update code level

src/image_processor.rs

@@ -3,6 +3,30 @@ use std::fs;
 use image::{GenericImageView, ImageFormat};
 use uuid::Uuid;
 use crate::config::StorageConfig;
+use thiserror::Error;
+
+#[derive(Error, Debug)]
+pub enum ImageProcessorError {
+    #[error("IO error: {0}")]
+    Io(#[from] std::io::Error),
+    #[error("Image processing error: {0}")]
+    Image(#[from] image::ImageError),
+    #[error("Invalid image data")]
+    InvalidData,
+}
+
+// 手动实现 From<reqwest::Error> 以支持 ? 操作符
+impl From<reqwest::Error> for ImageProcessorError {
+    fn from(err: reqwest::Error) -> Self {
+        ImageProcessorError::Io(std::io::Error::new(std::io::ErrorKind::Other, err.to_string()))
+    }
+}
+
+impl ImageProcessorError {
+    pub fn is_send(&self) -> bool {
+        true
+    }
+}
 
 pub struct ImageProcessor {
     pub config: StorageConfig,
@@ -17,7 +41,7 @@ impl ImageProcessor {
         Self { config }
     }
 
-    pub async fn save_image(&self, image_data: &[u8], filename: &str) -> Result<ImageInfo, Box<dyn std::error::Error>> {
+    pub async fn save_image(&self, image_data: &[u8], filename: &str) -> Result<ImageInfo, ImageProcessorError> {
         let image_id = Uuid::new_v4();
         let file_extension = Path::new(filename)
             .extension()
@@ -56,7 +80,7 @@ impl ImageProcessor {
         output_path: &Path,
         _max_width: u32,
         _max_height: u32,
-    ) -> Result<(), Box<dyn std::error::Error>> {
+    ) -> Result<(), ImageProcessorError> {
         // 使用统一的缩略图尺寸（400x300，保持宽高比）
         let thumbnail = img.thumbnail(400, 300);
         
@@ -81,7 +105,7 @@ impl ImageProcessor {
     }
 
     /// 快速生成缩略图（低质量但快速）
-    pub async fn generate_fast_thumbnail(&self, image_data: &[u8], _filename: &str) -> Result<Vec<u8>, Box<dyn std::error::Error>> {
+    pub async fn generate_fast_thumbnail(&self, image_data: &[u8], _filename: &str) -> Result<Vec<u8>, ImageProcessorError> {
         // 使用快速解码和缩放
         let img = image::load_from_memory(image_data)?;
         
@@ -130,7 +154,7 @@ impl ImageProcessor {
         &self,
         url: &str,
         filename: &str,
-    ) -> Result<ImageInfo, Box<dyn std::error::Error>> {
+    ) -> Result<ImageInfo, ImageProcessorError> {
         let response = reqwest::get(url).await?;
         let image_data = response.bytes().await?;
 
@@ -142,7 +166,7 @@ impl ImageProcessor {
         &self,
         image_data: &[u8],
         thumbnail_filename: &str,
-    ) -> Result<(), Box<dyn std::error::Error>> {
+    ) -> Result<(), ImageProcessorError> {
         // 使用统一的缩略图生成方法
         let thumbnail_data = self.generate_thumbnail_from_memory(image_data, thumbnail_filename).await?;
         
@@ -161,7 +185,7 @@ impl ImageProcessor {
         &self,
         image_data: &[u8],
         _thumbnail_filename: &str,
-    ) -> Result<Vec<u8>, Box<dyn std::error::Error>> {
+    ) -> Result<Vec<u8>, ImageProcessorError> {
         // 加载图片
         let img = image::load_from_memory(image_data)?;