# Sentimatrix V2 - Implementation Order

## Recommended Implementation Sequence

This document defines the order in which components should be implemented to minimize blockers and enable incremental testing.

---

## Stage 1: Foundation (COMPLETED)

### 1.1 Project Setup
```
[x] Create pyproject.toml with dependencies
[x] Setup directory structure
[x] Configure development tools (ruff, black, mypy)
[x] Create .gitignore
[x] Initialize git repository
```

### 1.2 Core Configuration
```
[x] Define Pydantic config models (core/config.py)
[x] Implement YAML loading
[x] Implement environment variable support
[x] Add config validation
[x] Write unit tests
```

### 1.3 Logging System
```
[x] Create structured logger (core/logger.py)
[x] Add console and file handlers
[x] Implement log levels
[x] Add context propagation
```

### 1.4 Exception Hierarchy
```
[x] Define base exceptions (core/exceptions.py)
[x] Create provider-specific exceptions
[x] Add error codes and messages
```

### 1.5 Cache Layer
```
[x] Implement memory cache (core/cache.py)
[x] Add TTL support
[x] Implement LRU eviction
[x] Add cache statistics
[x] Write unit tests
```

---

## Stage 2: Provider Framework (COMPLETED)

### 2.1 Base Provider Interfaces
```
[x] Define BaseLLMProvider abstract class
[x] Define BaseScraperProvider abstract class
[x] Define BaseModelProvider abstract class
[x] Define provider factory pattern
```

### 2.2 Provider Registry
```
[x] Implement provider registration
[x] Add provider discovery
[x] Create get_provider() function
```

---

## Stage 3: Sentiment Analysis Core (COMPLETED)

### 3.1 Model Provider
```
[x] Implement HuggingFace model loading
[x] Add device management (CPU/GPU/MPS auto-detection)
[x] Implement inference pipeline
[x] Add batch processing
```

### 3.2 Quick Sentiment
```
[x] Implement analyze_sentiment()
[x] Implement analyze_sentiment_batch()
[x] Add confidence scoring
[x] Write tests (95 test cases)
```

### 3.3 Emotion Detection
```
[x] Implement detect_emotions()
[x] Add top-k selection
[x] Add threshold filtering
[x] Add multi-label classification
[x] Add Ekman emotion mapping
[x] Write tests (54 test cases)
```

---

## Stage 4: LLM Providers (COMPLETED)

### 4.1 OpenAI Provider (Reference Implementation)
```
[x] Implement generate()
[x] Implement generate_stream()
[x] Implement generate_with_functions()
[x] Implement embed()
[x] Add error handling
[x] Write tests (21 test cases)
```

### 4.2 Groq Provider
```
[x] Implement generate() (OpenAI-compatible API)
[x] Implement generate_stream()
[x] Implement generate_with_functions()
[x] Add audio transcription (Whisper)
[x] Write tests (16 test cases)
```

### 4.3 Anthropic Provider
```
[x] Implement with Anthropic SDK
[x] Handle message format differences
[x] Implement generate_with_vision()
[x] Write tests
```

### 4.4 Ollama Provider
```
[x] Implement HTTP-based client
[x] Implement generate() and chat()
[x] Add streaming support
[x] Implement embed()
[x] Add pull_model() and list_models()
[x] Handle connection errors
[x] Write tests
```

### 4.5 Google Gemini Provider
```
[x] Implement generate()
[x] Implement generate_stream()
[x] Implement generate_with_functions()
[x] Implement generate_with_vision()
[x] Implement embed()
[x] Write tests
```

### 4.6 Provider Manager
```
[x] Implement fallback chain
[x] Add provider selection logic
[x] Implement health tracking
[x] Add multiple fallback strategies (sequential, round-robin, fastest, cheapest)
[x] Write tests (22 test cases)
```

**Total LLM Provider Tests:** 59 test cases

---

## Stage 5: Scraping Infrastructure (COMPLETED)

### 5.1 Rate Limiter
```
[x] Implement token bucket algorithm
[x] Implement fixed window algorithm
[x] Implement sliding window algorithm
[x] Add per-domain limiting
[x] Add 429 cooldown handling
[x] Add statistics tracking
[x] Write tests (35 test cases)
```

### 5.2 Scraper Utilities
```
[x] Implement ProxyManager with health tracking
[x] Add rotation strategies (round-robin, random, least-used, weighted, sticky)
[x] Implement UserAgentRotator (desktop/mobile)
[x] Implement RetryHandler with exponential backoff
[x] Add utility functions (extract_domain, normalize_url, parse_cookies)
[x] Write tests (44 test cases)
```

### 5.3 HTTP Scraper (HTTPX)
```
[x] Implement HTTPX async client
[x] Add headers and user-agent rotation
[x] Implement retry logic with backoff
[x] Add rate limiting integration
[x] Add proxy support
[x] Add cookie management
[x] Implement batch URL scraping
[x] Write tests (16 test cases)
```

### 5.4 Playwright Scraper
```
[x] Implement browser management (Chromium, Firefox, WebKit)
[x] Add page navigation with wait strategies
[x] Implement stealth mode for anti-detection
[x] Add screenshot capability
[x] Add PDF generation
[x] Add page actions (click, type, scroll, wait)
[x] Add rate limiting integration
[x] Add cookie management
[x] Write tests (20 test cases)
```

**Total Stage 5 Tests:** 115 test cases

---

## Stage 6: Platform Scrapers (COMPLETED)

### 6.1 Base Platform Scraper
```
[x] Define common interface (BasePlatformScraper)
[x] Add URL validation helpers
[x] Implement review extraction helpers
[x] Add rating normalization and date parsing
[x] Add review ID generation
[x] Write tests (14 test cases)
```

### 6.2 Amazon Scraper
```
[x] Implement ASIN validation and extraction
[x] Implement review extraction with Playwright
[x] Handle pagination
[x] Parse ratings, dates, verified purchases
[x] Add product info and search
[x] Write tests (23 test cases)
```

### 6.3 Steam Scraper
```
[x] Implement Steam Reviews API client
[x] Extract reviews with playtime info
[x] Add game info and search via Store API
[x] Implement review summary
[x] Write tests (17 test cases)
```

### 6.4 YouTube Scraper
```
[x] Implement YouTube Data API v3 client
[x] Extract comments and replies
[x] Add video info extraction
[x] Implement transcript extraction (youtube-transcript-api)
[x] Add video search
[x] Write tests (23 test cases)
```

### 6.5 Reddit Scraper
```
[x] Implement Reddit JSON API client
[x] Extract posts and comments
[x] Add subreddit post fetching
[x] Implement search functionality
[x] Add subreddit info
[x] Write tests (22 test cases)
```

**Total Stage 6 Tests:** 99 test cases

### 6.6 Additional Scrapers (Planned)
```
[ ] IMDB
[ ] Yelp
[ ] Trustpilot
[ ] Twitter/X
[ ] Others...
```

---

## Stage 7: Pipeline Integration (COMPLETED)

### 7.1 Analysis Pipeline (COMPLETED - Implemented in Stage 1)
```
[x] Implement Pipeline class
[x] Add step chaining
[x] Add progress callbacks
[x] Handle errors gracefully
[x] Add parallel step execution
[x] Add conditional step execution
[x] Add retry support with backoff
[x] Add step timeout support
[x] Add lifecycle hooks
[x] Write unit tests (64 tests)
```

### 7.2 Main Sentimatrix Class (COMPLETED)
```
[x] Implement constructor
[x] Add sentiment methods (analyze_sentiment, analyze_sentiment_batch, get_quick_sentiment)
[x] Add emotion methods (detect_emotions, detect_emotions_batch, detect_ekman_emotions)
[x] Add combined analysis (analyze, analyze_reviews)
[x] Add scraping methods (scrape_amazon, scrape_steam, scrape_youtube, scrape_reddit)
[x] Add platform-specific methods (_get_*_scraper, platform detection)
[x] Integrate pipeline (run_analysis_pipeline)
[x] Write unit tests (42 tests)
```

### 7.3 LLM Integration (COMPLETED)
```
[x] Implement summarize_reviews() - Summary generation with style options
[x] Implement generate_insights() - Extracts pros, cons, recommendations, themes
[x] Add comparison logic (compare_products) - Compare reviews between products
[x] Write unit tests (included in 42 tests above)
```

**Stage 7 Test Summary:** 42 new tests, 722 total tests passing

---

## Stage 8: Output Layer (COMPLETED)

### 8.1 Data Models
```
[x] Finalize all dataclasses
[x] Add serialization methods (to_dict)
[x] Add validation
```

### 8.2 Export Functions
```
[x] Implement JSON export (JSONExporter)
[x] Implement CSV export (CSVExporter)
[x] Implement Excel export (ExcelExporter)
[x] Add convenience functions (export_to_json, export_to_csv, export_to_excel)
```

### 8.3 Formatting
```
[x] Implement HTML reports (HTMLFormatter)
[x] Implement text output (TextFormatter)
[x] Implement markdown output (MarkdownFormatter)
[x] Add theme support (light, dark, colorful)
```

### 8.4 Visualization
```
[x] Implement bar charts (sentiment, generic)
[x] Implement pie/donut charts
[x] Implement histograms
[x] Implement horizontal bar charts (emotions)
[x] Implement line charts
[x] Implement comparison charts
[x] Add save functionality (PNG, SVG, PDF)
[x] Write tests (95 test cases)
```

**Stage 8 Test Summary:** 95 new tests, 817 total tests passing

---

## Stage 9: Cache Layer (COMPLETED)

### 9.1 Memory Cache (COMPLETED - Implemented in Stage 1)
```
[x] Implement in-memory cache
[x] Add TTL support
[x] Add size limits (LRU eviction)
[x] Add cache statistics
[x] Add compression support
[x] Add @cached decorator
[x] Write unit tests (43 tests)
```

### 9.2 Redis Cache (COMPLETED)
```
[x] Implement Redis backend (RedisCache class)
[x] Add connection pooling (max_connections config)
[x] Implement async operations (get, set, delete, exists, clear)
[x] Add batch operations (get_many, set_many, delete_many)
[x] Add TTL operations (ttl, expire)
[x] Add increment operation (incr)
[x] Add health check support
[x] Add compression support
[x] Add cache statistics
[x] Write unit tests (20 tests)
```

**Stage 9 Test Summary:** 63 cache tests total (43 memory + 20 Redis)

---

## Stage 10: Multi-Modal (COMPLETED)

### 10.1 Audio Processing (COMPLETED)
```
[x] Implement Whisper integration (local and API)
[x] Add Groq Whisper support
[x] Add transcription pipeline (AudioHandler)
[x] Add TranscriptionResult dataclass
[x] Connect to sentiment (analyze_audio)
[x] Add language detection
[x] Add timestamp support
[x] Write unit tests (17 tests)
```

### 10.2 Image Processing (COMPLETED)
```
[x] Implement vision model integration (GPT-4V, Claude Vision, Gemini Vision, BLIP)
[x] Add captioning (ImageHandler)
[x] Add CaptionResult dataclass
[x] Connect to sentiment (analyze_image)
[x] Add OCR detection support
[x] Write unit tests (10 tests)
```

### 10.3 Video Processing (COMPLETED)
```
[x] Implement frame extraction (VideoHandler with OpenCV)
[x] Add VideoFrameResult dataclass
[x] Connect to sentiment (analyze_video)
[x] Add audio extraction from video
[x] Support multiple extraction modes (uniform, keyframe)
[x] Write unit tests (6 tests)
```

### 10.4 Multi-Modal Analysis (COMPLETED)
```
[x] Implement MultiModalAnalyzer class
[x] Add fusion strategies (late, weighted, dominant)
[x] Add AudioAnalysisResult, ImageAnalysisResult, VideoAnalysisResult
[x] Add MultiModalResult for combined analysis
[x] Implement analyze_multimodal for combined text/audio/image analysis
[x] Add to main Sentimatrix class
[x] Write unit tests (27 tests)
```

**Stage 10 Test Summary:** 60 multi-modal tests, 900 total tests passing

---

## Stage 11: Testing

### 11.1 Unit Tests (Phase 1-5 Complete)
```
[x] Config tests (50 tests, 98% coverage)
[x] Exception tests (44 tests, 98% coverage)
[x] Logger tests (52 tests, 87% coverage)
[x] Cache tests (43 tests, 84% coverage)
[x] Pipeline tests (64 tests, 89% coverage)
[x] Provider base tests (37 tests, 88% coverage)
[x] HuggingFace model tests (21 tests, 85% coverage)
[x] Sentiment analysis tests (40 tests, 92% coverage)
[x] Emotion detection tests (54 tests, 91% coverage)
[x] OpenAI provider tests (21 tests, 90% coverage)
[x] Groq provider tests (16 tests, 90% coverage)
[x] Provider manager tests (22 tests, 90% coverage)
[x] Rate limiter tests (35 tests, 92% coverage)
[x] Scraper utility tests (44 tests, 90% coverage)
[x] HTTPX scraper tests (16 tests, 88% coverage)
[x] Playwright scraper tests (20 tests, 85% coverage)
```

### 11.2 Integration Tests (COMPLETED)
```
[x] Pipeline integration tests
[x] Provider integration tests
[x] Scraper tests (with mocks)
```

### 11.3 E2E Tests (COMPLETED)
```
[x] Full workflow tests
[ ] Live API tests (optional)
```

**Current Status:** 938 tests passing, 91% overall coverage

---

## Stage 12: Documentation & Release (COMPLETED)

### 12.1 Documentation (COMPLETED)
```
[x] API reference (docs/api/README.md)
[x] Usage guides (docs/guides/quickstart.md, examples.md)
[x] Example code (embedded in guides)
[x] Troubleshooting (docs/guides/troubleshooting.md)
```

### 12.2 CI/CD (COMPLETED)
```
[x] GitHub Actions setup (.github/workflows/ci.yml)
[x] Test automation (unit, integration, e2e tests)
[x] Release workflow (.github/workflows/release.yml)
```

### 12.3 Release
```
[ ] Version bump
[ ] Changelog
[ ] PyPI publish
[ ] GitHub release
```

---

## Implementation Notes

### Start With
1. Config system - Everything depends on this
2. Base providers - Defines contracts
3. Quick sentiment - Core feature, easy to test
4. One LLM provider (OpenAI) - Reference implementation

### Parallelize When Possible
- Multiple LLM providers (after OpenAI is done)
- Multiple platform scrapers (after Amazon is done)
- Tests (alongside implementation)

### Defer Until Later
- Advanced cache backends
- Server mode

---

## Stage 13: CLI Interface (COMPLETED)

### 13.1 CLI Implementation
```
[x] Argument parser setup (argparse)
[x] analyze command - Single text analysis
[x] analyze-file command - Batch file processing
[x] scrape command - Platform scraping (Amazon, Steam, YouTube, Reddit)
[x] batch command - CSV batch processing
[x] info command - System information
[x] Rich terminal output support (optional)
[x] JSON/CSV output formats
[x] Write unit tests (28 test cases)
```

### 13.2 CI/CD Workflows
```
[x] GitHub Actions CI pipeline (.github/workflows/ci.yml)
[x] Release workflow (.github/workflows/release.yml)
[x] Multi-Python version testing (3.10, 3.11, 3.12)
[x] Integration tests with Redis service
[x] Security scanning (bandit, safety)
[x] PyPI publishing workflow
```

**Stage 13 Test Summary:** 28 new CLI tests
