zg: extract shared audio voice lists

3 files changed, 84 insertions, 2 deletions

diff --git a/internal/audio/provider.go b/internal/audio/provider.go
index b961482..334e709 100644
--- a/internal/audio/provider.go
+++ b/internal/audio/provider.go
@@ -26,14 +26,14 @@ type Config struct {
 	// OpenAI-specific settings
 	OpenAIKey         string
 	OpenAIModel       string  // "tts-1", "tts-1-hd", or "gpt-4o-mini-tts"
-	OpenAIVoice       string  // "alloy", "ash", "ballad", "coral", "echo", "fable", "onyx", "nova", "sage", "shimmer", "verse"
+	OpenAIVoice       string  // One of OpenAIVoices.
 	OpenAISpeed       float64 // 0.25 to 4.0
 	OpenAIInstruction string  // Voice instructions for gpt-4o-mini-tts model
 
 	// Gemini-specific settings
 	GoogleAPIKey   string
 	GeminiTTSModel string  // "gemini-2.5-flash-preview-tts"
-	GeminiVoice    string  // Prebuilt Gemini TTS voice name, or empty for the model default
+	GeminiVoice    string  // One of GeminiVoices, or empty for the model default.
 	GeminiSpeed    float64 // Prompt hint for desired speech speed
 }
 
diff --git a/internal/audio/voices.go b/internal/audio/voices.go
new file mode 100644
index 0000000..9a96c76
--- /dev/null
+++ b/internal/audio/voices.go
@@ -0,0 +1,46 @@
+package audio
+
+// OpenAIVoices lists the OpenAI voices supported by the app.
+var OpenAIVoices = []string{
+	"alloy",
+	"ash",
+	"ballad",
+	"coral",
+	"echo",
+	"fable",
+	"onyx",
+	"nova",
+	"sage",
+	"shimmer",
+	"verse",
+}
+
+// GeminiVoices lists the Gemini prebuilt voices supported by the app.
+var GeminiVoices = []string{
+	"Zephyr",
+	"Puck",
+	"Charon",
+	"Kore",
+	"Fenrir",
+	"Leda",
+	"Orus",
+	"Aoede",
+	"Callirrhoe",
+	"Autonoe",
+	"Enceladus",
+	"Iapetus",
+	"Umbriel",
+	"Algieba",
+	"Despina",
+	"Erinome",
+	"Gacrux",
+	"Pulcherrima",
+	"Achernar",
+	"Rasalgethi",
+	"Laomedeia",
+	"Sadachbia",
+	"Schedar",
+	"Sulafat",
+	"Vindemiatrix",
+	"Zubenelgenubi",
+}
diff --git a/internal/audio/voices_test.go b/internal/audio/voices_test.go
new file mode 100644
index 0000000..121f328
--- /dev/null
+++ b/internal/audio/voices_test.go
@@ -0,0 +1,36 @@
+package audio
+
+import (
+	"reflect"
+	"testing"
+)
+
+func TestVoiceLists(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		name string
+		got  []string
+		want []string
+	}{
+		{
+			name: "openai",
+			got:  OpenAIVoices,
+			want: []string{"alloy", "ash", "ballad", "coral", "echo", "fable", "onyx", "nova", "sage", "shimmer", "verse"},
+		},
+		{
+			name: "gemini",
+			got:  GeminiVoices,
+			want: []string{"Zephyr", "Puck", "Charon", "Kore", "Fenrir", "Leda", "Orus", "Aoede", "Callirrhoe", "Autonoe", "Enceladus", "Iapetus", "Umbriel", "Algieba", "Despina", "Erinome", "Gacrux", "Pulcherrima", "Achernar", "Rasalgethi", "Laomedeia", "Sadachbia", "Schedar", "Sulafat", "Vindemiatrix", "Zubenelgenubi"},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
+			if !reflect.DeepEqual(tt.got, tt.want) {
+				t.Fatalf("%s voice list mismatch\nwant: %#v\ngot:  %#v", tt.name, tt.want, tt.got)
+			}
+		})
+	}
+}