import { InputElement } from "./InputElement"
import { UIEventSource } from "../../Logic/UIEventSource"

export default class SimpleDatePicker extends InputElement<string> {
    IsSelected: UIEventSource<boolean> = new UIEventSource<boolean>(false)
    private readonly value: UIEventSource<string>
    private readonly _element: HTMLElement

    constructor(value?: UIEventSource<string>) {
        super()
        this.value = value ?? new UIEventSource<string>(undefined)
        const self = this

        const el = document.createElement("input")
        this._element = el
        el.type = "date"
        el.oninput = () => {
            // Already in YYYY-MM-DD value!
            self.value.setData(el.value)
        }

        this.value.addCallbackAndRunD((v) => {
            el.value = v
        })
    }

    GetValue(): UIEventSource<string> {
        return this.value
    }

    IsValid(t: string): boolean {
        return !isNaN(new Date(t).getTime())
    }

    protected InnerConstructElement(): HTMLElement {
        return this._element
    }
}