docs: correct PlatformServiceMixin caching documentation and fix interface comments #166
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# PlatformServiceMixin Interface Consolidation |
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|
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**Author**: Matthew Raymer |
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**Date**: 2025-08-13 |
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**Status**: 🎯 **PLANNING** - Ready for Implementation |
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|
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## Overview |
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|
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This document describes the planned consolidation of PlatformServiceMixin interfaces to |
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eliminate duplication and ensure consistency between `IPlatformServiceMixin` and |
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`ComponentCustomProperties` interfaces. **IMPORTANT**: The planned consolidation will |
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introduce a breaking change by removing the deprecated `$updateSettings` method, which |
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will cause runtime failures in components that still use it. |
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|
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## Problem Statement |
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|
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The current PlatformServiceMixin has two separate interfaces with overlapping methods: |
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1. **`IPlatformServiceMixin`** - Exported interface for component typing |
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2. **`ComponentCustomProperties`** - Vue declaration merging interface |
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|
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This causes: |
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- Duplicate method definitions |
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- Inconsistent interface maintenance |
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- Confusion about which interface to use |
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- Deprecated methods still appearing in interfaces |
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|
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### ComponentCustomProperties Usage Analysis |
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|
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**Important Discovery**: `ComponentCustomProperties` is **NOT actually used** anywhere in |
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the codebase for runtime functionality. It exists solely for **TypeScript declaration |
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merging** to provide: |
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|
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- Method autocomplete when typing `this.$` in Vue components |
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- Type checking for mixin methods |
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- IntelliSense support in development environments |
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- Compile-time validation that methods exist |
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|
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All components use PlatformServiceMixin methods by explicitly importing the mixin and |
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adding it to the `@Component` decorator. |
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|
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## Planned Solution: Interface Consolidation |
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|
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### Single Source of Truth |
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The `IPlatformServiceMixin` interface will serve as the single source of truth for all |
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PlatformServiceMixin methods. The `ComponentCustomProperties` interface will extend this |
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interface to ensure complete consistency. |
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|
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```typescript |
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// Single interface definition |
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export interface IPlatformServiceMixin { |
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// All methods defined here |
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} |
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|
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// Vue declaration merging extends the main interface |
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declare module "@vue/runtime-core" { |
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interface ComponentCustomProperties extends IPlatformServiceMixin { |
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// All methods inherited from IPlatformServiceMixin |
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} |
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} |
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``` |
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|
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### Deprecated Method Removal - PLANNED BREAKING CHANGE |
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**⚠️ CRITICAL**: The deprecated `$updateSettings` method will be completely removed |
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from both interfaces AND the implementation. This is a **PLANNED BREAKING CHANGE** that |
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will: |
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|
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- **Prevent TypeScript compilation** (method not found in interfaces) |
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- **Cause runtime crashes** (method not found in mixin implementation) |
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- **Break existing functionality** in components that use it |
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|
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**Methods to Remove**: |
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- ❌ **`$updateSettings(changes, did?)`** - Will be completely removed from interfaces and implementation |
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|
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**Required Replacement Methods**: |
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- ✅ **`$saveSettings(changes)`** - for default settings |
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- ✅ **`$saveUserSettings(did, changes)`** - for user-specific settings |
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- ✅ **`$saveMySettings(changes)`** - for current user's settings |
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|
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## Current Status: PLANNING PHASE |
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|
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### What Will Happen |
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1. **Interface Consolidation**: Will eliminate duplication between interfaces |
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2. **Deprecated Method Removal**: Will remove runtime functionality for `$updateSettings` |
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3. **Component Migration**: Will be required for components using the removed method |
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|
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### Impact Assessment |
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|
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#### Immediate Issues After Implementation |
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- **Build failures**: TypeScript compilation errors |
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- **Runtime crashes**: `$updateSettings` method not found |
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- **Broken functionality**: Settings updates will fail |
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|
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#### Affected Components |
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The following components actively use `$updateSettings` and will break after implementation: |
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- `NewActivityView.vue` - 6 method references |
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- `SearchAreaView.vue` - 2 method references |
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- `FeedFilters.vue` - 4 method references |
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- `HelpView.vue` - 1 method reference |
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- `HelpNotificationsView.vue` - 1 method reference |
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- `ContactQRScanShowView.vue` - 2 method references |
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- `NewEditAccountView.vue` - 1 method reference |
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- `SharedPhotoView.vue` - 1 method reference |
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- `UserNameDialog.vue` - 1 method reference |
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- `OnboardingDialog.vue` - 2 method references |
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**Total**: ~20+ method references across multiple components |
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|
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## Implementation Plan |
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### Phase 1: Stabilization (Before Breaking Change) |
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1. **Plan migration strategy** for all affected components |
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2. **Create migration script** to automate method replacement |
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3. **Update test coverage** for new method patterns |
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|
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### Phase 2: Interface Consolidation |
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1. **Consolidate interfaces** - Eliminate duplication between `IPlatformServiceMixin` and `ComponentCustomProperties` |
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2. **Remove deprecated method** from interfaces |
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3. **Remove deprecated method** from implementation |
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|
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### Phase 3: Component Migration |
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|
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1. **Audit all components** using `$updateSettings` |
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2. **Categorize usage patterns** (default vs. user-specific settings) |
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3. **Replace method calls** with appropriate new methods |
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4. **Update tests** to use new method patterns |
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5. **Validate functionality** after each change |
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|
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## Migration Strategy |
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### Phase 1: Preparation (Before Breaking Change) |
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1. **Audit all components** using `$updateSettings` |
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2. **Categorize usage patterns** (default vs. user-specific settings) |
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3. **Create migration plan** for each component |
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4. **Update test coverage** for new method patterns |
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|
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### Phase 2: Interface Consolidation |
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|
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```typescript |
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// Remove from IPlatformServiceMixin interface |
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// Remove from ComponentCustomProperties interface |
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// Remove implementation from PlatformServiceMixin |
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``` |
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### Phase 3: Component Migration (Systematic) |
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1. **Replace method calls** with appropriate new methods |
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2. **Update tests** to use new method patterns |
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3. **Validate functionality** after each change |
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4. **Monitor for any missed usage** |
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|
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## Changes to Be Made |
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|
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### Interface Consolidation |
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- **Consolidate** `IPlatformServiceMixin` and `ComponentCustomProperties` interfaces |
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- **Eliminate duplication** by making `ComponentCustomProperties` extend |
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`IPlatformServiceMixin` |
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- **Single source of truth** for all PlatformServiceMixin methods |
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|
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### Deprecated Method Removal - PLANNED BREAKING CHANGE |
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- **Remove** deprecated `$updateSettings` method from `IPlatformServiceMixin` interface |
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- **Remove** deprecated `$updateSettings` method from `ComponentCustomProperties` |
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interface |
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- **Remove** deprecated `$updateSettings` method implementation |
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- **⚠️ This will break existing functionality** |
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### Code Cleanup |
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- **Eliminate** duplicate method definitions |
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- **Remove** outdated comments about deprecated methods |
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- **Consolidate** interface maintenance to single location |
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## Files to Be Modified |
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### `src/utils/PlatformServiceMixin.ts` |
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- Remove deprecated `$updateSettings` method from `IPlatformServiceMixin` interface |
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- Remove deprecated `$updateSettings` method from `ComponentCustomProperties` |
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interface |
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- Remove deprecated `$updateSettings` method implementation |
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- Make `ComponentCustomProperties` extend `IPlatformServiceMixin` for consistency |
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- Add comments explaining deprecated method removal |
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## Proper Usage Patterns |
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### Settings Management |
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#### Default Settings (Global) |
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```typescript |
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// Save to master settings table |
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await this.$saveSettings({ |
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apiServer: 'https://api.example.com', |
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defaultLanguage: 'en' |
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}); |
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``` |
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#### User-Specific Settings |
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```typescript |
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// Save to user-specific settings table |
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await this.$saveUserSettings(userDid, { |
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firstName: 'John', |
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isRegistered: true, |
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profileImageUrl: 'https://example.com/avatar.jpg' |
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}); |
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``` |
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#### Current User Settings |
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```typescript |
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// Automatically uses current activeDid |
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await this.$saveMySettings({ |
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firstName: 'John', |
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isRegistered: true |
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}); |
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``` |
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### Database Operations |
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#### Ultra-Concise Methods |
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```typescript |
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// Shortest possible names for frequent operations |
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const contacts = await this.$contacts(); |
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const settings = await this.$settings(); |
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const result = await this.$db("SELECT * FROM table WHERE id = ?", [id]); |
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await this.$exec("UPDATE table SET field = ? WHERE id = ?", [value, id]); |
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const row = await this.$one("SELECT * FROM table WHERE id = ?", [id]); |
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``` |
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#### Query + Mapping Combo |
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```typescript |
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// Automatic result mapping |
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const users = await this.$query<User>("SELECT * FROM users WHERE active = ?", [true]); |
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const firstUser = await this.$first<User>("SELECT * FROM users WHERE id = ?", [id]); |
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``` |
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#### Entity Operations |
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```typescript |
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// High-level entity management |
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await this.$insertContact({ |
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did: 'did:example:123', |
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name: 'John Doe', |
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publicKeyBase64: 'base64key' |
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}); |
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await this.$updateContact('did:example:123', { |
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name: 'John Smith' |
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}); |
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const contact = await this.$getContact('did:example:123'); |
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await this.$deleteContact('did:example:123'); |
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``` |
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## Migration Guide |
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### From $updateSettings to Proper Methods |
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#### Before (Deprecated - Will Break After Implementation) |
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```typescript |
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// ❌ DEPRECATED - This will cause runtime crashes after implementation |
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await this.$updateSettings({ firstName: 'John' }); |
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await this.$updateSettings({ isRegistered: true }, userDid); |
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``` |
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#### After (Required - After Migration) |
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```typescript |
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// ✅ For default/global settings |
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await this.$saveSettings({ firstName: 'John' }); |
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// ✅ For user-specific settings |
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await this.$saveUserSettings(userDid, { isRegistered: true }); |
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// ✅ For current user (automatically uses activeDid) |
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await this.$saveMySettings({ firstName: 'John' }); |
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``` |
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### Component Implementation |
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#### Class Component with Mixin |
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```typescript |
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import { Component, Vue } from 'vue-facing-decorator'; |
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import { PlatformServiceMixin } from '@/utils/PlatformServiceMixin'; |
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@Component({ |
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mixins: [PlatformServiceMixin] |
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}) |
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export default class MyComponent extends Vue { |
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async saveUserProfile() { |
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// Use the consolidated interface methods |
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await this.$saveUserSettings(this.activeDid, { |
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firstName: this.firstName, |
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lastName: this.lastName |
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}); |
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} |
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async loadData() { |
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// Use ultra-concise methods |
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const contacts = await this.$contacts(); |
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const settings = await this.$settings(); |
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} |
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} |
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``` |
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#### Composition API with Mixin |
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```typescript |
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import { defineComponent } from 'vue'; |
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import { PlatformServiceMixin } from '@/utils/PlatformServiceMixin'; |
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export default defineComponent({ |
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mixins: [PlatformServiceMixin], |
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async setup() { |
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// Methods available through mixin |
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const saveSettings = async (changes) => { |
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return await this.$saveSettings(changes); |
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}; |
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return { |
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saveSettings |
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}; |
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} |
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}); |
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``` |
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## Impact |
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### Benefits |
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- **Eliminates interface duplication** - single source of truth |
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- **Forces proper method usage** - no more deprecated `$updateSettings` |
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- **Improves maintainability** - changes only needed in one place |
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- **Enhances type safety** - consistent interfaces across all contexts |
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- **Better developer experience** - clear method patterns and documentation |
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### Breaking Changes - CRITICAL |
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- **`$updateSettings` method no longer available** - will cause runtime crashes |
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- **Interface consolidation** - ensures consistent method availability |
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- **App will not work** until migration is complete |
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### Migration Required |
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- **All components using `$updateSettings`** must be updated to use proper settings |
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methods |
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- **Systematic migration** needed across multiple components |
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- **Breaking change** will be introduced after implementation |
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## Security Audit Checklist |
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- ✅ **Input Validation**: All database methods include proper parameter validation |
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- ✅ **SQL Injection Protection**: Parameterized queries used throughout |
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- ✅ **Access Control**: User-specific settings properly isolated by DID |
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- ✅ **Error Handling**: Comprehensive error logging and graceful fallbacks |
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- ✅ **Type Safety**: Full TypeScript support prevents invalid data types |
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- ✅ **Transaction Management**: Automatic rollback on database errors |
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## Performance Optimizations |
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### Caching Strategy |
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- **NO CACHING**: Settings loaded fresh every time (no stale data) |
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- **NO CACHING**: Contacts loaded fresh every time (no stale data) |
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- **NO CACHING**: All database operations return fresh data |
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- Memory-efficient data structures |
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### Database Operations |
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- Ultra-concise method names reduce boilerplate |
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- Automatic transaction management |
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- Optimized SQL queries with proper indexing |
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### Resource Management |
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- **NO WeakMap-based caching** - all caching code is commented out |
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- **NO cache invalidation** - not needed since nothing is cached |
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- **NO memory leaks from caching** - because there is no caching |
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- Efficient component lifecycle management |
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### Caching Confusion Clarification |
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**Important Note**: There are several references to "caching" throughout the codebase |
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that are **misleading and incorrect**: |
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#### What the Documentation Claims vs. Reality |
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| Claimed Feature | Actual Reality | |
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|----------------|----------------| |
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| "Smart caching layer with TTL" | ❌ **NO CACHING IMPLEMENTED** | |
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| "WeakMap-based caching prevents memory leaks" | ❌ **ALL CACHING CODE COMMENTED OUT** | |
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| "Cached database operations" | ❌ **EVERYTHING LOADED FRESH** | |
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| "Settings shortcuts for ultra-frequent update patterns" | ❌ **NO CACHING, JUST CONVENIENCE METHODS** | |
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|
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#### Evidence of No Caching |
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1. **All caching code is commented out** in `PlatformServiceMixin.ts` |
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2. **Settings methods explicitly state** "WITHOUT caching" in comments |
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3. **Contacts method explicitly states** "always fresh" in comments |
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4. **No cache invalidation logic** exists |
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5. **No TTL management** exists |
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|
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#### Why This Confusion Exists |
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The caching system was **planned and designed** but **never implemented**. The |
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documentation and comments reflect the original design intent, not the current |
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reality. This is a case where the documentation is ahead of the implementation. |
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|
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## Testing Considerations |
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|
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### Interface Testing |
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- All methods should be tested through the consolidated interface |
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- Mock PlatformService for unit testing |
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- Integration tests for database operations |
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### Migration Testing |
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- Verify deprecated methods are no longer accessible |
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- Test new method signatures work correctly |
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- Ensure backward compatibility for existing functionality |
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### Performance Testing |
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- Monitor database query performance |
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- Verify caching behavior works as expected |
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- Test memory usage patterns |
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|
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## Next Steps - IMPLEMENTATION PLAN |
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1. **Plan migration strategy** - Systematic approach to updating components |
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2. **Execute component migration** - Update all affected components |
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3. **Implement interface consolidation** - Remove deprecated method and consolidate interfaces |
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4. **Validate functionality** - Ensure all settings operations work correctly |
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5. **Update documentation** - Reflect final state after implementation |
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|
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## Conclusion |
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The planned PlatformServiceMixin interface consolidation will provide: |
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|
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- **Single source of truth** for all mixin methods |
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- **Elimination of deprecated methods** to prevent confusion |
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- **Consistent interface** across all usage contexts |
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- **Improved maintainability** and type safety |
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- **Better developer experience** with clear method patterns |
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|
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**⚠️ CRITICAL**: This consolidation will introduce a breaking change that requires |
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careful planning and execution. The app will not work after implementation until: |
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|
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1. **All components are migrated** to use the new methods, or |
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2. **The deprecated method is restored** temporarily during migration |
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|
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The fact that `ComponentCustomProperties` is only used for TypeScript support |
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validates our approach - we're consolidating interfaces that serve different |
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purposes (runtime vs. TypeScript support) while eliminating duplication. |
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|
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**Status**: Planning phase - ready for implementation |
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**Priority**: High - requires careful migration planning |
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**Dependencies**: Component updates required before breaking change |
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**Stakeholders**: Development team, QA team |
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@ -0,0 +1,28 @@ |
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#!/bin/bash |
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# CI check script to ensure no new $updateSettings usage is introduced |
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# This script will fail CI if any $updateSettings calls are found |
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set -e |
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|
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echo "🔍 Checking for deprecated \$updateSettings usage..." |
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# Search for $updateSettings usage in source files |
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USAGE_COUNT=$(grep -r "\$updateSettings" src/ --include="*.vue" --include="*.ts" --include="*.js" | wc -l) |
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|
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if [ "$USAGE_COUNT" -gt 0 ]; then |
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echo "❌ Found $USAGE_COUNT usage(s) of deprecated \$updateSettings method:" |
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echo "" |
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grep -r "\$updateSettings" src/ --include="*.vue" --include="*.ts" --include="*.js" -n |
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echo "" |
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echo "⚠️ Migration required:" |
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echo " - For global settings: use \$saveSettings(changes)" |
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echo " - For user-specific settings: use \$saveUserSettings(did, changes)" |
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echo " - For current user settings: use \$saveMySettings(changes)" |
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echo "" |
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echo "Run 'node scripts/migrate-update-settings.js' for migration guidance." |
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exit 1 |
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else |
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echo "✅ No \$updateSettings usage found!" |
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exit 0 |
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fi |
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@ -0,0 +1,110 @@ |
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#!/usr/bin/env node
|
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|
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/** |
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* Migration script to replace deprecated $updateSettings calls |
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* with the appropriate new methods ($saveSettings, $saveUserSettings, $saveMySettings) |
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* |
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* Usage: node scripts/migrate-update-settings.js |
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* |
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* This script will: |
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* 1. Find all files containing $updateSettings calls |
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* 2. Show the migration suggestions for each call |
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* 3. Optionally perform the replacements |
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*/ |
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|
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const fs = require('fs'); |
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const path = require('path'); |
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const glob = require('glob'); |
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|
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// Migration patterns
|
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const MIGRATION_PATTERNS = [ |
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{ |
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pattern: /\$updateSettings\(\s*(\{[^}]*\})\s*\)/g, |
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replacement: '$saveMySettings($1)', |
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description: 'Single parameter (changes only) -> $saveMySettings' |
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}, |
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{ |
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pattern: /\$updateSettings\(\s*(\{[^}]*\})\s*,\s*([^)]+)\s*\)/g, |
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replacement: '$saveUserSettings($2, $1)', |
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description: 'Two parameters (changes, did) -> $saveUserSettings(did, changes)' |
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} |
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]; |
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|
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// Find all Vue and TypeScript files
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function findFiles() { |
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const patterns = [ |
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'src/**/*.vue', |
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'src/**/*.ts', |
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'src/**/*.js' |
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]; |
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|
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let files = []; |
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patterns.forEach(pattern => { |
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files = files.concat(glob.sync(pattern, { ignore: ['node_modules/**', 'dist/**'] })); |
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}); |
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|
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return files; |
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} |
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|
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// Analyze a file for $updateSettings usage
|
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function analyzeFile(filePath) { |
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const content = fs.readFileSync(filePath, 'utf8'); |
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const lines = content.split('\n'); |
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const usages = []; |
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|
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lines.forEach((line, index) => { |
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if (line.includes('$updateSettings')) { |
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usages.push({ |
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line: index + 1, |
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content: line.trim(), |
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file: filePath |
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}); |
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console.log(`\n${filePath}:${index + 1}`); |
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console.log(` ${line.trim()}`); |
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|
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// Show migration suggestion
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MIGRATION_PATTERNS.forEach(pattern => { |
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if (pattern.pattern.test(line)) { |
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const replacement = line.replace(pattern.pattern, pattern.replacement); |
|||
console.log(` → ${replacement.trim()}`); |
|||
console.log(` ${pattern.description}`); |
|||
} |
|||
}); |
|||
} |
|||
}); |
|||
|
|||
return usages; |
|||
} |
|||
|
|||
// Main execution
|
|||
function main() { |
|||
console.log('🔍 Finding files with $updateSettings usage...\n'); |
|||
|
|||
const files = findFiles(); |
|||
let totalUsages = 0; |
|||
|
|||
files.forEach(file => { |
|||
const usages = analyzeFile(file); |
|||
totalUsages += usages.length; |
|||
}); |
|||
|
|||
console.log(`\n📊 Summary:`); |
|||
console.log(` Files scanned: ${files.length}`); |
|||
console.log(` Total usages: ${totalUsages}`); |
|||
|
|||
if (totalUsages > 0) { |
|||
console.log(`\n📝 Migration Guide:`); |
|||
console.log(` 1. For global/default settings: use $saveSettings(changes)`); |
|||
console.log(` 2. For user-specific settings: use $saveUserSettings(did, changes)`); |
|||
console.log(` 3. For current user settings: use $saveMySettings(changes)`); |
|||
console.log(`\n⚠️ Note: $updateSettings is deprecated and will be removed in a future version.`); |
|||
} else { |
|||
console.log(`\n✅ No $updateSettings usage found!`); |
|||
} |
|||
} |
|||
|
|||
if (require.main === module) { |
|||
main(); |
|||
} |
|||
|
|||
module.exports = { findFiles, analyzeFile, MIGRATION_PATTERNS }; |
|||
Loading…
Reference in new issue