Initial API setup

Right now we are just listing files in a given subdirectory with not
authentication.

src/main.rs

@@ -0,0 +1,50 @@
+use actix_web::web::{HttpResponse, Json};
+use actix_web::{get, post, App, HttpServer, Responder};
+use data::{LoginRequest, ThumbnailRequest};
+use std::path::PathBuf;
+
+use crate::files::list_files;
+
+mod data;
+mod files;
+
+#[post("/register")]
+async fn register() -> impl Responder {
+    "".to_owned()
+}
+
+#[post("/login")]
+async fn login(_creds: Json<LoginRequest>) -> impl Responder {
+    "".to_owned()
+}
+
+#[get("/photos")]
+async fn list_photos(req: Json<ThumbnailRequest>) -> impl Responder {
+    println!("{}", req.path);
+
+    let path = &req.path;
+
+    match path {
+        path if path.contains("..") => HttpResponse::BadRequest().finish(),
+
+        path => {
+            let path = PathBuf::from(path);
+            if path.is_relative() {
+                let mut full_path = std::env::current_dir().unwrap();
+                full_path.push(path);
+                let files = list_files(full_path);
+                HttpResponse::Ok().json(files.unwrap_or_default())
+            } else {
+                HttpResponse::BadRequest().finish()
+            }
+        }
+    }
+}
+
+#[actix_rt::main]
+async fn main() -> std::io::Result<()> {
+    HttpServer::new(|| App::new().service(login).service(list_photos))
+        .bind("127.0.0.1:8088")?
+        .run()
+        .await
+}