refactor(model): replace switch-based ModelFactory with strategy pattern

data-agent-backend/src/main/java/io/github/malonetalk/agent/AgentService.java

@@ -24,36 +24,31 @@
 import io.agentscope.core.message.Msg;
 import io.agentscope.core.session.Session;
 import io.agentscope.core.tool.Toolkit;
+import io.github.malonetalk.agent.models.ModelFactory;
+import io.github.malonetalk.agent.models.ModelProperties;
 import io.github.malonetalk.agent.tools.MarkAgentTool;
 import io.github.malonetalk.convertor.EventConverter;
 import io.github.malonetalk.dto.ChatStreamEvent;
 import io.github.malonetalk.utils.MsgUtils;
 import jakarta.annotation.PostConstruct;
 import java.util.List;
+import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 import reactor.core.publisher.Flux;
 import reactor.core.scheduler.Schedulers;
 
 @Slf4j
 @Service
+@RequiredArgsConstructor
 public class AgentService {
 
     private final ModelFactory modelFactory;
+    private final List<MarkAgentTool> allToolBeans;
+    private final ModelProperties modelProperties;
     private final SessionService sessionService;
     private Toolkit toolkit;
 
-    private final List<MarkAgentTool> allToolBeans;
-
-    public AgentService(
-            ModelFactory modelFactory,
-            SessionService sessionService,
-            List<MarkAgentTool> allToolBeans) {
-        this.modelFactory = modelFactory;
-        this.sessionService = sessionService;
-        this.allToolBeans = allToolBeans;
-    }
-
     @PostConstruct
     public void init() {
         this.toolkit = new Toolkit();
@@ -109,7 +104,7 @@ private ReActAgent createAgent() {
                         5. 根据查询结果回答用户问题
                         注意：仅支持 SELECT 查询，不支持修改操作。生成SQL时请务必先查看表结构，确保列名和类型正确。
                         """)
-                .model(modelFactory.createModel())
+                .model(modelFactory.getInstance(modelProperties))
                 .toolkit(toolkit)
                 .memory(new InMemoryMemory())
                 .maxIters(10)

data-agent-backend/src/main/java/io/github/malonetalk/agent/models/AnthropicModelProvider.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2026 github.com/MaloneTalk
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ * limitations under the License.
+ */
+package io.github.malonetalk.agent.models;
+
+import io.agentscope.core.model.AnthropicChatModel;
+import io.agentscope.core.model.Model;
+import org.springframework.stereotype.Component;
+
+@Component
+public class AnthropicModelProvider implements ModelProvider {
+    @Override
+    public String provider() {
+        return "anthropic";
+    }
+
+    @Override
+    public Model createModel(ModelConfig config) {
+        return AnthropicChatModel.builder()
+                .apiKey(config.getApiKey())
+                .modelName(config.getName())
+                .stream(true)
+                .build();
+    }
+}

data-agent-backend/src/main/java/io/github/malonetalk/agent/models/DashscopeModelProvider.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2026 github.com/MaloneTalk
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ * limitations under the License.
+ */
+package io.github.malonetalk.agent.models;
+
+import io.agentscope.core.model.DashScopeChatModel;
+import io.agentscope.core.model.Model;
+import org.springframework.stereotype.Component;
+
+@Component
+public class DashscopeModelProvider implements ModelProvider {
+
+    @Override
+    public String provider() {
+        return "dashscope";
+    }
+
+    @Override
+    public Model createModel(ModelConfig config) {
+        return DashScopeChatModel.builder()
+                .apiKey(config.getApiKey())
+                .modelName(config.getName())
+                .stream(true)
+                .enableThinking(true)
+                .build();
+    }
+}

data-agent-backend/src/main/java/io/github/malonetalk/agent/models/DefaultModelFactoryImpl.java

@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2026 github.com/MaloneTalk
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ * limitations under the License.
+ */
+package io.github.malonetalk.agent.models;
+
+import io.agentscope.core.model.Model;
+import java.util.List;
+import java.util.Map;
+import java.util.function.Function;
+import java.util.stream.Collectors;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+import org.springframework.util.StringUtils;
+
+@Component
+public class DefaultModelFactoryImpl implements ModelFactory {
+
+    private final Map<String, ModelProvider> providerMap;
+
+    @Autowired
+    public DefaultModelFactoryImpl(List<ModelProvider> providers) {
+        providerMap =
+                providers.stream()
+                        .collect(
+                                Collectors.toUnmodifiableMap(
+                                        ModelProvider::provider,
+                                        Function.identity(),
+                                        (v1, v2) -> {
+                                            throw new IllegalStateException(
+                                                    "Provider "
+                                                            + v1.provider()
+                                                            + " should be only one instance! Now"
+                                                            + " there are at least two instance: "
+                                                            + v1.getClass().getName()
+                                                            + " and "
+                                                            + v2.getClass().getName());
+                                        }));
+    }
+
+    @Override
+    public Model getInstance(ModelConfig config) {
+        if (!StringUtils.hasText(config.getProvider())) {
+            throw new IllegalArgumentException("provider should not be empty!");
+        }
+        ModelProvider provider = providerMap.get(config.getProvider());
+        if (provider == null) {
+            throw new IllegalArgumentException(
+                    "Illegal provider argument: " + config.getProvider());
+        }
+        return provider.createModel(config);
+    }
+}

data-agent-backend/src/main/java/io/github/malonetalk/agent/models/ModelConfig.java

@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2026 github.com/MaloneTalk
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ * limitations under the License.
+ */
+package io.github.malonetalk.agent.models;
+
+import lombok.Data;
+
+@Data
+public class ModelConfig {
+
+    private String provider;
+
+    private String name;
+
+    private String baseUrl;
+
+    private String apiKey;
+}

data-agent-backend/src/main/java/io/github/malonetalk/agent/models/ModelFactory.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2026 github.com/MaloneTalk
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ * limitations under the License.
+ */
+package io.github.malonetalk.agent.models;
+
+import io.agentscope.core.model.Model;
+
+public interface ModelFactory {
+
+    Model getInstance(ModelConfig config);
+}

data-agent-backend/src/main/java/io/github/malonetalk/agent/models/ModelProperties.java

@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2026 github.com/MaloneTalk
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ * limitations under the License.
+ */
+package io.github.malonetalk.agent.models;
+
+import io.github.malonetalk.common.Constants;
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.stereotype.Component;
+
+// TODO: 之后从yml硬编码配置改为可由用户通过http接口修改的配置
+@Component
+@ConfigurationProperties(prefix = Constants.PROPERTIES_PREFIX + ".model")
+public class ModelProperties extends ModelConfig {}