import { shortcut } from "@/core/decorator";
import { extend, isArray, each, map, stripEL } from "@/core/2.base";
import { Layout } from "../../layout";

@shortcut()
export class FlexLeftRightVerticalAdaptLayout extends Layout {
    static xtype = "bi.flex_left_right_vertical_adapt";

    props() {
        return extend(super.props(...arguments), {
            baseCls: "bi-f-lr-v-c",
            columnSize: [],
            items: {},
            llgap: 0,
            lrgap: 0,
            lhgap: 0,
            ltgap: 0,
            lbgap: 0,
            lvgap: 0,
            rlgap: 0,
            rrgap: 0,
            rhgap: 0,
            rtgap: 0,
            rbgap: 0,
            rvgap: 0,
        });
    }

    render() {
        const o = this.options;
        super.render(...arguments);
        const items = this._formatItems(o.items);
        
        return {
            type: "bi.flex_vertical_adapt",
            ref: _ref => {
                this.layout = _ref;
            },
            columnSize: o.columnSize.slice(0, (o.items.left || []).length).concat((o.items.right || []).length > 0 ? [""] : []),
            items,
            scrollx: o.scrollx,
            scrolly: o.scrolly,
            scrollable: o.scrollable,
            innerHgap: o.innerHgap,
            innerVgap: o.innerVgap,
        };
    }

    _formatItems(items) {
        const o = this.options;
        let left, right;
        if (isArray(items)) {
            each(items, (i, item) => {
                if (item.left) {
                    left = item.left;
                }
                if (item.right) {
                    right = item.right;
                }
            });
        }
        let leftItems = left || items.left || [];
        const rightItems = right || items.right || [];
        leftItems = map(leftItems, (i, item) => {
            const json = {
                el: stripEL(item),
            };
            if (o.lvgap + o.ltgap + this._optimiseItemTgap(item) + this._optimiseItemVgap(item) !== 0) {
                json.tgap = o.lvgap + o.ltgap + this._optimiseItemTgap(item) + this._optimiseItemVgap(item);
            }
            if (o.lhgap + o.llgap + this._optimiseItemLgap(item) + this._optimiseItemHgap(item) !== 0) {
                json.lgap = (i === 0 ? o.lhgap : 0) + o.llgap + this._optimiseItemLgap(item) + this._optimiseItemHgap(item);
            }
            if (o.lhgap + o.lrgap + this._optimiseItemRgap(item) + this._optimiseItemHgap(item) !== 0) {
                json.rgap = o.lhgap + o.lrgap + this._optimiseItemRgap(item) + this._optimiseItemHgap(item);
            }
            if (o.lvgap + o.lbgap + this._optimiseItemBgap(item) + this._optimiseItemVgap(item) !== 0) {
                json.bgap = o.lvgap + o.lbgap + this._optimiseItemBgap(item) + this._optimiseItemVgap(item);
            }
            
            return json;
        });
        
        return leftItems.concat({
            el: {
                type: "bi.flex_vertical_adapt",
                columnSize: o.columnSize.slice(leftItems.length),
                css: {
                    "margin-left": "auto",
                },
                hgap: o.rhgap,
                vgap: o.rvgap,
                lgap: o.rlgap,
                rgap: o.rrgap,
                tgap: o.rtgap,
                bgap: o.rbgap,
                items: rightItems,
            },
        });
    }

    resize() {
        this.layout.stroke(this._formatItems(this.options.items));
    }

    addItem() {
        // do nothing
        throw new Error("不能添加子组件");
    }

    populate(items) {
        this.layout.populate(this._formatItems(items));
    }
}