/**
 * @author Martin Karkowski
 * @email m.karkowski@zema.de
 * @create date 2020-03-31 18:06:27
 * @modify date 2020-04-09 08:50:52
 * @desc [description]
 */

import { ICallbackData } from '../interfaces/IGraphTool';
import { IBaseNodeOptions } from '../interfaces/IBaseNodeOptions';
import { IBaseEdgeOptions } from '../interfaces/IBaseEdgeOptions';
import { IHotKeyAction } from '../../gui-components-basic-layout/types/interfaces';

export function defaultHotkeys<N extends IBaseNodeOptions, E extends IBaseEdgeOptions>() {

    function selectElements(data: ICallbackData<N, E>) {
        let selected: string[] = data.network.network.getSelectedNodes();

        if (selected.length === 0) {
            const node = data.network.network.getNodeAt(data.component.layout.currentMousePosition);
            selected = node ? [node] : [];
        }

        if (selected.length === 0) {
            const node = data.network.network.getEdgeAt(data.component.layout.currentMousePosition);
            selected = node ? [node] : [];
        }

        return selected;
    }

    const hotkeys: IHotKeyAction<ICallbackData<N, E>>[] = [
        {
            key: 'ShiftLeft',
            onPress(data) {
                if (data.selectedTemplate.type === 'elements' && data.selectedTemplate.nodes.length === 0 && data.selectedTemplate.edges.length === 1) {
                    const addEdgeMode = () => {
                        // _self.network.network.disableEditMode();
                        data.network.network.addEdgeMode();
                        data.network.once('addEdge', () => {
                            if (data.component.layout.pressedKey === data.event.code) {
                                setTimeout(addEdgeMode, 0);
                            }
                        });
                    };

                    addEdgeMode();
                }
            },
            onRelease(data){
                // Disable Edit Mode
                data.network.network.disableEditMode();
            }
        }, 
        {
            key: 'Delete',
            onPress(data) {
                let selected: string[] = selectElements(data);
                data.network.network.deleteSelected(selected);
            }
        },
        {
            key: 'space',
            onPress(data) {
                let selected: string[] = selectElements(data);
                for (const id of selected) {
                    if (typeof data.network.network.clusters[id] === 'function') {
                        data.network.network.clusters[id]();
                    } else {
                        // clusterNode(id);
                        data.network.network.unselectAll();
                    }
                }
            }
        },
        {
            key: 'Esc',
            onPress(data){
                data.network.network.disableEditMode();
            }
        },
        {
            key: 'KeyR',
            onPress(data){
                data.network.network.redraw();
            }
        },
        {
            key: 'KeyE',
            onPress(data){
                data.network.network.enableEditMode();
            }
        },
        {
            key: 'KeyF',
            onPress(data){
                data.network.fit();
            }
        },
        {
            key: '',
            onPress(data){
                // if (this.copyTemplate) {
                //                 const clipboardData: {
                //                     nodes: N[],
                //                     edges: E[]
                //                 } = parse(this.copyTemplate, this.parseFunctions);

                //                 this.paste(clipboardData, _self.network.network.DOMtoCanvas(_self.mousePos), false);

                //             } else {
                //                 this.zemaService.showToast('warning', 'Copy & Paste', 'Failed Pasting');
                //             }
                //             break;
            }
        }
    ]

    return hotkeys;
 }