add endpoint to upload images without timestamp

Author: mustafa-ans

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+    "rust-analyzer.checkOnSave": false
+}

src/main.rs

@@ -37,6 +37,7 @@ async fn main() {
     let app = Router::new()
         .route("/", get(|| async move { "welcome to Image upload api" }))
         .route("/upload", post(upload_image))
+        .route("/upload/master", post(upload_image_no_timestamp))
         .layer(cors_layer)
         .layer(Extension(aws_s3_client))
         .layer(axum::middleware::from_fn(log_request_ip));
@@ -113,3 +114,63 @@ async fn upload_image(
     // send the urls in response
     Ok(Json(serde_json::json!(res)))
 }
+
+
+async fn upload_image_no_timestamp(
+    Extension(s3_client): Extension<Client>,
+    mut files: Multipart,
+) -> Result<Json<serde_json::Value>, (StatusCode, Json<serde_json::Value>)> {
+    // get the name of aws bucket from env variable
+    let bucket = std::env::var("AWS_S3_BUCKET").unwrap_or_else(|_| "my-bucket-name".to_owned());
+    // if you have a public url for your bucket, place it as ENV variable BUCKET_URL
+    let bucket_url = std::env::var("BUCKET_URL").unwrap_or_else(|_| bucket.to_owned());
+    // if a sub folder path is set in environment then get that else set a default sub path
+    let sub_path = std::env::var("BUCKET_SUB_PATH").unwrap_or_else(|_| "uploaded_images".to_owned());
+    // we are going to store the respose in HashMap as filename: url => key: value
+    let mut res = HashMap::new();
+    while let Some(file) = files.next_field().await.unwrap() {
+        // this is the name which is sent in formdata from frontend or whoever called the api, i am
+        // using it as category, we can get the filename from file data
+        let category = file.name().unwrap().to_string();
+        // name of the file with extention
+        let name = file.file_name().unwrap().to_string();
+        // file data
+        let data = file.bytes().await.unwrap();
+        // the request can control where to save the image on AWS S3
+        let request_path = if category.trim().is_empty() {"".to_owned()} else {format!("{}/", &category.trim_end_matches('/'))};
+        // the path of file to store on aws s3 with file name and extention
+        // timestamp_category_filename => 14-12-2022_01:01:01_customer_somecustomer.jpg
+        let key = format!(
+            "{}/images/{}_{}_{}",
+            sub_path,
+            &request_path,
+            &category,
+            &name
+        );
+
+        // send Putobject request to aws s3
+        let _resp = s3_client
+            .put_object()
+            .bucket(&bucket)
+            .key(&key)
+            .body(data.into())
+            .send()
+            .await
+            .map_err(|err| {
+                dbg!(err);
+                (
+                    StatusCode::INTERNAL_SERVER_ERROR,
+                    Json(serde_json::json!({"err": "an error occured during image upload"})),
+                )
+            })?;
+        dbg!(_resp);
+        res.insert(
+            // concatinating name and category so even if the filenames are same it will not
+            // conflict
+            format!("{}_{}", &name, &category),
+            format!("{}/{}", bucket_url, key),
+        );
+    }
+    // send the urls in response
+    Ok(Json(serde_json::json!(res)))
+}