feat: relocate config.json to XDG-compliant directory

This commit changes the default location of the `config.json`
configuration file for patch-hub to `~/.config/patch-hub/config.json`
from its previous location at `~/.local/share/patch-hub/config.json`.
This relocation ensures compliance with XDG Base Directory standards.

Closes: #73

[Maintainer edits]
- Remove problematic test due to nature of being unstable to suite.

Signed-off-by: gabrielsrd <[email protected]>
Reviewed-by: David Tadokoro <[email protected]>
Signed-off-by: David Tadokoro <[email protected]>

Author: Gabriel Alves

src/app/config.rs

@@ -67,7 +67,8 @@ impl Config {
         }
 
         let config_path = format!(
-            "{}/.local/share/patch_hub/config.json",
+            // "{}/.local/share/patch_hub/config.json",
+            "{}/.config/patch-hub/config.json",
             env::var("HOME").unwrap()
         );
         if Path::new(&config_path).is_file() {
@@ -153,7 +154,7 @@ impl Config {
             path
         } else {
             format!(
-                "{}/.local/share/patch_hub/config.json",
+                "{}/.config/patch-hub/config.json",
                 env::var("HOME").unwrap()
             )
         };

src/app/config/tests.rs

@@ -126,3 +126,43 @@ fn test_config_precedence() {
     env::remove_var("PATCH_HUB_CONFIG_PATH");
     env::remove_var("PATCH_HUB_PAGE_SIZE");
 }
+
+#[test]
+fn test_save_patch_hub_config() {
+    let _lock = TEST_LOCK.lock().unwrap();
+
+    let config = Config::build();
+    let save_result = config.save_patch_hub_config();
+    assert!(save_result.is_ok());
+
+    let config_path = format!(
+        "{}/.config/patch-hub/config.json",
+        env::var("HOME").unwrap()
+    );
+    let saved_config = std::fs::read_to_string(config_path).unwrap();
+    let saved_config: Config = serde_json::from_str(&saved_config).unwrap();
+
+    assert_eq!(config.page_size(), saved_config.page_size());
+    assert_eq!(
+        config.patchsets_cache_dir(),
+        saved_config.patchsets_cache_dir()
+    );
+    assert_eq!(
+        config.bookmarked_patchsets_path(),
+        saved_config.bookmarked_patchsets_path()
+    );
+    assert_eq!(
+        config.mailing_lists_path(),
+        saved_config.mailing_lists_path()
+    );
+    assert_eq!(
+        config.reviewed_patchsets_path(),
+        saved_config.reviewed_patchsets_path()
+    );
+    assert_eq!(config.logs_path(), saved_config.logs_path());
+    assert_eq!(
+        config.git_send_email_options(),
+        saved_config.git_send_email_options()
+    );
+    assert_eq!(config.max_log_age(), saved_config.max_log_age());
+}