import { Subscription } from 'rxjs';
import { PickingResult } from '../lookup-grid-options';
import { LookupGridComponent } from '../lookup-grid.component';

export class LookupDialogManager {

    private lookupInit: Subscription = null;
    private _loadDataWhenOpen = true;
    private _navSelectedId = '';
    private _selectFirstInNav = false;

    private keyDownHandler = null;

    constructor(private ins: LookupGridComponent) { }
    // 帮助窗口关闭后做一些清理工作
    dialogClosed() {
        if (this.ins.displayText !== this.ins.originalText && !this.ins.nosearch) {
            this.ins.displayText = this.ins.originalText;
            this.ins.setModelValue(this.ins.displayText);
        }

        if (this.ins.componentRef) {
            this.ins.componentRef.destroy();
            this.ins.componentRef = null;
        }

        if (this.ins.favoritesComponentRef) {
            this.ins.favoritesComponentRef.destroy();
            this.ins.favoritesComponentRef = null;
        }

        if (this.ins.contentContainer) {
            this.ins.contentContainer.clear();
        }

        if (this.ins.centerContainer) {
            this.ins.centerContainer.clear();
        }

        if (this.ins.leftComponentRef) {
            this.ins.leftComponentRef.destroy();
            this.ins.leftComponentRef = null;
        }

        if (this.ins.leftContainer) {
            this.ins.leftContainer.clear();
        }


        this.ins.isShow = false;
        this.ins.isTextChange = false;
        if (this.ins.dialog) {
            this.ins.content = null;
        }

        this.ins.navigationFilter = null;

        this.ins.lookupUtils.pendingEnd();

        if (this.ins.helpId) {
            this.ins.displayType = '';
        }

        if (this.lookupInit) {
            this.lookupInit.unsubscribe();
            this.lookupInit = null;
        }

        // this.ins.items = [];
        this.ins.favoriteItems = [];
        this.ins.isTabChanged = false;

        if (this.ins.uri) {
            this.ins.items = [];
        }
        this.ins._searchState = null;


        this.ins.pageIndex = 1;

        this.ins.loadDataWhenOpen = this._loadDataWhenOpen;
        this.ins.navSelectedIds = this._navSelectedId;
        this.ins.selectFirstInNav = this._selectFirstInNav;

        this.ins.isGetAllChidlNodes = false;

        this.ins.enableGetAllChildNodes = true;

        // 保存个性化数据
        if (this.ins.usePersionalConf && this.ins.favoriteDataFrom !== 'locale') {
            this.ins.httpMgr.submitFavoriteData('dialog closed event.');
        }

        if (this.keyDownHandler) {
            this.keyDownHandler();
            this.keyDownHandler = null;
        }
        if (this.ins.inputGroup) {
            this.ins.inputGroup.focus();
        }

        this.ins.userInitialConfig.reset();

        this.ins.lookupUtils.destroy();
        this.ins.dialogClosed.emit();
    }

    onDialogCreated() {
        this._loadDataWhenOpen = this.ins.loadDataWhenOpen;
        this._navSelectedId = this.ins.navSelectedIds;
        this._selectFirstInNav = this.ins.selectFirstInNav;

        this.ins.dialogCreatedSubscription = this.ins.dialogCreated.subscribe(dlg => {
            if (dlg) {
                if (this.ins.dialogOpenedSubscription) {
                    this.ins.dialogOpenedSubscription.unsubscribe();
                }
                if (this.ins.dialogClosedSubscription) {
                    this.ins.dialogClosedSubscription.unsubscribe();
                }
                this.registerDialogEvent();
                if (this.ins.isRecordSize) {
                    const dlgSize = this.ins.personalConfigService.getDialogSize();
                    if (dlgSize) {
                        const { width, height } = dlgSize;
                        this.ins.dialogWidth = width ? width : this.ins.dialogWidth;
                        this.ins.dialogHeight = height ? height : this.ins.dialogHeight;
                        // 20200908 更新现窗口的尺寸 by Lucas
                        dlg.width = this.ins.dialogWidth;
                        dlg.height = this.ins.dialogHeight;
                    }
                }
                dlg.show();
            }
        });
    }

    canOpenDialog(pr: PickingResult | any) {
        let o = true;
        if (pr === undefined || pr === null || pr === '') {
            o = true;
        }

        if (typeof pr === 'boolean') {
            o = pr;
        }

        if (typeof pr === 'object') {
            if (pr.showDialog === undefined) {
                o = true;
            } else {
                o = pr.showDialog;
            }

            if (pr.hasOwnProperty('data')) {
                /** 保存帮助前传递的数据 */
                this.ins.customData = pr.data;
            }
            this.ins.selectedIds = pr.selectedIds || null;

            if (pr.message) {
                this.ins.notifyService.warning(pr.message);
            }
        }


        this.ins.isReady = false;

        this.ins.isShow = o;
    }

    getHeight() {
        return this.ins.dialog.size.contentHeight -
                this.ins.containerMargin.bottom -
                this.ins.containerMargin.top -
                (this.ins.useFavorite ? 40 : 0);
    }


    private getMainGridSize() {
        if (this.ins.isDoublleList()) {
            return {
                width: this.ins.dialog.size.width - this.ins.leftPanel.width - 27,
                height: this.getHeight()
            };
        }

        return {
            width: this.ins.dialog.size.width - this.ins.containerMargin.left - this.ins.containerMargin.right,
            height: this.getHeight()
        };
    }

    /** 注册弹出窗口的事件 */
    private registerDialogEvent() {
        this.ins.dialogOpenedSubscription = this.ins.dialog.opened.subscribe(() => {
            this.ins.gridOptions = Object.assign(this.ins.gridOptions, this.getMainGridSize());
            this.ins.dialog.el.nativeElement.querySelector('.ps-content').style.height = '100%';

            if (this.ins.displayType && this.ins.customDisplayType) {
                this.ins.componentRef = this.ins.lookupCmpMgr.createContent(this.ins.gridOptions);
                this.ins.lookupCmpMgr.createFavoriteComponent();
            }

            this.ins.initData();

            // 修改帮助窗口的状态
            this.ins.lookupUtils.pendingEnd();
            this.ins.dialogOpened.emit();
        });

        this.ins.subscriptions.push(this.ins.dialogOpenedSubscription);

        this.lookupInit = this.ins.lookupinitializationSubject.subscribe(() => {
            this.ins.loadDataWhenOpen = true;
            // 注册快捷键
            this.registerShortcutKey();
            // 监听左侧尺寸变化事件
            if (this.ins.leftPanel) {
                const leftPanelResize$ = this.ins.leftPanel.resizing.subscribe((s: any) => {
                    this.ins.componentRef.instance.resize({
                        width: this.ins.dialog.size.width - s.size.width - 27,
                        height: this.getHeight()
                    });
                    this.ins.leftComponentRef.instance.resize(s.size);
                });

                this.ins.subscriptions.push(leftPanelResize$);
            }
        });

        this.ins.dialogClosedSubscription = this.ins.dialog.closed.subscribe(() => {
            // 输入框变化后，弹出窗口未选择数据关闭窗口时，还原原始值
            this.ins.dialogMgr.dialogClosed();
        });

        this.ins.subscriptions.push(this.ins.dialogClosedSubscription);
    }

    private registerShortcutKey() {
        // 回车，与确定按钮处理逻辑一至。
        const dlgContainerDom = this.ins.dialog.el.nativeElement.querySelector('.farris-modal');

        if (dlgContainerDom && this.ins.shortcutKey && !this.keyDownHandler) {
            this.keyDownHandler = this.ins.eventManager.addEventListener(dlgContainerDom, 'keydown', (e: KeyboardEvent) => {
                e.stopPropagation();
                const { moveUp, moveDown, searchFocus, confirm, nextPager, prevPager, expand, collapse } = this.ins.shortcutKey;
                const arrowKey = [moveUp, moveDown, expand, collapse];
                if (arrowKey.includes(e.code)) {
                    this.ins.componentRef.instance.onKeydownEvent(e);
                } else if (e.key === confirm) {
                    if (e.target['nodeName'] === 'INPUT' && !e.ctrlKey) {
                        return;
                    }
                    this.ins.okButton.nativeElement.click();
                } else if (e.code === searchFocus) { // 帮助窗口查询输入框焦点
                    e.preventDefault();
                    this.ins.componentRef.instance.inputGroup.focus();
                } else if (!this.ins.isTree() && (e.code === nextPager || e.code === prevPager )) {  // 分页
                    const isNextPager = e.code === nextPager;
                    this.paginationKeyDownHandler(isNextPager);
                }
            });
        }
    }

    private paginationKeyDownHandler(next = true) {
        const datatableRef = this.ins.componentRef.instance;
        const {pageIndex, pageSize, total} = datatableRef;
        const pagerCount = Math.ceil(total / pageSize);

        let newPageNum = pageIndex;
        if (next) {
            newPageNum = newPageNum + 1;
        } else {
            newPageNum = newPageNum - 1;
        }

        if (newPageNum > pagerCount || newPageNum < 1) {
            newPageNum = pageIndex;
        }

        this.ins.componentRef.instance.onPageChange({ pageSize, pageIndex: newPageNum });
    }

}