import {
  GraphQLSchema,
  GraphQLSchemaConfig,
  GraphQLObjectTypeConfig,
  GraphQLInterfaceType,
  GraphQLObjectType,
  GraphQLInputObjectTypeConfig,
  GraphQLEnumTypeConfig,
  GraphQLFieldConfigArgumentMap,
  GraphQLFieldConfigMap,
  GraphQLFieldConfig,
  GraphQLEnumValueConfigMap,
  GraphQLEnumValueConfig,
  GraphQLInputFieldConfigMap,
  GraphQLInputFieldConfig,
  GraphQLUnionTypeConfig,
  GraphQLInterfaceTypeConfig,
} from "graphql";
import { EventEmitter } from "events";

type mixed = Record<string, any> | string | number | boolean | undefined | null;

export interface Options {
  [str: string]: any;
}

export interface Plugin {
  (builder: SchemaBuilder, options: Options): Promise<void> | void;
  displayName?: string;
}

export type TriggerChangeType = () => void;
export type WatchUnwatch = (triggerChange: TriggerChangeType) => void;

export type SchemaListener = (newSchema: GraphQLSchema) => void;
export type DataForType = {
  [str: string]: Array<mixed>;
};

export type InitObject = never;

export interface Build {
  graphql: typeof import("graphql");
  [str: string]: any;
}
export interface Inflection {
  [str: string]: any;
}
// eslint-disable-next-line @typescript-eslint/no-unused-vars
export interface Scope<Type> {
  [str: string]: any;
}
export interface Context<Type> {
  scope: Scope<Type>;
  [str: string]: any;
}

export interface Hook<Type> {
  (input: Type, build: Build, context: Context<Type>): Type;
  displayName?: string;
  provides?: Array<string>;
  before?: Array<string>;
  after?: Array<string>;
}

export default class SchemaBuilder extends EventEmitter {
  hook(
    hookName: "build",
    fn: Hook<Build>,
    provides?: Array<string>,
    before?: Array<string>,
    after?: Array<string>
  ): void;
  hook(
    hookName: "inflection",
    fn: Hook<Inflection>,
    provides?: Array<string>,
    before?: Array<string>,
    after?: Array<string>
  ): void;
  hook(
    hookName: "init",
    fn: Hook<InitObject>,
    provides?: Array<string>,
    before?: Array<string>,
    after?: Array<string>
  ): void;
  hook(
    hookName: "GraphQLSchema",
    fn: Hook<GraphQLSchemaConfig>,
    provides?: Array<string>,
    before?: Array<string>,
    after?: Array<string>
  ): void;
  hook<TSource, TContext>(
    hookName: "GraphQLObjectType",
    fn: Hook<GraphQLObjectTypeConfig<TSource, TContext>>,
    provides?: Array<string>,
    before?: Array<string>,
    after?: Array<string>
  ): void;
  hook(
    hookName: "GraphQLObjectType:interfaces",
    fn: Hook<Array<GraphQLInterfaceType>>,
    provides?: Array<string>,
    before?: Array<string>,
    after?: Array<string>
  ): void;
  hook<TSource, TContext>(
    hookName: "GraphQLObjectType:fields",
    fn: Hook<GraphQLFieldConfigMap<TSource, TContext>>,
    provides?: Array<string>,
    before?: Array<string>,
    after?: Array<string>
  ): void;
  hook<TSource, TContext>(
    hookName: "GraphQLObjectType:fields:field",
    fn: Hook<GraphQLFieldConfig<TSource, TContext>>,
    provides?: Array<string>,
    before?: Array<string>,
    after?: Array<string>
  ): void;
  hook(
    hookName: "GraphQLObjectType:fields:field:args",
    fn: Hook<GraphQLFieldConfigArgumentMap>,
    provides?: Array<string>,
    before?: Array<string>,
    after?: Array<string>
  ): void;
  hook(
    hookName: "GraphQLInputObjectType",
    fn: Hook<GraphQLInputObjectTypeConfig>,
    provides?: Array<string>,
    before?: Array<string>,
    after?: Array<string>
  ): void;
  hook(
    hookName: "GraphQLInputObjectType:fields",
    fn: Hook<GraphQLInputFieldConfigMap>,
    provides?: Array<string>,
    before?: Array<string>,
    after?: Array<string>
  ): void;
  hook(
    hookName: "GraphQLInputObjectType:fields:field",
    fn: Hook<GraphQLInputFieldConfig>,
    provides?: Array<string>,
    before?: Array<string>,
    after?: Array<string>
  ): void;
  hook(
    hookName: "GraphQLEnumType",
    fn: Hook<GraphQLEnumTypeConfig>,
    provides?: Array<string>,
    before?: Array<string>,
    after?: Array<string>
  ): void;
  hook(
    hookName: "GraphQLEnumType:values",
    fn: Hook<GraphQLEnumValueConfigMap>,
    provides?: Array<string>,
    before?: Array<string>,
    after?: Array<string>
  ): void;
  hook(
    hookName: "GraphQLEnumType:values:value",
    fn: Hook<GraphQLEnumValueConfig>,
    provides?: Array<string>,
    before?: Array<string>,
    after?: Array<string>
  ): void;
  hook<TSource, TContext>(
    hookName: "GraphQLUnionType",
    fn: Hook<GraphQLUnionTypeConfig<TSource, TContext>>,
    provides?: Array<string>,
    before?: Array<string>,
    after?: Array<string>
  ): void;
  hook(
    hookName: "GraphQLUnionType:types",
    fn: Hook<Array<GraphQLObjectType>>,
    provides?: Array<string>,
    before?: Array<string>,
    after?: Array<string>
  ): void;
  hook<TSource, TContext>(
    hookName: "GraphQLInterfaceType",
    fn: Hook<GraphQLInterfaceTypeConfig<TSource, TContext>>,
    provides?: Array<string>,
    before?: Array<string>,
    after?: Array<string>
  ): void;
  hook<TSource, TContext>(
    hookName: "GraphQLInterfaceType:fields",
    fn: Hook<GraphQLFieldConfigMap<TSource, TContext>>,
    provides?: Array<string>,
    before?: Array<string>,
    after?: Array<string>
  ): void;
  hook<TSource, TContext>(
    hookName: "GraphQLInterfaceType:fields:field",
    fn: Hook<GraphQLFieldConfig<TSource, TContext>>,
    provides?: Array<string>,
    before?: Array<string>,
    after?: Array<string>
  ): void;
  hook(
    hookName: "GraphQLInterfaceType:fields:field:args",
    fn: Hook<GraphQLFieldConfigArgumentMap>,
    provides?: Array<string>,
    before?: Array<string>,
    after?: Array<string>
  ): void;
  hook(
    hookName: "finalize",
    fn: Hook<GraphQLSchema>,
    provides?: Array<string>,
    before?: Array<string>,
    after?: Array<string>
  ): void;

  /*
  applyHooks(
    build: Build,
    hookName: "build",
    input: Build,
    context: Context<Build>,
    debugStr?: string
  ): Build;
  applyHooks(
    build: Build,
    hookName: "inflection",
    input: Inflection,
    context: Context<Inflection>,
    debugStr?: string
  ): Inflection;
  applyHooks(
    build: Build,
    hookName: "init",
    input: InitObject,
    context: Context<InitObject>,
    debugStr?: string
  ): InitObject;
  applyHooks(
    build: Build,
    hookName: "GraphQLSchema",
    input: GraphQLSchema,
    context: Context<GraphQLSchema>,
    debugStr?: string
  ): GraphQLSchema;
  applyHooks(
    build: Build,
    hookName: "GraphQLObjectType",
    input: GraphQLObjectType,
    context: Context<GraphQLObjectType>,
    debugStr?: string
  ): GraphQLObjectType;
  applyHooks(
    build: Build,
    hookName: "GraphQLObjectType:interfaces",
    input: Array<GraphQLInterfaceType>,
    context: Context<Array<GraphQLInterfaceType>>,
    debugStr?: string
  ): Array<GraphQLInterfaceType>;
  applyHooks(
    build: Build,
    hookName: "GraphQLObjectType:fields",
    input: GraphQLFieldConfigMap,
    context: Context<GraphQLFieldConfigMap>,
    debugStr?: string
  ): GraphQLFieldConfigMap;
  applyHooks(
    build: Build,
    hookName: "GraphQLObjectType:fields:field",
    input: GraphQLFieldConfig,
    context: Context<GraphQLFieldConfig>,
    debugStr?: string
  ): GraphQLFieldConfig;
  applyHooks(
    build: Build,
    hookName: "GraphQLObjectType:fields:field:args",
    input: GraphQLFieldConfigArgumentMap,
    context: Context<GraphQLFieldConfigArgumentMap>,
    debugStr?: string
  ): GraphQLFieldConfigArgumentMap;
  applyHooks(
    build: Build,
    hookName: "GraphQLInputObjectType",
    input: GraphQLInputObjectType,
    context: Context<GraphQLInputObjectType>,
    debugStr?: string
  ): GraphQLInputObjectType;
  applyHooks(
    build: Build,
    hookName: "GraphQLInputObjectType:fields",
    input: GraphQLInputObjectConfigFieldMap,
    context: Context<GraphQLInputObjectConfigFieldMap>,
    debugStr?: string
  ): GraphQLInputObjectConfigFieldMap;
  applyHooks(
    build: Build,
    hookName: "GraphQLInputObjectType:fields:field",
    input: GraphQLInputObjectFieldConfig,
    context: Context<GraphQLInputObjectFieldConfig>,
    debugStr?: string
  ): GraphQLInputObjectFieldConfig;
  applyHooks(
    build: Build,
    hookName: "GraphQLEnumType",
    input: GraphQLEnumType,
    context: Context<GraphQLEnumType>,
    debugStr?: string
  ): GraphQLEnumType;
  applyHooks(
    build: Build,
    hookName: "GraphQLEnumType:values",
    input: GraphQLEnumValueConfigMap,
    context: Context<GraphQLEnumValueConfigMap>,
    debugStr?: string
  ): GraphQLEnumValueConfigMap;
  applyHooks(
    build: Build,
    hookName: "GraphQLEnumType:values:value",
    input: GraphQLEnumValueConfig,
    context: Context<GraphQLEnumValueConfig>,
    debugStr?: string
  ): GraphQLEnumValueConfig;
  */

  registerWatcher(listen: WatchUnwatch, unlisten: WatchUnwatch): void;

  createBuild(): Build;

  buildSchema(): GraphQLSchema;

  watchSchema(listener?: SchemaListener): Promise<void>;

  unwatchSchema(): Promise<void>;
}