"""
Training API endpoints
"""

from fastapi import APIRouter, Depends, HTTPException, status, Query
from sqlalchemy.ext.asyncio import AsyncSession
from typing import List, Optional
import structlog

from app.core.database import get_db
from app.core.auth import verify_token
from app.schemas.training import TrainingRequest, TrainingJobResponse, TrainedModelResponse
from app.services.training_service import TrainingService

logger = structlog.get_logger()
router = APIRouter()

training_service = TrainingService()

@router.post("/train", response_model=TrainingJobResponse)
async def start_training(
    request: TrainingRequest,
    user_data: dict = Depends(verify_token),
    db: AsyncSession = Depends(get_db)
):
    """Start training job"""
    try:
        return await training_service.start_training(request, user_data, db)
    except ValueError as e:
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail=str(e)
        )
    except Exception as e:
        logger.error(f"Training start error: {e}")
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail="Failed to start training"
        )

@router.get("/status/{job_id}", response_model=TrainingJobResponse)
async def get_training_status(
    job_id: str,
    user_data: dict = Depends(verify_token),
    db: AsyncSession = Depends(get_db)
):
    """Get training job status"""
    try:
        return await training_service.get_training_status(job_id, user_data, db)
    except ValueError as e:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail=str(e)
        )
    except Exception as e:
        logger.error(f"Get training status error: {e}")
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail="Failed to get training status"
        )

@router.get("/jobs", response_model=List[TrainingJobResponse])
async def get_training_jobs(
    limit: int = Query(10, ge=1, le=100),
    offset: int = Query(0, ge=0),
    user_data: dict = Depends(verify_token),
    db: AsyncSession = Depends(get_db)
):
    """Get training jobs"""
    try:
        return await training_service.get_training_jobs(user_data, limit, offset, db)
    except Exception as e:
        logger.error(f"Get training jobs error: {e}")
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail="Failed to get training jobs"
        )