import type { z } from 'zod/v4';
import type { SuccessfulHttpStatusCode } from '../HttpStatusCodes.ts';
import type { ValueOf } from '../typeUtils.ts';
import type { BlobResponseHandle, ResponseEntry, ResponsesByStatusCode } from './contractResponse.ts';
type ExtractSuccessResponses<T extends ResponsesByStatusCode> = ValueOf<T, Extract<keyof T, SuccessfulHttpStatusCode | '2xx' | 'default'>>;
type FlatContentSuccessResponses<TEntry> = (TEntry extends {
    content: infer TContent;
} ? TContent[keyof TContent] : never) | (TEntry extends {
    allowNoBody: true;
} ? {
    allowNoBody: true;
} : never);
type FlatSuccessResponses<T extends ResponsesByStatusCode> = Exclude<ExtractSuccessResponses<T>, ResponseEntry> | FlatContentSuccessResponses<Extract<ExtractSuccessResponses<T>, ResponseEntry>>;
type SseSchemaOf<T> = T extends {
    _tag: 'SseBody';
    schemaByEventName: infer S;
} ? S : never;
/**
 * Extracts the merged SSE event schema map from a responsesByStatusCode map.
 * Returns the union of all `schemaByEventName` objects from SSE responses (content-map
 * `sseBody` descriptors).
 */
export type InferSseSuccessResponses<T extends ResponsesByStatusCode> = SseSchemaOf<FlatSuccessResponses<T>>;
/**
 * Returns true if any success status code entry is a JSON Zod schema
 * (a bare schema or a content-map JSON descriptor).
 */
export type HasAnyJsonSuccessResponse<T extends ResponsesByStatusCode> = Extract<FlatSuccessResponses<T>, z.ZodType> extends never ? false : true;
type JsonSchemaOf<T> = T extends z.ZodType ? T : never;
/**
 * Extracts the union of JSON Zod schemas from all success responses.
 * Blob and SSE responses are excluded.
 */
export type InferJsonSuccessResponses<T extends ResponsesByStatusCode> = JsonSchemaOf<FlatSuccessResponses<T>>;
type NonSseBodyOf<T> = T extends {
    _tag: 'SseBody';
} ? never : T extends {
    _tag: 'BlobBody';
} ? BlobResponseHandle : T extends z.ZodType ? z.output<T> : undefined;
/**
 * Infers the TypeScript output type of all non-SSE success responses.
 * JSON schemas → z.output<T>. A blob entry → BlobResponseHandle. A no-body entry → undefined.
 * An SSE entry → never (excluded). Content-map entries are unpacked before mapping.
 */
export type InferNonSseSuccessResponses<T extends ResponsesByStatusCode> = NonSseBodyOf<FlatSuccessResponses<T>>;
/**
 * Discriminated union of SSE events inferred from a schemaByEventName map.
 * Aligns with the browser MessageEvent shape.
 */
export type SseEventOf<S> = {
    [K in keyof S]: K extends string ? {
        type: K;
        data: S[K] extends z.ZodType ? z.output<S[K]> : never;
        lastEventId: string;
        retry: number | undefined;
    } : never;
}[keyof S];
/**
 * Returns true if any success status code entry is an SSE response
 * (a content-map `sseBody` descriptor).
 */
export type HasAnySseSuccessResponse<T extends ResponsesByStatusCode> = Extract<FlatSuccessResponses<T>, {
    _tag: 'SseBody';
}> extends never ? false : true;
/**
 * Returns true if any success status code entry has a non-SSE response
 * (JSON, blob, or no-body). Mirrors HasAnySseSuccessResponse.
 */
export type HasAnyNonSseSuccessResponse<T extends ResponsesByStatusCode> = Exclude<FlatSuccessResponses<T>, {
    _tag: 'SseBody';
}> extends never ? false : true;
/**
 * Classifies a contract's response mode into one of three cases:
 * - 'dual'    — SSE + non-SSE success responses; caller chooses via streaming param
 * - 'sse'     — SSE-only success responses; always streams
 * - 'non-sse' — JSON / blob / no-body; never streams
 */
export type ContractResponseMode<T extends ResponsesByStatusCode> = HasAnySseSuccessResponse<T> extends true ? HasAnyNonSseSuccessResponse<T> extends true ? 'dual' : 'sse' : 'non-sse';
/**
 * Union of response mode literals available for a given responsesByStatusCode map.
 */
export type AvailableResponseModes<T extends ResponsesByStatusCode> = (HasAnyJsonSuccessResponse<T> extends true ? 'json' : never) | (HasAnySseSuccessResponse<T> extends true ? 'sse' : never) | (Extract<FlatSuccessResponses<T>, {
    _tag: 'BlobBody';
}> extends never ? never : 'blob') | (Extract<FlatSuccessResponses<T>, {
    allowNoBody: true;
}> extends never ? never : 'noContent');
export {};