feat: manually mirror opencoze's code from bytedance

Change-Id: I09a73aadda978ad9511264a756b2ce51f5761adf

backend/infra/contract/chatmodel/chat_model.go

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2025 coze-dev Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package chatmodel
+
+import (
+	"context"
+
+	"github.com/cloudwego/eino/components/model"
+)
+
+//go:generate  mockgen -destination ../../../internal/mock/infra/contract/chatmodel/base_model_mock.go -package mock -source ${GOPATH}/src/github.com/cloudwego/eino/components/model/interface.go BaseChatModel
+type BaseChatModel = model.BaseChatModel
+
+//go:generate  mockgen -destination ../../../internal/mock/infra/contract/chatmodel/toolcalling_model_mock.go -package mock -source ${GOPATH}/src/github.com/cloudwego/eino/components/model/interface.go ToolCallingChatModel
+type ToolCallingChatModel = model.ToolCallingChatModel
+
+//go:generate  mockgen -destination ../../../internal/mock/infra/contract/chatmodel/chat_model_factory_mock.go -package mock -source chat_model.go Factory
+type Factory interface {
+	CreateChatModel(ctx context.Context, protocol Protocol, config *Config) (ToolCallingChatModel, error)
+	SupportProtocol(protocol Protocol) bool
+}