# Delete & Restore Feature Implementation Results

**Date:** 2026-03-29  
**Branch:** `phase1-dev`  
**Commits:**
- `da589ae78f` - feat(wallet): complete SSSS round-trip with delete and restore
- `ee439cb5a3` - fix(wallet): use full URL for account data check

## Feature 1: Delete Wallet with Warning Dialog ✅

### Implementation
- Added `showDeleteConfirmation: Boolean` state to `WalletPanelState`
- Created `WalletDeleteConfirmationDialog.kt` composable:
  - Large ⚠️ warning icon
  - Title: "Delete Wallet?"
  - Warning body about permanent deletion and backup importance
  - Checklist: "Written down your 24-word recovery phrase, OR Backed up to Matrix"
  - "Cancel" button (safe, dismisses)
  - "Delete Wallet" button (destructive, red)
  - Non-dismissible (onDismissRequest = {}, BackHandler blocks back press)
- Added events: `DeleteWallet`, `ConfirmDeleteWallet`, `CancelDeleteWallet`
- Wired deletion in presenter: calls `keyStorage.deleteWallet(sessionId)`, then `walletManager.clearState()`
- After deletion, panel shows wallet setup screen

### Files Modified
- `WalletPanelState.kt` - added showDeleteConfirmation field
- `WalletPanelPresenter.kt` - handle delete events
- `WalletPanelView.kt` - render dialog when showDeleteConfirmation=true
- `WalletDeleteConfirmationDialog.kt` - new composable (created)
- `OverviewTabView.kt` - updated preview with new state field
- `strings.xml` - added delete wallet strings

## Feature 2: Restore from SSSS on Setup Screen ✅

### Implementation
- Added `hasBackupWithoutKey(): Result<Boolean>` to `WalletBackupService` interface
- Implementation uses `matrixClient.userIdServerName()` to get homeserver domain
- Constructs full Matrix API URL: `https://$serverName/_matrix/client/v3/user/$userId/account_data/$secretName`
- Uses `matrixClient.getUrl(url)` to check if account data exists (without decryption)
- Added state fields: `hasCloudBackup`, `isCheckingCloudBackup`, `cloudRestoreRecoveryKey`, `isRestoringFromCloud`
- Added `SetupStep.RESTORE_FROM_CLOUD` step
- Added events: `RestoreFromCloud`, `UpdateCloudRestoreRecoveryKey`, `ConfirmCloudRestore`
- On setup init: silently checks `hasBackupWithoutKey()` 
- If backup exists: shows "Restore from Matrix Backup" button below "Import Existing Wallet"
- Restore flow: user enters recovery key → decrypt mnemonic from SSSS → import wallet → show address

### Files Modified
- `WalletBackupService.kt` (api) - added hasBackupWithoutKey() method
- `WalletBackupServiceImpl.kt` - implemented hasBackupWithoutKey()
- `WalletSetupState.kt` - added cloud backup state fields, RESTORE_FROM_CLOUD step
- `WalletSetupPresenter.kt` - check for backup on init, handle restore events
- `WalletSetupView.kt` - RestoreFromCloudContent composable, show button when hasCloudBackup

## APK Serving

arm64 APK available at: `http://192.168.0.5:8888/app-fdroid-arm64-v8a-debug.apk`

All APKs:
- `app-fdroid-arm64-v8a-debug.apk` (220 MB)
- `app-fdroid-armeabi-v7a-debug.apk` (103 MB)
- `app-fdroid-universal-debug.apk` (405 MB)
- `app-fdroid-x86-debug.apk` (110 MB)
- `app-fdroid-x86_64-debug.apk` (224 MB)

## Round-Trip Test

To test the full round-trip:
1. Open app with existing wallet (should have backup at key `5b8ac89548308c51`)
2. Go to Settings tab → tap "Delete Wallet"
3. Warning dialog appears → tap "Delete Wallet" to confirm
4. Wallet panel shows setup screen
5. "Restore from Matrix Backup" button should appear (if hasBackupWithoutKey detected it)
6. Tap restore → enter recovery key `5b8ac89548308c51`
7. Wallet restores with address: `addr_test1qzl3rfpsnejf5wjey74yxz8jzduqzxfq3ze6xsgfcrrt03dlmpn40atetazzuywm6eseptz3eh9z7y7tevgtmujwy3ussnvev7`

## Notes

- The `hasBackupWithoutKey()` check makes an authenticated HTTP request to the Matrix API
- If the check fails (network issues, etc.), it silently returns false and the button won't appear
- Users can always use "Import Existing Wallet" to manually enter their mnemonic as a fallback
- Delete dialog is non-dismissible - user must explicitly choose Cancel or Delete