import { DS4ItemDataType } from "../item/item-data";
import { DS4Actor } from "./actor";
import { DS4ActorDataType } from "./actor-data";

/**
 * Extend the basic ActorSheet with some very simple modifications
 * @extends {ActorSheet}
 */
export class DS4ActorSheet extends ActorSheet<DS4ActorDataType, DS4Actor, DS4ItemDataType> {
    /**
     * This method returns the data for the template of the actor sheet.
     * It explicitly adds the items of the object sorted by type in the
     * object itemsByType.
     * @returns the data fed to the template of the actor sheet
     */
    getData(): ActorSheetData<DS4ActorDataType, DS4Actor> {
        const data = {
            ...super.getData(),
            // Add the localization config to the data:
            config: CONFIG.DS4,
            // Add the items explicitly sorted by type to the data:
            itemsByType: this.actor.itemTypes,
        };
        console.log("Data:", data);
        return data;
    }

    /** @override */
    static get defaultOptions(): FormApplicationOptions {
        return mergeObject(super.defaultOptions, {
            classes: ["ds4", "sheet", "actor"],
            template: "systems/ds4/templates/actor/actor-sheet.hbs",
            width: 725,
            height: 600,
            tabs: [{ navSelector: ".sheet-tabs", contentSelector: ".sheet-body", initial: "description" }],
        });
    }

    /* -------------------------------------------- */

    /** @override */
    activateListeners(html: JQuery): void {
        super.activateListeners(html);

        // Everything below here is only needed if the sheet is editable
        if (!this.options.editable) return;

        // Add Inventory Item
        html.find(".item-create").on("click", this._onItemCreate.bind(this));

        // Update Inventory Item
        html.find(".item-edit").on("click", (ev) => {
            const li = $(ev.currentTarget).parents(".item");
            const item = this.actor.getOwnedItem(li.data("itemId"));
            item.sheet.render(true);
        });

        // Delete Inventory Item
        html.find(".item-delete").on("click", (ev) => {
            const li = $(ev.currentTarget).parents(".item");
            this.actor.deleteOwnedItem(li.data("itemId"));
            li.slideUp(200, () => this.render(false));
        });

        html.find(".item-change").on("change", this._onItemChange.bind(this));

        // Rollable abilities.
        html.find(".rollable").click(this._onRoll.bind(this));
    }

    /* -------------------------------------------- */

    /**
     * Handle creating a new Owned Item for the actor using initial data defined in the HTML dataset
     * @param {Event} event   The originating click event
     * @private
     */
    private _onItemCreate(event: JQuery.ClickEvent): Promise<Item> {
        event.preventDefault();
        const header = event.currentTarget;
        // Get the type of item to create.
        const type = header.dataset.type;
        // Grab any data associated with this control.
        const data = duplicate(header.dataset);
        // Initialize a default name.
        const name = `New ${type.capitalize()}`;
        // Prepare the item object.
        const itemData = {
            name: name,
            type: type,
            data: data,
        };
        // Remove the type from the dataset since it's in the itemData.type prop.
        delete itemData.data.type;

        // Finally, create the item!
        return this.actor.createOwnedItem(itemData);
    }

    /**
     * Handle changes to properties of an Owned Item from within character sheet.
     * Can currently properly bind: checkboxes, text/number/range input.
     * Assumes the item property is given as the value of the HTML element property 'data-property'.
     * @param {Event} ev    The originating change event
     * @private
     */
    private _onItemChange(ev: JQuery.ChangeEvent<HTMLFormElement>): void {
        ev.preventDefault();
        console.log("Current target:", $(ev.currentTarget).get(0)["name"]);
        const el: HTMLFormElement = $(ev.currentTarget).get(0);
        const id = $(ev.currentTarget).parents(".item").data("itemId");
        const item = duplicate(this.actor.getOwnedItem(id)); // getOwnedItem is typed incorrectly, it actually returns a ItemData<DS4ItemDataType>, not an Item
        const property: string = $(ev.currentTarget).data("property");
        let newValue;

        // Early return:
        // Disabled => do nothing
        if (el.disabled || el.getAttribute("disabled")) return;
        // name not given => raise
        if (property === undefined) {
            throw TypeError("HTML element does not provide 'data-property' attribute");
        }

        // One needs to differentiate between e.g. checkboxes (value="on") and select boxes etc.
        // Checkbox:
        if (el.type === "checkbox") {
            newValue = el.checked; //!getProperty(item, property);
        }

        // Text input:
        else if (el.type === "text") {
            newValue = el.value;
        }

        // Numbers and ranges:
        else if (["number", "range"].includes(el.type)) {
            newValue = el.value.trim();
        }

        // // Radio Checkboxes (untested, cf. FormDataExtended.process)
        // else if (el.type === "radio") {
        //     const chosen: HTMLFormElement = el.find((r: HTMLFormElement) => r["checked"]);
        //     newValue = chosen ? chosen.value : null;
        // }

        // // Multi-Select (untested, cf. FormDataExtended.process)
        // else if (el.type === "select-multiple") {
        //     newValue = [];
        //     el.options.array.forEach((opt: HTMLOptionElement) => {
        //         if (opt.selected) newValue.push(opt.value);
        //     });

        // unsupported:
        else {
            throw TypeError("Binding of item property to this type of HTML element not supported; given: " + el);
        }
        setProperty(item, property, newValue);
        this.actor.updateOwnedItem(item);
    }

    /**
     * Handle clickable rolls.
     * @param {Event} event   The originating click event
     * @private
     */
    private _onRoll(event: JQuery.ClickEvent): void {
        event.preventDefault();
        const element = event.currentTarget;
        const dataset = element.dataset;

        if (dataset.roll) {
            const roll = new Roll(dataset.roll, this.actor.data.data);
            const label = dataset.label ? `Rolling ${dataset.label}` : "";
            roll.roll().toMessage({
                speaker: ChatMessage.getSpeaker({ actor: this.actor }),
                flavor: label,
            });
        }
    }
}