bindex: contained fjall code

server/src/api/structs/extension.rs

@@ -0,0 +1,34 @@
+use std::path::Path;
+
+#[derive(PartialEq, Eq, Clone, Copy)]
+pub enum Extension {
+    #[allow(clippy::upper_case_acronyms)]
+    CSV,
+    #[allow(clippy::upper_case_acronyms)]
+    JSON,
+}
+
+impl Extension {
+    pub fn from(path: &Path) -> Option<Self> {
+        if let Some(extension) = path.extension() {
+            let extension = extension.to_str().unwrap();
+
+            if extension == Self::CSV.to_str() {
+                Some(Self::CSV)
+            } else if extension == Self::JSON.to_str() {
+                Some(Self::JSON)
+            } else {
+                None
+            }
+        } else {
+            None
+        }
+    }
+
+    pub fn to_str(&self) -> &str {
+        match self {
+            Extension::CSV => "csv",
+            Extension::JSON => "json",
+        }
+    }
+}