feat: add basic post and get logic

.gitignore

@@ -1 +1,2 @@
 /target
+/store

src/main.rs

@@ -1,19 +1,69 @@
 #[macro_use]
 extern crate rocket;
 
-#[get("/")]
-fn index() -> &'static str {
-    "Hello, world!"
+use rocket::form::Form;
+use rocket::fs::TempFile;
+use rocket::tokio::io::AsyncWriteExt;
+use rocket::tokio::fs::File;
+use rocket::tokio::io::AsyncReadExt;
+use rocket::fs::NamedFile;
+use rocket::get;
+use std::path::{Path, PathBuf};
+
+#[derive(FromForm)]
+struct Upload<'r> {
+    save: bool,
+    file: TempFile<'r>,
 }
 
 #[get("/")]
-fn world() -> &'static str {
-    "world!"
+fn index() -> &'static str {
+    "<h1>hey, index is working</h1>"
+}
+
+#[get("/<file..>")]
+async fn file(file: PathBuf) -> Option<NamedFile> {
+    let path = Path::new("./store").join(file);
+
+    NamedFile::open(path).await.ok()
+}
+
+#[post("/", data = "<upload>")]
+async fn upload(upload: Form<Upload<'_>>) -> String {
+    std::fs::create_dir_all("./store").expect("Failed to create directory");
+
+    let upload = upload.into_inner();
+
+    let filename: String = upload
+        .file
+        .name()
+        .and_then(|n| std::path::Path::new(n).file_name())
+        .and_then(|n| n.to_str())
+        .map(|s| s.to_owned())
+        .unwrap_or_else( || "unknown.bin".to_owned());
+
+    let path = std::path::Path::new("./store").join(&filename);
+
+    let mut tmp_file = upload.file.open().await.expect("Failed to open temp file");
+    let mut dest_file = File::create(&path)
+        .await
+        .expect("Failed to create destination file");
+
+    let mut buffer = Vec::new();
+    tmp_file
+        .read_to_end(&mut buffer)
+        .await
+        .expect("Failed to read temporary file");
+    dest_file
+        .write_all(&buffer)
+        .await
+        .expect("Failed to write destination file");
+
+
+    format!("http://localhost:8000/{}\n", filename)
 }
 
 #[launch]
 fn rocket() -> _ {
-    rocket::build()
-        .mount("/", routes![index])
-        .mount("/world", routes![world])
+    rocket::build().mount("/", routes![index, upload, file])
 }