// Type definitions for styled-components 3.0
// Project: https://github.com/styled-components/styled-components
// Definitions by: Igor Oleinikov <https://github.com/Igorbek>
//                 Ihor Chulinda <https://github.com/Igmat>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
// TypeScript Version: 2.8

/// <reference types="node" />

import * as React from 'react';

export interface ThemeProps<T> {
    theme: T;
}

export type ThemedStyledProps<P, T> = P & ThemeProps<T>;
export type StyledProps<P> = ThemedStyledProps<P, any>;

export type ThemedOuterStyledProps<P, T> = P & {
    theme?: T | undefined;
    innerRef?: ((instance: any) => void) | React.RefObject<HTMLElement | SVGElement | React.Component> | undefined;
};
export type OuterStyledProps<P> = ThemedOuterStyledProps<P, any>;

export type FalseyValue = undefined | null | false;
export type Interpolation<P> =
    | FlattenInterpolation<P>
    | ReadonlyArray<FlattenInterpolation<P> | ReadonlyArray<FlattenInterpolation<P>>>;
export type FlattenInterpolation<P> = InterpolationValue | InterpolationFunction<P>;
export type InterpolationValue = string | number | Styles | FalseyValue | StyledComponentClass<any, any>;
export type SimpleInterpolation =
    | InterpolationValue
    | ReadonlyArray<InterpolationValue | ReadonlyArray<InterpolationValue>>;
export interface Styles {
    [ruleOrSelector: string]: string | number | Styles;
}

export type InterpolationFunction<P> = (props: P) => Interpolation<P>;

type Attrs<P, A extends Partial<P>, T> = {
    [K in keyof A]: ((props: ThemedStyledProps<P, T>) => A[K]) | A[K];
};

export interface StyledComponentClass<P, T, O = P> extends React.ComponentClass<ThemedOuterStyledProps<O, T>> {
    extend: ThemedStyledFunction<P, T, O>;

    withComponent<K extends keyof JSX.IntrinsicElements>(
        tag: K,
    ): StyledComponentClass<JSX.IntrinsicElements[K], T, JSX.IntrinsicElements[K] & O>;
    withComponent<U = {}>(element: React.ComponentType<U>): StyledComponentClass<U, T, U & O>;
}

export interface ThemedStyledFunction<P, T, O = P> {
    (
        strings: TemplateStringsArray,
        ...interpolations: Array<Interpolation<ThemedStyledProps<P, T>>>
    ): StyledComponentClass<P, T, O>;
    <U>(
        strings: TemplateStringsArray,
        ...interpolations: Array<Interpolation<ThemedStyledProps<P & U, T>>>
    ): StyledComponentClass<P & U, T, O & U>;
    attrs<U, A extends Partial<P & U> = {}>(
        attrs: Attrs<P & U, A, T>,
    ): ThemedStyledFunction<DiffBetween<A, P & U>, T, DiffBetween<A, O & U>>;
}

export type StyledFunction<P> = ThemedStyledFunction<P, any>;

type ThemedStyledComponentFactories<T> = {
    [TTag in keyof JSX.IntrinsicElements]: ThemedStyledFunction<JSX.IntrinsicElements[TTag], T>;
};

export interface ThemedBaseStyledInterface<T> extends ThemedStyledComponentFactories<T> {
    <P, TTag extends keyof JSX.IntrinsicElements>(tag: TTag): ThemedStyledFunction<
        P,
        T,
        P & JSX.IntrinsicElements[TTag]
    >;
    <P, O>(component: StyledComponentClass<P, T, O>): ThemedStyledFunction<P, T, O>;
    <P extends { [prop: string]: any; theme?: T | undefined }>(component: React.ComponentType<P>): ThemedStyledFunction<
        P,
        T,
        WithOptionalTheme<P, T>
    >;
}

export type ThemedStyledInterface<T> = ThemedBaseStyledInterface<Extract<keyof T, string> extends never ? any : T>;
export type StyledInterface = ThemedStyledInterface<DefaultTheme>;
// tslint:disable-next-line:no-empty-interface
export interface DefaultTheme {}

export interface ThemeProviderProps<T> {
    theme?: T | ((theme: T) => T) | undefined;
}
export type BaseThemeProviderComponent<T> = React.ComponentClass<ThemeProviderProps<T>>;
export type ThemeProviderComponent<T> = BaseThemeProviderComponent<Extract<keyof T, string> extends never ? any : T>;
export interface BaseThemedCssFunction<T> {
    (strings: TemplateStringsArray, ...interpolations: SimpleInterpolation[]): InterpolationValue[];
    <P>(strings: TemplateStringsArray, ...interpolations: Array<Interpolation<ThemedStyledProps<P, T>>>): Array<
        FlattenInterpolation<ThemedStyledProps<P, T>>
    >;
}
export type ThemedCssFunction<T> = BaseThemedCssFunction<Extract<keyof T, string> extends never ? any : T>;

// Helper type operators
type KeyofBase = keyof any;
type Diff<T extends KeyofBase, U extends KeyofBase> = ({ [P in T]: P } & { [P in U]: never })[T];
type Omit<T, K extends keyof T> = Pick<T, Diff<keyof T, K>>;
type DiffBetween<T, U> = Pick<T, Diff<keyof T, keyof U>> & Pick<U, Diff<keyof U, keyof T>>;
type WithOptionalTheme<P extends { theme?: T | undefined }, T> = Omit<P, 'theme'> & {
    theme?: T | undefined;
};

export interface ThemedStyledComponentsModule<T> {
    default: ThemedStyledInterface<T>;

    css: ThemedCssFunction<T>;
    keyframes(strings: TemplateStringsArray, ...interpolations: SimpleInterpolation[]): string;
    injectGlobal(strings: TemplateStringsArray, ...interpolations: SimpleInterpolation[]): void;
    withTheme: WithThemeFnInterface<T>;

    ThemeProvider: ThemeProviderComponent<T>;
}

declare const styled: StyledInterface;

export const css: ThemedCssFunction<DefaultTheme>;

export type BaseWithThemeFnInterface<T> = <P extends { theme?: T | undefined }>(
    component: React.ComponentType<P>,
) => React.ComponentClass<WithOptionalTheme<P, T>>;
export type WithThemeFnInterface<T> = BaseWithThemeFnInterface<Extract<keyof T, string> extends never ? any : T>;
export const withTheme: WithThemeFnInterface<DefaultTheme>;

export function keyframes(strings: TemplateStringsArray, ...interpolations: SimpleInterpolation[]): string;

export function injectGlobal(strings: TemplateStringsArray, ...interpolations: SimpleInterpolation[]): void;

export function consolidateStreamedStyles(): void;

export function isStyledComponent(target: any): target is StyledComponentClass<{}, {}>;

export const ThemeProvider: ThemeProviderComponent<object>;

interface StylesheetComponentProps {
    sheet: ServerStyleSheet;
}

interface StyleSheetManagerProps {
    sheet?: StyleSheet | undefined;
    target?: Node | undefined;
}

export class StyleSheetManager extends React.Component<StyleSheetManagerProps> {}

export class ServerStyleSheet {
    collectStyles(tree: React.ReactNode): React.ReactElement<StylesheetComponentProps>;

    getStyleTags(): string;
    getStyleElement(): Array<React.ReactElement<{}>>;
    interleaveWithNodeStream(readableStream: NodeJS.ReadableStream): NodeJS.ReadableStream;
    instance: StyleSheet;
}

export default styled;