Fix Gemini audio provider defaults

3 files changed, 13 insertions, 11 deletions

diff --git a/internal/audio/gemini_provider.go b/internal/audio/gemini_provider.go
index 9900005..8d0c517 100644
--- a/internal/audio/gemini_provider.go
+++ b/internal/audio/gemini_provider.go
@@ -14,7 +14,7 @@ import (
 )
 
 const (
-	defaultGeminiTTSModel  = "gemini-2.5-flash-preview-tts"
+	defaultGeminiTTSModel  = "gemini-2.5-flash"
 	geminiTTSLanguageCode  = "bg"
 	geminiTTSChannels      = 1
 	geminiTTSSampleRate    = 24000
diff --git a/internal/audio/provider.go b/internal/audio/provider.go
index 334e709..d750f31 100644
--- a/internal/audio/provider.go
+++ b/internal/audio/provider.go
@@ -17,7 +17,7 @@ type Provider interface {
 	IsAvailable() error
 }
 
-// Config holds common configuration for audio providers
+// Config holds common configuration for audio providers.
 type Config struct {
 	Provider     string // Provider name: "openai" or "gemini"
 	OutputDir    string // Directory for output files
@@ -32,7 +32,7 @@ type Config struct {
 
 	// Gemini-specific settings
 	GoogleAPIKey   string
-	GeminiTTSModel string  // "gemini-2.5-flash-preview-tts"
+	GeminiTTSModel string  // "gemini-2.5-flash"
 	GeminiVoice    string  // One of GeminiVoices, or empty for the model default.
 	GeminiSpeed    float64 // Prompt hint for desired speech speed
 }
@@ -40,7 +40,7 @@ type Config struct {
 // DefaultConfig returns default configuration
 func DefaultProviderConfig() *Config {
 	return &Config{
-		Provider:     "openai",
+		Provider:     "gemini",
 		OutputDir:    "./",
 		OutputFormat: "mp3",
 		OpenAIModel:  "gpt-4o-mini-tts", // New model with voice instructions support
@@ -48,7 +48,7 @@ func DefaultProviderConfig() *Config {
 		OpenAISpeed:  1.0,
 		// OpenAISpeed:       0.98, // Default speed for clarity
 		OpenAIInstruction: "You are speaking Bulgarian language (български език). Pronounce the Bulgarian text with authentic Bulgarian phonetics, not Russian. Speak slowly and clearly for language learners.",
-		GeminiTTSModel:    "gemini-2.5-flash-preview-tts",
+		GeminiTTSModel:    "gemini-2.5-flash",
 		GeminiSpeed:       1.0,
 	}
 }
@@ -70,7 +70,6 @@ func NewProvider(config *Config) (Provider, error) {
 			return nil, fmt.Errorf("Google API key is required")
 		}
 		return NewGeminiProvider(config)
-
 	default:
 		return nil, fmt.Errorf("unknown audio provider: %s", config.Provider)
 	}
diff --git a/internal/audio/provider_test.go b/internal/audio/provider_test.go
index 4c8d911..0b04d20 100644
--- a/internal/audio/provider_test.go
+++ b/internal/audio/provider_test.go
@@ -30,8 +30,8 @@ func (m *mockProvider) IsAvailable() error {
 func TestDefaultProviderConfig(t *testing.T) {
 	config := DefaultProviderConfig()
 
-	if config.Provider != "openai" {
-		t.Errorf("Expected provider 'openai', got '%s'", config.Provider)
+	if config.Provider != "gemini" {
+		t.Errorf("Expected provider 'gemini', got '%s'", config.Provider)
 	}
 
 	if config.OutputFormat != "mp3" {
@@ -50,10 +50,13 @@ func TestDefaultProviderConfig(t *testing.T) {
 		t.Errorf("Expected OpenAI speed 1.0, got %f", config.OpenAISpeed)
 	}
 
-	if config.GeminiTTSModel != "gemini-2.5-flash-preview-tts" {
-		t.Errorf("Expected Gemini TTS model 'gemini-2.5-flash-preview-tts', got '%s'", config.GeminiTTSModel)
+	if config.GeminiTTSModel != "gemini-2.5-flash" {
+		t.Errorf("Expected Gemini TTS model 'gemini-2.5-flash', got '%s'", config.GeminiTTSModel)
 	}
 
+	if config.GeminiSpeed != 1.0 {
+		t.Errorf("Expected Gemini speed 1.0, got %f", config.GeminiSpeed)
+	}
 }
 
 func TestNewProvider(t *testing.T) {
@@ -68,7 +71,7 @@ func TestNewProvider(t *testing.T) {
 			name:    "nil config uses defaults",
 			config:  nil,
 			wantErr: true,
-			errMsg:  "OpenAI API key is required",
+			errMsg:  "Google API key is required",
 		},
 		{
 			name: "openai provider without key",