import { DocumentNode, GraphQLError } from 'graphql';
import { TypedDocumentNode } from '@graphql-typed-document-node/core';

export type ErrorPayload = {
    error: string;
    status: number;
    message: string;
};
export type RequestOptions<V extends Variables = Variables, T = any> = NhostGraphqlRequestConfig & {
    document: RequestDocument | TypedDocumentNode<T, V>;
} & (V extends Record<any, never> ? {
    variables?: V;
} : keyof RemoveIndex<V> extends never ? {
    variables?: V;
} : {
    variables: V;
});
export type Variables = {
    [key: string]: any;
};
export type RequestDocument = string | DocumentNode;
export type RemoveIndex<T> = {
    [K in keyof T as string extends K ? never : number extends K ? never : K]: T[K];
};
export interface NhostGraphqlConstructorParams {
    /**
     * GraphQL endpoint.
     */
    url: string;
    /**
     * Admin secret. When set, it is sent as an `x-hasura-admin-secret` header for all requests.
     */
    adminSecret?: string;
}
export type NhostGraphqlRequestResponse<T = unknown> = {
    data: null;
    error: GraphQLError[] | ErrorPayload;
} | {
    data: T;
    error: null;
};
/** Subset of RequestInit parameters that are supported by the graphql client */
export interface NhostGraphqlRequestConfig {
    headers?: Record<string, string>;
}
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