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"""
API routes for crossword puzzle generator.
Matches the existing JavaScript API for frontend compatibility.
"""
import logging
from typing import List, Dict, Any, Optional
from datetime import datetime
from fastapi import APIRouter, HTTPException, Request, Depends
from pydantic import BaseModel, Field
from ..services.crossword_generator_wrapper import CrosswordGenerator
logger = logging.getLogger(__name__)
router = APIRouter()
# Request/Response models
class GeneratePuzzleRequest(BaseModel):
topics: List[str] = Field(..., description="List of topics for the puzzle")
difficulty: str = Field(default="medium", description="Difficulty level: easy, medium, hard")
customSentence: Optional[str] = Field(default=None, description="Optional custom sentence to influence word selection")
multiTheme: bool = Field(default=True, description="Whether to use multi-theme processing or single-theme blending")
wordCount: Optional[int] = Field(default=10, description="Number of words to include in the crossword (8-15)")
similarityTemperature: Optional[float] = Field(default=None, description="Override similarity temperature for word selection randomness (0.1-2.0)")
difficultyWeight: Optional[float] = Field(default=None, description="Override difficulty weight for similarity vs frequency balance (0.0-1.0)")
class WordInfo(BaseModel):
word: str
clue: str
similarity: Optional[float] = None
source: Optional[str] = None
class ClueInfo(BaseModel):
number: int
word: str
text: str
direction: str # "across" or "down"
position: Dict[str, int] # {"row": int, "col": int}
class PuzzleMetadata(BaseModel):
topics: List[str]
difficulty: str
wordCount: int
size: int
aiGenerated: bool
class PuzzleResponse(BaseModel):
grid: List[List[str]]
clues: List[ClueInfo]
metadata: PuzzleMetadata
debug: Optional[Dict[str, Any]] = None
class TopicInfo(BaseModel):
id: str
name: str
# Global crossword generator instance (will be initialized in lifespan)
generator = None
def get_crossword_generator(request: Request) -> CrosswordGenerator:
"""Dependency to get the crossword generator with thematic service."""
global generator
if generator is None:
thematic_service = getattr(request.app.state, 'thematic_service', None)
generator = CrosswordGenerator(thematic_service)
return generator
@router.get("/topics", response_model=List[TopicInfo])
async def get_topics():
"""Get available topics for puzzle generation."""
# Return expanded topic list for better user variety
topics = [
{"id": "animals", "name": "Animals"},
{"id": "geography", "name": "Geography"},
{"id": "science", "name": "Science"},
{"id": "technology", "name": "Technology"},
{"id": "sports", "name": "Sports"},
{"id": "history", "name": "History"},
{"id": "food", "name": "Food"},
{"id": "entertainment", "name": "Entertainment"},
{"id": "nature", "name": "Nature"},
{"id": "transportation", "name": "Transportation"},
{"id": "art", "name": "Art"},
{"id": "medicine", "name": "Medicine"},
{"id": "philosophy", "name": "Philosophy"},
{"id": "music", "name": "Music"},
{"id": "books", "name": "Books"},
{"id": "movies", "name": "Movies"},
{"id": "appliances", "name": "Appliances"},
{"id": "culture", "name": "Culture"},
{"id": "cuisine", "name": "Cuisine"},
{"id": "languages", "name": "Languages"},
{"id": "relations", "name": "Relations"},
{"id": "space", "name": "Space"},
{"id": "universe", "name": "Universe"},
{"id": "meditation", "name": "Meditation"}
]
return topics
@router.post("/generate", response_model=PuzzleResponse)
async def generate_puzzle(
request: GeneratePuzzleRequest,
crossword_gen: CrosswordGenerator = Depends(get_crossword_generator)
):
"""
Generate a crossword puzzle with AI thematic word generation.
This endpoint matches the JavaScript API exactly for frontend compatibility.
"""
try:
sentence_info = f", custom sentence: '{request.customSentence}'" if request.customSentence else ""
theme_mode = "multi-theme" if request.multiTheme else "single-theme"
logger.info(f"🎯 Generating puzzle for topics: {request.topics}, difficulty: {request.difficulty}{sentence_info}, mode: {theme_mode}")
# Validate topics - require either topics or custom sentence
if not request.topics and not (request.customSentence and request.customSentence.strip()):
raise HTTPException(status_code=400, detail="At least one topic or a custom sentence is required")
valid_difficulties = ["easy", "medium", "hard"]
if request.difficulty not in valid_difficulties:
raise HTTPException(
status_code=400,
detail=f"Invalid difficulty. Must be one of: {valid_difficulties}"
)
# Validate word count
if request.wordCount and (request.wordCount < 8 or request.wordCount > 15):
raise HTTPException(
status_code=400,
detail="Word count must be between 8 and 15"
)
# Generate puzzle with optional parameter overrides
advanced_params = {}
if request.similarityTemperature is not None:
advanced_params['similarity_temperature'] = request.similarityTemperature
if request.difficultyWeight is not None:
advanced_params['difficulty_weight'] = request.difficultyWeight
puzzle_data = await crossword_gen.generate_puzzle(
topics=request.topics,
difficulty=request.difficulty,
custom_sentence=request.customSentence,
multi_theme=request.multiTheme,
requested_words=request.wordCount,
advanced_params=advanced_params
)
if not puzzle_data:
raise HTTPException(status_code=500, detail="Failed to generate puzzle")
logger.info(f"✅ Generated puzzle with {puzzle_data['metadata']['wordCount']} words")
return puzzle_data
except HTTPException:
raise
except Exception as e:
logger.error(f"❌ Error generating puzzle: {e}")
raise HTTPException(status_code=500, detail=str(e))
@router.post("/words")
async def generate_words(
request: GeneratePuzzleRequest,
crossword_gen: CrosswordGenerator = Depends(get_crossword_generator)
):
"""
Generate words for given topics (debug endpoint).
This endpoint allows testing word generation without full puzzle creation.
"""
try:
words = await crossword_gen.generate_words_for_topics(
topics=request.topics,
difficulty=request.difficulty
)
return {
"topics": request.topics,
"difficulty": request.difficulty,
"wordCount": len(words),
"words": words
}
except Exception as e:
logger.error(f"❌ Error generating words: {e}")
raise HTTPException(status_code=500, detail=str(e))
@router.get("/health")
async def api_health(request: Request):
"""API health check with cache status."""
thematic_service = getattr(request.app.state, 'thematic_service', None)
health_info = {
"status": "healthy",
"timestamp": datetime.utcnow().isoformat(),
"backend": "python",
"version": "2.0.0",
"thematic_service": {
"available": thematic_service is not None,
"initialized": thematic_service.is_initialized if thematic_service else False
}
}
# Add cache status if service is available
if thematic_service:
try:
cache_status = thematic_service.get_cache_status()
health_info["cache"] = cache_status
except Exception as e:
health_info["cache"] = {"error": str(e)}
return health_info
@router.get("/health/cache")
async def cache_health(request: Request):
"""Detailed cache health check and status."""
thematic_service = getattr(request.app.state, 'thematic_service', None)
if not thematic_service:
return {"error": "Thematic service not available"}
try:
cache_status = thematic_service.get_cache_status()
# Add additional diagnostic information
import os
cache_dir = cache_status['cache_directory']
diagnostics = {
"cache_status": cache_status,
"diagnostics": {
"cache_dir_exists": os.path.exists(cache_dir),
"cache_dir_readable": os.access(cache_dir, os.R_OK) if os.path.exists(cache_dir) else False,
"cache_dir_writable": os.access(cache_dir, os.W_OK) if os.path.exists(cache_dir) else False,
"service_initialized": thematic_service.is_initialized,
"vocab_size_limit": thematic_service.vocab_size_limit,
"model_name": thematic_service.model_name
}
}
# Add file listing if directory exists
if os.path.exists(cache_dir):
try:
cache_files = []
for file in os.listdir(cache_dir):
file_path = os.path.join(cache_dir, file)
if os.path.isfile(file_path):
stat = os.stat(file_path)
cache_files.append({
"name": file,
"size_bytes": stat.st_size,
"size_mb": round(stat.st_size / (1024 * 1024), 2),
"modified": datetime.fromtimestamp(stat.st_mtime).isoformat()
})
diagnostics["cache_files"] = cache_files
except Exception as e:
diagnostics["cache_files_error"] = str(e)
return diagnostics
except Exception as e:
return {"error": f"Failed to get cache status: {e}"}
@router.post("/health/cache/reinitialize")
async def reinitialize_cache(request: Request):
"""Force re-initialization of the thematic service and cache creation."""
thematic_service = getattr(request.app.state, 'thematic_service', None)
if not thematic_service:
return {"error": "Thematic service not available"}
try:
# Reset initialization flag to force re-initialization
thematic_service.is_initialized = False
# Force re-initialization
await thematic_service.initialize_async()
# Get updated cache status
cache_status = thematic_service.get_cache_status()
return {
"message": "Cache re-initialization completed",
"cache_status": cache_status,
"timestamp": datetime.utcnow().isoformat()
}
except Exception as e:
import traceback
return {
"error": f"Failed to reinitialize cache: {e}",
"traceback": traceback.format_exc(),
"timestamp": datetime.utcnow().isoformat()
}
@router.get("/debug/thematic-search")
async def debug_thematic_search(
topic: str,
difficulty: str = "medium",
max_words: int = 10,
request: Request = None
):
"""
Debug endpoint to test thematic word generation directly.
"""
try:
thematic_service = getattr(request.app.state, 'thematic_service', None)
if not thematic_service or not thematic_service.is_initialized:
raise HTTPException(status_code=503, detail="Thematic service not available")
result = await thematic_service.find_words_for_crossword([topic], difficulty, max_words)
words = result["words"]
response = {
"topic": topic,
"difficulty": difficulty,
"max_words": max_words,
"found_words": len(words),
"words": words
}
# Include debug data if available
if "debug" in result:
response["debug"] = result["debug"]
return response
except Exception as e:
logger.error(f"❌ Thematic search debug failed: {e}")
raise HTTPException(status_code=500, detail=str(e)) |