First implementation of archive uploading

src/main.rs

@@ -1,14 +1,16 @@
-use async_compression::tokio::bufread::GzipDecoder;
 use axum::{
     extract::BodyStream,
     http::StatusCode,
+    response::IntoResponse,
     routing::{get_service, post},
     Router,
 };
+use flate2::read::GzDecoder;
 use futures_util::TryStreamExt;
-use hyper::{Body, Request};
+use std::collections::HashSet;
 use std::io::ErrorKind;
 use std::net::SocketAddr;
+use std::path::Path;
 use tar::Archive;
 use tokio_util::io::StreamReader;
 use tower_http::{auth::RequireAuthorizationLayer, services::ServeDir, trace::TraceLayer};
@@ -57,10 +59,79 @@ async fn main() {
         .unwrap();
 }
 
-async fn post_deploy(res: BodyStream) {
+async fn post_deploy(res: BodyStream) -> impl IntoResponse {
+    // This converts a stream into something that implements AsyncRead, which we can then use to
+    // asynchronously write the file to disk
     let mut read =
         StreamReader::new(res.map_err(|axum_err| std::io::Error::new(ErrorKind::Other, axum_err)));
-    //     let tar = GzipDecoder::new(body);
-    //     let mut archive = Archive::new(tar);
-    //     archive.unpack("./static").unwrap();
+    let mut file = tokio::fs::File::create("test.archive.gz").await.unwrap();
+    tokio::io::copy(&mut read, &mut file).await.unwrap();
+
+    // Extract the contents of the tarball synchronously
+    match tokio::task::spawn_blocking(|| {
+        let file = match std::fs::File::open("test.archive.gz") {
+            Ok(v) => v,
+            Err(_) => return StatusCode::INTERNAL_SERVER_ERROR,
+        };
+        let tar = GzDecoder::new(file);
+        let mut archive = Archive::new(tar);
+
+        let mut paths = HashSet::new();
+
+        let entries = match archive.entries() {
+            Ok(e) => e,
+            Err(_) => return StatusCode::INTERNAL_SERVER_ERROR,
+        };
+
+        // Extract each entry into the output directory
+        for entry_res in entries {
+            if let Ok(mut entry) = entry_res {
+                if let Err(_) = entry.unpack_in("static") {
+                    return StatusCode::INTERNAL_SERVER_ERROR;
+                }
+
+                if let Ok(path) = entry.path() {
+                    paths.insert(path.into_owned());
+                }
+            } else {
+                return StatusCode::INTERNAL_SERVER_ERROR;
+            }
+        }
+
+        // Remove any old files that weren't present in new archive
+        let mut items = vec![];
+
+        // Start by populating the vec with the initial files
+        let base_path = Path::new("static");
+        let iter = match base_path.read_dir() {
+            Ok(v) => v,
+            Err(_) => return StatusCode::INTERNAL_SERVER_ERROR,
+        };
+        iter.filter_map(|r| r.ok())
+            .for_each(|e| items.push(e.path()));
+
+        // As long as there are still items in the vec, we keep going
+        while items.len() > 0 {
+            let item = items.pop().unwrap();
+            tracing::debug!("{:?}", item);
+
+            if !paths.contains(item.strip_prefix("static/").unwrap()) {
+                if item.is_dir() {
+                    std::fs::remove_dir_all(item);
+                } else {
+                    std::fs::remove_file(item);
+                }
+            } else if let Ok(iter) = item.read_dir() {
+                iter.filter_map(|r| r.ok())
+                    .for_each(|e| items.push(e.path()));
+            }
+        }
+
+        StatusCode::OK
+    })
+    .await
+    {
+        Ok(s) => s,
+        Err(_) => StatusCode::INTERNAL_SERVER_ERROR,
+    }
 }