import { MwCLIPBOARD, MwCOORDINATE } from "./enums";
import { MwPoint, MwRect } from "./structs";

export type MwClass = object & { __brand: "MwClass" };

/**
 * `BaseWidget` represents the lowest level form of widgets before the native layer.
 * This class contains the native methods shared by all widgets.
 */
export interface BaseWidget {
    area: MwRect;
    isPending: boolean;
    parent: BaseWidget;
    children: BaseWidget[];
    name: string;
    cursorCoord: MwPoint;
    screenSize: MwRect;
    coordinateType: MwCOORDINATE;
    nativeClass: MwClass;

    /**
     * Sets new position and size to this widget
     * @param area New rect
     */
    setArea(area: MwRect): this;

    /**
     * Moves this widget to an absolute position
     * @param x X position
     * @param y Y position
     */
    move(x: number, y: number): this;

    /**
     * Changes the size dimension of this widget
     * @param width New width
     * @param height New height
     */
    resize(width: number, height: number): this;

    /**
     * Runs a single step through the event loop
     * @returns Wether the step was successful
     */
    step(): boolean;

    /**
     * Start the main loop on this widget
     */
    loop(): this;

    /**
     * Show/hide this widget
     * @param toggle Wether the widget is shown
     */
    show(toggle: boolean): this;

    /**
     * Hides the cursor when being hovered over this widget
     */
    hideCursor(): this;

    /**
     * Grabs the pointer and pins it to the center of this widget
     * @param toggle Wether the pointer is grabbed
     */
    grabPointer(toggle: boolean): this;

    /**
     * Focus this widget
     */
    focus(): this;

    /**
     * Adds this widget to the tick handler list
     */
    addTickList(): this;

    /**
     * Forces this widget to render
     */
    forceRender(): this;

    /**
     * Reparents this widget to a new parent
     * @param widget New parent
     */
    reparent(widget: BaseWidget): this;

    /**
     * Adds another widget as child of this one
     * @param widgets Widgets to add
     */
    addChild(...widgets: BaseWidget[]): this;

    /**
     * Destroys this widget
     */
    destroy(): null;

    /**
     * Queues this widget to get clipboard content.
     * This is ignored in backends that aren't or X11/Wayland.
     * @param type Clipboard type to get, if you are unsure just use `MwCLIPBOARD_MAIN`
     */
    getClipboard(type: MwCLIPBOARD): undefined;

    /**
     * Sets a value to an integer property by its key
     * @param key Prefixed property key
     * @param value Value to assign to property
     */
    setInteger(key: string, value: number): this;

    /**
     * Sets a value to a string property by its key
     * @param key Prefixed property key
     * @param value Value to assign to property
     */
    setString(key: string, value: string): this;

    /**
     * Sets the value of a void* property by its key.
     * You most likely shouldn't use this unless you are extending BaseWidget
     * @param key Prefixed property key
     */
    setVoid(key: string, value: unknown): this;

    /**
     * Gets the value of an integer property by its key
     * @param key Prefixed property key
     */
    getInteger(key: string): number;

    /**
     * Gets the value of a string property by its key
     * @param key Prefixed property key
     */
    getString(key: string): string;

    /**
     * Gets the value of a void* property by its key.
     * You most likely shouldn't use this unless you are extending BaseWidget
     * @param key Prefixed property key
     */
    getVoid(key: string): unknown;
}

export interface BaseWidgetConstructor {
    new (cls: MwClass | null, options: WidgetOptions): BaseWidget;
}

export interface MwNativeClasses {
    Box: MwClass;
    Button: MwClass;
    Calendar: MwClass;
    CheckBox: MwClass;
    Entry: MwClass;
    Frame: MwClass;
    Image: MwClass;
    Label: MwClass;
    ListBox: MwClass;
    Menu: MwClass;
    NumberEntry: MwClass;
    ScrollBar: MwClass;
    SubMenu: MwClass;
    SubWindow: MwClass;
    Tab: MwClass;
    Viewport: MwClass;
    Window: MwClass;
    ProgressBar: MwClass;
    RadioBox: MwClass;
    ComboBox: MwClass;
    TreeView: MwClass;
}

export interface Pixmap {
    size: MwRect;

    /**
     * Get the raw data of this pixmap
     */
    getRaw(): Buffer;

    /**
     * Updates this pixmap using raw data
     * @param data Image data to update
     */
    reloadRaw(data: Buffer | ArrayBuffer): void;
}

export interface PixmapOptions {
    data?: Buffer;
    width?: number;
    height?: number;
}

export interface PixmapConstructor {
    new (widget: BaseWidget, options?: PixmapOptions): Pixmap;
}

export interface WidgetOptions {
    name?: string;
    parent?: BaseWidget;
    x?: number;
    y?: number;
    width?: number;
    height?: number;
}