import { UIEventSource } from "../../Logic/UIEventSource"
import { Utils } from "../../Utils"
import BaseUIElement from "../BaseUIElement"
import { VariableUiElement } from "../Base/VariableUIElement"
import { SubstitutedTranslation } from "../SubstitutedTranslation"
import TagRenderingConfig from "../../Models/ThemeConfig/TagRenderingConfig"
import Combine from "../Base/Combine"
import Img from "../Base/Img"
import { SpecialVisualizationState } from "../SpecialVisualization"

/***
 * Displays the correct value for a known tagrendering
 */
export default class TagRenderingAnswer extends VariableUiElement {
    constructor(
        tagsSource: UIEventSource<any>,
        configuration: TagRenderingConfig,
        state: SpecialVisualizationState,
        contentClasses: string = "",
        contentStyle: string = "",
        options?: {
            specialViz: Map<string, BaseUIElement>
        }
    ) {
        if (configuration === undefined) {
            throw "Trying to generate a tagRenderingAnswer without configuration..."
        }
        UIEventSource
        if (tagsSource === undefined) {
            throw "Trying to generate a tagRenderingAnswer without tagSource..."
        }
        super(
            tagsSource
                .map((tags) => {
                    if (tags === undefined) {
                        return undefined
                    }

                    if (configuration.condition) {
                        if (!configuration.condition.matchesProperties(tags)) {
                            return undefined
                        }
                    }

                    const trs = Utils.NoNull(configuration.GetRenderValues(tags))
                    if (trs.length === 0) {
                        return undefined
                    }

                    const valuesToRender: BaseUIElement[] = trs.map((tr) => {
                        const text = new SubstitutedTranslation(
                            tr.then,
                            tagsSource,
                            state,
                            options?.specialViz
                        )
                        if (tr.icon === undefined) {
                            return text
                        }
                        return new Combine([
                            new Img(tr.icon).SetClass("mapping-icon-" + (tr.iconClass ?? "small")),
                            text,
                        ]).SetClass("flex items-center")
                    })
                    if (valuesToRender.length === 1) {
                        return valuesToRender[0]
                    } else if (valuesToRender.length > 1) {
                        return new Combine(valuesToRender).SetClass("flex flex-col")
                    }
                    return undefined
                })
                .map((element: BaseUIElement) =>
                    element?.SetClass(contentClasses)?.SetStyle(contentStyle)
                )
        )

        this.SetClass("flex items-center flex-row text-lg link-underline")
        this.SetStyle("word-wrap: anywhere;")
    }
}