Stat hotfix (#1748)

* Fixed a bug where a divide by 0 could occur

* Email change now requires a password

API/Controllers/AccountController.cs

@@ -289,7 +289,15 @@ public class AccountController : BaseApiController
         var user = await _unitOfWork.UserRepository.GetUserByUsernameAsync(User.GetUsername());
         if (user == null) return Unauthorized("You do not have permission");
 
-        if (dto == null || string.IsNullOrEmpty(dto.Email)) return BadRequest("Invalid payload");
+        if (dto == null || string.IsNullOrEmpty(dto.Email) || string.IsNullOrEmpty(dto.Password)) return BadRequest("Invalid payload");
+
+
+        // Validate this user's password
+        if (! await _userManager.CheckPasswordAsync(user, dto.Password))
+        {
+            _logger.LogCritical("A user tried to change {UserName}'s email, but password didn't validate", user.UserName);
+            return BadRequest("You do not have permission");
+        }
 
         // Validate no other users exist with this email
         if (user.Email.Equals(dto.Email)) return Ok("Nothing to do");

API/DTOs/Account/UpdateEmailDto.cs

@@ -3,4 +3,5 @@
 public class UpdateEmailDto
 {
     public string Email { get; set; }
+    public string Password { get; set; }
 }

API/Services/Tasks/StatsService.cs

@@ -207,24 +207,28 @@ public class StatsService : IStatsService
     private async Task<float> GetPercentageOfLibrariesWithFolderWatchingEnabled()
     {
         var libraries = (await _unitOfWork.LibraryRepository.GetLibrariesAsync()).ToList();
+        if (libraries.Count == 0) return 0.0f;
         return libraries.Count(l => l.FolderWatching) / (1.0f * libraries.Count);
     }
 
     private async Task<float> GetPercentageOfLibrariesIncludedInRecommended()
     {
         var libraries = (await _unitOfWork.LibraryRepository.GetLibrariesAsync()).ToList();
+        if (libraries.Count == 0) return 0.0f;
         return libraries.Count(l => l.IncludeInRecommended) / (1.0f * libraries.Count);
     }
 
     private async Task<float> GetPercentageOfLibrariesIncludedInDashboard()
     {
         var libraries = (await _unitOfWork.LibraryRepository.GetLibrariesAsync()).ToList();
+        if (libraries.Count == 0) return 0.0f;
         return libraries.Count(l => l.IncludeInDashboard) / (1.0f * libraries.Count);
     }
 
     private async Task<float> GetPercentageOfLibrariesIncludedInSearch()
     {
         var libraries = (await _unitOfWork.LibraryRepository.GetLibrariesAsync()).ToList();
+        if (libraries.Count == 0) return 0.0f;
         return libraries.Count(l => l.IncludeInSearch) / (1.0f * libraries.Count);
     }
 

UI/Web/src/app/_services/account.service.ts

@@ -204,8 +204,8 @@ export class AccountService implements OnDestroy {
     return this.httpClient.post(this.baseUrl + 'account/update', model);
   }
 
-  updateEmail(email: string) {
+  updateEmail(email: string, password: string) {
-    return this.httpClient.post<UpdateEmailResponse>(this.baseUrl + 'account/update/email', {email});
+    return this.httpClient.post<UpdateEmailResponse>(this.baseUrl + 'account/update/email', {email, password});
   }
 
   updateAgeRestriction(ageRating: AgeRating, includeUnknowns: boolean) {

UI/Web/src/app/user-settings/change-email/change-email.component.html

@@ -39,6 +39,17 @@
                         </div>
                     </div>
 
+                    <div class="mb-3">
+                        <label for="password" class="form-label">Current Password</label>
+                        <input class="form-control custom-input" type="password" id="password" formControlName="password"
+                         [class.is-invalid]="form.get('password')?.invalid && form.get('password')?.touched">
+                        <div id="password-validations" class="invalid-feedback" *ngIf="form.dirty || form.touched">
+                            <div *ngIf="form.get('password')?.errors?.required">
+                                This field is required
+                            </div>
+                        </div>
+                    </div>
+
                     <div class="col-auto d-flex d-md-block justify-content-sm-center text-md-end mb-3">
                         <button type="button" class="flex-fill btn btn-secondary me-2" aria-describedby="email-card" (click)="resetForm()">Reset</button>
                         <button type="submit" class="flex-fill btn btn-primary" aria-describedby="email-card" (click)="saveForm()" [disabled]="!form.valid || !(form.dirty || form.touched)">Save</button>

UI/Web/src/app/user-settings/change-email/change-email.component.ts

@@ -34,6 +34,7 @@ export class ChangeEmailComponent implements OnInit, OnDestroy {
     this.accountService.currentUser$.pipe(takeUntil(this.onDestroy), shareReplay(), take(1)).subscribe(user => {
       this.user = user;
       this.form.addControl('email', new FormControl(user?.email, [Validators.required, Validators.email]));
+      this.form.addControl('password', new FormControl('', [Validators.required]));
       this.cdRef.markForCheck();
       this.accountService.isEmailConfirmed().subscribe((confirmed) => {
         this.emailConfirmed = confirmed;
@@ -60,7 +61,7 @@ export class ChangeEmailComponent implements OnInit, OnDestroy {
 
     const model = this.form.value;
     this.errors = [];
-    this.accountService.updateEmail(model.email).subscribe((updateEmailResponse: UpdateEmailResponse) => {
+    this.accountService.updateEmail(model.email, model.password).subscribe((updateEmailResponse: UpdateEmailResponse) => {
       if (updateEmailResponse.emailSent) {
         if (updateEmailResponse.hadNoExistingEmail) {
           this.toastr.success('An email has been sent to ' + model.email + ' for confirmation.');

openapi.json

@@ -7,7 +7,7 @@
       "name": "GPL-3.0",
       "url": "https://github.com/Kareadita/Kavita/blob/develop/LICENSE"
     },
-    "version": "0.6.1.27"
+    "version": "0.6.1.28"
   },
   "servers": [
     {
@@ -13690,6 +13690,10 @@
           "email": {
             "type": "string",
             "nullable": true
+          },
+          "password": {
+            "type": "string",
+            "nullable": true
           }
         },
         "additionalProperties": false