import {UIElement} from "./UIElement";
import {CheckBox} from "./Input/CheckBox";
import Combine from "./Base/Combine";
import {Img} from "./Img";
import {State} from "../State";
import Translations from "./i18n/Translations";
import {FixedUiElement} from "./Base/FixedUiElement";
import {VariableUiElement} from "./Base/VariableUIElement";

export class LayerSelection extends UIElement {

    private readonly _checkboxes: UIElement[];

    constructor() {
        super(undefined);
        this._checkboxes = [];

        for (const layer of State.state.filteredLayers.data) {
            const checkbox = Img.checkmark;
            let icon : UIElement;
            if (layer.layerDef.icon && layer.layerDef.icon !== "") {
                icon = new FixedUiElement(`<img style="height:2em;max-width: 2em;" src="${layer.layerDef.icon}">`);
            }else{
                icon = new FixedUiElement(Img.checkmark);
            }

            let iconUnselected : UIElement;
            if (layer.layerDef.icon && layer.layerDef.icon !== "") {
                iconUnselected = new FixedUiElement(`<img style="height:2em;max-width: 2em;" src="${layer.layerDef.icon}">`);
            }else{
                iconUnselected = new FixedUiElement("");
            }
            iconUnselected.SetStyle("opacity:0.2");
            
            const name = Translations.WT(layer.layerDef.name).Clone()
                .SetStyle("font-size:large;margin-left: 0.5em;");

            
            const zoomStatus = new VariableUiElement(State.state.locationControl.map(location => {
                if(location.zoom < layer.layerDef.minzoom){
                    return Translations.t.general.zoomInToSeeThisLayer
                        .SetClass("alert")
                        .Render();
                }
                return ""
            }))
            this._checkboxes.push(new CheckBox(
                new Combine([icon, name, zoomStatus]),
                new Combine([iconUnselected, "<del>",name,"</del>", zoomStatus]),
                layer.isDisplayed)
                .SetStyle("margin:0.3em;")
            );
        }
    }

    InnerRender(): string {
        return new Combine(this._checkboxes)
            .SetStyle("display:flex;flex-direction:column;")
            .Render();
    }

}