Modifying build script to copy frontend to OUT_DIR and avoid building…

… the frontend.

Cargo.toml

@@ -12,6 +12,7 @@ description = """
 Crates Registry is a tool for serve crates and rustup installation in offline networks.
 The project is based on panamax project and cargo-http-registry and use theis code.
 """
+include = ["/frontend/build", "/src", "build.rs"]
 
 [dependencies]
 anyhow = "1.0"

build.rs

@@ -1,40 +1,28 @@
-use std::process::Command;
+use std::path::{Path, PathBuf};
 
-#[cfg(target_os = "windows")]
-fn build_frontend() {
-    Command::new("powershell")
-        .arg("-Command")
-        .arg("yarn install")
-        .current_dir("frontend")
-        .output()
-        .expect("Failed to install frontend dependencies (windows target)");
-    Command::new("powershell")
-        .arg("-Command")
-        .arg("yarn build")
-        .current_dir("frontend")
-        .output()
-        .expect("Failed to build the frontend (windows target)");
-}
-
-#[cfg(target_os = "linux")]
-fn build_frontend() {
-    Command::new("yarn")
-        .arg("install")
-        .current_dir("frontend")
-        .output()
-        .expect("Failed to install frontend dependencies (linux target)");
-    Command::new("yarn")
-        .arg("build")
-        .current_dir("frontend")
-        .output()
-        .expect("Failed to build the frontend (linux target)");
+/// Copy files from source to destination recursively.
+pub fn copy_folder(source: impl AsRef<Path>, destination: impl AsRef<Path>) -> std::io::Result<()> {
+    std::fs::create_dir_all(&destination)?;
+    for entry in std::fs::read_dir(source)? {
+        let entry = entry?;
+        let filetype = entry.file_type()?;
+        if filetype.is_dir() {
+            copy_folder(entry.path(), destination.as_ref().join(entry.file_name()))?;
+        } else {
+            std::fs::copy(entry.path(), destination.as_ref().join(entry.file_name()))?;
+        }
+    }
+    Ok(())
 }
 
 fn main() {
-    if std::env::var("SKIP_BUILDING_FRONTEND").is_ok() {
-        return;
+    println!("cargo:rerun-if-changed=frontend/build");
+    let frontend_dist_folder = PathBuf::from("frontend/build");
+    if !frontend_dist_folder.exists() {
+        eprintln!("You must build the Frontend first. please see the relevant script command in `frontend/package.json`.");
     }
-    println!("cargo:rerun-if-changed=frontend/src");
-    eprintln!("Require yarn.");
-    build_frontend()
+
+    let frontend_dist_folder_out =
+        PathBuf::from(std::env::var("OUT_DIR").unwrap()).join("frontend_dist_folder");
+    copy_folder(frontend_dist_folder, frontend_dist_folder_out).unwrap();
 }

src/serve_frontend.rs

@@ -16,7 +16,7 @@ use warp::Filter;
 use crate::serve::ServerError;
 use crate::unpack;
 
-static FRONTEND: Dir<'_> = include_dir!("frontend/build/");
+static FRONTEND: Dir<'_> = include_dir!("$OUT_DIR/frontend_dist_folder/");
 
 fn available_platforms(root: &Path) -> Result<Vec<String>> {
     Ok(std::fs::read_dir(root.join("rustup").join("dist"))?