import React = require("react");
import { IconProp } from '@fortawesome/fontawesome-svg-core';
import { FontAwesomeIcon } from '@fortawesome/react-fontawesome';
import { observer } from "mobx-react";
import { UndoManager } from "../../util/UndoManager";

export interface RadialMenuProps {
    description: string;
    event: (stuff?: any) => void;
    undoable?: boolean;
    icon: IconProp;
    closeMenu?: () => void;
    min?: number;
    max?: number;
    selected: number;
}


@observer
export class RadialMenuItem extends React.Component<RadialMenuProps> {

    componentDidMount = () => {
        this.setcircle();
    }

    componentDidUpdate = () => {
        this.setcircle();
    }

    handleEvent = async (e: React.PointerEvent) => {
        this.props.closeMenu && this.props.closeMenu();
        let batch: UndoManager.Batch | undefined;
        if (this.props.undoable !== false) {
            batch = UndoManager.StartBatch(`Context menu event: ${this.props.description}`);
        }
        await this.props.event({ x: e.clientX, y: e.clientY });
        batch && batch.end();
    }


    setcircle() {
        let circlemin = 0;
        let circlemax = 1;
        this.props.min ? circlemin = this.props.min : null;
        this.props.max ? circlemax = this.props.max : null;
        if (document.getElementById("myCanvas") !== null) {
            const c: any = document.getElementById("myCanvas");
            let color = "white";
            switch (circlemin % 3) {
                case 1:
                    color = "#c2c2c5";
                    break;
                case 0:
                    color = "#f1efeb";
                    break;
                case 2:
                    color = "lightgray";
                    break;
            }
            if (circlemax % 3 === 1 && circlemin === circlemax - 1) {
                color = "#c2c2c5";
            }

            if (this.props.selected === this.props.min) {
                color = "#808080";

            }
            if (c.getContext) {
                const ctx = c.getContext("2d");
                ctx.beginPath();
                ctx.arc(150, 150, 150, (circlemin / circlemax) * 2 * Math.PI, ((circlemin + 1) / circlemax) * 2 * Math.PI);
                ctx.arc(150, 150, 50, ((circlemin + 1) / circlemax) * 2 * Math.PI, (circlemin / circlemax) * 2 * Math.PI, true);
                ctx.fillStyle = color;
                ctx.fill();
            }
        }
    }

    calculatorx() {
        let circlemin = 0;
        let circlemax = 1;
        this.props.min ? circlemin = this.props.min : null;
        this.props.max ? circlemax = this.props.max : null;
        const avg = ((circlemin / circlemax) + ((circlemin + 1) / circlemax)) / 2;
        const degrees = 360 * avg;
        const x = 100 * Math.cos(degrees * Math.PI / 180);
        const y = -125 * Math.sin(degrees * Math.PI / 180);
        return x;
    }

    calculatory() {

        let circlemin = 0;
        let circlemax = 1;
        this.props.min ? circlemin = this.props.min : null;
        this.props.max ? circlemax = this.props.max : null;
        const avg = ((circlemin / circlemax) + ((circlemin + 1) / circlemax)) / 2;
        const degrees = 360 * avg;
        const x = 125 * Math.cos(degrees * Math.PI / 180);
        const y = -100 * Math.sin(degrees * Math.PI / 180);
        return y;
    }


    render() {
        return (
            <div className={"radialMenu-item" + (this.props.selected ? " radialMenu-itemSelected" : "")} onPointerUp={this.handleEvent}>
                <canvas id="myCanvas" height="300" width="300"> Your browser does not support the HTML5 canvas tag.</canvas>
                <FontAwesomeIcon icon={this.props.icon} size="3x" style={{ position: "absolute", left: this.calculatorx() + 150 - 19, top: this.calculatory() + 150 - 19 }} />
            </div>
        );
    }
}