/**
 * This file is part of the jps-like-websites lib
 * URL: https://git.labos.goip.de/chris/jpc-like-websites
 * @copyright by its creator Christian Martin 
 */

/**
 * Simple Dimensions container for the height and width in pixels.
 */
class Dimensions extends DirectionUnitDependentAttribute {
    constructor(defaultValue = 0, defaultUnit = SizeUnits.PIXEL) {
        super();
        this._unit = defaultUnit;
        this._fFirst = defaultValue;
        this._fSecond = defaultValue;
    }

    /**
     * Sets width (x) value of amount
     * @param {number} amount 
     * @returns {Dimensions} this Dimensions Modifier
     */
    width(amount) {
        this._fFirst = amount;
        return this;
    }

    /**
     * Sets height (y) value of amount
     * @param {number} amount 
     * @returns {Dimensions} this Dimensions Modifier
     */
    height(amount) {
        this._fSecond = amount;
        return this;
    }

    /**
     * 
     * @param {number} size 
     * @returns {Dimensions}
     */
    all(size) {
        return this.width(size).height(size);
    }


    getOrderedValues() {
        return this.getOrderedValues().slice(2)
    }

    /**
     * 
     * @returns {Object}
     */
    toModifications() {
        let w = { key: "width", value: this._fFirst + this._unit }
        let h = { key: "height", value: this._fSecond + this._unit }
        let is_w = this._fFirst > 0;
        let is_h = this._fSecond > 0;
        if (is_h && is_w) {
            return [w, h]
        } else if (is_w) {
            return [w]
        } else if (is_h) {
            return [h]
        } else {
            return []
        }
    }

    /**
     * 
     * @returns {TwoDimPoint}
     */
    toTwoDimPoint() {
        return new TwoDimPoint(
            this._fFirst,
            this._fSecond
        );
    }
}


class DimensionsChain extends Dimensions {
    _modifier;
    constructor(modifier) {
        super();
        this._modifier = modifier;
    }

    /**
     * 
     * @returns {Modifier|ChainableModifier}
     */
    toModifier() {
        return this._modifier
            .dimensions(this);
    }

    /**
     * 
     * @returns {Modifier|ChainableModifier}
     */
    ensureModifier() {
        return this.toModifier()
    }

    /**
     * 
     * @returns {Component} the Component that was (supposed to be) modified by this obj.
     */
    toComponent() {
        return this._modifier
            .dimensions(this)
            .toComponent();
    }

    /**
     * 
     * @param {Component|Array<Component>} innerComponent children of the Component under modification.
     * @returns {Component}
     */
    childContext(innerComponent) {
        return this._modifier
            .dimensions(this)
            .toComponent()
            .childContext(innerComponent);
    }
}