    middlewares: TMiddlewares;
    input: ResolveValidatorInput<TValidator>;
    allInput: IntersectAllValidatorInputs<TMiddlewares, TValidator>;
    output: ResolveValidatorOutput<TValidator>;
    allOutput: IntersectAllValidatorOutputs<TMiddlewares, TValidator>;
    clientContext: TClientContext;
    allClientContextBeforeNext: AssignAllClientContextBeforeNext<TMiddlewares, TClientContext>;
    allClientContextAfterNext: AssignAllClientContextAfterNext<TMiddlewares, TClientContext, TClientSendContext>;
    serverContext: TServerContext;
    serverSendContext: TServerSendContext;
    allServerSendContext: AssignAllServerSendContext<TMiddlewares, TServerSendContext>;
    allServerContext: AssignAllServerContext<TMiddlewares, TServerSendContext, TServerContext>;
    clientSendContext: TClientSendContext;
    allClientSendContext: AssignAllClientSendContext<TMiddlewares, TClientSendContext>;
    validator: TValidator;
}
export interface MiddlewareWithTypes<TMiddlewares, TValidator, TServerContext, TServerSendContext, TClientContext, TClientSendContext> {
    _types: MiddlewareTypes<TMiddlewares, TValidator, TServerContext, TServerSendContext, TClientContext, TClientSendContext>;
    options: MiddlewareOptions<TMiddlewares, TValidator, TServerContext, TClientContext>;
}
export interface MiddlewareAfterValidator<TMiddlewares, TValidator> extends MiddlewareWithTypes<TMiddlewares, TValidator, undefined, undefined, undefined, undefined>, MiddlewareServer<TMiddlewares, TValidator, undefined, undefined>, MiddlewareClient<TMiddlewares, TValidator> {
}
export interface MiddlewareValidator<TMiddlewares> {
    validator: <TNewValidator>(input: ConstrainValidator<TNewValidator>) => MiddlewareAfterValidator<TMiddlewares, TNewValidator>;
}
export interface MiddlewareAfterServer<TMiddlewares, TValidator, TServerContext, TServerSendContext, TClientContext, TClientSendContext> extends MiddlewareWithTypes<TMiddlewares, TValidator, TServerContext, TServerSendContext, TClientContext, TClientSendContext> {
}
export interface MiddlewareServer<TMiddlewares, TValidator, TServerSendContext, TClientContext> {
    server: <TNewServerContext = undefined, TSendContext = undefined>(server: MiddlewareServerFn<TMiddlewares, TValidator, TServerSendContext, TNewServerContext, TSendContext>) => MiddlewareAfterServer<TMiddlewares, TValidator, TNewServerContext, TServerSendContext, TClientContext, TSendContext>;
}
export interface MiddlewareAfterClient<TMiddlewares, TValidator, TServerSendContext, TClientContext> extends MiddlewareWithTypes<TMiddlewares, TValidator, undefined, TServerSendContext, TClientContext, undefined>, MiddlewareServer<TMiddlewares, TValidator, TServerSendContext, TClientContext> {
}
export interface MiddlewareClient<TMiddlewares, TValidator> {
    client: <TSendServerContext = undefined, TNewClientContext = undefined>(client: MiddlewareClientFn<TMiddlewares, TValidator, TSendServerContext, TNewClientContext>) => MiddlewareAfterClient<TMiddlewares, TValidator, TSendServerContext, TNewClientContext>;
}
export interface MiddlewareAfterMiddleware<TMiddlewares> extends MiddlewareWithTypes<TMiddlewares, undefined, undefined, undefined, undefined, undefined>, MiddlewareServer<TMiddlewares, undefined, undefined, undefined>, MiddlewareClient<TMiddlewares, undefined>, MiddlewareValidator<TMiddlewares> {
}
export interface Middleware extends MiddlewareAfterMiddleware<unknown> {
    middleware: <const TNewMiddlewares = undefined>(middlewares: Constrain<TNewMiddlewares, ReadonlyArray<AnyMiddleware>>) => MiddlewareAfterMiddleware<TNewMiddlewares>;
}
export declare function createMiddleware(options?: {
    validateClient?: boolean;
}, __opts?: MiddlewareOptions<unknown, undefined, undefined, undefined>): Middleware;