/*!
 * @license
 * Copyright 2016 Alfresco Software, Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { AfterViewInit, Component, ElementRef, Input, OnDestroy, OnInit, ViewChild } from '@angular/core';
import { ActivatedRoute, Router } from '@angular/router';
import { AnalyticsReportListComponent } from 'ng2-activiti-analytics';
import { FormEvent, FormFieldEvent, FormRenderingService, FormService } from 'ng2-activiti-form';
import {
    FilterProcessRepresentationModel,
    ProcessFiltersComponent,
    ProcessInstance,
    ProcessInstanceDetailsComponent,
    ProcessInstanceListComponent,
    StartProcessInstanceComponent
} from 'ng2-activiti-processlist';
import {
    AppsListComponent,
    FilterRepresentationModel,
    TaskDetailsComponent,
    TaskDetailsEvent,
    TaskFiltersComponent,
    TaskListComponent
} from 'ng2-activiti-tasklist';
import { AlfrescoApiService } from 'ng2-alfresco-core';
import {
    DataSorting,
    ObjectDataRow,
    ObjectDataTableAdapter
} from 'ng2-alfresco-datatable';
import { Subscription } from 'rxjs/Rx';
import { /*CustomEditorComponent*/ CustomStencil01 } from './custom-editor/custom-editor.component';

declare var componentHandler;

const currentProcessIdNew = '__NEW__';

@Component({
    selector: 'activiti-demo',
    templateUrl: './activiti-demo.component.html',
    styleUrls: ['./activiti-demo.component.css']
})
export class ActivitiDemoComponent implements AfterViewInit, OnDestroy, OnInit {

    @ViewChild(TaskFiltersComponent)
    activitifilter: TaskFiltersComponent;

    @ViewChild(TaskListComponent)
    taskList: TaskListComponent;

    @ViewChild(ProcessFiltersComponent)
    activitiprocessfilter: ProcessFiltersComponent;

    @ViewChild(ProcessInstanceListComponent)
    processList: ProcessInstanceListComponent;

    @ViewChild(ProcessInstanceDetailsComponent)
    activitiprocessdetails: ProcessInstanceDetailsComponent;

    @ViewChild(TaskDetailsComponent)
    activitidetails: TaskDetailsComponent;

    @ViewChild(StartProcessInstanceComponent)
    activitiStartProcess: StartProcessInstanceComponent;

    @ViewChild(AnalyticsReportListComponent)
    analyticsreportlist: AnalyticsReportListComponent;

    @Input()
    appId: number = null;

    fileShowed: boolean = false;
    selectFirstReport: boolean = false;

    content: Blob;
    contentName: string;

    layoutType: string;
    currentTaskId: string;
    currentProcessInstanceId: string;

    taskSchemaColumns: any [] = [];
    processSchemaColumns: any [] = [];

    activeTab: string = 'tasks'; // tasks|processes|reports

    taskFilter: FilterRepresentationModel;
    report: any;
    processFilter: FilterProcessRepresentationModel;

    sub: Subscription;
    blobFile: any;
    flag: boolean = true;

    dataTasks: ObjectDataTableAdapter;
    dataProcesses: ObjectDataTableAdapter;

    constructor(private elementRef: ElementRef,
                private route: ActivatedRoute,
                private router: Router,
                private apiService: AlfrescoApiService,
                private formRenderingService: FormRenderingService,
                private formService: FormService) {
        this.dataTasks = new ObjectDataTableAdapter();
        this.dataTasks.setSorting(new DataSorting('created', 'desc'));

        this.dataProcesses = new ObjectDataTableAdapter(
            [],
            [
                { type: 'text', key: 'name', title: 'Name', cssClass: 'full-width name-column', sortable: true },
                { type: 'text', key: 'started', title: 'Started', cssClass: 'hidden', sortable: true }
            ]
        );
        this.dataProcesses.setSorting(new DataSorting('started', 'desc'));

        // Uncomment this line to replace all 'text' field editors with custom component
        // formRenderingService.setComponentTypeResolver('text', () => CustomEditorComponent, true);

        // Uncomment this line to map 'custom_stencil_01' to local editor component
        formRenderingService.setComponentTypeResolver('custom_stencil_01', () => CustomStencil01, true);

        formService.formLoaded.subscribe((e: FormEvent) => {
            console.log(`Form loaded: ${e.form.id}`);
        });

        formService.formFieldValueChanged.subscribe((e: FormFieldEvent) => {
            console.log(`Field value changed. Form: ${e.form.id}, Field: ${e.field.id}, Value: ${e.field.value}`);
        });

        formService.formEvents.subscribe((event: Event) => {
            console.log('Event fired:' + event.type);
            console.log('Event Target:' + event.target);
        });

    }

    ngOnInit() {
        this.sub = this.route.params.subscribe(params => {
            let applicationId = params['appId'];
            if (applicationId && applicationId !== '0') {
                this.appId = params['appId'];
            }

            this.taskFilter = null;
            this.currentTaskId = null;
            this.processFilter = null;
            this.currentProcessInstanceId = null;
        });
        this.layoutType = AppsListComponent.LAYOUT_GRID;

    }

    ngOnDestroy() {
        this.sub.unsubscribe();
    }

    onTaskFilterClick(filter: FilterRepresentationModel): void {
        this.applyTaskFilter(filter);
    }

    onReportClick(event: any): void {
        this.report = event;
    }

    onSuccessTaskFilterList(event: any): void {
        this.applyTaskFilter(this.activitifilter.getCurrentFilter());
    }

    applyTaskFilter(filter: FilterRepresentationModel) {
        this.taskFilter = filter;
        if (filter && this.taskList) {
            this.taskList.hasCustomDataSource = false;
        }
    }

    onStartTaskSuccess(event: any): void {
        this.activitifilter.selectFilterWithTask(event.id);
        this.currentTaskId = event.id;
    }

    onSuccessTaskList(event: FilterRepresentationModel) {
        this.currentTaskId = this.taskList.getCurrentId();
    }

    onProcessFilterClick(event: FilterProcessRepresentationModel): void {
        this.currentProcessInstanceId = null;
        this.processFilter = event;
    }

    onSuccessProcessFilterList(): void {
        this.processFilter = this.activitiprocessfilter.getCurrentFilter();
    }

    onSuccessProcessList(event: any): void {
        this.currentProcessInstanceId = this.processList.getCurrentId();
    }

    onTaskRowClick(taskId): void {
        this.currentTaskId = taskId;
    }

    onProcessRowClick(processInstanceId): void {
        this.currentProcessInstanceId = processInstanceId;
    }

    onEditReport(name: string): void {
        this.analyticsreportlist.reload();
    }

    onReportSaved(reportId): void {
        this.analyticsreportlist.reload(reportId);
    }

    onReportDeleted(): void {
        this.analyticsreportlist.reload();
        this.analyticsreportlist.selectReport(null);
    }

    navigateStartProcess(): void {
        this.resetProcessFilters();
        this.reloadProcessFilters();
        this.currentProcessInstanceId = currentProcessIdNew;
    }

    onStartProcessInstance(instance: ProcessInstance): void {
        this.currentProcessInstanceId = instance.id;
        this.activitiStartProcess.reset();
        this.resetProcessFilters();
    }

    isStartProcessMode(): boolean {
        return this.currentProcessInstanceId === currentProcessIdNew;
    }

    processCancelled(data: any): void {
        this.currentProcessInstanceId = null;
        this.processList.reload();
    }

    onSuccessNewProcess(data: any): void {
        this.processList.reload();
    }

    onFormCompleted(form): void {
        this.taskList.reload();
        this.currentTaskId = null;
    }

    onFormContentClick(content: any): void {
        this.fileShowed = true;
        this.content = content.contentBlob;
        this.contentName = content.name;
    }

    onTaskCreated(data: any): void {
        this.currentTaskId = data.parentTaskId;
        this.taskList.reload();
    }

    onTaskDeleted(data: any): void {
        this.taskList.reload();
    }

    ngAfterViewInit() {
        // workaround for MDL issues with dynamic components
        if (componentHandler) {
            componentHandler.upgradeAllRegistered();
        }

        this.loadStencilScriptsInPageFromActiviti();
    }

    loadStencilScriptsInPageFromActiviti() {
        this.apiService.getInstance().activiti.scriptFileApi.getControllers().then(response => {
            if (response) {
                let s = document.createElement('script');
                s.type = 'text/javascript';
                s.text = response;
                this.elementRef.nativeElement.appendChild(s);
            }
        });
    }

    onShowProcessDiagram(event: any): void {
        this.router.navigate(['/activiti/diagram/' + event.value]);
    }

    onProcessDetailsTaskClick(event: TaskDetailsEvent): void {
        event.preventDefault();
        this.activeTab = 'tasks';

        const taskId = event.value.id;
        const processTaskDataRow = new ObjectDataRow({
            id: taskId,
            name: event.value.name || 'No name',
            created: event.value.created
        });
        this.activitifilter.selectFilter(null);
        this.taskList.setCustomDataSource([processTaskDataRow]);
        this.taskList.selectTask(taskId);
        this.currentTaskId = taskId;
    }

    private resetProcessFilters(): void {
        this.processFilter = null;
    }

    private reloadProcessFilters(): void {
        this.activitiprocessfilter.selectFilter(null);
    }

    onRowClick(event): void {
        console.log(event);
    }

    onRowDblClick(event): void {
        console.log(event);
    }

    isTaskCompleted(): boolean {
        return this.activitidetails.isCompletedTask();
    }
}