///
/// Copyright © 2016-2020 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 {
  DateEntityTableColumn,
  EntityActionTableColumn,
  EntityTableColumn,
  EntityTableConfig
} from '@home/models/entity/entities-table-config.models';
import {
  DebugEventType,
  Event,
  EventType,
  EdgeEventType,
  EdgeEventStatus,
  edgeEventStatusColor
} from '@shared/models/event.models';
import {TimePageLink} from '@shared/models/page/page-link';
import {TranslateService} from '@ngx-translate/core';
import {DatePipe} from '@angular/common';
import {MatDialog} from '@angular/material/dialog';
import {EntityId} from '@shared/models/id/entity-id';
import {EventService} from '@app/core/http/event.service';
import {EventTableHeaderComponent} from '@home/components/event/event-table-header.component';
import {EntityType, EntityTypeResource} from '@shared/models/entity-type.models';
import {Observable} from 'rxjs';
import {PageData} from '@shared/models/page/page-data';
import {Direction} from '@shared/models/page/sort-order';
import {DialogService} from '@core/services/dialog.service';
import {ContentType} from '@shared/models/constants';
import {
  EventContentDialogComponent,
  EventContentDialogData
} from '@home/components/event/event-content-dialog.component';
import {sortObjectKeys} from '@core/utils';
import {RuleChainService} from "@core/http/rule-chain.service";
import {AttributeService} from "@core/http/attribute.service";
import {AttributeScope} from "@shared/models/telemetry/telemetry.models";

export class EventTableConfig extends EntityTableConfig<Event, TimePageLink> {

  eventTypeValue: EventType | DebugEventType;

  set eventType(eventType: EventType | DebugEventType) {
    if (this.eventTypeValue !== eventType) {
      this.eventTypeValue = eventType;
      this.updateColumns(true);
    }
  }

  get eventType(): EventType | DebugEventType {
    return this.eventTypeValue;
  }

  eventTypes: Array<EventType | DebugEventType>;
  queueStartTs: number;

  constructor(private eventService: EventService,
              private dialogService: DialogService,
              private translate: TranslateService,
              private ruleChainService: RuleChainService,
              private attributeService: AttributeService,
              private datePipe: DatePipe,
              private dialog: MatDialog,
              public entityId: EntityId,
              public tenantId: string,
              private defaultEventType: EventType | DebugEventType,
              private disabledEventTypes: Array<EventType | DebugEventType> = null,
              private debugEventTypes: Array<DebugEventType> = null) {
    super();
    this.loadDataOnInit = false;
    this.tableTitle = '';
    this.useTimePageLink = true;
    this.detailsPanelEnabled = false;
    this.selectionEnabled = false;
    this.searchEnabled = false;
    this.addEnabled = false;
    this.entitiesDeleteEnabled = false;

    this.headerComponent = EventTableHeaderComponent;

    this.eventTypes = Object.keys(EventType).map(type => EventType[type]);

    if (this.entityId.entityType !== EntityType.EDGE) {
      this.eventTypes.pop();
    }

    if (disabledEventTypes && disabledEventTypes.length) {
      this.eventTypes = this.eventTypes.filter(type => disabledEventTypes.indexOf(type) === -1);
    }

    if (debugEventTypes && debugEventTypes.length) {
      this.eventTypes = [...this.eventTypes, ...debugEventTypes];
    }

    this.eventTypeValue = defaultEventType;

    this.entityTranslations = {
      noEntities: 'event.no-events-prompt'
    };
    this.entityResources = {
    } as EntityTypeResource<Event>;
    this.entitiesFetchFunction = pageLink => this.fetchEvents(pageLink);

    this.defaultSortOrder = {property: 'createdTime', direction: Direction.DESC};

    this.updateColumns();
  }

  fetchEvents(pageLink: TimePageLink): Observable<PageData<Event>> {
    if (this.eventTypeValue === EventType.EDGE_EVENT) {
      this.loadEdgeInfo();
      return this.eventService.getEdgeEvents(this.entityId, pageLink);
    } else {
      return this.eventService.getEvents(this.entityId, this.eventType, this.tenantId, pageLink);
    }
  }

  updateColumns(updateTableColumns: boolean = false): void {
    this.columns = [];
    this.columns.push(
      new DateEntityTableColumn<Event>('createdTime', 'event.event-time', this.datePipe, '120px'),
    );
    if (this.eventType !== EventType.EDGE_EVENT) {
      this.columns.push(
        new EntityTableColumn<Event>('server', 'event.server', '100px',
        (entity) => entity.body.server, entity => ({}), false)
      );
    }
    switch (this.eventType) {
      case EventType.ERROR:
        this.columns.push(
        new EntityTableColumn<Event>('method', 'event.method', '100%',
          (entity) => entity.body.method, entity => ({}), false),
          new EntityActionTableColumn<Event>('error', 'event.error',
            {
              name: this.translate.instant('action.view'),
              icon: 'more_horiz',
              isEnabled: (entity) => entity.body.error && entity.body.error.length > 0,
              onAction: ($event, entity) => this.showContent($event, entity.body.error, 'event.error')
            },
            '100px')
        );
        break;
      case EventType.LC_EVENT:
        this.columns.push(
          new EntityTableColumn<Event>('method', 'event.event', '100%',
            (entity) => entity.body.event, entity => ({}), false),
          new EntityTableColumn<Event>('status', 'event.status', '100%',
            (entity) =>
              this.translate.instant(entity.body.success ? 'event.success' : 'event.failed'), entity => ({}), false),
          new EntityActionTableColumn<Event>('error', 'event.error',
            {
              name: this.translate.instant('action.view'),
              icon: 'more_horiz',
              isEnabled: (entity) => entity.body.error && entity.body.error.length > 0,
              onAction: ($event, entity) => this.showContent($event, entity.body.error, 'event.error')
            },
            '100px')
        );
        break;
      case EventType.STATS:
        this.columns.push(
          new EntityTableColumn<Event>('messagesProcessed', 'event.messages-processed', '50%',
            (entity) => entity.body.messagesProcessed + '',
            () => ({}),
            false,
            () => ({}), () => undefined, true),
          new EntityTableColumn<Event>('errorsOccurred', 'event.errors-occurred', '50%',
            (entity) => entity.body.errorsOccurred + '',
            () => ({}),
            false,
            () => ({}), () => undefined, true)
        );
        break;
      case EventType.EDGE_EVENT:
        this.columns.push(
          new EntityTableColumn<Event>('type', 'event.type', '100%',
            (entity) => entity.type, entity => ({}), false),
          new EntityTableColumn<Event>('action', 'edge.event-action', '100%',
            (entity) => entity.action, entity => ({}), false),
          new EntityTableColumn<Event>('entityId', 'edge.entity-id', '100%',
            (entity) => entity.id.id, entity => ({}), false),   //TODO: replace this to entity.entityId because of conflict wiht entityId model
          new EntityTableColumn<Event>('status', 'event.status', '100%',
            (entity) => this.updateEdgeEventStatus(entity.createdTime),
              entity => ({
                color: this.isPending(entity.createdTime) ? edgeEventStatusColor.get(EdgeEventStatus.PENDING) : edgeEventStatusColor.get(EdgeEventStatus.DEPLOYED)
              }), false),
          new EntityActionTableColumn<Event>('data', 'event.data',
            {
              name: this.translate.instant('action.view'),
              icon: 'more_horiz',
              isEnabled: (entity) => this.checkEdgeEventType(entity),
              onAction: ($event, entity) => this.showEdgeEventContent($event, this.manageEdgeEventContent(entity),
                'event.data')
            },
            '40px'),
      );
        break;
      case DebugEventType.DEBUG_RULE_NODE:
      case DebugEventType.DEBUG_RULE_CHAIN:
        this.columns[0].width = '100px';
        this.columns.push(
          new EntityTableColumn<Event>('type', 'event.type', '40px',
            (entity) => entity.body.type, entity => ({
              padding: '0 12px 0 0',
            }), false, key => ({
              padding: '0 12px 0 0'
            })),
          new EntityTableColumn<Event>('entity', 'event.entity', '100px',
            (entity) => entity.body.entityName, entity => ({
              padding: '0 12px 0 0',
            }), false, key => ({
              padding: '0 12px 0 0'
            })),
          new EntityTableColumn<Event>('msgId', 'event.message-id', '100px',
            (entity) => entity.body.msgId, entity => ({
              whiteSpace: 'nowrap',
              padding: '0 12px 0 0'
            }), false, key => ({
              padding: '0 12px 0 0'
            }),
            entity => entity.body.msgId),
          new EntityTableColumn<Event>('msgType', 'event.message-type', '100px',
            (entity) => entity.body.msgType, entity => ({
              whiteSpace: 'nowrap',
              padding: '0 12px 0 0'
            }), false, key => ({
              padding: '0 12px 0 0'
            }),
            entity => entity.body.msgType),
          new EntityTableColumn<Event>('relationType', 'event.relation-type', '100px',
            (entity) => entity.body.relationType, entity => ({padding: '0 12px 0 0', }), false, key => ({
              padding: '0 12px 0 0'
            })),
          new EntityActionTableColumn<Event>('data', 'event.data',
            {
              name: this.translate.instant('action.view'),
              icon: 'more_horiz',
              isEnabled: (entity) => entity.body.data ? entity.body.data.length > 0 : false,
              onAction: ($event, entity) => this.showContent($event, entity.body.data,
                'event.data', entity.body.dataType)
            },
            '40px'),
          new EntityActionTableColumn<Event>('metadata', 'event.metadata',
            {
              name: this.translate.instant('action.view'),
              icon: 'more_horiz',
              isEnabled: (entity) => entity.body.metadata ? entity.body.metadata.length > 0 : false,
              onAction: ($event, entity) => this.showContent($event, entity.body.metadata,
                'event.metadata', ContentType.JSON, true)
            },
            '40px'),
          new EntityActionTableColumn<Event>('error', 'event.error',
            {
              name: this.translate.instant('action.view'),
              icon: 'more_horiz',
              isEnabled: (entity) => entity.body.error && entity.body.error.length > 0,
              onAction: ($event, entity) => this.showContent($event, entity.body.error,
                'event.error')
            },
            '40px')
        );
        break;
    }
    if (updateTableColumns) {
      this.table.columnsUpdated(true);
    }
  }

  showContent($event: MouseEvent, content: string, title: string, contentType: ContentType = null, sortKeys = false): void {
    if ($event) {
      $event.stopPropagation();
    }
    if (contentType === ContentType.JSON && sortKeys) {
      try {
        content = JSON.stringify(sortObjectKeys(JSON.parse(content)));
      } catch (e) {}
    }
    this.dialog.open<EventContentDialogComponent, EventContentDialogData>(EventContentDialogComponent, {
      disableClose: true,
      panelClass: ['tb-dialog', 'tb-fullscreen-dialog'],
      data: {
        content,
        title,
        contentType
      }
    });
  }

  checkEdgeEventType(entity) {
    return !( entity.type === EdgeEventType.WIDGET_TYPE ||
              entity.type === EdgeEventType.ADMIN_SETTINGS ||
              entity.type === EdgeEventType.WIDGETS_BUNDLE );
  }

  manageEdgeEventContent(entity) {
    var content: string;
    switch (entity.type) {
      case EdgeEventType.RELATION:
        content = entity.body;
        break;
      // case EdgeEventType.RULE_CHAIN_METADATA:
      //   this.ruleChainService.getRuleChainMetadata(entity.entityId, null).pipe(
      //     map(ruleChainMetaData => content = ruleChainMetaData.nodes)
      //   );
      //   break;
      default:
        content = entity;
        break;
    }
    return JSON.stringify(content);
  }

  showEdgeEventContent($event: MouseEvent, content: string, title: string, sortKeys = false): void {
    if ($event) {
      $event.stopPropagation();
    }
    var contentType = ContentType.JSON;
    if (contentType === ContentType.JSON && sortKeys) {
      try {
        content = JSON.stringify(sortObjectKeys(JSON.parse(content)));
      } catch (e) {}
    }
    this.dialog.open<EventContentDialogComponent, EventContentDialogData>(EventContentDialogComponent, {
      disableClose: true,
      panelClass: ['tb-dialog', 'tb-fullscreen-dialog'],
      data: {
        content,
        title,
        contentType
      }
    });
  }

  updateEdgeEventStatus(createdTime) {
    if (this.queueStartTs && createdTime < this.queueStartTs) {
      return this.translate.instant('edge.success');
    } else {
      return this.translate.instant('edge.failed');
    }
  }

  isPending(createdTime) {
    return createdTime > this.queueStartTs;
  }

  loadEdgeInfo() {
    this.attributeService.getEntityAttributes(this.entityId, AttributeScope.SERVER_SCOPE, ['queueStartTs'])
      .subscribe(
        attributes => this.onUpdate(attributes)
      );
  }

  onUpdate(attributes) {
    this.queueStartTs = 0;
    let edge = attributes.reduce(function (map, attribute) {
      map[attribute.key] = attribute;
      return map;
    }, {});
    if (edge.queueStartTs) {
      this.queueStartTs = edge.queueStartTs.lastUpdateTs;
    }
  }


}