import {UIElement} from "../UIElement";
import {TabbedComponent} from "../Base/TabbedComponent";
import {SubtleButton} from "../Base/SubtleButton";
import {UIEventSource} from "../../Logic/UIEventSource";
import {LayoutConfigJson} from "../../Customizations/JSON/LayoutConfigJson";
import Combine from "../Base/Combine";
import {GenerateEmpty} from "./GenerateEmpty";
import LayerPanelWithPreview from "./LayerPanelWithPreview";
import {UserDetails} from "../../Logic/Osm/OsmConnection";
import {MultiInput} from "../Input/MultiInput";
import TagRenderingPanel from "./TagRenderingPanel";
import SingleSetting from "./SingleSetting";
import {VariableUiElement} from "../Base/VariableUIElement";
import AvailableBaseLayers from "../../Logic/Actors/AvailableBaseLayers";
import {DropDown} from "../Input/DropDown";
import TagRenderingConfig from "../../Customizations/JSON/TagRenderingConfig";
import Svg from "../../Svg";

export default class AllLayersPanel extends UIElement {


    private panel: UIElement;
    private readonly _config: UIEventSource<LayoutConfigJson>;
    private readonly languages: UIEventSource<string[]>;
    private readonly userDetails: UserDetails;
    private readonly currentlySelected: UIEventSource<SingleSetting<any>>;

    constructor(config: UIEventSource<LayoutConfigJson>,
                languages: UIEventSource<any>, userDetails: UserDetails) {
        super(undefined);
        this.userDetails = userDetails;
        this._config = config;
        this.languages = languages;

        this.createPanels(userDetails);
        const self = this;
        this.dumbMode = false;
        config.map<number>(config => config.layers.length).addCallback(() => self.createPanels(userDetails));

    }


    private createPanels(userDetails: UserDetails) {
        const self = this;
        const tabs = [];


        const roamingTags = new MultiInput("Add a tagrendering",
            () => GenerateEmpty.createEmptyTagRendering(),
            () => {
                return new TagRenderingPanel(self.languages, self.currentlySelected, self.userDetails)

            }, undefined, {allowMovement: true});
        new SingleSetting(this._config, roamingTags, "roamingRenderings", "Roaming Renderings", "These tagrenderings are shown everywhere");

        
        const backgroundLayers = AvailableBaseLayers.layerOverview.map(baselayer => ({shown: 
            baselayer.name, value: baselayer.id}));
        const dropDown = new DropDown("Choose the default background layer",
            [{value: "osm",shown:"OpenStreetMap <b>(default)</b>"}, ...backgroundLayers])
        new SingleSetting(self._config, dropDown, "defaultBackgroundId", "Default background layer", 
            "Selects the background layer that is used by default. If this layer is not available at the given point, OSM-Carto will be ued");

        const layers = this._config.data.layers;
        for (let i = 0; i < layers.length; i++) {
            tabs.push({
                header: new VariableUiElement(this._config.map((config: LayoutConfigJson) => {
                    const layer = config.layers[i];
                    if (typeof layer !== "string") {
                        try {
                            const iconTagRendering = new TagRenderingConfig(layer.icon, "icon")
                            const icon = iconTagRendering.GetRenderValue({"id": "node/-1"}).txt;
                            return `<img src='${icon}'>`
                        } catch (e) {
                            return Svg.bug_img
                            // Nothing to do here
                        }
                    }
                    return Svg.help_img;
                })),
                content: new LayerPanelWithPreview(this._config, this.languages, i, userDetails)
            });
        }
        tabs.push({
            header: Svg.layersAdd_img,
            content: new Combine([
                    "<h2>Layer editor</h2>",
                    "In this tab page, you can add and edit the layers of the theme. Click the layers above or add a new layer to get started.",
                    new SubtleButton(
                        Svg.layersAdd_ui(),
                        "Add a new layer"
                    ).onClick(() => {
                        self._config.data.layers.push(GenerateEmpty.createEmptyLayer())
                        self._config.ping();
                    }),
                    "<h2>Default background layer</h2>",
                    dropDown,
                    "<h2>TagRenderings for every layer</h2>",
                    "Define tag renderings and questions here that should be shown on every layer of the theme.",
                    roamingTags
                ]
            ),
        })

        this.panel = new TabbedComponent(tabs, new UIEventSource<number>(Math.max(0, layers.length - 1)));
        this.Update();
    }

    InnerRender(): string {
        return this.panel.Render();
    }

}