fix: URL encoding for API request

backend/Cargo.lock

@@ -115,6 +115,7 @@ dependencies = [
  "chrono",
  "chrono-tz",
  "dotenvy",
+ "percent-encoding",
  "reqwest",
  "serde",
  "serde_json",
@@ -929,9 +930,9 @@ dependencies = [
 
 [[package]]
 name = "percent-encoding"
-version = "2.3.1"
+version = "2.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e3148f5046208a5d56bcfc03053e3ca6334e51da8dfb19b6cdc8b306fae3283e"
+checksum = "9b4f627cb1b25917193a259e49bdad08f671f8d9708acfd5fe0a8c1455d87220"
 
 [[package]]
 name = "phf"

backend/Cargo.toml

@@ -8,6 +8,7 @@ axum = "0.8.4"
 chrono = { version = "0.4.41" }
 chrono-tz = "0.10.4"
 dotenvy = { version = "0.15.7", optional = true }
+percent-encoding = "2.3.2"
 reqwest = { version = "0.12.22", features = ["json", "rustls-tls"] }
 serde = { version = "1.0.219", features = ["derive"] }
 serde_json = "1.0.141"

backend/src/unifi_api.rs

@@ -1,5 +1,6 @@
 use axum::http::HeaderValue;
 use chrono::DateTime;
+use percent_encoding::{AsciiSet, CONTROLS, utf8_percent_encode};
 use reqwest::{Client, ClientBuilder, StatusCode};
 use std::{sync::OnceLock, time::Duration};
 use tracing::{debug, error, info, warn};
@@ -15,6 +16,7 @@ use crate::{
 const UNIFI_API_ROUTE: &str = "proxy/network/integration/v1/sites";
 const DATE_TIME_FORMAT: &str = "%Y-%m-%d %H:%M:%S";
 const ROLLING_VOUCHER_NAME_PREFIX: &str = "[ROLLING]";
+const FRAGMENT: &AsciiSet = &CONTROLS.add(b'[').add(b']');
 
 pub static UNIFI_API: OnceLock<UnifiAPI> = OnceLock::new();
 
@@ -359,7 +361,8 @@ impl<'a> UnifiAPI<'a> {
     pub async fn delete_expired_rolling_vouchers(&self) -> Result<DeleteResponse, StatusCode> {
         let url = format!(
             "{}?filter=and(expired.eq(true),name.like('{}*'))",
-            self.voucher_api_url, ROLLING_VOUCHER_NAME_PREFIX
+            self.voucher_api_url,
+            utf8_percent_encode(ROLLING_VOUCHER_NAME_PREFIX, FRAGMENT)
         );
         self.make_request(RequestType::Delete, &url, None::<&()>)
             .await