feat: make the folder configurable

Author: chesedo

resources/static-folder/README.md

@@ -5,3 +5,25 @@ This plugin allows services to get the path to a static folder at runtime
 Add `shuttle-static-folder` to the dependencies for your service. This resource can be using by the `shuttle_static_folder::StaticFolder` attribute to get a `PathBuf` with the location of the static folder.
 
 An example using the Axum framework can be found on [GitHub](https://github.com/shuttle-hq/examples/tree/main/axum/websocket)
+
+``` rust
+#[shuttle_service::main]
+async fn main(
+    #[shuttle_static_folder::StaticFolder] static_folder: PathBuf,
+) -> __ { ... }
+```
+
+### Parameters
+| Parameter | Type | Default  | Description                                                        |
+|-----------|------|----------|--------------------------------------------------------------------|
+| folder    | str  | `static` | The folder relative to the crate root to make a static folder for. |
+
+### Example: Using the public folder instead
+Since this plugin defaults to the `static` folder, the arguments can be used to use the `public` folder instead.
+
+``` rust
+#[shuttle_service::main]
+async fn main(
+    #[shuttle_static_folder::StaticFolder(folder = "public")] public_folder: PathBuf,
+) -> __ { ... }
+```

resources/static-folder/src/lib.rs

@@ -3,21 +3,32 @@ use shuttle_service::{Factory, ResourceBuilder};
 use std::{fs::rename, path::PathBuf};
 use tokio::runtime::Runtime;
 
-pub struct StaticFolder;
+pub struct StaticFolder<'a> {
+    /// The folder to reach at runtime. Defaults to `static`
+    folder: &'a str,
+}
+
+impl<'a> StaticFolder<'a> {
+    pub fn folder(mut self, folder: &'a str) -> Self {
+        self.folder = folder;
+
+        self
+    }
+}
 
 #[async_trait]
-impl ResourceBuilder<PathBuf> for StaticFolder {
+impl<'a> ResourceBuilder<PathBuf> for StaticFolder<'a> {
     fn new() -> Self {
-        Self {}
+        Self { folder: "static" }
     }
 
     async fn build(
         self,
         factory: &mut dyn Factory,
         _runtime: &Runtime,
     ) -> Result<PathBuf, shuttle_service::Error> {
-        let input_dir = factory.get_build_path()?.join("static");
-        let output_dir = factory.get_storage_path()?.join("static");
+        let input_dir = factory.get_build_path()?.join(self.folder);
+        let output_dir = factory.get_storage_path()?.join(self.folder);
 
         rename(input_dir, output_dir.clone())?;