load commit hash at compile time

filed/build.rs

@@ -58,5 +58,13 @@ fn main() {
             .arg(asset_path(asset))
             .spawn()
             .unwrap();
-    })
+    });
+
+    let commit = Command::new("git")
+        .args(&["rev-parse", "HEAD"])
+        .output()
+        .unwrap();
+    
+    let commit = String::from_utf8(commit.stdout).unwrap();
+    println!("cargo:rustc-env=COMMIT_HASH={commit}");
 }

filed/src/env.rs

@@ -15,6 +15,18 @@ pub struct Redis {
     pub prefix: String
 }
 
+#[derive(Debug, Clone)]
+pub struct VersionData {
+    pub commit: String
+}
+impl Default for VersionData {
+    fn default() -> Self {
+        VersionData {
+            commit: env!("COMMIT_HASH").to_string()
+        }
+    }
+}
+
 #[derive(Debug, Clone)]
 pub struct Env {
     pub logging: bool,
@@ -24,7 +36,8 @@ pub struct Env {
     pub filedir: String,
     pub instanceurl: String,
     pub uploadspath: String,
-    pub confpath: String
+    pub confpath: String,
+    pub version: VersionData
 }
 
 fn get_var<T: Into<String>, O: From<String>>(name: T) -> Result<O, String> {
@@ -140,7 +153,8 @@ pub fn loadenv() -> Result<Env, Box<dyn std::error::Error>> {
                     return Err(format!("CONF_FILE is {}, which is not a file!", spath).into())
                 }
                 spath
-            }
+            },
+            version: VersionData::default()
         }
     )
 }