import { Directive, EventEmitter, Input, OnInit, Output } from "@angular/core";

import { I18nService } from "jslib-common/abstractions/i18n.service";
import { PasswordGenerationService } from "jslib-common/abstractions/passwordGeneration.service";
import { PlatformUtilsService } from "jslib-common/abstractions/platformUtils.service";

import { PasswordGeneratorPolicyOptions } from "jslib-common/models/domain/passwordGeneratorPolicyOptions";

@Directive()
export class PasswordGeneratorComponent implements OnInit {
  @Input() showSelect: boolean = false;
  @Output() onSelected = new EventEmitter<string>();

  passTypeOptions: any[];
  options: any = {};
  password: string = "-";
  showOptions = false;
  avoidAmbiguous = false;
  enforcedPolicyOptions: PasswordGeneratorPolicyOptions;

  constructor(
    protected passwordGenerationService: PasswordGenerationService,
    protected platformUtilsService: PlatformUtilsService,
    protected i18nService: I18nService,
    private win: Window
  ) {
    this.passTypeOptions = [
      { name: i18nService.t("password"), value: "password" },
      { name: i18nService.t("passphrase"), value: "passphrase" },
    ];
  }

  async ngOnInit() {
    const optionsResponse = await this.passwordGenerationService.getOptions();
    this.options = optionsResponse[0];
    this.enforcedPolicyOptions = optionsResponse[1];
    this.avoidAmbiguous = !this.options.ambiguous;
    this.options.type = this.options.type === "passphrase" ? "passphrase" : "password";
    this.password = await this.passwordGenerationService.generatePassword(this.options);
    await this.passwordGenerationService.addHistory(this.password);
  }

  async sliderChanged() {
    this.saveOptions(false);
    await this.passwordGenerationService.addHistory(this.password);
  }

  async sliderInput() {
    this.normalizeOptions();
    this.password = await this.passwordGenerationService.generatePassword(this.options);
  }

  async saveOptions(regenerate: boolean = true) {
    this.normalizeOptions();
    await this.passwordGenerationService.saveOptions(this.options);

    if (regenerate) {
      await this.regenerate();
    }
  }

  async regenerate() {
    this.password = await this.passwordGenerationService.generatePassword(this.options);
    await this.passwordGenerationService.addHistory(this.password);
  }

  copy() {
    const copyOptions = this.win != null ? { window: this.win } : null;
    this.platformUtilsService.copyToClipboard(this.password, copyOptions);
    this.platformUtilsService.showToast(
      "info",
      null,
      this.i18nService.t("valueCopied", this.i18nService.t("password"))
    );
  }

  select() {
    this.onSelected.emit(this.password);
  }

  toggleOptions() {
    this.showOptions = !this.showOptions;
  }

  private normalizeOptions() {
    // Application level normalize options depedent on class variables
    this.options.ambiguous = !this.avoidAmbiguous;

    if (
      !this.options.uppercase &&
      !this.options.lowercase &&
      !this.options.number &&
      !this.options.special
    ) {
      this.options.lowercase = true;
      if (this.win != null) {
        const lowercase = this.win.document.querySelector("#lowercase") as HTMLInputElement;
        if (lowercase) {
          lowercase.checked = true;
        }
      }
    }

    this.passwordGenerationService.normalizeOptions(this.options, this.enforcedPolicyOptions);
  }
}