Refactor[Go Model Provider]: refactor baseURL and modelConfig (#15627)

### What problem does this PR solve?

As Title

### Type of change

- [x] Refactoring

internal/entity/models/orcarouter.go

@@ -30,28 +30,28 @@ import (
 )
 
 type OrcaRouterModel struct {
-	BaseURL    map[string]string
-	URLSuffix  URLSuffix
-	httpClient *http.Client
+	baseModel BaseModel
 }
 
 func NewOrcaRouterModel(baseURL map[string]string, urlSuffix URLSuffix) *OrcaRouterModel {
 	return &OrcaRouterModel{
-		BaseURL:   baseURL,
-		URLSuffix: urlSuffix,
-		httpClient: &http.Client{
-			Transport: &http.Transport{
-				MaxIdleConns:        100,
-				MaxIdleConnsPerHost: 10,
-				IdleConnTimeout:     90 * time.Second,
-				DisableCompression:  false,
+		baseModel: BaseModel{
+			BaseURL:   baseURL,
+			URLSuffix: urlSuffix,
+			httpClient: &http.Client{
+				Transport: &http.Transport{
+					MaxIdleConns:        100,
+					MaxIdleConnsPerHost: 10,
+					IdleConnTimeout:     90 * time.Second,
+					DisableCompression:  false,
+				},
 			},
 		},
 	}
 }
 
 func (o *OrcaRouterModel) NewInstance(baseURL map[string]string) ModelDriver {
-	return nil
+	return NewOrcaRouterModel(baseURL, o.baseModel.URLSuffix)
 }
 
 func (o *OrcaRouterModel) Name() string {
@@ -59,19 +59,18 @@ func (o *OrcaRouterModel) Name() string {
 }
 
 func (o *OrcaRouterModel) ChatWithMessages(modelName string, messages []Message, apiConfig *APIConfig, chatModelConfig *ChatConfig) (*ChatResponse, error) {
-	if apiConfig == nil || apiConfig.ApiKey == nil || *apiConfig.ApiKey == "" {
-		return nil, fmt.Errorf("api key is nil or empty")
+	if err := o.baseModel.APIConfigCheck(apiConfig); err != nil {
+		return nil, err
 	}
 	if len(messages) == 0 {
 		return nil, fmt.Errorf("messages is empty")
 	}
 
-	var region = "default"
-	if apiConfig.Region != nil && *apiConfig.Region != "" {
-		region = *apiConfig.Region
+	resolvedBaseURL, err := o.baseModel.GetBaseURL(apiConfig)
+	if err != nil {
+		return nil, err
 	}
-
-	url := fmt.Sprintf("%s/%s", o.BaseURL[region], o.URLSuffix.Chat)
+	url := fmt.Sprintf("%s/%s", resolvedBaseURL, o.baseModel.URLSuffix.Chat)
 
 	// Convert messages to API format
 	apiMessages := make([]map[string]interface{}, len(messages))
@@ -128,7 +127,7 @@ func (o *OrcaRouterModel) ChatWithMessages(modelName string, messages []Message,
 	req.Header.Add("Content-Type", "application/json")
 	req.Header.Add("Authorization", fmt.Sprintf("Bearer %s", *apiConfig.ApiKey))
 
-	resp, err := o.httpClient.Do(req)
+	resp, err := o.baseModel.httpClient.Do(req)
 	if err != nil {
 		return nil, fmt.Errorf("failed to send request: %w", err)
 	}
@@ -180,16 +179,19 @@ func (o *OrcaRouterModel) ChatWithMessages(modelName string, messages []Message,
 }
 
 func (o *OrcaRouterModel) ChatStreamlyWithSender(modelName string, messages []Message, apiConfig *APIConfig, modelConfig *ChatConfig, sender func(*string, *string) error) error {
+	if err := o.baseModel.APIConfigCheck(apiConfig); err != nil {
+		return err
+	}
+
 	if len(messages) == 0 {
 		return fmt.Errorf("messages is empty")
 	}
 
-	var region = "default"
-	if apiConfig != nil && apiConfig.Region != nil && *apiConfig.Region != "" {
-		region = *apiConfig.Region
+	resolvedBaseURL, err := o.baseModel.GetBaseURL(apiConfig)
+	if err != nil {
+		return err
 	}
-
-	url := fmt.Sprintf("%s/%s", o.BaseURL[region], o.URLSuffix.Chat)
+	url := fmt.Sprintf("%s/%s", resolvedBaseURL, o.baseModel.URLSuffix.Chat)
 
 	// Convert messages to API format
 	apiMessages := make([]map[string]interface{}, len(messages))
@@ -245,7 +247,7 @@ func (o *OrcaRouterModel) ChatStreamlyWithSender(modelName string, messages []Me
 	req.Header.Set("Content-Type", "application/json")
 	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", *apiConfig.ApiKey))
 
-	resp, err := o.httpClient.Do(req)
+	resp, err := o.baseModel.httpClient.Do(req)
 	if err != nil {
 		return fmt.Errorf("failed to send request: %w", err)
 	}
@@ -336,16 +338,19 @@ func (o *OrcaRouterModel) TranscribeAudioWithSender(modelName *string, file *str
 }
 
 func (o *OrcaRouterModel) AudioSpeech(modelName *string, audioContent *string, apiConfig *APIConfig, ttsConfig *TTSConfig) (*TTSResponse, error) {
+	if err := o.baseModel.APIConfigCheck(apiConfig); err != nil {
+		return nil, err
+	}
+
 	if audioContent == nil || *audioContent == "" {
 		return nil, fmt.Errorf("audio content is empty")
 	}
 
-	var region = "default"
-	if apiConfig != nil && apiConfig.Region != nil && *apiConfig.Region != "" {
-		region = *apiConfig.Region
+	resolvedBaseURL, err := o.baseModel.GetBaseURL(apiConfig)
+	if err != nil {
+		return nil, err
 	}
-
-	url := fmt.Sprintf("%s/%s", o.BaseURL[region], o.URLSuffix.TTS)
+	url := fmt.Sprintf("%s/%s", resolvedBaseURL, o.baseModel.URLSuffix.TTS)
 
 	reqBody := map[string]interface{}{
 		"model":  *modelName,
@@ -378,7 +383,7 @@ func (o *OrcaRouterModel) AudioSpeech(modelName *string, audioContent *string, a
 	req.Header.Set("Content-Type", "application/json")
 	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", *apiConfig.ApiKey))
 
-	resp, err := o.httpClient.Do(req)
+	resp, err := o.baseModel.httpClient.Do(req)
 	if err != nil {
 		return nil, fmt.Errorf("failed to send request: %w", err)
 	}
@@ -409,12 +414,15 @@ func (o *OrcaRouterModel) ParseFile(modelName *string, content []byte, url *stri
 }
 
 func (o *OrcaRouterModel) ListModels(apiConfig *APIConfig) ([]string, error) {
-	var region = "default"
-	if apiConfig != nil && apiConfig.Region != nil && *apiConfig.Region != "" {
-		region = *apiConfig.Region
+	if err := o.baseModel.APIConfigCheck(apiConfig); err != nil {
+		return nil, err
 	}
 
-	url := fmt.Sprintf("%s/%s", o.BaseURL[region], o.URLSuffix.Models)
+	resolvedBaseURL, err := o.baseModel.GetBaseURL(apiConfig)
+	if err != nil {
+		return nil, err
+	}
+	url := fmt.Sprintf("%s/%s", resolvedBaseURL, o.baseModel.URLSuffix.Models)
 
 	reqBody := map[string]string{}
 
@@ -434,7 +442,7 @@ func (o *OrcaRouterModel) ListModels(apiConfig *APIConfig) ([]string, error) {
 	req.Header.Set("Content-Type", "application/json")
 	req.Header.Set("Authorization", fmt.Sprintf("Bearer %s", *apiConfig.ApiKey))
 
-	resp, err := o.httpClient.Do(req)
+	resp, err := o.baseModel.httpClient.Do(req)
 	if err != nil {
 		return nil, fmt.Errorf("failed to send request: %w", err)
 	}