import { EventEmitter } from "@angular/core";
import { InputScheme } from "./input-scheme";
import { InputAction } from "./input-action";
import { InputService } from "../services/input.service";

export interface InputKeyState {
    key: string | number;
    value: number;
    angle?: number;
}

export abstract class InputDevice {

    protected scheme?: InputScheme;
    protected keyStates: InputKeyState[] = [];
    public keyStateChanged = new EventEmitter<InputKeyState>();
    public static KeyEventSafeModeEnabled = false;

    public static get IsKeyEventSafeModeEnabled() {
        if ((window as any).KeyEventSafeModeEnabled === true) {
            return true;
        }
        if ((window as any).KeyEventSafeModeEnabled === false) {
            return false;
        }

        return InputDevice.KeyEventSafeModeEnabled;
    }

    constructor(
        public readonly name: string,
        public readonly type = 'unknown',
    ) {
    }

    public mapKey(action: InputAction, keys: (string | number)[]): this {
        this.scheme?.mapKey(action, keys);
        return this;
    }

    public getScheme(): InputScheme | undefined {
        return this.scheme;
    }

    public hasScheme(): boolean {
        return !!this.scheme;
    }

    public setKey(key: string | number, value: number = 1, angle: number = 0): this {
        let exists = this.keyStates.find(k => k.key === key);
        if (!exists) {
            exists = {
                key,
                value,
                angle,
            };
            this.keyStates.push(exists);
        } else {
            exists.value = value;
            exists.angle = angle;
        }

        this.keyStateChanged.emit(exists);
        this.scheme?.setKeyState(key, value, angle);
        return this;
    }

    public assignScheme(scheme: InputScheme): this {
        this.scheme = scheme;
        return this;
    }
}