add simple transcription with adapters

internal/transcriber/transcriber.go

@@ -2,38 +2,60 @@ package transcriber
 
 import (
 	"context"
-	"time"
+	"fmt"
 
 	"github.com/leonardotrapani/hyprvoice/internal/recording"
 )
 
-type TranscriptionResult struct {
-	Text      string
-	Timestamp time.Time
-	IsFinal   bool
-}
-
+// Main transcriber interface
 type Transcriber interface {
 	Start(ctx context.Context, frameCh <-chan recording.AudioFrame) (<-chan error, error)
-	Stop() error
+	Stop(ctx context.Context) error
 	GetTranscription() (string, error)
 }
 
+// Adapter interface for different transcription backends
+type TranscriptionAdapter interface {
+	Transcribe(ctx context.Context, audioData []byte) (string, error)
+}
+
+// Configuration for the transcriber
 type Config struct {
-	Provider   string
-	APIKey     string
-	Language   string
-	ChunkSize  int
-	BufferTime time.Duration
-	Model      string
+	Provider string
+	APIKey   string
+	Language string
+	Model    string
 }
 
 func DefaultConfig() Config {
 	return Config{
-		Provider:   "openai",
-		Language:   "it",
-		ChunkSize:  16384,
-		BufferTime: 2 * time.Second,
-		Model:      "whisper-1",
+		Provider: "openai",
+		Language: "it",
+		Model:    "whisper-1",
 	}
 }
+
+// NewTranscriber creates a new simple transcriber
+func NewTranscriber(config Config) (Transcriber, error) {
+	// Create the appropriate adapter
+	var adapter TranscriptionAdapter
+
+	switch config.Provider {
+	case "openai":
+		if config.APIKey == "" {
+			return nil, fmt.Errorf("OpenAI API key required")
+		}
+		adapter = NewOpenAIAdapter(config)
+
+	case "whisper.cpp":
+		adapter = NewWhisperCppAdapter(config)
+
+	default:
+		return nil, fmt.Errorf("unsupported provider: %s", config.Provider)
+	}
+
+	// Create simple transcriber that collects all audio
+	transcriber := NewSimpleTranscriber(config, adapter)
+
+	return transcriber, nil
+}