Added file updates

src/db/file.rs

@@ -18,6 +18,18 @@ pub async fn insert(
         .map(|_| ())
 }
 
+pub async fn update(file_id: Uuid, size: i64, hash: Vec<u8>, pool: &Pool) -> sqlx::Result<()> {
+    sqlx::query!(
+        "UPDATE files SET (sha512, file_size, updated_at) = ($2, $3, NOW()) WHERE file_id = $1",
+        file_id,
+        hash,
+        size
+    )
+    .execute(pool)
+    .await
+    .map(|_| ())
+}
+
 #[derive(Debug, serde::Serialize)]
 #[allow(clippy::struct_field_names, clippy::module_name_repetitions)]
 pub struct FileWithoutParentId {

src/endpoints/file/mod.rs

@@ -1,3 +1,4 @@
 pub mod delete;
 pub mod download;
+pub mod modify;
 pub mod upload;

src/endpoints/file/modify.rs

@@ -0,0 +1,51 @@
+use axum::extract::Multipart;
+
+use crate::prelude::*;
+
+#[derive(Deserialize, Debug)]
+pub struct Params {
+    file_id: Uuid,
+}
+
+pub async fn modify(
+    Query(params): Query<Params>,
+    State(state): State<AppState>,
+    claims: Claims,
+    mut multipart: Multipart,
+) -> Result<StatusCode, StatusCode> {
+    db::file::get_permissions(params.file_id, claims.user_id, &state.pool)
+        .await
+        .handle_internal()?
+        .can_write_guard()?;
+
+    // Very weird work around
+    let mut field = loop {
+        match multipart.next_field().await {
+            Ok(Some(field)) if field.file_name().is_some() => break field,
+            Ok(Some(_)) => continue,
+            _ => return Err(StatusCode::BAD_REQUEST),
+        }
+    };
+
+    let Some(mut file) = state
+        .storage
+        .write(params.file_id)
+        .await
+        .handle_internal()?
+    else {
+        return Err(StatusCode::NOT_FOUND);
+    };
+
+    let (hash, size) = match crate::FileStorage::write_to_file(&mut file, &mut field).await {
+        Ok(values) => values,
+        Err(err) => {
+            tracing::warn!(%err);
+            return Err(StatusCode::INTERNAL_SERVER_ERROR);
+        }
+    };
+    db::file::update(params.file_id, size, hash, &state.pool)
+        .await
+        .handle_internal()?;
+
+    Ok(StatusCode::NO_CONTENT)
+}

src/endpoints/file/upload.rs

@@ -1,10 +1,7 @@
 use std::collections::HashMap;
-use std::io;
 
 use axum::extract::multipart::{self, Multipart};
-use sha2::Digest as _;
-use tokio::io::{AsyncWrite, BufWriter};
-use tokio_util::io::StreamReader;
+use tokio::io::AsyncWrite;
 
 use crate::prelude::*;
 
@@ -13,7 +10,7 @@ pub struct Params {
     parent_folder: Uuid,
 }
 
-async fn write_file(
+async fn create_file(
     file_id: Uuid,
     file: impl AsyncWrite + Unpin,
     file_name: &str,
@@ -21,27 +18,13 @@ async fn write_file(
     parent_folder: Uuid,
     pool: &Pool,
 ) -> bool {
-    const BUF_CAP: usize = 64 * 1024 * 1024; // 64 MiB
-    let mut hash = sha2::Sha512::new();
-    let mut size: i64 = 0;
-    let stream = field.map(|value| match value {
-        Ok(bytes) => {
-            hash.update(&bytes);
-            size = i64::try_from(bytes.len())
-                .ok()
-                .and_then(|part_size| size.checked_add(part_size))
-                .ok_or_else(|| io::Error::other(anyhow::anyhow!("Size calculation overflow")))?;
-            Ok(bytes)
+    let (hash, size) = match crate::FileStorage::write_to_file(file, field).await {
+        Ok(values) => values,
+        Err(err) => {
+            tracing::warn!(%err);
+            return false;
         }
-        Err(err) => Err(io::Error::other(err)),
-    });
-    let mut reader = StreamReader::new(stream);
-    let mut writer = BufWriter::with_capacity(BUF_CAP, file);
-    if let Err(err) = tokio::io::copy(&mut reader, &mut writer).await {
-        tracing::warn!(%err);
-        return false;
-    }
-    let hash = hash.finalize().to_vec();
+    };
     db::file::insert(file_id, parent_folder, file_name, size, hash, pool)
         .await
         .inspect_err(|err| tracing::warn!(%err))
@@ -74,7 +57,7 @@ pub async fn upload(
             tracing::warn!("Couldn't create uuid for new file");
             continue;
         };
-        let is_success = write_file(
+        let is_success = create_file(
             file_id,
             &mut file,
             &file_name,

src/file_storage.rs

@@ -4,7 +4,14 @@ use std::{
     sync::Arc,
 };
 
-use tokio::fs;
+use axum::body::Bytes;
+use futures::{Stream, StreamExt};
+use sha2::Digest as _;
+use tokio::{
+    fs,
+    io::{AsyncWrite, AsyncWriteExt, BufWriter},
+};
+use tokio_util::io::StreamReader;
 use uuid::Uuid;
 
 #[derive(Clone)]
@@ -63,6 +70,14 @@ impl FileStorage {
             .map_err(Into::into)
     }
 
+    pub async fn write(&self, file_id: Uuid) -> anyhow::Result<Option<impl tokio::io::AsyncWrite>> {
+        match fs::File::create(self.path_for_file(file_id)).await {
+            Ok(file) => Ok(Some(file)),
+            Err(err) if err.kind() == io::ErrorKind::NotFound => Ok(None),
+            Err(err) => Err(err.into()),
+        }
+    }
+
     pub async fn delete(&self, file_id: Uuid) -> anyhow::Result<bool> {
         match fs::remove_file(self.path_for_file(file_id)).await {
             Ok(()) => Ok(true),
@@ -70,4 +85,30 @@ impl FileStorage {
             Err(err) => Err(err.into()),
         }
     }
+
+    pub async fn write_to_file<F, S, E>(file: F, stream: S) -> io::Result<(Vec<u8>, i64)>
+    where
+        F: AsyncWrite + Unpin,
+        S: Stream<Item = Result<Bytes, E>> + Unpin,
+        E: Into<Box<dyn std::error::Error + Send + Sync>>,
+    {
+        const BUF_CAP: usize = 64 * 1024 * 1024; // 64 MiB
+        let mut hash = sha2::Sha512::new();
+        let mut size: i64 = 0;
+        let stream = stream.map(|value| {
+            let bytes = value.map_err(io::Error::other)?;
+            hash.update(&bytes);
+            size = i64::try_from(bytes.len())
+                .ok()
+                .and_then(|part_size| size.checked_add(part_size))
+                .ok_or_else(|| io::Error::other(anyhow::anyhow!("Size calculation overflow")))?;
+            io::Result::Ok(bytes)
+        });
+        let mut reader = StreamReader::new(stream);
+        let mut writer = BufWriter::with_capacity(BUF_CAP, file);
+        tokio::io::copy_buf(&mut reader, &mut writer).await?;
+        writer.flush().await?;
+        let hash = hash.finalize().to_vec();
+        Ok((hash, size))
+    }
 }

src/main.rs

@@ -101,7 +101,8 @@ fn app(state: AppState) -> Router {
             "/files",
             get(file::download::download)
                 .post(file::upload::upload)
-                .delete(file::delete::delete),
+                .delete(file::delete::delete)
+                .patch(file::modify::modify),
         )
         .route(
             "/folders",