import { ChangeDetectorRef, Component, NgZone, OnDestroy, OnInit } from "@angular/core";

import { BroadcasterService } from "@/jslib/common/src/abstractions/broadcaster.service";
import { I18nService } from "@/jslib/common/src/abstractions/i18n.service";
import { MessagingService } from "@/jslib/common/src/abstractions/messaging.service";
import { PlatformUtilsService } from "@/jslib/common/src/abstractions/platformUtils.service";

import { StateService } from "../../abstractions/state.service";
import { GroupEntry } from "../../models/groupEntry";
import { SimResult } from "../../models/simResult";
import { UserEntry } from "../../models/userEntry";
import { SyncService } from "../../services/sync.service";
import { ConnectorUtils } from "../../utils";

const BroadcasterSubscriptionId = "DashboardComponent";

@Component({
  selector: "app-dashboard",
  templateUrl: "dashboard.component.html",
})
export class DashboardComponent implements OnInit, OnDestroy {
  simGroups: GroupEntry[];
  simUsers: UserEntry[];
  simEnabledUsers: UserEntry[] = [];
  simDisabledUsers: UserEntry[] = [];
  simDeletedUsers: UserEntry[] = [];
  simPromise: Promise<SimResult>;
  simSinceLast = false;
  syncPromise: Promise<[GroupEntry[], UserEntry[]]>;
  startPromise: Promise<any>;
  lastGroupSync: Date;
  lastUserSync: Date;
  syncRunning: boolean;

  constructor(
    private i18nService: I18nService,
    private syncService: SyncService,
    private broadcasterService: BroadcasterService,
    private ngZone: NgZone,
    private messagingService: MessagingService,
    private platformUtilsService: PlatformUtilsService,
    private changeDetectorRef: ChangeDetectorRef,
    private stateService: StateService
  ) {}

  async ngOnInit() {
    this.broadcasterService.subscribe(BroadcasterSubscriptionId, async (message: any) => {
      this.ngZone.run(async () => {
        switch (message.command) {
          case "dirSyncCompleted":
            this.updateLastSync();
            break;
          default:
            break;
        }

        this.changeDetectorRef.detectChanges();
      });
    });

    this.syncRunning = !!(await this.stateService.getSyncingDir());
    this.updateLastSync();
  }

  async ngOnDestroy() {
    this.broadcasterService.unsubscribe(BroadcasterSubscriptionId);
  }

  async start() {
    this.startPromise = this.syncService.sync(false, false);
    await this.startPromise;
    this.messagingService.send("scheduleNextDirSync");
    this.syncRunning = true;
    this.platformUtilsService.showToast("success", null, this.i18nService.t("syncingStarted"));
  }

  async stop() {
    this.messagingService.send("cancelDirSync");
    this.syncRunning = false;
    this.platformUtilsService.showToast("success", null, this.i18nService.t("syncingStopped"));
  }

  async sync() {
    this.syncPromise = this.syncService.sync(false, false);
    const result = await this.syncPromise;
    const groupCount = result[0] != null ? result[0].length : 0;
    const userCount = result[1] != null ? result[1].length : 0;
    this.platformUtilsService.showToast(
      "success",
      null,
      this.i18nService.t("syncCounts", groupCount.toString(), userCount.toString())
    );
  }

  async simulate() {
    this.simGroups = [];
    this.simUsers = [];
    this.simEnabledUsers = [];
    this.simDisabledUsers = [];
    this.simDeletedUsers = [];

    try {
      this.simPromise = ConnectorUtils.simulate(
        this.syncService,
        this.i18nService,
        this.simSinceLast
      );
      const result = await this.simPromise;
      this.simGroups = result.groups;
      this.simUsers = result.users;
      this.simEnabledUsers = result.enabledUsers;
      this.simDisabledUsers = result.disabledUsers;
      this.simDeletedUsers = result.deletedUsers;
    } catch (e) {
      this.simGroups = null;
      this.simUsers = null;
    }
  }

  private async updateLastSync() {
    this.lastGroupSync = await this.stateService.getLastGroupSync();
    this.lastUserSync = await this.stateService.getLastUserSync();
  }
}