/**
 * ProgressBar.js
 *
 * @author realor
 */

class ProgressBar {
    constructor(element) {
        this.element = element
        this.element.className = 'progress_bar'

        this.messageElem = document.createElement('div')
        this.element.appendChild(this.messageElem)
        this.messageElem.className = 'message'

        this.barElem = document.createElement('div')
        this.element.appendChild(this.barElem)
        this.barElem.className = 'bar'

        this.progressElem = document.createElement('div')
        this.barElem.appendChild(this.progressElem)
        this.progressElem.className = 'progress'

        this.percentElem = document.createElement('div')
        this.barElem.appendChild(this.percentElem)
        this.percentElem.className = 'percent'

        this._progress = undefined
        this._message = null
        this.visible = false
    }

    get visible() {
        return this._visible
    }

    set visible(value) {
        this._visible = value
        this.element.style.display = value ? 'block' : 'none'
    }

    get progress() {
        return this._progress
    }

    set progress(progress) {
        this._progress = progress
        if (progress === undefined) {
            this.progressElem.innerHTML = ''
            this.element.classList.add('undeterminate')
            this.percentElem.style.display = 'none'
        } else {
            progress = Math.round(progress)
            this.element.classList.remove('undeterminate')
            this.progressElem.style.width = progress + '%'
            this.percentElem.style.display = 'block'
            this.percentElem.innerHTML = progress + '%'
        }
    }

    get message() {
        return this._message
    }

    set message(message) {
        this._message = message
        this.messageElem.innerHTML = message ? message : ''
    }
}

export { ProgressBar }