/*
 * LoadController.js
 *
 * @author realor
 */

import { Controller } from './Controller.js'
import { IOManager } from '../io/IOManager.js'
import { ObjectUtils } from '../utils/ObjectUtils.js'
import { Formula } from '../formula/Formula.js'

class LoadController extends Controller {
    constructor(object, name) {
        super(object, name)

        this.url = 'https://your_server.com/model.brf'
        this.autoStart = false

        this._url = null // last url loaded
        this._onLoad = this.onLoad.bind(this)
        this._onProgress = this.onProgress.bind(this)
        this._onError = this.onError.bind(this)
    }

    onStart() {
        this.updateFormulas()
        const object = this.object
        if (object.userData.export === undefined) {
            object.userData.export = {}
        }
        object.userData.export.exportChildren = false

        let url = this.url
        if (url.trim().length === 0) return

        if (url[0] === '/') {
            url = document.location.protocol + '//' + document.location.host + url
        }
        if (url !== this._url || this.object.children.length === 0) {
            if (url !== this._url && this.object.children.length > 0) {
                this.clearModel()
            }
            this.loadModel(url)
        }
    }

    onStop() {}

    onLoad(dae) {
        this.application.addObject(dae.scene, this.object)
    }

    onProgress() {}

    onError(error) {
        console.info(error)
    }

    loadModel(url) {
        const application = this.application
        const intent = {
            url: url,
            options: { units: this.application.units },
            onCompleted: object => {
                this._url = url
                object.updateMatrix()
                application.initControllers(object)
                application.addObject(object, this.object)
            },
            onError: error => this.onError(error)
        }

        IOManager.load(intent)
    }

    clearModel() {
        const application = this.application
        ObjectUtils.dispose(this.object)
        this.object.clear()
        application.notifyObjectsChanged(this.object, this, 'structureChanged')
    }
}

Controller.addClass(LoadController)

export { LoadController }