import { getApp } from "../../olympusapp";
//import { Dialog } from "../../dialog/dialog";
import { UnitData } from "../../interfaces";
//import { ImportFileJSONSchemaValidator } from "../../schemas/schema";
import { UnitDataFile } from "./unitdatafile";

export class UnitDataFileImport extends UnitDataFile {

    protected data!: any;
    //protected dialog: Dialog;
    #fileData!: { [key: string]: UnitData[] };

    constructor(elementId: string) {
        super();
        //this.dialog = new Dialog(elementId);
        //this.dialog.getElement().querySelector(".start-transfer")?.addEventListener("click", (ev: MouseEventInit) => {
        //    this.#doImport();
        //    this.dialog.hide();
        //});
    }

    #doImport() {

        //let selectedCategories: any = {};
        //const unitsManager = getApp().getUnitsManager();
//
        //this.dialog.getElement().querySelectorAll(`input[type="checkbox"][name="category-coalition-selection"]:checked`).forEach(<HTMLInputElement>(checkbox: HTMLInputElement) => {
        //    if (checkbox instanceof HTMLInputElement) {
        //        const [category, coalition] = checkbox.value.split(":");    // e.g. "category:coalition"
        //        selectedCategories[category] = selectedCategories[category] || {};
        //        selectedCategories[category][coalition] = true;
        //    }
        //});
//
        //for (const [groupName, groupData] of Object.entries(this.#fileData)) {
        //    if (groupName === "" || groupData.length === 0 || !this.#unitGroupDataCanBeImported(groupData))
        //        continue;
//
        //    let { category, coalition } = groupData[0];
//
        //    if (!selectedCategories.hasOwnProperty(category)
        //        || !selectedCategories[category].hasOwnProperty(coalition)
        //        || selectedCategories[category][coalition] !== true)
        //        continue;
//
        //    let unitsToSpawn = groupData.filter((unitData: UnitData) => this.#unitDataCanBeImported(unitData)).map((unitData: UnitData) => {
        //        return { unitType: unitData.name, location: unitData.position, liveryID: "", skill: "High" }
        //    });
//
        //    unitsManager.spawnUnits(category, unitsToSpawn, coalition, false);
        //}
    }

    selectFile() {
        var input = document.createElement("input");
        input.type = "file";
        input.addEventListener("change", (e: any) => {
            var file = e.target.files[0];
            if (!file) {
                return;
            }
            var reader = new FileReader();
            reader.onload = (e: any) => {
                
                try {
                    this.#fileData = JSON.parse(e.target.result);

                    //const validator = new ImportFileJSONSchemaValidator();
                    //if (!validator.validate(this.#fileData)) {
                    //    const errors = validator.getErrors().reduce((acc:any, error:any) => {
                    //        let errorString = error.instancePath.substring(1) + ": " + error.message;
                    //        if (error.params) {
                    //            const {allowedValues} = error.params;
                    //            if (allowedValues)
                    //                errorString += ": " + allowedValues.join(', ');
                    //        }
                    //        acc.push(errorString);
                    //        return acc;
                    //    }, [] as string[]);
                    //    this.#showFileDataErrors(errors);
                    //} else {
                    //    this.#showForm();
                    //}                   
                } catch(e:any) {
                    this.#showFileDataErrors([e]);
                }
            };
            reader.readAsText(file);
        })
        input.click();
    }

    #showFileDataErrors( reasons:string[]) {
        
        //this.dialog.getElement().querySelectorAll("[data-on-error]").forEach((el:Element) => {
        //    el.classList.toggle("hide", el.getAttribute("data-on-error") === "hide");
        //});
//
        //const reasonsList = this.dialog.getElement().querySelector(".import-error-reasons");
        //if (reasonsList instanceof HTMLElement)
        //    reasonsList.innerHTML = `<li>${reasons.join("</li><li>")}</li>`;
//
        //this.dialog.show();
    }

    #showForm() {
        //this.dialog.getElement().querySelectorAll("[data-on-error]").forEach((el:Element) => {
        //    el.classList.toggle("hide", el.getAttribute("data-on-error") === "show");
        //});
//
        //const data: any = {};
//
        //for (const [group, units] of Object.entries(this.#fileData)) {
        //    if (group === "" || units.length === 0)
        //        continue;
//
        //    if (units.some((unit: UnitData) => !this.#unitDataCanBeImported(unit)))
        //        continue;
//
        //    const category = units[0].category;
//
        //    if (!data.hasOwnProperty(category)) {
        //        data[category] = {};
        //    }
//
        //    units.forEach((unit: UnitData) => {
        //        if (!data[category].hasOwnProperty(unit.coalition))
        //            data[category][unit.coalition] = [];
//
        //        data[category][unit.coalition].push(unit);
        //    });
//
        //}
//
        //this.data = data;
        //this.buildCategoryCoalitionTable();
        //this.dialog.show();
    }

    #unitDataCanBeImported(unitData: UnitData) {
        return unitData.alive && this.#unitGroupDataCanBeImported([unitData]);
    }

    #unitGroupDataCanBeImported(unitGroupData: UnitData[]) {
        return unitGroupData.every((unitData: UnitData) => {
            return !["Aircraft", "Helicopter"].includes(unitData.category);
        }) && unitGroupData.some((unitData: UnitData) => unitData.alive);
    }

}