Account Deletion

Implements GDPR, App Store, and Play Store compliant account deletion with proper confirmation flows, backend data cleanup, and secure sign-out. Required by both Apple App Store and Google Play Store guidelines for apps with account creation.

When to Use This Skill

• Adding account deletion to settings screen
• App Store or Play Store review requires account deletion
• Implementing GDPR "right to erasure"
• User asks "add delete account", "remove account option"
• Settings feature needs user data deletion

When NOT to Use This Skill

• User just wants to sign out - Use /auth signOut method
• Deleting app data only (no account) - Manual implementation
• Admin user deletion - Custom admin feature

Questions to Ask

1. Backend type: Supabase, Firebase, or Custom API?
2. Confirmation method: Password re-entry, typed confirmation, or simple dialog?
3. Grace period: Immediate deletion or scheduled (e.g., 30 days)?
4. Data cleanup: What user data needs deletion? (storage, analytics, etc.)

Quick Reference

App Store & Play Store Requirements

Requirement	Implementation
Easy to find	Settings > Account > Delete Account
Clear explanation	Show what data will be deleted
Confirmation	Require explicit user action
Complete deletion	Remove all user data from backend
In-app option	Must be accessible within the app (not just web)

GDPR Compliance

Right	Implementation
Right to erasure	Full account + data deletion
Clear consent	Explicit confirmation required
Data portability	(Optional) Export before deletion

Confirmation Methods

Method	Security	UX	Use Case
Password re-entry	High	Low	Financial/sensitive apps
Type "DELETE"	Medium	Medium	Standard apps
Simple dialog	Low	High	Low-risk apps

Workflow

Phase 1: Ask Questions

Use AskUserQuestion to gather:

• Backend type (Supabase/Firebase/Custom)
• Confirmation method preference
• Grace period requirements
• Data cleanup scope

Phase 2: Domain Layer

Create in lib/features/settings/domain/:

1. AccountDeletionFailure - Failure types
2. Extend SettingsRepository with deleteAccount() method

See: implementation-guide.md for code.

Phase 3: Data Layer

Create in lib/features/settings/data/:

1. Implement deleteAccount() in repository
2. Add backend-specific deletion logic (Supabase/Firebase/API)
3. Add data cleanup (storage, analytics reset)

See: reference/repositories/ for implementations.

Phase 4: Presentation Layer

Create in lib/features/settings/presentation/:

1. DeleteAccountButton widget
2. DeleteAccountDialog with confirmation
3. AccountDeletionNotifier for state management
4. Add to Settings screen

See: reference/screens/ and reference/widgets/ for code.

Phase 5: Integration

1. Add delete account option to settings screen
2. Wire up confirmation dialog
3. Handle success (navigate to login)
4. Handle errors (show failure message)

Phase 6: Testing

dart run .claude/skills/account-deletion/scripts/check.dart

File Structure

• lib/features/settings/domain/failures/account_deletion_failure.dart
• lib/features/settings/data/repositories/settings_repository_impl.dart (extended)
• lib/features/settings/presentation/providers/account_deletion_notifier.dart
• lib/features/settings/presentation/widgets/delete_account_button.dart
• lib/features/settings/presentation/widgets/delete_account_dialog.dart

Core API

See: reference/providers/account_deletion_notifier.dart for full usage.

Method	Purpose
deleteAccount({confirmation})	Deletes account with optional confirmation
reset()	Resets state to initial
validateConfirmation(input)	Validates "DELETE" input

Failure Types

Type	When	UI Action
AccountDeletionNetworkFailure	No connection	Retry button
AccountDeletionServerFailure	Backend error	Generic error
AccountDeletionAuthFailure	Not authenticated	Navigate to login
AccountDeletionConfirmationFailure	Wrong confirmation	Show validation error

Guides

File	Content
implementation-guide.md	Step-by-step with code examples
checklist.md	Implementation verification

Reference Files

See: reference/ for complete implementations:

• reference/failures/ - AccountDeletionFailure sealed class
• reference/repositories/ - Supabase, Firebase, API implementations
• reference/providers/ - AccountDeletionNotifier
• reference/widgets/ - DeleteAccountButton, DeleteAccountDialog
• reference/screens/ - Settings screen integration

Commands

# Validate implementation
dart run .claude/skills/account-deletion/scripts/check.dart

# Check specific feature
dart run .claude/skills/account-deletion/scripts/check.dart --feature settings

Checklist

• AccountDeletionFailure sealed class created
• deleteAccount() in repository with backend deletion
• User data cleanup (storage, analytics) + auth sign-out
• DeleteAccountButton and DeleteAccountDialog widgets
• AccountDeletionNotifier with loading/error states
• Settings screen integration with clear explanation
• Explicit confirmation required before deletion
• App Store/Play Store: Easy to find, complete deletion, in-app option

See: checklist.md for detailed verification.

Common Issues

Issue	Solution
"User not authenticated"	Check auth state before deletion, handle expired session
Data remains after deletion	Clean up: Supabase/Firebase record, SecureStorage, SharedPrefs, Analytics
Dialog dismissed accidentally	Set barrierDismissible: false on showDialog
Stuck on loading	Add disposal check (if (_disposed) return) after async operations

See: implementation-guide.md for detailed solutions.

Related Skills

• /auth - Provides signOut method used after deletion
• /i18n - Localize deletion strings
• /testing - Write tests for deletion flow
• /design - UI polish for deletion flow

Next Steps

After /account-deletion: Run /i18n settings, /testing settings, then /design.