import {UIEventSource} from "../../Logic/UIEventSource";
import EditableTagRendering from "./EditableTagRendering";
import QuestionBox from "./QuestionBox";
import Combine from "../Base/Combine";
import TagRenderingAnswer from "./TagRenderingAnswer";
import ScrollableFullScreen from "../Base/ScrollableFullScreen";
import Constants from "../../Models/Constants";
import SharedTagRenderings from "../../Customizations/SharedTagRenderings";
import BaseUIElement from "../BaseUIElement";
import {VariableUiElement} from "../Base/VariableUIElement";
import DeleteWizard from "./DeleteWizard";
import SplitRoadWizard from "./SplitRoadWizard";
import TagRenderingConfig from "../../Models/ThemeConfig/TagRenderingConfig";
import LayerConfig from "../../Models/ThemeConfig/LayerConfig";
import {Utils} from "../../Utils";
import MoveWizard from "./MoveWizard";
import Toggle from "../Input/Toggle";
import {OsmConnection} from "../../Logic/Osm/OsmConnection";
import {Changes} from "../../Logic/Osm/Changes";
import LayoutConfig from "../../Models/ThemeConfig/LayoutConfig";
import {ElementStorage} from "../../Logic/ElementStorage";
import FilteredLayer from "../../Models/FilteredLayer";
import BaseLayer from "../../Models/BaseLayer";
import Lazy from "../Base/Lazy";

export default class FeatureInfoBox extends ScrollableFullScreen {


    public constructor(
        tags: UIEventSource<any>,
        layerConfig: LayerConfig,
        state: {
            filteredLayers: UIEventSource<FilteredLayer[]>;
            backgroundLayer: UIEventSource<BaseLayer>;
            featureSwitchIsTesting: UIEventSource<boolean>;
            featureSwitchIsDebugging: UIEventSource<boolean>;
            featureSwitchShowAllQuestions: UIEventSource<boolean>;
            osmConnection: OsmConnection,
            featureSwitchUserbadge: UIEventSource<boolean>,
            changes: Changes,
            layoutToUse: LayoutConfig,
            allElements: ElementStorage
        },
        hashToShow?: string,
        isShown?: UIEventSource<boolean>,
    ) {
        if (state === undefined) {
            throw "State is undefined!"
        }
        super(() => FeatureInfoBox.GenerateTitleBar(tags, layerConfig, state),
            () => FeatureInfoBox.GenerateContent(tags, layerConfig, state),
            hashToShow ?? tags.data.id ?? "item",
            isShown);

        if (layerConfig === undefined) {
            throw "Undefined layerconfig";
        }

    }

    private static GenerateTitleBar(tags: UIEventSource<any>,
                                    layerConfig: LayerConfig,
                                    state: {}): BaseUIElement {
        const title = new TagRenderingAnswer(tags, layerConfig.title ?? new TagRenderingConfig("POI"), state)
            .SetClass("break-words font-bold sm:p-0.5 md:p-1 sm:p-1.5 md:p-2");
        const titleIcons = new Combine(
            layerConfig.titleIcons.map(icon => new TagRenderingAnswer(tags, icon, state,
                "block w-8 h-8 max-h-8 align-baseline box-content sm:p-0.5 w-10",)
            ))
            .SetClass("flex flex-row flex-wrap pt-0.5 sm:pt-1 items-center mr-2")

        return new Combine([
            new Combine([title, titleIcons]).SetClass("flex flex-col sm:flex-row flex-grow justify-between")
        ])
    }

    private static GenerateContent(tags: UIEventSource<any>,
                                   layerConfig: LayerConfig,
                                   state: {
                                       filteredLayers: UIEventSource<FilteredLayer[]>;
                                       backgroundLayer: UIEventSource<BaseLayer>;
                                       featureSwitchIsTesting: UIEventSource<boolean>;
                                       featureSwitchIsDebugging: UIEventSource<boolean>;
                                       featureSwitchShowAllQuestions: UIEventSource<boolean>;
                                       osmConnection: OsmConnection,
                                       featureSwitchUserbadge: UIEventSource<boolean>,
                                       changes: Changes,
                                       layoutToUse: LayoutConfig,
                                       allElements: ElementStorage
                                   }): BaseUIElement {
        let questionBoxes: Map<string, QuestionBox> = new Map<string, QuestionBox>();

        const allGroupNames = Utils.Dedup(layerConfig.tagRenderings.map(tr => tr.group))
        if (state?.featureSwitchUserbadge?.data ?? true) {
            const questionSpecs = layerConfig.tagRenderings.filter(tr => tr.id === "questions")
            for (const groupName of allGroupNames) {
                const questions = layerConfig.tagRenderings.filter(tr => tr.group === groupName)
                const questionSpec = questionSpecs.filter(tr => tr.group === groupName)[0]
                const questionBox = new QuestionBox(state, {
                    tagsSource: tags,
                    tagRenderings: questions,
                    units: layerConfig.units,
                    showAllQuestionsAtOnce: questionSpec?.freeform?.helperArgs["showAllQuestions"] ?? state.featureSwitchShowAllQuestions
                });
                questionBoxes.set(groupName, questionBox)
            }
        }

        const allRenderings = []
        for (let i = 0; i < allGroupNames.length; i++) {
            const groupName = allGroupNames[i];

            const trs = layerConfig.tagRenderings.filter(tr => tr.group === groupName)
            const renderingsForGroup: (EditableTagRendering | BaseUIElement)[] = []
            const innerClasses = "block w-full break-word text-default m-1 p-1 border-b border-gray-200 mb-2 pb-2";
            for (const tr of trs) {
                if (tr.question === null || tr.id === "questions") {
                    // This is a question box!
                    const questionBox = questionBoxes.get(tr.group)
                    questionBoxes.delete(tr.group)

                    if (tr.render !== undefined) {
                        questionBox.SetClass("text-sm")
                        const renderedQuestion = new TagRenderingAnswer(tags, tr, state,
                            tr.group + " questions", "", {
                                specialViz: new Map<string, BaseUIElement>([["questions", questionBox]])
                            })
                        const possiblyHidden = new Toggle(
                            renderedQuestion,
                            undefined,
                            questionBox.restingQuestions.map(ls => ls?.length > 0)
                        )
                        renderingsForGroup.push(possiblyHidden)
                    } else {
                        renderingsForGroup.push(questionBox)
                    }

                } else {
                    let classes = innerClasses
                    let isHeader = renderingsForGroup.length === 0 && i > 0
                    if (isHeader) {
                        // This is the first element of a group!
                        // It should act as header and be sticky
                        classes = ""
                    }

                    const etr = new EditableTagRendering(tags, tr, layerConfig.units, state, {
                        innerElementClasses: innerClasses
                    })
                    if (isHeader) {
                        etr.SetClass("sticky top-0")
                    }
                    renderingsForGroup.push(etr)
                }
            }

            allRenderings.push(...renderingsForGroup)
        }
        allRenderings.push(
            new Toggle(
                new Lazy(() => FeatureInfoBox.createEditElements(questionBoxes, layerConfig, tags, state)),
                undefined,
                state.featureSwitchUserbadge
            ))

        return new Combine(allRenderings).SetClass("block")
    }

    /**
     * All the edit elements, together (note that the question boxes are passed though)
     * @param questionBoxes
     * @param layerConfig
     * @param tags
     * @param state
     * @private
     */
    private static createEditElements(questionBoxes: Map<string, QuestionBox>,
                                      layerConfig: LayerConfig,
                                      tags: UIEventSource<any>,
                                      state: { filteredLayers: UIEventSource<FilteredLayer[]>; backgroundLayer: UIEventSource<BaseLayer>; featureSwitchIsTesting: UIEventSource<boolean>; featureSwitchIsDebugging: UIEventSource<boolean>; featureSwitchShowAllQuestions: UIEventSource<boolean>; osmConnection: OsmConnection; featureSwitchUserbadge: UIEventSource<boolean>; changes: Changes; layoutToUse: LayoutConfig; allElements: ElementStorage })
        : BaseUIElement {
        let editElements: BaseUIElement[] = []
        questionBoxes.forEach(questionBox => {
            editElements.push(questionBox);
        })

        if (layerConfig.allowMove) {
            editElements.push(
                new VariableUiElement(tags.map(tags => tags.id).map(id => {
                        const feature = state.allElements.ContainingFeatures.get(id)
                        if (feature === undefined) {
                            return "This feature is not register in the state.allElements and cannot be moved"
                        }
                        return new MoveWizard(
                            feature,
                            state,
                            layerConfig.allowMove
                        );
                    })
                ).SetClass("text-base")
            );
        }

        if (layerConfig.deletion) {
            editElements.push(
                new VariableUiElement(tags.map(tags => tags.id).map(id =>
                    new DeleteWizard(
                        id,
                        state,
                        layerConfig.deletion
                    ))
                ).SetClass("text-base"))
        }

        if (layerConfig.allowSplit) {
            editElements.push(
                new VariableUiElement(tags.map(tags => tags.id).map(id =>
                    new SplitRoadWizard(id, state))
                ).SetClass("text-base"))
        }


        editElements.push(
            new VariableUiElement(
                state.osmConnection.userDetails
                    .map(ud => ud.csCount)
                    .map(csCount => {
                        if (csCount <= Constants.userJourney.historyLinkVisible
                            && state.featureSwitchIsDebugging.data == false
                            && state.featureSwitchIsTesting.data === false) {
                            return undefined
                        }

                        return new TagRenderingAnswer(tags, SharedTagRenderings.SharedTagRendering.get("last_edit"), state);

                    }, [state.featureSwitchIsDebugging, state.featureSwitchIsTesting])
            )
        )


        editElements.push(
            new VariableUiElement(
                state.featureSwitchIsDebugging.map(isDebugging => {
                    if (isDebugging) {
                        const config_all_tags: TagRenderingConfig = new TagRenderingConfig({render: "{all_tags()}"}, "");
                        const config_download: TagRenderingConfig = new TagRenderingConfig({render: "{export_as_geojson()}"}, "");
                        const config_id: TagRenderingConfig = new TagRenderingConfig({render: "{open_in_iD()}"}, "");

                        return new Combine([new TagRenderingAnswer(tags, config_all_tags, state),
                            new TagRenderingAnswer(tags, config_download, state),
                            new TagRenderingAnswer(tags, config_id, state)])
                    }
                })
            )
        )

        return new Combine(editElements).SetClass("flex flex-col")
    }
}