"""
AI Workflows Routes - Alias routes for /api/ai-workflows/* paths
Provides compatibility with various API path conventions
"""
from datetime import datetime
import logging
from typing import Any, Dict, List, Optional
from pydantic import BaseModel, Field

from core.base_routes import BaseAPIRouter

logger = logging.getLogger(__name__)


router = BaseAPIRouter(prefix="/api/ai-workflows", tags=["AI Workflows"])

# Pydantic Models
class NLUParseRequest(BaseModel):
    text: str = Field(..., description="Text to parse")
    provider: str = Field("deepseek", description="AI provider to use")
    intent_only: bool = Field(False, description="Only extract intent")

class NLUParseResponse(BaseModel):
    request_id: str
    text: str
    intent: str
    entities: List[Dict[str, Any]]
    tasks: List[str]
    confidence: float
    provider_used: str
    processing_time_ms: float

class CompletionRequest(BaseModel):
    prompt: str = Field(..., description="Prompt for completion")
    provider: str = Field("deepseek", description="AI provider to use")
    max_tokens: int = Field(500, description="Maximum tokens in response")
    temperature: float = Field(0.7, description="Temperature for sampling")

class CompletionResponse(BaseModel):
    completion: str
    provider_used: str
    tokens_used: int
    processing_time_ms: float

@router.post("/nlu/parse", response_model=NLUParseResponse)
async def parse_nlu(request: NLUParseRequest):
    """
    Parse natural language to extract intent, entities, and tasks.
    This is the main NLU endpoint for the agent runtime.
    """
    import time
    start_time = time.time()
    
    try:
        # Try to use the real AI service
        from enhanced_ai_workflow_endpoints import ai_service
        
        nlu_result = await ai_service.process_with_nlu(
            request.text, 
            request.provider
        )
        
        processing_time = (time.time() - start_time) * 1000
        
        return NLUParseResponse(
            request_id=f"nlu_{datetime.now().strftime('%Y%m%d_%H%M%S')}",
            text=request.text,
            intent=nlu_result.get('intent', 'unknown'),
            entities=nlu_result.get('entities', []) if isinstance(nlu_result.get('entities'), list) else [],
            tasks=nlu_result.get('tasks', []),
            confidence=nlu_result.get('confidence', 0.85),
            provider_used=nlu_result.get('ai_provider_used', request.provider),
            processing_time_ms=processing_time
        )
        
    except Exception as e:
        logger.warning(f"Real NLU failed, using fallback: {e}")
        
        # Fallback NLU with simple pattern matching
        processing_time = (time.time() - start_time) * 1000
        text_lower = request.text.lower()
        
        # Simple intent classification
        intent = "general"
        if "schedule" in text_lower or "meeting" in text_lower:
            intent = "scheduling"
        elif "send" in text_lower or "email" in text_lower:
            intent = "communication"
        elif "create" in text_lower or "add" in text_lower:
            intent = "creation"
        elif "search" in text_lower or "find" in text_lower:
            intent = "search"
        elif "workflow" in text_lower or "automate" in text_lower:
            intent = "workflow_creation"
        
        # Simple entity extraction
        entities = []
        words = request.text.split()
        for i, word in enumerate(words):
            if "@" in word:
                entities.append({"type": "email", "value": word})
            if word.isdigit():
                entities.append({"type": "number", "value": word})
        
        return NLUParseResponse(
            request_id=f"nlu_{datetime.now().strftime('%Y%m%d_%H%M%S')}",
            text=request.text,
            intent=intent,
            entities=entities,
            tasks=[f"Process: {request.text[:100]}"],
            confidence=0.7,
            provider_used="fallback",
            processing_time_ms=processing_time
        )

@router.get("/providers")
async def get_providers():
    """Get available AI providers"""
    try:
        from enhanced_ai_workflow_endpoints import ai_service
        
        providers = []
        if ai_service.openai_api_key:
            providers.append({"id": "openai", "name": "OpenAI GPT-4", "enabled": True})
        if ai_service.anthropic_api_key:
            providers.append({"id": "anthropic", "name": "Anthropic Claude", "enabled": True})
        if ai_service.deepseek_api_key:
            providers.append({"id": "deepseek", "name": "DeepSeek Chat", "enabled": True})
        if ai_service.google_api_key:
            providers.append({"id": "google", "name": "Google Gemini", "enabled": True})
        
        return {
            "providers": providers,
            "default": "deepseek" if ai_service.deepseek_api_key else "openai",
            "count": len(providers)
        }
    except Exception as e:
        return {
            "providers": [
                {"id": "openai", "name": "OpenAI GPT-4", "enabled": False},
                {"id": "anthropic", "name": "Anthropic Claude", "enabled": False},
                {"id": "deepseek", "name": "DeepSeek Chat", "enabled": False},
            ],
            "default": "openai",
            "count": 0
        }

@router.post("/complete", response_model=CompletionResponse)
async def complete_text(request: CompletionRequest):
    """
    Generate text completion using configured AI provider.
    """
    import time
    start_time = time.time()
    
    try:
        from enhanced_ai_workflow_endpoints import ai_service
        
        result = await ai_service.analyze_text(
            request.prompt,
            complexity=2,
            system_prompt="You are a helpful AI assistant."
        )
        
        processing_time = (time.time() - start_time) * 1000
        
        return CompletionResponse(
            completion=result,
            provider_used=request.provider,
            tokens_used=len(result.split()) * 2,  # Rough estimate
            processing_time_ms=processing_time
        )
        
    except Exception as e:
        logger.error(f"Completion failed: {e}")
        processing_time = (time.time() - start_time) * 1000
        
        return CompletionResponse(
            completion=f"[Completion unavailable: {str(e)[:100]}]",
            provider_used="error",
            tokens_used=0,
            processing_time_ms=processing_time
        )