Explorer public folder being relative to the binary (#447)

* Explorer public folder being relative to the binary

* Qualifying the public mounting path

Co-authored-by: Dave <futurechimp@users.noreply.github.com>

explorer/src/jobs/mixmining.rs

@@ -7,6 +7,15 @@ pub async fn renew_periodically(validator_base_url: &str) -> Result<(), Error> {
     let url = format!("{}/{}", validator_base_url, RELATIVE_PATH);
 
     let topology_json = reqwest::get(&url).await?.text().await?;
-    file::save(topology_json, "public/downloads/mixmining.json");
+
+    let save_path = std::env::current_exe()
+        .expect("Failed to evaluate current exe path")
+        .parent()
+        .expect("the binary itself has no parent path?!")
+        .join("public")
+        .join("downloads")
+        .join("mixmining.json");
+
+    file::save(topology_json, save_path);
     Ok(())
 }

explorer/src/jobs/topology.rs

@@ -7,6 +7,15 @@ pub async fn renew_periodically(validator_base_url: &str) -> Result<(), Error> {
     let url = format!("{}/{}", validator_base_url, RELATIVE_PATH);
 
     let topology_json = reqwest::get(&url).await?.text().await?;
-    file::save(topology_json, "public/downloads/topology.json");
+
+    let save_path = std::env::current_exe()
+        .expect("Failed to evaluate current exe path")
+        .parent()
+        .expect("the binary itself has no parent path?!")
+        .join("public")
+        .join("downloads")
+        .join("topology.json");
+
+    file::save(topology_json, save_path);
     Ok(())
 }

explorer/src/main.rs

@@ -37,9 +37,15 @@ async fn main() {
     let matches = parse_args();
     let validator_base_url = matches.value_of(VALIDATOR_ARG).unwrap();
 
+    let public_path = std::env::current_exe()
+    .expect("Failed to evaluate current exe path")
+    .parent()
+    .expect("the binary itself has no parent path?!")
+    .join("public");
+
     tokio::task::spawn_blocking(|| {
         rocket::ignite()
-            .mount("/", StaticFiles::from("public"))
+            .mount("/", StaticFiles::from(public_path))
             .launch()
     });
 

explorer/src/utils/file.rs

@@ -1,10 +1,10 @@
 use std::{fs::File, io::Write, path::Path};
 
-pub fn save(text: String, path_str: &str) {
-    let path = Path::new(path_str);
+pub fn save<P: AsRef<Path>>(text: String, path: P) {
+    let path = path.as_ref();
     let display = path.display();
 
-    let mut file = match File::create(&path) {
+    let mut file = match File::create(path) {
         Err(why) => panic!("couldn't open {}: {}", display, why),
         Ok(file) => file,
     };