Add initial files for Audio Dashboard Management System

- Created .env.example for environment variable configuration.
- Added docker-compose.yml for service orchestration.
- Implemented frequency response extraction in extract_frequency_response.py and convert_to_frequency_db.py.
- Generated output files: frequency_response_detailed.json, frequency_response_points.json, frequency_response.csv, and frequency_response_curve.png.
- Included sample measurement data for FiiO FA19 in CSV format.

backend/routes/brands.py

@@ -1,11 +1,15 @@
 from fastapi import APIRouter, Depends, HTTPException, Query
 from sqlalchemy.orm import Session
 from typing import List, Optional
+import logging
 from database import get_db
 from models.brand import Brand
 from schemas import BrandCreate, BrandUpdate, BrandResponse
 from response import ApiResponse, PageData
 
+# Configure logging
+logger = logging.getLogger(__name__)
+
 router = APIRouter(prefix="/api/brands", tags=["brands"])
 
 
@@ -18,6 +22,7 @@ def get_brands(
 ):
     """获取所有品牌列表（支持按名称模糊查询）"""
     try:
+        logger.info(f"Getting brands: skip={skip}, limit={limit}, name={name}")
         query = db.query(Brand)
         if name:
             query = query.filter(Brand.name.like(f"%{name}%"))
@@ -25,7 +30,10 @@ def get_brands(
         total = query.count()
         brands = query.offset(skip).limit(limit).all()
         
+        logger.info(f"Found {len(brands)} brands, total={total}")
+        
         if not brands:
+            logger.warning("No brands found")
             return ApiResponse(code=2, msg="empty", data=None)
         
         # 转换为字典列表
@@ -33,6 +41,7 @@ def get_brands(
         
         return ApiResponse(code=1, msg="success", data={"items": brands_data, "total": total, "skip": skip, "limit": limit})
     except Exception as e:
+        logger.error(f"Error getting brands: {str(e)}", exc_info=True)
         return ApiResponse(code=0, msg="error", data=None)
 
 
@@ -40,11 +49,15 @@ def get_brands(
 def get_brand(brand_id: int, db: Session = Depends(get_db)):
     """获取单个品牌"""
     try:
+        logger.info(f"Getting brand: id={brand_id}")
         brand = db.query(Brand).filter(Brand.id == brand_id).first()
         if not brand:
+            logger.warning(f"Brand not found: id={brand_id}")
             return ApiResponse(code=2, msg="empty", data=None)
+        logger.info(f"Brand found: {brand.to_dict()}")
         return ApiResponse(code=1, msg="success", data=brand.to_dict())
     except Exception as e:
+        logger.error(f"Error getting brand {brand_id}: {str(e)}", exc_info=True)
         return ApiResponse(code=0, msg="error", data=None)
 
 
@@ -52,17 +65,21 @@ def get_brand(brand_id: int, db: Session = Depends(get_db)):
 def create_brand(brand: BrandCreate, db: Session = Depends(get_db)):
     """创建新品牌"""
     try:
+        logger.info(f"Creating brand: name={brand.name}")
         # 检查是否已存在
         existing = db.query(Brand).filter(Brand.name == brand.name).first()
         if existing:
+            logger.warning(f"Brand already exists: name={brand.name}")
             return ApiResponse.error(msg="品牌名称已存在", code=0)
         
         db_brand = Brand(name=brand.name)
         db.add(db_brand)
         db.commit()
         db.refresh(db_brand)
+        logger.info(f"Brand created successfully: id={db_brand.id}, name={db_brand.name}")
         return ApiResponse.success(data=db_brand.to_dict(), msg="品牌创建成功")
     except Exception as e:
+        logger.error(f"Error creating brand: {str(e)}", exc_info=True)
         db.rollback()
         return ApiResponse.error(msg=f"创建失败：{str(e)}", code=0)
 
@@ -71,21 +88,26 @@ def create_brand(brand: BrandCreate, db: Session = Depends(get_db)):
 def update_brand(brand_id: int, brand: BrandUpdate, db: Session = Depends(get_db)):
     """更新品牌"""
     try:
+        logger.info(f"Updating brand: id={brand_id}, data={brand.dict()}")
         db_brand = db.query(Brand).filter(Brand.id == brand_id).first()
         if not db_brand:
+            logger.warning(f"Brand not found: id={brand_id}")
             return ApiResponse.no_data(msg="品牌不存在")
         
         # 如果更新名称，检查是否冲突
         if brand.name and brand.name != db_brand.name:
             existing = db.query(Brand).filter(Brand.name == brand.name).first()
             if existing:
+                logger.warning(f"Brand name already exists: name={brand.name}")
                 return ApiResponse.error(msg="品牌名称已存在", code=0)
             db_brand.name = brand.name
         
         db.commit()
         db.refresh(db_brand)
+        logger.info(f"Brand updated successfully: id={db_brand.id}")
         return ApiResponse.success(data=db_brand.to_dict(), msg="品牌更新成功")
     except Exception as e:
+        logger.error(f"Error updating brand {brand_id}: {str(e)}", exc_info=True)
         db.rollback()
         return ApiResponse.error(msg=f"更新失败：{str(e)}", code=0)
 
@@ -94,13 +116,17 @@ def update_brand(brand_id: int, brand: BrandUpdate, db: Session = Depends(get_db
 def delete_brand(brand_id: int, db: Session = Depends(get_db)):
     """删除品牌"""
     try:
+        logger.info(f"Deleting brand: id={brand_id}")
         db_brand = db.query(Brand).filter(Brand.id == brand_id).first()
         if not db_brand:
+            logger.warning(f"Brand not found: id={brand_id}")
             return ApiResponse.no_data(msg="品牌不存在")
         
         db.delete(db_brand)
         db.commit()
+        logger.info(f"Brand deleted successfully: id={brand_id}")
         return ApiResponse.success(msg="删除成功")
     except Exception as e:
+        logger.error(f"Error deleting brand {brand_id}: {str(e)}", exc_info=True)
         db.rollback()
         return ApiResponse.error(msg=f"删除失败：{str(e)}", code=0)