<!--

    Copyright © 2016-2026 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.

-->
<div>
  <mat-card appearance="outlined" class="settings-card">
    <mat-card-header>
      <mat-card-title>
        <span class="mat-headline-5" translate>admin.outgoing-mail-settings</span>
      </mat-card-title>
      <span class="flex-1"></span>
      <div tb-help="outgoingMailSettings"></div>
    </mat-card-header>
    @if (isLoading$ | async) {
      <mat-progress-bar color="warn" mode="indeterminate">
      </mat-progress-bar>
    }
    @if (!(isLoading$ | async)) {
      <div style="height: 4px;"></div>
    }
    <mat-card-content style="padding-top: 16px;">
      <form [formGroup]="mailSettings" (ngSubmit)="save()">
        <fieldset [disabled]="isLoading$ | async">
          <mat-form-field class="mat-block" appearance="outline">
            <mat-label translate>admin.mail-from</mat-label>
            <input matInput formControlName="mailFrom" required/>
            @if (mailSettings.get('mailFrom').hasError('required')) {
              <mat-error>
                {{ 'admin.mail-from-required' | translate }}
              </mat-error>
            }
          </mat-form-field>

          <mat-form-field class="mat-block" appearance="outline">
            <mat-label translate>admin.oauth2.smtp-provider</mat-label>
            <mat-select formControlName="providerId">
              @for (provider of templateProvider; track provider) {
                <mat-option [value]="provider">
                  {{ templates.get(provider)?.name || 'Custom' }}
                </mat-option>
              }
            </mat-select>
          </mat-form-field>

          <mat-expansion-panel class="configuration-panel mat-elevation-z0" [expanded]="mailSettings.get('providerId').value === mailServerOauth2Provider.CUSTOM">
            <mat-expansion-panel-header>
              <mat-panel-title class="flex items-center justify-start" translate>
                admin.connection-settings
              </mat-panel-title>
            </mat-expansion-panel-header>
            <ng-template matExpansionPanelContent>
              <mat-form-field class="mat-block" appearance="outline">
                <mat-label translate>admin.smtp-protocol</mat-label>
                <mat-select formControlName="smtpProtocol">
                  @for (protocol of smtpProtocols; track protocol) {
                    <mat-option [value]="protocol">
                      {{protocol.toUpperCase()}}
                    </mat-option>
                  }
                </mat-select>
              </mat-form-field>
              <div class="gt-sm:flex gt-sm:flex-row gt-sm:gap-2.5">
                <mat-form-field class="mat-block flex-full gt-sm:max-w-60%" appearance="outline">
                  <mat-label translate>admin.smtp-host</mat-label>
                  <input matInput formControlName="smtpHost" placeholder="localhost" required/>
                  @if (mailSettings.get('smtpHost').hasError('required')) {
                    <mat-error>
                      {{ 'admin.smtp-host-required' | translate }}
                    </mat-error>
                  }
                </mat-form-field>
                <mat-form-field class="mat-block flex-full gt-sm:max-w-40%" appearance="outline">
                  <mat-label translate>admin.smtp-port</mat-label>
                  <input matInput #smtpPortInput formControlName="smtpPort" placeholder="25" maxlength="5" required/>
                  <mat-hint align="end">{{smtpPortInput.value?.length || 0}}/5</mat-hint>
                  @if (mailSettings.get('smtpPort').hasError('required')) {
                    <mat-error>
                      {{ 'admin.smtp-port-required' | translate }}
                    </mat-error>
                  }
                  @if (mailSettings.get('smtpPort').hasError('pattern') || mailSettings.get('smtpPort').hasError('maxlength')) {
                    <mat-error>
                      {{ 'admin.smtp-port-invalid' | translate }}
                    </mat-error>
                  }
                </mat-form-field>
              </div>
              <mat-form-field class="mat-block" appearance="outline">
                <mat-label translate>admin.timeout-msec</mat-label>
                <input matInput #timeoutInput formControlName="timeout" placeholder="10000" maxlength="6" required/>
                <mat-hint align="end">{{timeoutInput.value?.length || 0}}/6</mat-hint>
                @if (mailSettings.get('timeout').hasError('required')) {
                  <mat-error>
                    {{ 'admin.timeout-required' | translate }}
                  </mat-error>
                }
                @if (mailSettings.get('timeout').hasError('pattern') || mailSettings.get('timeout').hasError('maxlength')) {
                  <mat-error>
                    {{ 'admin.timeout-invalid' | translate }}
                  </mat-error>
                }
              </mat-form-field>
              <mat-slide-toggle class="flex-1" formControlName="enableTls" style="display: block; padding-bottom: 22px;">
                {{ 'admin.enable-tls' | translate }}
              </mat-slide-toggle>
              @if (mailSettings.get('enableTls').value) {
                <mat-form-field class="mat-block flex-1" appearance="outline">
                  <mat-label translate>admin.tls-version</mat-label>
                  <mat-select formControlName="tlsVersion">
                    @for (tlsVersion of tlsVersions; track tlsVersion) {
                      <mat-option [value]="tlsVersion">
                        {{ tlsVersion }}
                      </mat-option>
                    }
                  </mat-select>
                </mat-form-field>
              }
              <mat-slide-toggle formControlName="enableProxy" style="display: block; padding-bottom: 22px;">
                {{ 'admin.enable-proxy' | translate }}
              </mat-slide-toggle>
              @if (mailSettings.get('enableProxy').value) {
                <div>
                  <div class="gt-sm:flex gt-sm:flex-row gt-sm:gap-2">
                    <mat-form-field class="mat-block flex-full gt-sm:max-w-60%" appearance="outline">
                      <mat-label translate>admin.proxy-host</mat-label>
                      <input matInput required formControlName="proxyHost">
                      @if (mailSettings.get('proxyHost').hasError('required')) {
                        <mat-error>
                          {{ 'admin.proxy-host-required' | translate }}
                        </mat-error>
                      }
                    </mat-form-field>
                    <mat-form-field class="mat-block flex-full gt-sm:max-w-40%" appearance="outline">
                      <mat-label translate>admin.proxy-port</mat-label>
                      <input matInput required formControlName="proxyPort" type="number" step="1" min="1" max="65535">
                      @if (mailSettings.get('proxyPort').hasError('required')) {
                        <mat-error>
                          {{ 'admin.proxy-port-required' | translate }}
                        </mat-error>
                      }
                      @if (mailSettings.get('proxyPort').hasError('pattern')
                        || mailSettings.get('proxyPort').hasError('min')
                        || mailSettings.get('proxyPort').hasError('max')) {
                        <mat-error>
                          {{ 'admin.proxy-port-range' | translate }}
                        </mat-error>
                      }
                    </mat-form-field>
                  </div>
                  <div class="flex flex-row xs:flex-col gt-xs:gap-2">
                    <mat-form-field class="mat-block flex-1" appearance="outline">
                      <mat-label translate>admin.proxy-user</mat-label>
                      <input matInput formControlName="proxyUser">
                    </mat-form-field>
                    <mat-form-field class="mat-block flex-1" appearance="outline">
                      <mat-label translate>admin.proxy-password</mat-label>
                      <input matInput type="password" formControlName="proxyPassword" autocomplete="new-password">
                      <tb-toggle-password matSuffix></tb-toggle-password>
                    </mat-form-field>
                  </div>
                </div>
              }
            </ng-template>
          </mat-expansion-panel>

          <fieldset class="fields-group flex flex-col">
            <legend class="group-title" translate>admin.oauth2.authentication</legend>
            <mat-form-field class="mat-block" appearance="outline">
              <mat-label translate>common.username</mat-label>
              <input matInput formControlName="username" placeholder="{{ 'common.enter-username' | translate }}"
                     autocomplete="new-username"/>
            </mat-form-field>
            <div class="flex items-center justify-between" style="height: 50px; padding-bottom: 20px" [class.!hidden]="mailSettings.get('providerId').value === 'SENDGRID'">
              <tb-toggle-select class="w-52" formControlName="enableOauth2" appearance="fill">
                <tb-toggle-option [value]=false>{{ 'admin.oauth2.basic' | translate }}</tb-toggle-option>
                <tb-toggle-option [value]=true>{{ 'admin.oauth2.oauth2' | translate }}</tb-toggle-option>
              </tb-toggle-select>
              @if (helpLink && mailSettings.get('enableOauth2').value) {
                <div class="details-buttons">
                  <div [tb-help]="helpLink"></div>
                </div>
              }
            </div>
            @if (!mailSettings.get('enableOauth2').value) {
              <section>
                @if (showChangePassword) {
                  <mat-checkbox formControlName="changePassword" style="padding-bottom: 16px;">
                    {{ 'admin.change-password' | translate }}
                  </mat-checkbox>
                }
                @if (mailSettings.get('changePassword').value || !showChangePassword) {
                  <mat-form-field class="mat-block" appearance="outline">
                    <mat-label translate>common.password</mat-label>
                    <input matInput formControlName="password" type="password"
                           placeholder="{{ 'common.enter-password' | translate }}" autocomplete="new-password"/>
                    <tb-toggle-password matSuffix></tb-toggle-password>
                  </mat-form-field>
                }
              </section>
            }
            @if (mailSettings.get('enableOauth2').value) {
              <section>
                <div class="flex flex-row xs:flex-col gt-xs:gap-2">
                  <mat-form-field class="mat-block flex-1" appearance="outline">
                    <mat-label translate>admin.oauth2.client-id</mat-label>
                    <input matInput formControlName="clientId" required>
                    @if (mailSettings.get('clientId').hasError('required')) {
                      <mat-error>
                        {{ 'admin.oauth2.client-id-required' | translate }}
                      </mat-error>
                    }
                    @if (mailSettings.get('clientId').hasError('maxlen gth')) {
                      <mat-error>
                        {{ 'admin.oauth2.client-id-max-length' | translate }}
                      </mat-error>
                    }
                  </mat-form-field>
                  <mat-form-field class="mat-block flex-1" appearance="outline">
                    <mat-label translate>admin.oauth2.client-secret</mat-label>
                    <input matInput formControlName="clientSecret" required>
                    @if (mailSettings.get('clientSecret').hasError('required')) {
                      <mat-error>
                        {{ 'admin.oauth2.client-secret-required' | translate }}
                      </mat-error>
                    }
                    @if (mailSettings.get('clientSecret').hasError('maxlength')) {
                      <mat-error>
                        {{ 'admin.oauth2.client-secret-max-length' | translate }}
                      </mat-error>
                    }
                  </mat-form-field>
                </div>
                @if (mailSettings.get('providerId').value === mailServerOauth2Provider.OFFICE_365) {
                  <mat-form-field class="mat-block flex-1" appearance="outline">
                    <mat-label translate>admin.oauth2.microsoft-tenant-id</mat-label>
                    <input matInput formControlName="providerTenantId" required>
                    @if (mailSettings.get('providerTenantId').hasError('required')) {
                      <mat-error>
                        {{ 'admin.oauth2.microsoft-tenant-id-required' | translate }}
                      </mat-error>
                    }
                  </mat-form-field>
                }
                <mat-expansion-panel class="mat-elevation-z0" [expanded]="mailSettings.get('providerId').value === mailServerOauth2Provider.CUSTOM">
                  <mat-expansion-panel-header>
                    <mat-panel-description class="flex items-stretch justify-end" translate>
                      tenant-profile.advanced-settings
                    </mat-panel-description>
                  </mat-expansion-panel-header>
                  <ng-template matExpansionPanelContent>
                    <div class="flex flex-row xs:flex-col gt-xs:gap-2">
                      <mat-form-field class="mat-block flex-1" appearance="outline">
                        <mat-label translate>admin.oauth2.authorization-uri</mat-label>
                        <input matInput formControlName="authUri" required>
                        <button mat-icon-button matSuffix
                                type="button"
                                (click)="toggleEditMode('authUri')">
                          <mat-icon class="material-icons">create</mat-icon>
                        </button>
                        @if (mailSettings.get('authUri').hasError('required')) {
                          <mat-error>
                            {{ 'admin.oauth2.access-token-uri-required' | translate }}
                          </mat-error>
                        }
                        @if (mailSettings.get('authUri').hasError('pattern')) {
                          <mat-error>
                            {{ 'admin.oauth2.uri-pattern-error' | translate }}
                          </mat-error>
                        }
                      </mat-form-field>
                      <mat-form-field class="mat-block flex-1" appearance="outline">
                        <mat-label translate>admin.oauth2.token-uri</mat-label>
                        <input matInput formControlName="tokenUri" required>
                        <button mat-icon-button matSuffix
                                type="button"
                                (click)="toggleEditMode('tokenUri')">
                          <mat-icon class="material-icons">create</mat-icon>
                        </button>
                        @if (mailSettings.get('tokenUri').hasError('required')) {
                          <mat-error>
                            {{ 'admin.oauth2.access-token-uri-required' | translate }}
                          </mat-error>
                        }
                        @if (mailSettings.get('tokenUri').hasError('pattern')) {
                          <mat-error>
                            {{ 'admin.oauth2.uri-pattern-error' | translate }}
                          </mat-error>
                        }
                      </mat-form-field>
                    </div>
                    <tb-string-items-list
                      appearance="outline"
                      formControlName="scope" required
                      label="{{ 'admin.oauth2.scope' | translate }}"
                      requiredText="{{ 'admin.oauth2.scope-required' | translate }}">
                    </tb-string-items-list>
                  </ng-template>
                </mat-expansion-panel>
                <fieldset class="fields-group flex flex-col">
                  <legend class="group-title" translate>admin.oauth2.redirect-uri</legend>
                  <div class="flex flex-1 flex-row gap-2 xs:flex-col">
                    <div class="flex flex-col sm:max-w-60% sm:flex-full gt-sm:max-w-50% gt-sm:flex-full" [formGroup]="domainForm">
                      <div class="flex flex-row gap-2 xs:flex-col md:flex-col md:gap-0">
                        <mat-form-field class="mat-block max-w-30% flex-full xs:max-w-full xs:flex-1 md:max-w-full md:flex-1" appearance="outline">
                          <mat-label translate>admin.oauth2.protocol</mat-label>
                          <mat-select formControlName="scheme">
                            @for (protocol of protocols; track protocol) {
                              <mat-option [value]="protocol">
                                {{ domainSchemaTranslations.get(protocol) | translate | uppercase }}
                              </mat-option>
                            }
                          </mat-select>
                        </mat-form-field>
                        <mat-form-field class="mat-block flex-1" appearance="outline">
                          <mat-label translate>admin.domain-name</mat-label>
                          <input matInput formControlName="name" required>
                          @if (domainForm.get('name').hasError('pattern')) {
                            <mat-error>
                              {{ 'admin.error-verification-url' | translate }}
                            </mat-error>
                          }
                          @if (domainForm.get('name').hasError('maxlength')) {
                            <mat-error>
                              {{ 'admin.domain-name-max-length' | translate }}
                            </mat-error>
                          }
                        </mat-form-field>
                      </div>
                      @if (domainForm.hasError('unique')) {
                        <mat-error>
                          {{ 'admin.domain-name-unique' | translate }}
                        </mat-error>
                      }
                    </div>
                    <div class="flex flex-1 flex-col gt-xs:w-0">
                      <mat-form-field class="mat-block flex-1" appearance="outline">
                        <mat-label translate>admin.oauth2.redirect-uri-template</mat-label>
                        <input matInput formControlName="redirectUri" readonly>
                        <tb-copy-button
                          matSuffix
                          color="primary"
                          [copyText]="mailSettings.get('redirectUri').value"
                          tooltipText="{{ 'admin.oauth2.copy-redirect-uri' | translate }}"
                          tooltipPosition="above"
                          icon="mdi:clipboard-arrow-left">
                        </tb-copy-button>
                      </mat-form-field>
                    </div>
                  </div>
                </fieldset>
              </section>
            }
            @if (mailSettings.get('enableOauth2').value) {
              <section class="flex flex-row pb-3 xs:flex-col gt-xs:items-center gt-xs:justify-between"
                       >
                <div>
                  <span class="token-status" translate>admin.oauth2.access-token-status</span>
                  <span>
                    {{ accessTokenStatus }}
                  </span>
                </div>
                <button mat-raised-button type="button" color="primary"
                        [disabled]="(isLoading$ | async) || mailSettings.invalid || domainForm.invalid || (mailSettings.dirty || domainForm.dirty)"
                        (click)="generateAccessToken()">
                  {{ accessTokenButtonName }}
                </button>
              </section>
            }
          </fieldset>
          <div class="flex flex-row items-center justify-end gap-4 xs:flex-col xs:items-stretch">
            <button mat-raised-button type="button"
                    [disabled]="(isLoading$ | async) || mailSettings.get('enableOauth2').value ? mailSettings.invalid || domainForm.invalid || (mailSettings.dirty || domainForm.dirty) : mailSettings.invalid"
                    (click)="sendTestMail()">
              {{'admin.send-test-mail' | translate}}
            </button>
            <button mat-raised-button color="primary"
                    [disabled]="(isLoading$ | async) || mailSettings.invalid || domainForm.invalid || (!mailSettings.dirty && !domainForm.dirty)"
                    type="submit">{{'action.save' | translate}}
            </button>
          </div>
        </fieldset>
      </form>
    </mat-card-content>
  </mat-card>
</div>
