diff --git a/src/core/network/mod.rs b/src/core/network/mod.rs
index 86df2c2d..6db2da67 100644
--- a/src/core/network/mod.rs
+++ b/src/core/network/mod.rs
@@ -8,6 +8,24 @@ use serde_json::Value;
 
 const TELEGRAM_API_URL: &str = "https://api.telegram.org";
 
+fn method_url(base: &str, token: &str, method_name: &str) -> String {
+    format!(
+        "{url}/bot{token}/{method}",
+        url = base,
+        token = token,
+        method = method_name,
+    )
+}
+
+fn file_url(base: &str, token: &str, file_path: &str) -> String {
+    format!(
+        "{url}/file/bot{token}/{file}",
+        url = base,
+        token = token,
+        file = file_path,
+    )
+}
+
 #[derive(Debug)]
 pub enum RequestError {
     ApiError {
@@ -25,12 +43,7 @@ pub async fn request<T: DeserializeOwned, R: Request<ReturnValue = T>>(
     request: R,
 ) -> ResponseResult<T> {
     let mut response = client
-        .post(&format!(
-            "{url}/bot{token}/{method}",
-            url = TELEGRAM_API_URL,
-            token = request.token(),
-            method = request.name(),
-        ))
+        .post(&method_url(TELEGRAM_API_URL, request.token(), request.name()))
         .apply(|request_builder| {
             if let Some(params) = request.params() {
                 request_builder.multipart(params)
@@ -61,3 +74,36 @@ pub async fn request<T: DeserializeOwned, R: Request<ReturnValue = T>>(
         Ok(serde_json::from_value(response_json["result"].clone()).unwrap())
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn method_url_test() {
+        let url = method_url(
+            TELEGRAM_API_URL,
+            "535362388:AAF7-g0gYncWnm5IyfZlpPRqRRv6kNAGlao",
+            "methodName"
+        );
+
+        assert_eq!(
+            url,
+            "https://api.telegram.org/bot535362388:AAF7-g0gYncWnm5IyfZlpPRqRRv6kNAGlao/methodName"
+        );
+    }
+
+    #[test]
+    fn file_url_test() {
+        let url = file_url(
+            TELEGRAM_API_URL,
+            "535362388:AAF7-g0gYncWnm5IyfZlpPRqRRv6kNAGlao",
+            "AgADAgADyqoxG2g8aEsu_KjjVsGF4-zetw8ABAEAAwIAA20AA_8QAwABFgQ"
+        );
+
+        assert_eq!(
+            url,
+            "https://api.telegram.org/file/bot535362388:AAF7-g0gYncWnm5IyfZlpPRqRRv6kNAGlao/AgADAgADyqoxG2g8aEsu_KjjVsGF4-zetw8ABAEAAwIAA20AA_8QAwABFgQ"
+        );
+    }
+}