from fastapi import APIRouter, Depends, HTTPException, status, UploadFile, File, Form
from sqlalchemy.orm import Session
from typing import List, Optional

from database import get_db
from models.product_certification import ProductCertification
from models.user import User
from schemas.product import (
    ProductCertificationResponse, 
    ProductCertificationCreate, 
    ProductCertificationUpdate
)
from routers.auth import get_current_user
from routers.product_utils import validate_product_exists, get_company_r2_config, delete_r2_and_local_files
from config.certification_types import DEFAULT_CERTIFICATION_TYPES

# 导入日志模块
from utils.logger import logger

router = APIRouter()


@router.get("/certification-types")
async def get_certification_types():
    """获取商品认证类型列表"""
    logger.info("获取商品认证类型列表")
    return DEFAULT_CERTIFICATION_TYPES


@router.get("/{product_number}/certifications", response_model=List[ProductCertificationResponse])
async def read_product_certifications(
    product_number: str,
    current_user: User = Depends(get_current_user),
    db: Session = Depends(get_db)
):
    """获取商品认证列表"""
    logger.info(f"获取商品认证列表 - product_number: {product_number}, user: {current_user.username}")
    from routers.auth import is_admin_user
    
    query = db.query(ProductCertification).filter(ProductCertification.product_number == product_number)
    
    if not is_admin_user(current_user):
        query = query.filter(ProductCertification.company_code == current_user.company_code)
    
    certifications = query.all()
    logger.info(f"获取商品认证列表成功 - product_number: {product_number}, 共 {len(certifications)} 个认证")
    return certifications


@router.post("/{product_number}/certifications", response_model=ProductCertificationResponse, status_code=status.HTTP_201_CREATED)
async def create_product_certification(
    product_number: str,
    certification_type: str = Form(...),
    file_url: str = Form(...),
    thumbnail_url: Optional[str] = Form(None),
    media_id: str = Form(...),
    current_user: User = Depends(get_current_user),
    db: Session = Depends(get_db)
):
    """创建商品认证（通过素材选择器方式）"""
    logger.info(f"创建商品认证 - product_number: {product_number}, certification_type: {certification_type}, user: {current_user.username}")
    product = validate_product_exists(product_number, current_user, db)
    
    cert_data = {
        'product_number': product_number,
        'product_id': product.id,
        'company_code': current_user.company_code,
        'certification_type': certification_type,
        'r2_url': file_url,
        'thumbnail_r2_url': thumbnail_url or file_url,
        'media_id': media_id
    }
    
    cert = ProductCertification(**cert_data)
    db.add(cert)
    db.commit()
    db.refresh(cert)
    
    logger.info(f"创建商品认证成功 - certification_id: {cert.id}, product_number: {product_number}")
    return cert


@router.post("/{product_number}/certifications/batch", response_model=List[ProductCertificationResponse], status_code=status.HTTP_201_CREATED)
async def batch_create_product_certification(
    product_number: str,
    cert_items: List[dict],
    current_user: User = Depends(get_current_user),
    db: Session = Depends(get_db)
):
    """批量创建商品认证"""
    logger.info(f"批量创建商品认证 - product_number: {product_number}, 数量: {len(cert_items)}, user: {current_user.username}")
    product = validate_product_exists(product_number, current_user, db)
    
    created_certs = []
    for item in cert_items:
        cert_data = {
            'product_number': product_number,
            'product_id': product.id,
            'company_code': current_user.company_code,
            'certification_type': item.get('certification_type'),
            'r2_url': item.get('file_url'),
            'thumbnail_r2_url': item.get('thumbnail_url') or item.get('file_url'),
            'media_id': item.get('media_id')
        }
        
        cert = ProductCertification(**cert_data)
        db.add(cert)
        created_certs.append(cert)
    
    db.commit()
    for cert in created_certs:
        db.refresh(cert)
    
    logger.info(f"批量创建商品认证成功 - product_number: {product_number}, 成功创建 {len(created_certs)} 个认证")
    return created_certs


@router.put("/certifications/{certification_id}", response_model=ProductCertificationResponse)
async def update_product_certification(
    certification_id: int,
    cert_update: ProductCertificationUpdate,
    current_user: User = Depends(get_current_user),
    db: Session = Depends(get_db)
):
    """更新商品认证"""
    logger.info(f"更新商品认证 - certification_id: {certification_id}, user: {current_user.username}")
    from routers.auth import is_admin_user
    
    query = db.query(ProductCertification).filter(ProductCertification.id == certification_id)
    
    if not is_admin_user(current_user):
        query = query.filter(ProductCertification.company_code == current_user.company_code)
    
    certification = query.first()
    if certification is None:
        logger.error(f"认证不存在 - certification_id: {certification_id}")
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Certification not found")
    update_data = cert_update.model_dump(exclude_unset=True)
    for field, value in update_data.items():
        setattr(certification, field, value)
    db.commit()
    db.refresh(certification)
    logger.info(f"更新商品认证成功 - certification_id: {certification_id}")
    return certification


@router.delete("/certifications/{certification_id}", status_code=status.HTTP_204_NO_CONTENT)
async def delete_product_certification(
    certification_id: int,
    current_user: User = Depends(get_current_user),
    db: Session = Depends(get_db)
):
    """删除商品认证"""
    logger.info(f"删除商品认证 - certification_id: {certification_id}, user: {current_user.username}")
    from routers.auth import is_admin_user
    
    query = db.query(ProductCertification).filter(ProductCertification.id == certification_id)
    
    if not is_admin_user(current_user):
        query = query.filter(ProductCertification.company_code == current_user.company_code)
    
    certification = query.first()
    if certification is None:
        logger.error(f"认证不存在 - certification_id: {certification_id}")
        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Certification not found")
    
    db.delete(certification)
    db.commit()
    logger.info(f"删除商品认证成功 - certification_id: {certification_id}")
    return None