/*--------------------------------------------------------------------------------------------------------------
 *  Copyright (c) insite-gmbh. All rights reserved.
 *  Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------------------------*/
//import { * } as _ from '_';
import _ = require('underscore');

export class Rect {

    public right: number;
    public bottom: number;

    public get height(): number {
        return this.bottom - this.top;
    }

    public get width(): number {
        return this.right - this.left;
    }

    constructor(public left: number, public top: number, width: number, height: number) {
        this.right = left + width;
        this.bottom = top + height;
    }

    public offsetRect(offset: any): Rect {

        if (!offset) {
            return this;
        }
        var offsetObject = {
            left: this.isPercent(offset[0]) ? (parseFloat(offset[0]) * this.width) : offset[0],
            top: this.isPercent(offset[1]) ? (parseFloat(offset[1]) * this.height) : offset[1],
            right: this.isPercent(offset[2]) ? (parseFloat(offset[2]) * this.width) : offset[2],
            bottom: this.isPercent(offset[3]) ? (parseFloat(offset[3]) * this.height) : offset[3]
        };
        return new Rect(this.left - offsetObject.left,
            this.top - offsetObject.top, 
            this.width + offsetObject.left + offsetObject.right,
            this.height + offsetObject.top + offsetObject.bottom);
    }

    private isPercent(n: any): boolean {
        return _.isString(n) && n.indexOf('%') > 0;
    }

    public intersectRect(otherRect: Rect): boolean {
        return !(otherRect.left > this.right ||
            otherRect.right < this.left ||
            otherRect.top > this.bottom ||
            otherRect.bottom < this.top);
    }

}