crowd-funder-for-time-pwa/doc/storage-implementation-checklist.md

Storage Implementation Checklist

Core Services

1. Platform Service Layer

• Create base PlatformService interface

  • Define platform capabilities
    • File system access detection
    • Camera availability
    • Mobile platform detection
    • iOS specific detection
    • File download capability
    • SQLite capabilities
  • Add SQLite operations interface
    • Database initialization
    • Query execution
    • Transaction management
    • Prepared statements
    • Database statistics
  • Include platform detection
    • Web platform detection
    • Mobile platform detection
    • Desktop platform detection
  • Add file system operations
    • File read operations
    • File write operations
    • File delete operations
    • Directory listing

• Implement platform-specific services

  • WebPlatformService
    • AbsurdSQL integration
      • SQL.js initialization
      • IndexedDB backend setup
      • Virtual file system configuration
    • Web Worker support
      • Worker thread initialization
      • Message passing
      • Error handling
    • IndexedDB backend
      • Database creation
      • Transaction handling
      • Storage quota management (1GB limit)
    • SharedArrayBuffer detection
      • Feature detection
      • Fallback handling
    • File system operations (intentionally not supported)
      • File read operations (not available in web)
      • File write operations (not available in web)
      • File delete operations (not available in web)
      • Directory operations (not available in web)
    • Settings implementation
      • AbsurdSQL settings operations
        • Worker-based settings updates
        • IndexedDB transaction handling
        • SharedArrayBuffer support
      • Web-specific settings features
        • Storage quota management
        • Worker thread isolation
        • Cross-origin settings
      • Web performance optimizations
        • Settings caching
        • Batch updates
        • Worker message optimization
    • Account implementation
      • Web-specific account handling
        • Browser storage persistence
        • Session management
        • Cross-tab synchronization
      • Web security features
        • Origin isolation
        • Worker thread security
        • Storage access control
  • CapacitorPlatformService
    • Native SQLite integration
      • Database connection
      • Query execution
      • Transaction handling
    • Platform capabilities
      • iOS detection
      • Android detection
      • Feature availability
    • File system operations
      • File read/write
      • Directory operations
    • Storage permissions
      • iOS permissions
      • Android permissions
      • Permission request handling
    • Settings implementation
      • Native SQLite settings operations
        • Platform-specific SQLite optimizations
        • Native transaction handling
        • Platform storage management
      • Mobile-specific settings features
        • Platform preferences sync
        • Background state handling
      • Mobile performance optimizations
        • Native caching
        • Battery-efficient updates
        • Memory management
    • Account implementation
      • Mobile-specific account handling
        • Platform storage integration
        • Background state handling
      • Mobile security features
        • Platform sandboxing
        • Storage access control
        • App sandboxing
  • ElectronPlatformService (planned)
    • Node SQLite integration
      • Database connection
      • Query execution
      • Transaction handling
    • File system access
      • File read operations
      • File write operations
      • File delete operations
      • Directory operations
    • IPC communication
      • Main process communication
      • Renderer process handling
      • Message passing
    • Native features implementation
      • System dialogs
      • Native menus
      • System integration
    • Settings implementation
      • Node SQLite settings operations
        • Main process SQLite handling
        • IPC-based updates
        • File system persistence
      • Desktop-specific settings features
        • System preferences integration
        • Multi-window sync
        • Offline state handling
      • Desktop performance optimizations
        • Process-based caching
        • Window state management
        • Resource optimization
    • Account implementation
      • Desktop-specific account handling
        • System keychain integration
        • Native authentication
        • Process isolation
      • Desktop security features
        • Process sandboxing
        • IPC security
        • File system protection

2. SQLite Service Layer

• Create base BaseSQLiteService

  • Common SQLite operations
    • Query execution
    • Transaction management
    • Prepared statements
    • Database statistics
  • Performance monitoring
    • Query timing
    • Memory usage
    • Database size
    • Statement caching
  • Error handling
    • Connection errors
    • Query errors
    • Transaction errors
    • Resource errors
  • Transaction support
    • Begin transaction
    • Commit transaction
    • Rollback transaction
    • Nested transactions

• Implement platform-specific SQLite services

  • AbsurdSQLService
    • Web Worker initialization
      • Worker creation
      • Message handling
      • Error propagation
    • IndexedDB backend setup
      • Database creation
      • Transaction handling
      • Storage management
    • Prepared statements
      • Statement preparation
      • Parameter binding
      • Statement caching
    • Performance optimizations
      • WAL mode
      • Memory mapping
      • Cache configuration
    • WAL mode support
      • Journal mode configuration
      • Synchronization settings
      • Checkpoint handling
    • Memory-mapped I/O
      • MMAP size configuration (30GB)
      • Memory management
      • Performance monitoring
  • CapacitorSQLiteService
    • Native SQLite connection
      • Database initialization
      • Connection management
      • Error handling
    • Basic platform features
      • Query execution
      • Transaction handling
      • Statement management
    • Error handling
      • Connection errors
      • Query errors
      • Resource errors
    • WAL mode support
      • Journal mode
      • Synchronization
      • Checkpointing
    • SQLCipher integration (planned)
      • Encryption setup
      • Key management
      • Secure storage
  • ElectronSQLiteService (planned)
    • Node SQLite integration
      • Database connection
      • Query execution
      • Transaction handling
    • IPC communication
      • Process communication
      • Error handling
      • Resource management
    • File system access
      • Native file operations
      • Path handling
      • Permissions
    • Native features
      • System integration
      • Native dialogs
      • Process management

3. Security Layer

• Implement platform-specific security
  • Web platform
    • Worker isolation
      • Thread separation
      • Message security
      • Resource isolation
    • Storage quota management
      • Quota detection
      • Usage monitoring
      • Error handling
    • Origin isolation
      • Cross-origin protection
      • Resource isolation
      • Security policy
    • Storage security
      • Access control
      • Data protection
      • Quota management
  • Mobile platform
    • Platform permissions
      • Storage access
      • File operations
      • System integration
    • Platform security
      • App sandboxing
      • Storage protection
      • Access control
    • SQLCipher integration (planned)
      • Encryption setup
      • Key management
      • Secure storage
  • Electron platform (planned)
    • IPC security
      • Message validation
      • Process isolation
      • Resource protection
    • File system security
      • Access control
      • Path validation
      • Permission management
    • Auto-update security
      • Update verification
      • Code signing
      • Rollback protection
    • Native security features
      • System integration
      • Security policies
      • Resource protection

Platform-Specific Implementation

Web Platform

• Setup absurd-sql

  • Install dependencies

    {
      "@jlongster/sql.js": "^1.8.0",
      "absurd-sql": "^1.8.0"
    }
    

  • Configure Web Worker
    • Worker initialization
    • Message handling
    • Error propagation
  • Setup IndexedDB backend
    • Database creation
    • Transaction handling
    • Storage management
  • Configure database pragmas

    PRAGMA journal_mode = WAL;
    PRAGMA synchronous = NORMAL;
    PRAGMA temp_store = MEMORY;
    PRAGMA cache_size = -2000;
    PRAGMA mmap_size = 30000000000;
    

• Update build configuration

  • Configure worker bundling
    • Worker file handling
    • Asset management
    • Source maps
  • Setup asset handling
    • SQL.js WASM
    • Worker scripts
    • Static assets
  • Configure chunk splitting
    • Code splitting
    • Dynamic imports
    • Asset optimization

• Implement fallback mechanisms

  • SharedArrayBuffer detection
    • Feature detection
    • Fallback handling
    • Error reporting
  • Storage quota monitoring
    • Quota detection
    • Usage tracking
    • Error handling
  • Worker initialization fallback
    • Fallback detection
    • Alternative initialization
    • Error recovery
  • Error recovery
    • Connection recovery
    • Transaction rollback
    • State restoration

Mobile Platform

• Setup Capacitor SQLite

  • Install dependencies
    • Core SQLite plugin
    • Platform plugins
    • Native dependencies
  • Configure native SQLite
    • Database initialization
    • Connection management
    • Query handling
  • Configure basic permissions
    • Storage access
    • File operations
    • System integration

• Update Capacitor config

  • Add basic platform permissions
    • iOS permissions
    • Android permissions
    • Feature flags
  • Configure storage limits
    • iOS storage limits
    • Android storage limits
    • Quota management
  • Setup platform security
    • App sandboxing
    • Storage protection
    • Access control

Electron Platform (planned)

• Setup Node SQLite

  • Install dependencies
    • SQLite3 module
    • Native bindings
    • Development tools
  • Configure IPC
    • Main process setup
    • Renderer process handling
    • Message passing
  • Setup file system access
    • Native file operations
    • Path handling
    • Permission management
  • Implement secure storage
    • Encryption setup
    • Key management
    • Secure containers

• Update Electron config

  • Add security policies
    • CSP configuration
    • Process isolation
    • Resource protection
  • Configure file access
    • Access control
    • Path validation
    • Permission management
  • Setup auto-updates
    • Update server
    • Code signing
    • Rollback protection
  • Configure IPC security
    • Message validation
    • Process isolation
    • Resource protection

Data Models and Types

1. Database Schema

• Define tables

  -- Accounts table
  CREATE TABLE accounts (
    did TEXT PRIMARY KEY,
    public_key_hex TEXT NOT NULL,
    created_at INTEGER NOT NULL,
    updated_at INTEGER NOT NULL
  );
  
  -- Settings table
  CREATE TABLE settings (
    key TEXT PRIMARY KEY,
    value TEXT NOT NULL,
    updated_at INTEGER NOT NULL
  );
  
  -- Contacts table
  CREATE TABLE contacts (
    id TEXT PRIMARY KEY,
    did TEXT NOT NULL,
    name TEXT,
    created_at INTEGER NOT NULL,
    updated_at INTEGER NOT NULL,
    FOREIGN KEY (did) REFERENCES accounts(did)
  );
  
  -- Indexes for performance
  CREATE INDEX idx_accounts_created_at ON accounts(created_at);
  CREATE INDEX idx_contacts_did ON contacts(did);
  CREATE INDEX idx_settings_updated_at ON settings(updated_at);
  

2. Type Definitions

• Create interfaces

  interface PlatformCapabilities {
    hasFileSystem: boolean;
    hasCamera: boolean;
    isMobile: boolean;
    isIOS: boolean;
    hasFileDownload: boolean;
    needsFileHandlingInstructions: boolean;
    sqlite: {
      supported: boolean;
      runsInWorker: boolean;
      hasSharedArrayBuffer: boolean;
      supportsWAL: boolean;
      maxSize?: number;
    };
  }
  
  interface SQLiteConfig {
    name: string;
    useWAL?: boolean;
    useMMap?: boolean;
    mmapSize?: number;
    usePreparedStatements?: boolean;
    maxPreparedStatements?: number;
  }
  
  interface SQLiteStats {
    totalQueries: number;
    avgExecutionTime: number;
    preparedStatements: number;
    databaseSize: number;
    walMode: boolean;
    mmapActive: boolean;
  }
  

Testing

1. Unit Tests

• Test platform services
  • Platform detection
    • Web platform
    • Mobile platform
    • Desktop platform
  • Capability reporting
    • Feature detection
    • Platform specifics
    • Error cases
  • Basic SQLite operations
    • Query execution
    • Transaction handling
    • Error cases
  • Basic error handling
    • Connection errors
    • Query errors
    • Resource errors

2. Integration Tests

• Test SQLite services
  • Web platform tests
    • Worker integration
    • IndexedDB backend
    • Performance tests
  • Basic mobile platform tests
    • Native SQLite
    • Platform features
    • Error handling
  • Electron platform tests (planned)
    • Node SQLite
    • IPC communication
    • File system
  • Cross-platform tests
    • Feature parity
    • Data consistency
    • Performance comparison

3. E2E Tests

• Test workflows
  • Basic database operations
    • CRUD operations
    • Transaction handling
    • Error recovery
  • Platform transitions
    • Web to mobile
    • Mobile to web
    • State preservation
  • Basic error recovery
    • Connection loss
    • Transaction failure
    • Resource errors
  • Performance benchmarks
    • Query performance
    • Transaction speed
    • Memory usage
    • Storage efficiency

Documentation

1. Technical Documentation

• Update architecture docs
  • System overview
  • Component interaction
  • Platform specifics
• Add basic API documentation
  • Interface definitions
  • Method signatures
  • Usage examples
• Document platform capabilities
  • Feature matrix
  • Platform support
  • Limitations
• Document security measures
  • Platform security
  • Access control
  • Security policies

2. User Documentation

• Update basic user guides
  • Installation
  • Configuration
  • Basic usage
• Add basic troubleshooting guides
  • Common issues
  • Error messages
  • Recovery steps
• Document implemented platform features
  • Web platform
  • Mobile platform
  • Desktop platform
• Add basic performance tips
  • Optimization techniques
  • Best practices
  • Platform specifics

Monitoring and Analytics

1. Performance Monitoring

• Basic query execution time
  • Query timing
  • Transaction timing
  • Statement timing
• Database size monitoring
  • Size tracking
  • Growth patterns
  • Quota management
• Basic memory usage
  • Heap usage
  • Cache usage
  • Worker memory
• Worker performance
  • Message timing
  • Processing time
  • Resource usage

2. Error Tracking

• Basic error logging
  • Error capture
  • Stack traces
  • Context data
• Basic performance monitoring
  • Query metrics
  • Resource usage
  • Timing data
• Platform-specific errors
  • Web platform
  • Mobile platform
  • Desktop platform
• Basic recovery tracking
  • Recovery success
  • Failure patterns
  • User impact

Security Audit

1. Code Review

• Review platform services
  • Interface security
  • Data handling
  • Error management
• Check basic SQLite implementations
  • Query security
  • Transaction safety
  • Resource management
• Verify basic error handling
  • Error propagation
  • Recovery procedures
  • User feedback
• Complete dependency audit
  • Security vulnerabilities
  • License compliance
  • Update requirements

2. Platform Security

• Web platform
  • Worker isolation
    • Thread separation
    • Message security
    • Resource isolation
  • Basic storage security
    • Access control
    • Data protection
    • Quota management
  • Origin isolation
    • Cross-origin protection
    • Resource isolation
    • Security policy
• Mobile platform
  • Platform permissions
    • Storage access
    • File operations
    • System integration
  • Platform security
    • App sandboxing
    • Storage protection
    • Access control
  • SQLCipher integration (planned)
    • Encryption setup
    • Key management
    • Secure storage
• Electron platform (planned)
  • IPC security
    • Message validation
    • Process isolation
    • Resource protection
  • File system security
    • Access control
    • Path validation
    • Permission management
  • Auto-update security
    • Update verification
    • Code signing
    • Rollback protection

Success Criteria

1. Performance

• Basic query response time < 100ms
  • Simple queries
  • Indexed queries
  • Prepared statements
• Basic transaction completion < 500ms
  • Single operations
  • Batch operations
  • Complex transactions
• Basic memory usage < 50MB
  • Normal operation
  • Peak usage
  • Background state
• Database size < platform limits
  • Web platform (1GB)
  • Mobile platform (2GB)
  • Desktop platform (10GB, planned)

2. Reliability

• Basic uptime
  • Service availability
  • Connection stability
  • Error recovery
• Basic data integrity
  • Transaction atomicity
  • Data consistency
  • Error handling
• Basic recovery
  • Connection recovery
  • Transaction rollback
  • State restoration
• Basic transaction atomicity
  • Commit success
  • Rollback handling
  • Error recovery

3. Security

• Platform-specific security
  • Web platform security
  • Mobile platform security
  • Desktop platform security (planned)
• Basic access control
  • User permissions
  • Resource access
  • Operation limits
• Basic audit logging
  • Access logs
  • Operation logs
  • Security events
• Advanced security features (planned)
  • SQLCipher encryption
  • Biometric authentication
  • Secure enclave
  • Key management

4. User Experience

• Basic platform transitions
  • Web to mobile
  • Mobile to web
  • State preservation
• Basic error messages
  • User feedback
  • Recovery guidance
  • Error context
• Basic progress indicators
  • Operation status
  • Loading states
  • Completion feedback
• Basic recovery options
  • Automatic recovery
  • Manual intervention
  • Data restoration