MapComplete/UI/BigComponents/StatisticsPanel.ts

import { VariableUiElement } from "../Base/VariableUIElement"
import Loading from "../Base/Loading"
import Title from "../Base/Title"
import TagRenderingChart from "./TagRenderingChart"
import Combine from "../Base/Combine"
import Locale from "../i18n/Locale"
import { UIEventSource } from "../../Logic/UIEventSource"
import { OsmFeature } from "../../Models/OsmFeature"
import LayerConfig from "../../Models/ThemeConfig/LayerConfig"
import LayoutConfig from "../../Models/ThemeConfig/LayoutConfig"

export default class StatisticsPanel extends VariableUiElement {
    constructor(
        elementsInview: UIEventSource<{ element: OsmFeature; layer: LayerConfig }[]>,
        state: {
            layoutToUse: LayoutConfig
        }
    ) {
        super(
            elementsInview.stabilized(1000).map(
                (features) => {
                    if (features === undefined) {
                        return new Loading("Loading data")
                    }
                    if (features.length === 0) {
                        return "No elements in view"
                    }
                    const els = []
                    for (const layer of state.layoutToUse.layers) {
                        if (layer.name === undefined) {
                            continue
                        }
                        const featuresForLayer = features
                            .filter((f) => f.layer === layer)
                            .map((f) => f.element)
                        if (featuresForLayer.length === 0) {
                            continue
                        }
                        els.push(new Title(layer.name.Clone(), 1).SetClass("mt-8"))

                        const layerStats = []
                        for (const tagRendering of layer?.tagRenderings ?? []) {
                            const chart = new TagRenderingChart(featuresForLayer, tagRendering, {
                                chartclasses: "w-full",
                                chartstyle: "height: 60rem",
                                includeTitle: false,
                            })
                            const title = new Title(
                                tagRendering.question?.Clone() ?? tagRendering.id,
                                4
                            ).SetClass("mt-8")
                            if (!chart.HasClass("hidden")) {
                                layerStats.push(
                                    new Combine([title, chart]).SetClass(
                                        "flex flex-col w-full lg:w-1/3"
                                    )
                                )
                            }
                        }
                        els.push(new Combine(layerStats).SetClass("flex flex-wrap"))
                    }
                    return new Combine(els)
                },
                [Locale.language]
            )
        )
    }
}