import { TypedDocumentNode } from "@graphql-typed-document-node/core";

//#region src/util/types.d.ts
interface Headers {
  get(name: string): string | null;
  forEach(callbackfn: (value: string, key: string) => void): void;
}
interface RequestResult {
  ok: boolean;
  headers: Headers;
  json: () => Promise<unknown>;
  status: number;
}
interface FetchOptions {
  method?: string;
  headers?: any;
  body?: any;
}
type GraphQLFieldError = {
  message: string;
  locations: {
    line: number;
    column: number;
  }[];
  path?: (string | number)[];
  extensions?: Record<string, unknown>;
};
type DeepNullable<T> = T extends (infer R)[] ? (DeepNullable<R> | null)[] : T extends Record<string, any> ? { [P in keyof T]: DeepNullable<T[P]> | null } | null : T | null;
//#endregion
//#region src/GraphQLRequestError.d.ts
declare class GraphQLRequestError<TResponse extends RequestResult = Response> extends Error {
  query: string;
  variables?: Record<string, unknown>;
  response: TResponse;
  extensions?: Record<string, unknown>;
  fieldErrors?: GraphQLFieldError[];
  constructor({
    query,
    variables,
    response,
    message,
    extensions,
    fieldErrors
  }: {
    query: string;
    variables?: Record<string, unknown>;
    response: TResponse;
    message: string;
    extensions?: Record<string, unknown>;
    fieldErrors?: GraphQLFieldError[];
  });
}
//#endregion
//#region src/AwesomeGraphQLClient.d.ts
declare class AwesomeGraphQLClient<TQuery = string, TFetchOptions extends FetchOptions = RequestInit, TRequestResult extends RequestResult = Response> {
  private endpoint;
  private fetch;
  private fetchOptions?;
  private formatQuery?;
  private FormData;
  private onError?;
  private isFileUpload;
  constructor(config: {
    /** GraphQL endpoint */
    endpoint: string;
    /** Fetch polyfill if necessary */
    fetch?: (url: string, options?: any) => Promise<TRequestResult>;
    /** FormData polyfill if necessary */
    FormData?: any;
    /** Overrides for fetch options */
    fetchOptions?: TFetchOptions;
    /** Custom query formatter */
    formatQuery?: (query: TQuery) => string;
    /** Callback will be called on error  */
    onError?: (error: GraphQLRequestError | Error) => void;
    /** Custom predicate function for checking if value is a file */
    isFileUpload?: (value: unknown) => boolean;
  });
  private createRequestBody;
  /**
  * Sets a new GraphQL endpoint
  *
  * @param endpoint new overrides for endpoint
  */
  setEndpoint(endpoint: string): void;
  /**
  * Returns current GraphQL endpoint
  */
  getEndpoint(): string;
  /**
  * Sets new overrides for fetch options
  *
  * @param fetchOptions new overrides for fetch options
  */
  setFetchOptions(fetchOptions: TFetchOptions): void;
  /**
  * Returns current overrides for fetch options
  */
  getFetchOptions(): TFetchOptions | undefined;
  /**
  * Sends GraphQL Request and returns object with 'ok: true', 'data' and 'response' fields
  * or with 'ok: false' and 'error' fields.
  * Notice: this function never throws
  *
  * @example
  * const result = await requestSafe(...)
  * if (!result.ok) {
  *   throw result.error
  * }
  * console.log(result.data)
  *
  * @param query query
  * @param variables variables
  * @param fetchOptions overrides for fetch options
  */
  requestSafe<TData extends Record<string, any>, TVariables extends Record<string, any> = Record<string, never>>(query: TQuery extends TypedDocumentNode ? TypedDocumentNode<TData, TVariables> : TQuery, variables?: TVariables, fetchOptions?: TFetchOptions): Promise<{
    ok: true;
    data: TData;
    response: TRequestResult;
  } | {
    ok: false;
    partialData?: DeepNullable<TData>;
    error: GraphQLRequestError<TRequestResult> | Error;
  }>;
  /**
  * Makes GraphQL request and returns data or throws an error
  *
  * @example
  * const data = await request(...)
  *
  * @param query query
  * @param variables variables
  * @param fetchOptions overrides for fetch options
  */
  request<TData extends Record<string, any>, TVariables extends Record<string, any> = Record<string, never>>(query: TQuery extends TypedDocumentNode ? TypedDocumentNode<TData, TVariables> : TQuery, variables?: TVariables, fetchOptions?: TFetchOptions): Promise<TData>;
}
//#endregion
//#region src/util/gql.d.ts
/**
* Fake `graphql-tag`.
* Recommended if you're using `graphql-tag` only for syntax highlighting
* and static analysis such as linting and types generation.
* It has less computational cost and makes overall smaller bundles. See:
* https://github.com/lynxtaa/awesome-graphql-client#approach-2-use-fake-graphql-tag
*/
declare const gql: (strings: TemplateStringsArray, ...values: unknown[]) => string;
//#endregion
//#region src/util/isFileUpload.d.ts
type StreamLike = {
  pipe: (...args: unknown[]) => unknown;
};
/** Uploadable file */
type FileUpload = File | Blob | Buffer | StreamLike | Promise<unknown>;
/**
* Returns true if value is a file.
* Supports File, Blob, Buffer and stream-like instances
*
* @param value incoming value
*/
declare const isFileUpload: (value: unknown) => value is FileUpload;
//#endregion
export { AwesomeGraphQLClient, type FileUpload, GraphQLRequestError, gql, isFileUpload };