///
/// Copyright © 2016-2019 The Thingsboard Authors
///
/// 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 { Injectable, NgModule } from '@angular/core';
import { ActivatedRouteSnapshot, Resolve, RouterModule, Routes } from '@angular/router';

import { EntitiesTableComponent } from '../../components/entity/entities-table.component';
import { Authority } from '@shared/models/authority.enum';
import { WidgetsBundlesTableConfigResolver } from '@modules/home/pages/widget/widgets-bundles-table-config.resolver';
import { WidgetLibraryComponent } from '@home/pages/widget/widget-library.component';
import { BreadCrumbConfig, BreadCrumbLabelFunction } from '@shared/components/breadcrumb';
import { Observable } from 'rxjs';
import { WidgetsBundle } from '@shared/models/widgets-bundle.model';
import { WidgetService } from '@core/http/widget.service';
import { WidgetEditorComponent } from '@home/pages/widget/widget-editor.component';
import { map, share } from 'rxjs/operators';
import { toWidgetInfo, WidgetInfo } from '@home/models/widget-component.models';
import { Widget, widgetType, WidgetType } from '@app/shared/models/widget.models';
import { ConfirmOnExitGuard } from '@core/guards/confirm-on-exit.guard';
import { WidgetsData } from '@home/models/dashboard-component.models';
import { NULL_UUID } from '@shared/models/id/has-uuid';

export interface WidgetEditorData {
  widgetType: WidgetType;
  widget: WidgetInfo;
}

@Injectable()
export class WidgetsBundleResolver implements Resolve<WidgetsBundle> {

  constructor(private widgetsService: WidgetService) {
  }

  resolve(route: ActivatedRouteSnapshot): Observable<WidgetsBundle> {
    let widgetsBundleId = route.params.widgetsBundleId;
    if (!widgetsBundleId) {
      widgetsBundleId = route.parent.params.widgetsBundleId;
    }
    return this.widgetsService.getWidgetsBundle(widgetsBundleId);
  }
}

@Injectable()
export class WidgetsTypesDataResolver implements Resolve<WidgetsData> {

  constructor(private widgetsService: WidgetService) {
  }

  resolve(route: ActivatedRouteSnapshot): Observable<WidgetsData> {
    const widgetsBundle: WidgetsBundle = route.parent.data.widgetsBundle;
    const bundleAlias = widgetsBundle.alias;
    const isSystem = widgetsBundle.tenantId.id === NULL_UUID;
    return this.widgetsService.loadBundleLibraryWidgets(bundleAlias,
      isSystem).pipe(
      map((widgets) => {
          return { widgets };
        }
      ));
  }
}

@Injectable()
export class WidgetEditorDataResolver implements Resolve<WidgetEditorData> {

  constructor(private widgetsService: WidgetService) {
  }

  resolve(route: ActivatedRouteSnapshot): Observable<WidgetEditorData> {
    const widgetTypeId = route.params.widgetTypeId;
    return this.widgetsService.getWidgetTypeById(widgetTypeId).pipe(
      map((result) => {
        return {
          widgetType: result,
          widget: toWidgetInfo(result)
        };
      })
    );
  }
}

@Injectable()
export class WidgetEditorAddDataResolver implements Resolve<WidgetEditorData> {

  constructor(private widgetsService: WidgetService) {
  }

  resolve(route: ActivatedRouteSnapshot): Observable<WidgetEditorData> {
    let widgetTypeParam = route.params.widgetType as widgetType;
    if (!widgetTypeParam) {
      widgetTypeParam = widgetType.timeseries;
    }
    return this.widgetsService.getWidgetTemplate(widgetTypeParam).pipe(
      map((widget) => {
        widget.widgetName = null;
        return {
          widgetType: null,
          widget
        };
      })
    );
  }
}

export const widgetTypesBreadcumbLabelFunction: BreadCrumbLabelFunction = ((route, translate) => route.data.widgetsBundle.title);

export const widgetEditorBreadcumbLabelFunction: BreadCrumbLabelFunction =
  ((route, translate, component) => component ? (component as WidgetEditorComponent).widget.widgetName : '');

export const routes: Routes = [
  {
    path: 'widgets-bundles',
    data: {
      breadcrumb: {
        label: 'widgets-bundle.widgets-bundles',
        icon: 'now_widgets'
      }
    },
    children: [
      {
        path: '',
        component: EntitiesTableComponent,
        data: {
          auth: [Authority.SYS_ADMIN, Authority.TENANT_ADMIN],
          title: 'widgets-bundle.widgets-bundles'
        },
        resolve: {
          entitiesTableConfig: WidgetsBundlesTableConfigResolver
        }
      },
      {
        path: ':widgetsBundleId/widgetTypes',
        data: {
          breadcrumb: {
            labelFunction: widgetTypesBreadcumbLabelFunction,
            icon: 'now_widgets'
          } as BreadCrumbConfig
        },
        resolve: {
          widgetsBundle: WidgetsBundleResolver
        },
        children: [
          {
            path: '',
            component: WidgetLibraryComponent,
            data: {
              auth: [Authority.SYS_ADMIN, Authority.TENANT_ADMIN],
              title: 'widget.widget-library'
            },
            resolve: {
              widgetsData: WidgetsTypesDataResolver
            }
          },
          {
            path: ':widgetTypeId',
            component: WidgetEditorComponent,
            canDeactivate: [ConfirmOnExitGuard],
            data: {
              auth: [Authority.SYS_ADMIN, Authority.TENANT_ADMIN],
              title: 'widget.editor',
              breadcrumb: {
                labelFunction: widgetEditorBreadcumbLabelFunction,
                icon: 'insert_chart'
              } as BreadCrumbConfig
            },
            resolve: {
              widgetEditorData: WidgetEditorDataResolver
            }
          },
          {
            path: 'add/:widgetType',
            component: WidgetEditorComponent,
            canDeactivate: [ConfirmOnExitGuard],
            data: {
              auth: [Authority.SYS_ADMIN, Authority.TENANT_ADMIN],
              title: 'widget.editor',
              breadcrumb: {
                labelFunction: widgetEditorBreadcumbLabelFunction,
                icon: 'insert_chart'
              } as BreadCrumbConfig
            },
            resolve: {
              widgetEditorData: WidgetEditorAddDataResolver
            }
          }
        ]
      }
    ]
  }
];

@NgModule({
  imports: [RouterModule.forChild(routes)],
  exports: [RouterModule],
  providers: [
    WidgetsBundlesTableConfigResolver,
    WidgetsBundleResolver,
    WidgetsTypesDataResolver,
    WidgetEditorDataResolver,
    WidgetEditorAddDataResolver
  ]
})
export class WidgetLibraryRoutingModule { }