feat: 配置页增加测试连接按钮，发送简单文本验证API是否可用

flomo-ai-desktop/src/app.rs

@@ -26,6 +26,10 @@ pub struct FlomoAiApp {
     new_prompt_title: String,
     new_prompt_content: String,
 
+    test_status: String,
+    test_is_loading: bool,
+    pending_test: Option<std::thread::JoinHandle<Result<String, String>>>,
+
     current_page: Page,
     theme_dirty: bool,
 }
@@ -54,6 +58,10 @@ impl FlomoAiApp {
             new_prompt_title: String::new(),
             new_prompt_content: String::new(),
 
+            test_status: "点击测试连接".to_string(),
+            test_is_loading: false,
+            pending_test: None,
+
             current_page: Page::Main,
             theme_dirty: false,
         }
@@ -84,6 +92,28 @@ impl FlomoAiApp {
                 ctx.request_repaint();
             }
         }
+
+        if let Some(handle) = self.pending_test.take() {
+            if handle.is_finished() {
+                match handle.join() {
+                    Ok(Ok(text)) => {
+                        self.test_status = format!("连接成功: {}", text.chars().take(30).collect::<String>());
+                        self.test_is_loading = false;
+                    }
+                    Ok(Err(e)) => {
+                        self.test_status = format!("连接失败: {}", e);
+                        self.test_is_loading = false;
+                    }
+                    Err(_) => {
+                        self.test_status = "测试线程错误".to_string();
+                        self.test_is_loading = false;
+                    }
+                }
+            } else {
+                self.pending_test = Some(handle);
+                ctx.request_repaint();
+            }
+        }
     }
 
     fn send_request(&mut self, ctx: &egui::Context) {
@@ -144,6 +174,38 @@ impl FlomoAiApp {
         self.settings.theme_config.mode = self.settings_selected_theme;
         let _ = save_settings(&self.settings);
     }
+
+    fn test_connection(&mut self, ctx: &egui::Context) {
+        if self.test_is_loading {
+            return;
+        }
+
+        if self.settings_base_url.is_empty() {
+            self.test_status = "错误: Base URL 不能为空".to_string();
+            return;
+        }
+
+        self.test_status = "测试中...".to_string();
+        self.test_is_loading = true;
+
+        let settings = self.settings.clone();
+        let ctx_clone = ctx.clone();
+
+        let handle = std::thread::spawn(move || {
+            let mut test_settings = settings.clone();
+            test_settings.llm_config.model = if settings.llm_config.model.is_empty() {
+                "gpt-4o".to_string()
+            } else {
+                settings.llm_config.model.clone()
+            };
+
+            let result = crate::api::call_llm(&test_settings, "你好，请回复OK".to_string(), None);
+            ctx_clone.request_repaint();
+            result
+        });
+
+        self.pending_test = Some(handle);
+    }
 }
 
 impl eframe::App for FlomoAiApp {
@@ -415,6 +477,31 @@ impl FlomoAiApp {
             ui.text_edit_singleline(&mut self.settings_model);
             ui.add_space(12.0);
 
+            // Test connection button
+            ui.horizontal(|ui| {
+                let btn_text = if self.test_is_loading { "测试中..." } else { "测试连接" };
+                let btn = egui::Button::new(btn_text)
+                    .fill(egui::Color32::from_rgb(100, 100, 255))
+                    .rounding(4.0)
+                    .min_size(egui::vec2(80.0, 32.0));
+
+                if ui.add(btn).clicked() && !self.test_is_loading {
+                    self.test_connection(ctx);
+                }
+
+                let status_color = if self.test_is_loading {
+                    egui::Color32::from_rgb(255, 165, 0)
+                } else if self.test_status.starts_with("连接成功") {
+                    egui::Color32::from_rgb(0, 180, 0)
+                } else if self.test_status.starts_with("连接失败") || self.test_status.starts_with("错误") {
+                    egui::Color32::RED
+                } else {
+                    egui::Color32::GRAY
+                };
+
+                ui.label(egui::RichText::new(&self.test_status).size(11.0).color(status_color));
+            });
+
             ui.separator();
 
             ui.label(egui::RichText::new("主题").size(14.0).strong());

flomo-ai/app/src/main/java/com/example/flomo_ai/SecondActivity.kt

@@ -50,6 +50,8 @@ class SecondActivity : AppCompatActivity() {
     private lateinit var etApiKey: EditText
     private lateinit var btnToggleApiKey: ImageButton
     private lateinit var etModel: EditText
+    private lateinit var btnTestConnection: Button
+    private lateinit var tvTestStatus: TextView
     private lateinit var llHeadersList: LinearLayout
     private lateinit var btnAddHeader: Button
     private lateinit var layoutHeaderContent: LinearLayout
@@ -151,6 +153,8 @@ class SecondActivity : AppCompatActivity() {
             etApiKey = findViewById(R.id.etApiKey)
             btnToggleApiKey = findViewById(R.id.btnToggleApiKey)
             etModel = findViewById(R.id.etModel)
+            btnTestConnection = findViewById(R.id.btnTestConnection)
+            tvTestStatus = findViewById(R.id.tvTestStatus)
             
             // Header Section
             llHeadersList = findViewById(R.id.llHeadersList)
@@ -235,6 +239,11 @@ class SecondActivity : AppCompatActivity() {
                 }
             }
             
+            // Test connection button
+            btnTestConnection.setOnClickListener {
+                testConnection()
+            }
+            
             Log.d("SecondActivity", "initViews: Completed")
         } catch (e: Exception) {
             Log.e("SecondActivity", "initViews: Error finding views", e)
@@ -378,6 +387,76 @@ class SecondActivity : AppCompatActivity() {
         }
     }
 
+    private fun testConnection() {
+        val baseUrl = etBaseUrl.text.toString().trim()
+        val apiKey = etApiKey.text.toString().trim()
+        val model = etModel.text.toString().trim()
+        
+        if (baseUrl.isEmpty()) {
+            tvTestStatus.text = "错误: Base URL 不能为空"
+            tvTestStatus.setTextColor(ContextCompat.getColor(this, R.color.error))
+            return
+        }
+        
+        tvTestStatus.text = "测试中..."
+        tvTestStatus.setTextColor(ContextCompat.getColor(this, R.color.warning))
+        btnTestConnection.isEnabled = false
+        
+        CoroutineScope(Dispatchers.IO).launch {
+            try {
+                val messagesJson = org.json.JSONArray().apply {
+                    put(org.json.JSONObject().apply {
+                        put("role", "user")
+                        put("content", "你好，请回复OK")
+                    })
+                }
+                
+                val requestBody = org.json.JSONObject().apply {
+                    put("model", model)
+                    put("messages", messagesJson)
+                    put("max_tokens", 10)
+                }
+                
+                val client = OkHttpClient()
+                val request = Request.Builder()
+                    .url("$baseUrl/chat/completions")
+                    .addHeader("Content-Type", "application/json")
+                    .addHeader("Authorization", "Bearer $apiKey")
+                    .post(requestBody.toString().toRequestBody("application/json".toMediaType()))
+                    .build()
+                
+                val response = client.newCall(request).execute()
+                
+                withContext(Dispatchers.Main) {
+                    btnTestConnection.isEnabled = true
+                    if (response.isSuccessful) {
+                        val responseBody = response.body?.string()
+                        val responseJson = org.json.JSONObject(responseBody ?: "")
+                        val choices = responseJson.optJSONArray("choices")
+                        if (choices != null && choices.length() > 0) {
+                            val message = choices.getJSONObject(0).optJSONObject("message")
+                            val content = message?.optString("content", "") ?: ""
+                            tvTestStatus.text = "连接成功: ${content.take(20)}"
+                            tvTestStatus.setTextColor(ContextCompat.getColor(this@SecondActivity, R.color.success))
+                        } else {
+                            tvTestStatus.text = "连接成功，但返回格式异常"
+                            tvTestStatus.setTextColor(ContextCompat.getColor(this@SecondActivity, R.color.warning))
+                        }
+                    } else {
+                        tvTestStatus.text = "连接失败: ${response.code} ${response.message}"
+                        tvTestStatus.setTextColor(ContextCompat.getColor(this@SecondActivity, R.color.error))
+                    }
+                }
+            } catch (e: Exception) {
+                withContext(Dispatchers.Main) {
+                    btnTestConnection.isEnabled = true
+                    tvTestStatus.text = "连接失败: ${e.message}"
+                    tvTestStatus.setTextColor(ContextCompat.getColor(this@SecondActivity, R.color.error))
+                }
+            }
+        }
+    }
+
     private fun addHeaderEntry(key: String = "", value: String = "") {
         val view = layoutInflater.inflate(R.layout.header_entry, null)
         val etKey = view.findViewById<EditText>(R.id.etHeaderKey)

flomo-ai/app/src/main/res/layout/activity_second.xml

@@ -229,6 +229,37 @@
                         android:textSize="16sp" />
                 </LinearLayout>
 
+                <!-- 测试连接按钮和状态 -->
+                <LinearLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="16dp"
+                    android:orientation="horizontal"
+                    android:gravity="center_vertical">
+
+                    <Button
+                        android:id="@+id/btnTestConnection"
+                        android:layout_width="0dp"
+                        android:layout_height="40dp"
+                        android:layout_weight="1"
+                        android:text="测试连接"
+                        android:textSize="14sp"
+                        android:textColor="@color/white"
+                        android:background="@drawable/button_primary_bg"
+                        android:minWidth="0dp"
+                        android:minHeight="0dp"
+                        android:layout_marginEnd="8dp"/>
+
+                    <TextView
+                        android:id="@+id/tvTestStatus"
+                        android:layout_width="0dp"
+                        android:layout_height="wrap_content"
+                        android:layout_weight="2"
+                        android:textSize="12sp"
+                        android:textColor="@color/text_hint"
+                        android:text="点击测试连接"/>
+                </LinearLayout>
+
             </LinearLayout>
         </androidx.cardview.widget.CardView>