.

.vscode/settings.json

@@ -0,0 +1,16 @@
+{
+    "cSpell.words": [
+        "actix",
+        "bindgen",
+        "creds",
+        "dotenv",
+        "Gloo",
+        "minio",
+        "noopener",
+        "noreferrer",
+        "onclick",
+        "ondragover",
+        "ondrop",
+        "onresize"
+    ]
+}

backend/src/api/photos_api.rs

@@ -0,0 +1,57 @@
+use actix_session::Session;
+use actix_web::{
+    post,
+    web::{Data, Json},
+    HttpResponse,
+};
+use s3::bucket::Bucket;
+use serde::{Deserialize, Serialize};
+
+use crate::repository::mongodb_repo::MongoRepo;
+
+#[derive(Debug, Deserialize, Serialize)]
+pub struct PhotosWrapper {
+    photos: Vec<String>,
+}
+
+#[derive(Debug, Deserialize, Serialize)]
+pub struct PhotosUrlsWrapper {
+    photos: Vec<(String, String)>,
+}
+
+// Return an opaque 500 while preserving the error's root cause for logging.
+fn e500<T>(e: T) -> actix_web::Error
+where
+    T: std::fmt::Debug + std::fmt::Display + 'static,
+{
+    actix_web::error::ErrorInternalServerError(e)
+}
+
+#[post("/api/photos/upload")]
+pub async fn get_presigned_post_urls(
+    db: Data<MongoRepo>,
+    bucket: Data<Bucket>,
+    request: Json<PhotosWrapper>,
+    session: Session,
+) -> Result<HttpResponse, actix_web::Error> {
+    let Some(user_id) = session.get::<String>("user_id").map_err(e500)? else {
+        return Ok(HttpResponse::Unauthorized().body("Not authorized"));
+    };
+
+    let Ok(_) = db.get_user(&user_id).await else {
+        return Ok(HttpResponse::Unauthorized().body("Not authorized"));
+    };
+
+    let photos: Vec<(String, String)> = request
+        .photos
+        .iter()
+        .map(|x| {
+            (
+                x.clone(),
+                bucket.presign_put(format!("/{x}"), 86400, None).unwrap(),
+            )
+        })
+        .collect();
+
+    Ok(HttpResponse::Ok().json(PhotosUrlsWrapper { photos }))
+}