import {
    shortcut,
    Widget,
    extend,
    createWidget,
    toPix,
    Controller,
    isKey,
    isNull,
    isEmptyArray,
    isEmptyString,
    isArray,
    contains,
    find
} from "@/core";
import { Combo } from "@/base";
import { SingleTreeTrigger } from "./singletree.trigger";
import { SingleTreePopup } from "./singletree.popup";

@shortcut()
export class SingleTreeCombo extends Widget {
    static xtype = "bi.single_tree_combo";

    static EVENT_CHANGE = "EVENT_CHANGE";
    static EVENT_BEFORE_POPUPVIEW = "EVENT_BEFORE_POPUPVIEW";

    _defaultConfig(config) {
        return extend(super._defaultConfig(...arguments), {
            baseCls: `bi-single-tree-combo ${config.simple ? "bi-border-bottom" : "bi-border bi-border-radius"}`,
            trigger: {},
            height: 24,
            text: "",
            items: [],
            value: "",
            allowClear: false,
        });
    }

    _init() {
        const self = this,
            o = this.options;
        super._init(...arguments);

        this.trigger = createWidget(
            extend(
                {
                    type: SingleTreeTrigger.xtype,
                    text: o.text,
                    defaultText: o.defaultText,
                    height: toPix(o.height, 2),
                    items: o.items,
                    value: o.value,
                    allowClear: o.allowClear,
                    warningTitle: o.warningTitle,
                },
                o.trigger
            )
        );

        this.trigger.on(SingleTreeTrigger.EVENT_CLEAR, () => {
            self._clear();
        });

        this.popup = createWidget({
            type: SingleTreePopup.xtype,
            items: o.items,
            value: o.value,
        });

        this.combo = createWidget({
            type: Combo.xtype,
            width: toPix(o.width, 2),
            height: toPix(o.height, 2),
            container: o.container,
            element: this,
            adjustLength: 2,
            el: this.trigger,
            popup: {
                el: this.popup,
            },
        });

        this.combo.on(Controller.EVENT_CHANGE, function () {
            self.fireEvent(Controller.EVENT_CHANGE, arguments);
        });
        this.combo.on(Combo.EVENT_BEFORE_POPUPVIEW, function () {
            self.fireEvent(SingleTreeCombo.EVENT_BEFORE_POPUPVIEW, arguments);
        });

        this.popup.on(SingleTreePopup.EVENT_CHANGE, () => {
            self.setValue(self.popup.getValue());
            self.combo.hideView();
            self.fireEvent(SingleTreeCombo.EVENT_CHANGE);
        });

        if (isKey(o.value)) {
            this._checkError(o.value);
        }
    }

    _checkError(v) {
        if (isNull(v) || isEmptyArray(v) || isEmptyString(v)) {
            this.trigger.options.tipType = "success";
            this.trigger.element.removeClass("error");
            this.element.removeClass("error");
        } else {
            v = isArray(v) ? v : [v];
            const result = find(this.options.items, (idx, item) => contains(v, item.value));
            if (isNull(result)) {
                this.trigger.setTipType("warning");
                this.element.removeClass("error").addClass("error");
                this.trigger.element.removeClass("error").addClass("error");
            } else {
                this.trigger.setTipType("success");
                this.trigger.element.removeClass("error");
                this.element.removeClass("error");
            }
        }
    }

    _clear() {
        this.setValue([]);
    }

    populate(items) {
        this.combo.populate(items);
    }

    setValue(v) {
        v = isArray(v) ? v : [v];
        this.trigger.setValue(v);
        this.popup.setValue(v);
        this._checkError(v);
    }

    getValue() {
        return this.popup.getValue();
    }
}