Philingo English Reader

Added visual feedback system for API operations

• • Implemented thin status bar below header for real-time API status
• • Status bar shows animated pulse (brand color) during API loading
• • Status bar turns red with detailed error messages on API failures
• • Error messages auto-dismiss after 5 seconds
• • Displays operation context (e.g., "Looking up word definition", "Generating audio", "Analyzing pronunciation")
• • Minimal, non-intrusive design that doesn't disrupt user workflow

Enhanced state management for API operations

• • Added apiStatus state to track loading, errors, and current operation
• • Implemented handleApiStart callback to notify API request initiation
• • Implemented handleApiSuccess callback to clear loading state
• • Implemented handleApiError callback with automatic error dismissal
• • Passes status callbacks to Reader component for centralized status management

Integrated API status callbacks throughout Reader component

• • Added onApiStart, onApiSuccess, onApiError props to ReaderProps interface
• • Word definition lookup (fetchWordAnnotation) now reports status
• • TTS audio generation (fetchTTSAudio) now reports status
• • Pronunciation analysis (analyzePronunciation) now reports status
• • Enhanced error handling with user-friendly error messages
• • All API errors now provide specific error context to users

Improved error communication to users

• • Replaced generic error handling with specific error messages
• • Error messages extracted from Error objects when available
• • Fallback to descriptive default messages for each operation type
• • Errors displayed prominently but non-blockingly in status bar

Enhanced feedback and transparency

• • Users now always know when API operations are in progress
• • Clear indication of what operation is being performed
• • Immediate error feedback with actionable information
• • Reduced confusion when API calls fail or take time

Improved click interaction in read mode for better UX

• • In read mode, clicking annotated words now plays pronunciation directly
• • Clicking unannotated words still looks up definition as before
• • Removed separate volume button for more compact UI
• • Only IPA transcription badge remains for cleaner appearance
• • Changed cursor to pointer when hovering over annotated words
• • Simplified handlePlay function by removing unnecessary state management

Streamlined pronunciation playback logic

• • Removed isPlaying state and related loading indicators
• • Cleaner click-to-play experience
• • Removed Volume2 icon import (no longer needed)

Improved Format button behavior

• • Format button now creates one sentence per line without empty lines
• • Added regex to remove any accidental empty lines
• • More compact and readable text layout
• • Updated comment to reflect "no empty lines" behavior

Minor improvements and cleanup

• • Reorganized imports for better readability
• • Simplified cursor class logic in read mode
• • Removed unnecessary state management code

Implemented flexible multi-provider architecture

• • Added LLMProvider type supporting 'gemini' and 'openai'
• • Created unified llmService.ts interface layer
• • Provider selection automatically routes to appropriate service
• • All API functions now accept provider parameter
• • Maintains separate caches for each provider

Full OpenAI API integration with feature parity

• • Implemented fetchTTSAudio using OpenAI TTS-1 model with "alloy" voice
• • Implemented fetchWordAnnotation using GPT-4o-mini for definitions and IPA
• • Implemented analyzePronunciation using Whisper-1 for transcription + GPT-4o-mini for analysis
• • Complete localStorage caching system with separate cache space
• • Cache keys prefixed with 'vocabflow_openai_' to avoid conflicts
• • Supports up to 20 TTS entries and 500 annotation entries

Updated modal to support provider selection

• • Added provider selection buttons (Gemini / OpenAI)
• • Dynamic UI that adapts to selected provider
• • Provider-specific help text and API key acquisition links
• • Placeholder text changes based on provider
• • Saves both API key and provider preference to localStorage

Enhanced state management for provider support

• • Added provider state management
• • Loads provider preference from localStorage on mount
• • Passes provider to all child components
• • Updated warning messages to be provider-agnostic

Updated Reader to support multiple providers

• • Accepts provider prop in ReaderProps
• • All API calls (TTS, annotation, pronunciation) pass provider parameter
• • Cache clearing considers current provider
• • Seamless switching between providers

Added OpenAI SDK

• • Added openai@^6.13.0 package
• • Configured with dangerouslyAllowBrowser for client-side usage
• • [object Object]

Created comprehensive provider support documentation

• • Added PROVIDER_SUPPORT.md with detailed implementation guide
• • Documented model mappings (Gemini vs OpenAI)
• • Explained caching mechanism differences
• • Included security considerations and cost notes
• • Provided usage instructions for both providers

Code quality and maintainability enhancements

• • Abstracted provider-specific logic into separate services
• • Consistent error handling across providers
• • Type-safe provider parameter throughout the application
• • Clean separation of concerns between UI and service layers

Implemented independent history tracking for practice texts

• • Added new localStorage key 'philingo_text_history' separate from current text storage
• • Automatically saves pasted texts to history when user starts reading
• • History entries include full text, timestamp, and preview
• • Prevents duplicate entries by updating timestamp for existing texts
• • Maintains up to 50 most recent history entries
• • History excludes default placeholder text

Added history display and management features

• • Created "Your History" section showing all saved practice texts
• • Each history card displays date, preview, and word count
• • Added expandable "Show full text" feature for history items
• • Implemented individual delete button for each history entry
• • Added "Clear History" button to remove all entries
• • History section auto-hides when empty
• • Click "Practice" button to reload any historical text

Added AI-powered custom text generation feature

• • New "Generate Text" button with gradient purple design
• • Modal interface for text generation with prompt input
• • [object Object]
• • Uses Gemini 2.0 Flash API for text generation
• • Generated texts automatically saved to history
• • Auto-redirect to main app after successful generation
• • Validates API key before generation
• • Error handling with user-friendly messages
• • Loading state with animated spinner

Improved navigation between main app and explore page

• • Logo and title now link to explore page
• • Added hover effect on logo link
• • Better visual feedback for clickable elements

Enhanced default text and about page content

• • Replaced default text with SEO-optimized project introduction
• • Added comprehensive feature descriptions for better discoverability
• • Included key learning benefits and usage instructions
• • Added "The Story Behind Philingo" section to about page
• • Story honors English teacher Phil and explains project inspiration
• • Describes evolution from personal tool to full platform
• • Reorganized about page with support section at top

Unified mode naming convention to use verb forms

• • Renamed 'reading' to 'read' for consistency
• • Renamed 'test' to 'pronounce' for clarity
• • Renamed 'writing' to 'write' for consistency
• • All modes now use verb infinitive form (read, listen, pronounce, write)

Updated all mode references and UI labels

• • Updated mode button labels to match new names
• • Updated mode tooltips and hints
• • Improved mode-related comments

Updated mode checks for pronunciation practice

• • Updated mode comparisons to use new names
• • Improved code comments for clarity

Added motivational quote to main interface

• • Integrated motivational quote to enhance user engagement
• • Improved overall user interface experience

Enhanced API key configuration interface

• • Improved modal design and functionality
• • Better user experience for API key management

Refined writing mode UI and interactions

• • Enhanced layout and component structure
• • Improved user feedback and interaction design

Significantly improved annotation caching mechanism

• • Implemented robust annotation caching system
• • Added cache management and optimization
• • Enhanced performance for vocabulary annotations
• • Reduced API calls through intelligent caching

Enhanced word mastery tracking

• • Improved mastery level calculation
• • Better data persistence and management

Created new writing mode for vocabulary practice

• • Implemented interactive fill-in-the-blank exercises
• • Added word mastery tracking system
• • Created engaging writing practice interface
• • Integrated with vocabulary learning workflow

Enhanced reader with writing mode integration

• • Added mode switching between reading and writing
• • Improved component structure for mode handling
• • Enhanced user interaction flow

Enhanced feedback panel functionality

• • Improved feedback display and interaction
• • Better integration with learning modes

Implemented comprehensive word mastery tracking system

• • Created mastery level calculation algorithm
• • Added progress tracking and persistence
• • Implemented word selection for practice
• • Enhanced learning analytics

Extended type definitions for writing mode

• • Added new types for writing mode functionality
• • Improved type safety across components

Implemented automated about page generation

• • Created script to generate HTML about page from YAML changelog
• • Automated documentation generation process
• • Enhanced project documentation

Implemented audio recording with Voice Activity Detection

• • Created audio recording service with VAD technology
• • Implemented automatic silence detection
• • Added recording session management
• • Enhanced audio input handling

Significant enhancements to reader functionality

• • Improved reading interface and interactions
• • Enhanced component structure
• • Better user experience

Enhanced feedback panel with new features

• • Improved feedback collection and display
• • Better user interaction design

Major service improvements and optimizations

• • Enhanced API integration
• • Improved service reliability
• • Better error handling

Added new project dependencies

• • Added required packages for new features
• • Updated dependency configurations

Added auto-play and repeat modes for better listening experience

• • Implemented auto-play functionality for continuous playback
• • Added repeat mode for vocabulary reinforcement
• • Updated interaction modes to 'reading' and 'listen'

Enhanced interaction modes and hover functionality

• • Updated interaction modes to 'reading' and 'listen'
• • Added hover functionality specifically for listen mode
• • Improved user interaction feedback

Implemented TTS audio caching and format conversion

• • Added TTS audio caching mechanism for performance optimization
• • Implemented PCM to WAV conversion for improved audio playback
• • Enhanced audio quality and playback reliability

Added local settings configuration

• • Added local settings configuration for development environment
• • Improved developer experience

Refactored code structure for improved readability and maintainability

• • Reorganized component structure
• • Improved code modularity
• • Enhanced maintainability
• • Better separation of concerns

Persist input text to localStorage for data retention

• • Added localStorage integration
• • Implemented automatic text saving
• • Enhanced user experience with data persistence
• • Prevented data loss on page refresh

Initialize Philingo English Reader project

• • Created React + TypeScript + Vite application
• • Implemented basic reading interface
• • Integrated Gemini API for AI capabilities
• • Set up TTS (Text-to-Speech) service
• • Created vocabulary word components
• • Implemented annotation badge system
• • Added API key configuration modal
• • Set up reader component with text rendering

Initial commit

• • Created GitHub repository
• • Set up initial project structure