import { GraphQLResolveInfo } from 'graphql';
export type Maybe<T> = T | null;
export type Exact<T extends { [key: string]: unknown }> = { [K in keyof T]: T[K] };
export type RequireFields<T, K extends keyof T> = { [X in Exclude<keyof T, K>]?: T[X] } &
  { [P in K]-?: NonNullable<T[P]> };
/** All built-in and custom scalars, mapped to their actual values */
export type Scalars = {
  ID: string;
  String: string;
  Boolean: boolean;
  Int: number;
  Float: number;
};

export type User = {
  __typename?: 'User';
  id: Scalars['Int'];
  name: Scalars['String'];
  email: Scalars['String'];
};

export type QueryRoot = {
  __typename?: 'QueryRoot';
  allUsers: Array<Maybe<User>>;
  userById?: Maybe<User>;
  answer: Array<Scalars['Int']>;
};

export type QueryRootUserByIdArgs = {
  id: Scalars['Int'];
};

export type SubscriptionRoot = {
  __typename?: 'SubscriptionRoot';
  newUser?: Maybe<User>;
};

export type ResolverTypeWrapper<T> = Promise<T> | T;

export type LegacyStitchingResolver<TResult, TParent, TContext, TArgs> = {
  fragment: string;
  resolve: ResolverFn<TResult, TParent, TContext, TArgs>;
};

export type NewStitchingResolver<TResult, TParent, TContext, TArgs> = {
  selectionSet: string;
  resolve: ResolverFn<TResult, TParent, TContext, TArgs>;
};
export type StitchingResolver<TResult, TParent, TContext, TArgs> =
  | LegacyStitchingResolver<TResult, TParent, TContext, TArgs>
  | NewStitchingResolver<TResult, TParent, TContext, TArgs>;
export type Resolver<TResult, TParent = {}, TContext = {}, TArgs = {}> =
  | ResolverFn<TResult, TParent, TContext, TArgs>
  | StitchingResolver<TResult, TParent, TContext, TArgs>;

export type ResolverFn<TResult, TParent, TContext, TArgs> = (
  parent: TParent,
  args: TArgs,
  context: TContext,
  info: GraphQLResolveInfo
) => Promise<TResult> | TResult;

export type SubscriptionSubscribeFn<TResult, TParent, TContext, TArgs> = (
  parent: TParent,
  args: TArgs,
  context: TContext,
  info: GraphQLResolveInfo
) => AsyncIterator<TResult> | Promise<AsyncIterator<TResult>>;

export type SubscriptionResolveFn<TResult, TParent, TContext, TArgs> = (
  parent: TParent,
  args: TArgs,
  context: TContext,
  info: GraphQLResolveInfo
) => TResult | Promise<TResult>;

export interface SubscriptionSubscriberObject<TResult, TKey extends string, TParent, TContext, TArgs> {
  subscribe: SubscriptionSubscribeFn<{ [key in TKey]: TResult }, TParent, TContext, TArgs>;
  resolve?: SubscriptionResolveFn<TResult, { [key in TKey]: TResult }, TContext, TArgs>;
}

export interface SubscriptionResolverObject<TResult, TParent, TContext, TArgs> {
  subscribe: SubscriptionSubscribeFn<any, TParent, TContext, TArgs>;
  resolve: SubscriptionResolveFn<TResult, any, TContext, TArgs>;
}

export type SubscriptionObject<TResult, TKey extends string, TParent, TContext, TArgs> =
  | SubscriptionSubscriberObject<TResult, TKey, TParent, TContext, TArgs>
  | SubscriptionResolverObject<TResult, TParent, TContext, TArgs>;

export type SubscriptionResolver<TResult, TKey extends string, TParent = {}, TContext = {}, TArgs = {}> =
  | ((...args: any[]) => SubscriptionObject<TResult, TKey, TParent, TContext, TArgs>)
  | SubscriptionObject<TResult, TKey, TParent, TContext, TArgs>;

export type TypeResolveFn<TTypes, TParent = {}, TContext = {}> = (
  parent: TParent,
  context: TContext,
  info: GraphQLResolveInfo
) => Maybe<TTypes> | Promise<Maybe<TTypes>>;

export type IsTypeOfResolverFn<T = {}, TContext = {}> = (
  obj: T,
  context: TContext,
  info: GraphQLResolveInfo
) => boolean | Promise<boolean>;

export type NextResolverFn<T> = () => Promise<T>;

export type DirectiveResolverFn<TResult = {}, TParent = {}, TContext = {}, TArgs = {}> = (
  next: NextResolverFn<TResult>,
  parent: TParent,
  args: TArgs,
  context: TContext,
  info: GraphQLResolveInfo
) => TResult | Promise<TResult>;

/** Mapping between all available schema types and the resolvers types */
export type ResolversTypes = {
  User: ResolverTypeWrapper<User>;
  Int: ResolverTypeWrapper<Scalars['Int']>;
  String: ResolverTypeWrapper<Scalars['String']>;
  QueryRoot: ResolverTypeWrapper<{}>;
  SubscriptionRoot: ResolverTypeWrapper<{}>;
  Boolean: ResolverTypeWrapper<Scalars['Boolean']>;
};

/** Mapping between all available schema types and the resolvers parents */
export type ResolversParentTypes = {
  User: User;
  Int: Scalars['Int'];
  String: Scalars['String'];
  QueryRoot: {};
  SubscriptionRoot: {};
  Boolean: Scalars['Boolean'];
};

export type UserResolvers<
  ContextType = any,
  ParentType extends ResolversParentTypes['User'] = ResolversParentTypes['User']
> = {
  id?: Resolver<ResolversTypes['Int'], ParentType, ContextType>;
  name?: Resolver<ResolversTypes['String'], ParentType, ContextType>;
  email?: Resolver<ResolversTypes['String'], ParentType, ContextType>;
  __isTypeOf?: IsTypeOfResolverFn<ParentType, ContextType>;
};

export type QueryRootResolvers<
  ContextType = any,
  ParentType extends ResolversParentTypes['QueryRoot'] = ResolversParentTypes['QueryRoot']
> = {
  allUsers?: Resolver<Array<Maybe<ResolversTypes['User']>>, ParentType, ContextType>;
  userById?: Resolver<
    Maybe<ResolversTypes['User']>,
    ParentType,
    ContextType,
    RequireFields<QueryRootUserByIdArgs, 'id'>
  >;
  answer?: Resolver<Array<ResolversTypes['Int']>, ParentType, ContextType>;
};

export type SubscriptionRootResolvers<
  ContextType = any,
  ParentType extends ResolversParentTypes['SubscriptionRoot'] = ResolversParentTypes['SubscriptionRoot']
> = {
  newUser?: SubscriptionResolver<Maybe<ResolversTypes['User']>, 'newUser', ParentType, ContextType>;
};

export type Resolvers<ContextType = any> = {
  User?: UserResolvers<ContextType>;
  QueryRoot?: QueryRootResolvers<ContextType>;
  SubscriptionRoot?: SubscriptionRootResolvers<ContextType>;
};

/**
 * @deprecated
 * Use "Resolvers" root object instead. If you wish to get "IResolvers", add "typesPrefix: I" to your config.
 */
export type IResolvers<ContextType = any> = Resolvers<ContextType>;