Fix multibyte request failed (#24)

* fix multibyte request failed

* remove unused variable

* add test

src/utils/encode.rs

@@ -0,0 +1,48 @@
+pub fn encode(input: &str) -> String {
+    let mut encoded = String::new();
+
+    for byte in input.bytes() {
+        match byte {
+            b'A'..=b'Z' | b'a'..=b'z' | b'0'..=b'9' | b'-' | b'_' | b'.' | b'~' => {
+                encoded.push(byte as char);
+            }
+            // 他の文字は %XX の形式でエンコード
+            _ => encoded.push_str(&format!("%{:02X}", byte)),
+        }
+    }
+
+    encoded
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_encode() {
+        assert_eq!(encode("abc"), "abc");
+        assert_eq!(encode("あいう"), "%E3%81%82%E3%81%84%E3%81%86");
+        assert_eq!(encode("a b c"), "a%20b%20c");
+        assert_eq!(encode("a+b+c"), "a%2Bb%2Bc");
+        assert_eq!(encode("a=b=c"), "a%3Db%3Dc");
+        assert_eq!(encode("a:b:c"), "a%3Ab%3Ac");
+        assert_eq!(encode("a~b~c"), "a~b~c");
+        assert_eq!(encode("a!b!c"), "a%21b%21c");
+        assert_eq!(encode("a*b*c"), "a%2Ab%2Ac");
+        assert_eq!(encode("a'b'c"), "a%27b%27c");
+        assert_eq!(encode("a(c)c"), "a%28c%29c");
+        assert_eq!(encode("a)c)c"), "a%29c%29c");
+        assert_eq!(encode("a;c;c"), "a%3Bc%3Bc");
+        assert_eq!(encode("a:c:c"), "a%3Ac%3Ac");
+        assert_eq!(encode("a,d,c"), "a%2Cd%2Cc");
+        assert_eq!(encode("a/d/c"), "a%2Fd%2Fc");
+        assert_eq!(encode("a\\d\\c"), "a%5Cd%5Cc");
+        assert_eq!(encode("a?d?c"), "a%3Fd%3Fc");
+        assert_eq!(encode("a#d#c"), "a%23d%23c");
+        assert_eq!(encode("a&d&c"), "a%26d%26c");
+        assert_eq!(encode("a=d=c"), "a%3Dd%3Dc");
+        assert_eq!(encode("a@d@c"), "a%40d%40c");
+        assert_eq!(encode("a$d$c"), "a%24d%24c");
+        assert_eq!(encode("a`d`c"), "a%60d%60c");
+    }
+}

src/utils/google_search.rs

@@ -2,7 +2,10 @@ use serde::Deserialize;
 use std::env;
 use tracing::error;
 
-use crate::http::client::{HttpClient, StatusCode};
+use crate::{
+    http::client::{HttpClient, StatusCode},
+    utils::encode::encode,
+};
 
 #[derive(Deserialize, Debug)]
 pub struct GoogleItem {
@@ -48,20 +51,26 @@ pub async fn google_search(
     };
 
     let url = format!(
-    "https://www.googleapis.com/customsearch/v1?cx={search_engine_id}&key={api_key}&hl=ja{search_type}&q={q}{site}");
+    "https://www.googleapis.com/customsearch/v1?cx={search_engine_id}&key={api_key}&hl=ja{search_type}&q={}{site}", encode(q));
 
     let client = HttpClient::new();
     let result = match client.get(&url).await {
         Ok(result) => match result.status_code {
             StatusCode::OK => result,
+            StatusCode::BadRequest => return Err("リクエストが不正です。".to_string()),
             StatusCode::Unauthorized => return Err("認証に失敗しました。".to_string()),
             StatusCode::Forbidden => return Err("アクセス権限がありません。".to_string()),
             StatusCode::NotFound => return Err("リソースが見つかりませんでした。".to_string()),
             StatusCode::TooManyRequests => return Err(
                 "Google Search API へのリクエスト超過です。しばらくしてからやり直してください。"
                     .to_string(),
             ),
-            _ => return Err("予期しないエラーが発生しました。".to_string()),
+            status => {
+                return Err(
+                    format!("予期しないエラーが発生しました。status: {}", status as u16)
+                        .to_string(),
+                );
+            }
         },
         Err(_) => return Err("Google 検索でエラーが発生しました。".to_string()),
     };

src/utils/mod.rs

@@ -1,3 +1,4 @@
+pub mod encode;
 pub mod fetch_atproto;
 pub mod fetch_chatgpt;
 pub mod fetch_rss_feed;