/*
 * Controller.js
 *
 * @author realor
 */

import { Formula } from '../formula/Formula.js'

class Controller {
    static classes = {}

    constructor(object, name) {
        this.application = null
        this.object = object
        this.name = name || 'controller'
        this._started = false
        this.autoStart = true
    }

    init(application) {
        this.application = application
        if (this.autoStart) this.start()
    }

    start() {
        if (!this._started) {
            this.onStart()
            this._started = true
        }
    }

    stop() {
        if (this._started) {
            this.onStop()
            this._started = false
        }
    }

    isStarted() {
        return this._started
    }

    onStart() {}

    onStop() {}

    hasChanged(event) {
        return this.updateFormulas() || (event.source !== this && event.objects.includes(this.object))
    }

    updateFormulas() {
        return Formula.update(this.object, 'controllers.' + this.name, true)
    }

    /* static methods */

    static addClass(controllerClass) {
        this.classes[controllerClass.name] = controllerClass
    }

    /* returns an array with the names of the controllers of the given class */
    static getTypesOf(controllerClass) {
        let types = []
        for (let className in this.classes) {
            let cls = this.classes[className]
            if (cls.prototype instanceof controllerClass || cls === controllerClass) {
                types.push(className)
            }
        }
        return types
    }

    static getDescription() {
        return 'controller.' + this.name
    }
}

export { Controller }