/**
 * @class BI.Bubble
 * @extends BI.Widget
 */
import { shortcut, Widget, Controller, extend, nextTick, createWidget, each, defer, debounce, delay, isNull, isFunction, contains, bind } from "../../core";

@shortcut()
export default class Bubble extends Widget {
    static xtype = "bi.bubble";

    static EVENT_TRIGGER_CHANGE = "EVENT_TRIGGER_CHANGE";
    static EVENT_CHANGE = "EVENT_CHANGE";
    static EVENT_EXPAND = "EVENT_EXPAND";
    static EVENT_COLLAPSE = "EVENT_COLLAPSE";
    static EVENT_AFTER_INIT = "EVENT_AFTER_INIT";

    static EVENT_BEFORE_POPUPVIEW = "EVENT_BEFORE_POPUPVIEW";
    static EVENT_AFTER_POPUPVIEW = "EVENT_AFTER_POPUPVIEW";
    static EVENT_BEFORE_HIDEVIEW = "EVENT_BEFORE_HIDEVIEW";
    static EVENT_AFTER_HIDEVIEW = "EVENT_AFTER_HIDEVIEW";

    _defaultConfig() {
        const conf = super._defaultConfig(arguments);

        return extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-popper",
            attributes: {
                tabIndex: -1,
            },
            trigger: "click", // click || hover || click-hover || "hover-click" || ""
            toggle: true,
            direction: "",
            placement: "bottom-start", // top-start/top/top-end/bottom-start/bottom/bottom-end/left-start/left/left-end/right-start/right/right-end
            logic: {
                dynamic: true,
            },
            container: null, // popupview放置的容器，默认为this.element
            isDefaultInit: false,
            destroyWhenHide: false,
            hideWhenClickOutside: true,
            showArrow: true,
            hideWhenBlur: false,
            isNeedAdjustHeight: true, // 是否需要高度调整
            isNeedAdjustWidth: true,
            stopEvent: false,
            stopPropagation: false,
            adjustLength: 0, // 调整的距离
            adjustXOffset: 0,
            adjustYOffset: 0,
            hideChecker: BI.emptyFn,
            offsetStyle: "left", // left,right,center
            el: {},
            popup: {},
            comboClass: "bi-combo-popup",
            hoverClass: "bi-combo-hover",
        });
    }

    render() {
        const { hoverClass, logic, isDefaultInit } = this.options;
        this._initCombo();
        // 延迟绑定事件，这样可以将自己绑定的事情优先执行
        nextTick(() => {
            !this.isDestroyed() && this._initPullDownAction();
        });
        this.combo.on(Controller.EVENT_CHANGE, (type, value, obj, ...args) => {
            if (this.isEnabled() && this.isValid()) {
                if (type === BI.Events.EXPAND) {
                    this._popupView();
                }
                if (type === BI.Events.COLLAPSE) {
                    this._hideView();
                }
                if (type === BI.Events.EXPAND) {
                    this.fireEvent(Controller.EVENT_CHANGE, type, value, obj, ...args);
                    this.fireEvent(Bubble.EVENT_EXPAND);
                }
                if (type === BI.Events.COLLAPSE) {
                    this.fireEvent(Controller.EVENT_CHANGE, type, value, obj, ...args);
                    this.isViewVisible() && this.fireEvent(Bubble.EVENT_COLLAPSE);
                }
                if (type === BI.Events.CLICK) {
                    this.fireEvent(Bubble.EVENT_TRIGGER_CHANGE, obj);
                }
            }
        });

        this.element.on("mouseenter." + this.getName(), (e) => {
            if (this.isEnabled() && this.isValid() && this.combo.isEnabled() && this.combo.isValid()) {
                this.element.addClass(hoverClass);
            }
        });
        this.element.on("mouseleave." + this.getName(), (e) => {
            if (this.isEnabled() && this.isValid() && this.combo.isEnabled() && this.combo.isValid()) {
                this.element.removeClass(hoverClass);
            }
        });

        createWidget(extend({
            element: this,
            scrolly: false,
        }, BI.LogicFactory.createLogic("vertical", extend(logic, {
            items: [
                { el: this.combo }
            ],
        }))));
        isDefaultInit && (this._assertPopupView());
    }

    _toggle(e) {
        this._assertPopupViewRender();
        if (this.popupView.isVisible()) {
            this._hideView(e);
        } else {
            if (this.isEnabled()) {
                this._popupView(e);
            }
        }
    }

    _initPullDownAction() {
        const { stopEvent, stopPropagation, toggle } = this.options;
        const evs = (this.options.trigger || "").split(",");

        const st = (e) => {
            if (stopEvent) {
                e.stopEvent();
            }
            if (stopPropagation) {
                e.stopPropagation();
            }
        }

        let enterPopup = false;

        const hide = (e) => {
            if (this.isEnabled() && this.isValid() && this.combo.isEnabled() && this.combo.isValid() && toggle === true) {
                this._hideView(e);
                this.fireEvent(Controller.EVENT_CHANGE, BI.Events.COLLAPSE, "", this.combo);
                this.fireEvent(Bubble.EVENT_COLLAPSE);
            }
            this.popupView && this.popupView.element.off("mouseenter." + this.getName()).off("mouseleave." + this.getName());
            enterPopup = false;
        }

        each(evs, (i, ev) => {
            let debounced;
            switch (ev) {
                case "hover":
                    this.element.on("mouseenter." + this.getName(), (e) => {
                        if (this.isEnabled() && this.isValid() && this.combo.isEnabled() && this.combo.isValid()) {
                            this._popupView(e);
                            this.fireEvent(Controller.EVENT_CHANGE, BI.Events.EXPAND, "", this.combo);
                            this.fireEvent(Bubble.EVENT_EXPAND);
                        }
                    });
                    this.element.on("mouseleave." + this.getName(), (e) => {
                        if (this.popupView) {
                            this.popupView.element.on("mouseenter." + this.getName(), (e) => {
                                enterPopup = true;
                                this.popupView.element.on("mouseleave." + this.getName(), (e) => {
                                    hide(e);
                                });
                                this.popupView.element.off("mouseenter." + this.getName());
                            });
                            defer(() => {
                                if (!enterPopup) {
                                    hide(e);
                                }
                            }, 50);
                        }
                    });
                    break;
                case "click":
                    debounced = debounce((e) => {
                        if (this.combo.element.__isMouseInBounds__(e)) {
                            if (this.isEnabled() && this.isValid() && this.combo.isEnabled() && this.combo.isValid()) {
                                // if (!o.toggle && this.isViewVisible()) {
                                //     return;
                                // }
                                toggle ? this._toggle(e) : this._popupView(e);
                                if (this.isViewVisible()) {
                                    this.fireEvent(Controller.EVENT_CHANGE, BI.Events.EXPAND, "", this.combo);
                                    this.fireEvent(Bubble.EVENT_EXPAND);
                                } else {
                                    this.fireEvent(Controller.EVENT_CHANGE, BI.Events.COLLAPSE, "", this.combo);
                                    this.fireEvent(Bubble.EVENT_COLLAPSE);
                                }
                            }
                        }
                    }, BI.EVENT_RESPONSE_TIME, {
                        "leading": true,
                        "trailing": false,
                    });
                    this.element.off(ev + "." + this.getName()).on(ev + "." + this.getName(), (e) => {
                        debounced(e);
                        st(e);
                    });
                    break;
                case "click-hover":
                    debounced = debounce((e) => {
                        if (this.combo.element.__isMouseInBounds__(e)) {
                            if (this.isEnabled() && this.isValid() && this.combo.isEnabled() && this.combo.isValid()) {
                                // if (this.isViewVisible()) {
                                //     return;
                                // }
                                this._popupView(e);
                                if (this.isViewVisible()) {
                                    this.fireEvent(Controller.EVENT_CHANGE, BI.Events.EXPAND, "", this.combo);
                                    this.fireEvent(Bubble.EVENT_EXPAND);
                                }
                            }
                        }
                    }, BI.EVENT_RESPONSE_TIME, {
                        "leading": true,
                        "trailing": false,
                    });
                    this.element.off("click." + this.getName()).on("click." + this.getName(), (e) => {
                        debounced(e);
                        st(e);
                    });
                    this.element.on("mouseleave." + this.getName(), (e) => {
                        if (this.popupView) {
                            this.popupView.element.on("mouseenter." + this.getName(), (e) => {
                                enterPopup = true;
                                this.popupView.element.on("mouseleave." + this.getName(), (e) => {
                                    hide(e);
                                });
                                this.popupView.element.off("mouseenter." + this.getName());
                            });
                            delay(() => {
                                if (!enterPopup) {
                                    hide(e);
                                }
                            }, 50);
                        }
                    });
                    break;
                case "hover-click":
                    this.element.on("mouseenter." + this.getName(), (e) => {
                        if (this.isEnabled() && this.isValid() && this.combo.isEnabled() && this.combo.isValid()) {
                            this._popupView(e);
                            this.fireEvent(Controller.EVENT_CHANGE, BI.Events.EXPAND, "", this.combo);
                            this.fireEvent(Bubble.EVENT_EXPAND);
                        }
                    });
                    break;
                default:
                    break;
            }
        });
    }

    _initCombo() {
        this.combo = createWidget(this.options.el, {
            value: this.options.value,
        });
    }

    _assertPopupView() {
        const { showArrow, value } = this.options;
        if (isNull(this.popupView)) {
            this.popupView = createWidget(isFunction(this.options.popup) ? this.options.popup() : this.options.popup, {
                type: "bi.bubble_popup_view",
                showArrow,
                value,
            }, this);
            this.popupView.on(Controller.EVENT_CHANGE, (type, value, obj, ...args) => {
                if (type === BI.Events.CLICK) {
                    this.combo.setValue(this.getValue());
                    this.fireEvent(Bubble.EVENT_CHANGE, value, obj);
                }
                this.fireEvent(Controller.EVENT_CHANGE, type, value, obj, ...args);
            });
            this.popupView.setVisible(false);
            nextTick(() => {
                this.fireEvent(Bubble.EVENT_AFTER_INIT);
            });
        }
    }

    _assertPopupViewRender() {
        this._assertPopupView();
        if (!this._rendered) {
            createWidget({
                type: "bi.vertical",
                scrolly: false,
                element: isFunction(this.options.container) ? this.options.container() : (this.options.container || this),
                items: [
                    { el: this.popupView }
                ],
            });
            this._rendered = true;
        }
    }

    _hideIf(e, skipTriggerChecker) {
        // if (this.element.__isMouseInBounds__(e) || (this.popupView && this.popupView.element.__isMouseInBounds__(e))) {
        //     return;
        // }
        // BI-10290 公式combo双击公式内容会收起
        if (e && ((skipTriggerChecker !== true && this.element.find(e.target).length > 0)
            || (this.popupView && this.popupView.element.find(e.target).length > 0)
            || e.target.className === "CodeMirror-cursor" || Widget._renderEngine.createElement(e.target).closest(".CodeMirror-hints").length > 0)) {// BI-9887 CodeMirror的公式弹框需要特殊处理下
            const directions = this.options.direction.split(",");
            if (contains(directions, "innerLeft") || contains(directions, "innerRight")) {
                // popup可以出现在trigger内部的combo，滚动时不需要消失，而是调整位置
                this.adjustWidth();
                this.adjustHeight();
            }

            return;
        }
        const isHide = this.options.hideChecker.apply(this, [e]);
        if (isHide === false) {
            return;
        }
        this._hideView(e);

        return true;
    }

    _hideView(e) {
        const { hideWhenBlur } = this.options;
        this.fireEvent(Bubble.EVENT_BEFORE_HIDEVIEW);
        if (this.options.destroyWhenHide === true) {
            this.popupView && this.popupView.destroy();
            this.popupView = null;
            this._rendered = false;
        } else {
            this.popupView && this.popupView.invisible();
        }

        if (!e || !this.combo.element.__isMouseInBounds__(e)) {
            this.element.removeClass(this.options.hoverClass);
            // 应对bi-focus-shadow在收起时不失焦
            this.element.blur();
        }

        if (this.popper) {
            this.popper.destroy();
            this.popper = null;
        }

        this.element.removeClass(this.options.comboClass);

        Widget._renderEngine.createElement(document).unbind("mousedown." + this.getName()).unbind("mousewheel." + this.getName());
        BI.EVENT_BLUR && hideWhenBlur && Widget._renderEngine.createElement(window).unbind("blur." + this.getName());
        this.fireEvent(Bubble.EVENT_AFTER_HIDEVIEW);
    }

    _popupView(e) {
        const { adjustXOffset, showArrow, adjustYOffset, adjustLength, placement, hideWhenClickOutside, hideWhenBlur } = this.options;
        this._assertPopupViewRender();
        this.fireEvent(Bubble.EVENT_BEFORE_POPUPVIEW);
        // popupVisible是为了获取其宽高, 放到可视范围之外以防止在IE下闪一下
        // this.popupView.css({left: -999999999, top: -99999999});
        this.popupView.visible();
        this.adjustWidth(e);

        if (this.popper) {
            this.popper.destroy();
        }
        const modifiers = [
            {
                name: "offset",
                options: {
                    offset: () => {
                        return [adjustXOffset, (showArrow ? 12 : 0) + (adjustYOffset + adjustLength)];
                    },
                },
            }
        ];
        if (this.options.showArrow) {
            modifiers.push({
                name: "arrow",
                options: {
                    padding: 4,
                    element: this.popupView.arrow.element[0],
                },
            });
        }
        this.popper = BI.Popper.createPopper(this.combo.element[0], this.popupView.element[0], {
            placement,
            strategy: "fixed",
            modifiers,
        });

        // this.adjustHeight(e);

        this.element.addClass(this.options.comboClass);
        hideWhenClickOutside && Widget._renderEngine.createElement(document).unbind("mousedown." + this.getName());
        BI.EVENT_BLUR && hideWhenBlur && Widget._renderEngine.createElement(window).unbind("blur." + this.getName());

        hideWhenClickOutside && Widget._renderEngine.createElement(document).bind("mousedown." + this.getName(), bind(this._hideIf, this));
        BI.EVENT_BLUR && hideWhenBlur && Widget._renderEngine.createElement(window).bind("blur." + this.getName(), bind(this._hideIf, this));
        this.fireEvent(Bubble.EVENT_AFTER_POPUPVIEW);
    }

    adjustWidth(e) {
        const { isNeedAdjustWidth } = this.options;
        if (!this.popupView) {
            return;
        }
        if (isNeedAdjustWidth === true) {
            this.resetListWidth("");
            const width = this.popupView.element.outerWidth();
            let maxW = this.element.outerWidth() || this.options.width;
            // BI-93885 最大列宽算法调整
            if (maxW < 500) {
                if (width >= 500) {
                    maxW = 500;
                } else if (width > maxW) {
                    // 防止小数导致差那么一点
                    maxW = width + 1;
                }
            }

            // if (width > maxW + 80) {
            //     maxW = maxW + 80;
            // } else if (width > maxW) {
            //     maxW = width;
            // }
            this.resetListWidth(maxW < 100 ? 100 : maxW);
        }
    }

    adjustHeight() {

    }

    resetListHeight(h) {
        this._assertPopupView();
        this.popupView.resetHeight && this.popupView.resetHeight(h);
    }

    resetListWidth(w) {
        this._assertPopupView();
        this.popupView.resetWidth && this.popupView.resetWidth(w);
    }

    populate(items) {
        this._assertPopupView();
        this.popupView.populate.apply(this.popupView, arguments);
        this.combo.populate && this.combo.populate.apply(this.combo, arguments);
    }

    _setEnable(arg) {
        super._setEnable(arguments);
        if (arg === true) {
            this.element.removeClass("base-disabled disabled");
        } else if (arg === false) {
            this.element.addClass("base-disabled disabled");
        }
        !arg && this.element.removeClass(this.options.hoverClass);
        !arg && this.isViewVisible() && this._hideView();
    }

    setValue(v) {
        this.combo.setValue(v);
        if (isNull(this.popupView)) {
            this.options.popup.value = v;
        } else {
            this.popupView.setValue(v);
        }
    }

    getValue() {
        if (isNull(this.popupView)) {
            return this.options.popup.value;
        } else {
            return this.popupView.getValue();
        }
    }

    isViewVisible() {
        return this.isEnabled() && this.combo.isEnabled() && !!this.popupView && this.popupView.isVisible();
    }

    showView(e) {
        // 减少popup 调整宽高的次数
        if (this.isEnabled() && this.combo.isEnabled() && !this.isViewVisible()) {
            this._popupView(e);
        }
    }

    hideView(e) {
        this._hideView(e);
    }

    getView() {
        return this.popupView;
    }

    getPopupPosition() {
        return this.position;
    }

    toggle() {
        this._toggle();
    }

    destroyed() {
        Widget._renderEngine.createElement(document)
            .unbind("click." + this.getName())
            .unbind("mousedown." + this.getName())
            .unbind("mouseenter." + this.getName())
            .unbind("mouseleave." + this.getName());
        Widget._renderEngine.createElement(window)
            .unbind("blur." + this.getName());
        this.popper && this.popper.destroy();
        this.popper = null;
        this.popupView && this.popupView._destroy();
    }
}