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package audio
import (
"fmt"
"path/filepath"
"strings"
"time"
)
// AttributionParams describes metadata included in generated audio attribution files.
type AttributionParams struct {
Word string
Model string
Voice string
Instruction string
ProcessedText string
Speed float64
GeneratedAt time.Time
}
// AttributionParamsFrom builds an AttributionParams from a flat Config and the
// word being transcribed, reading provider-appropriate sub-config fields to
// eliminate the need for callers to switch on config.Provider themselves.
func AttributionParamsFrom(config *Config, word, instruction, processedText string, generatedAt time.Time) AttributionParams {
base := AttributionParams{
Word: word,
Instruction: instruction,
ProcessedText: processedText,
GeneratedAt: generatedAt,
}
if config == nil {
return base
}
switch strings.ToLower(strings.TrimSpace(config.Provider)) {
case "gemini":
g := geminiAudioConfigFrom(config)
base.Model = g.TTSModel
base.Voice = g.Voice
base.Speed = g.Speed
default:
o := openAIAudioConfigFrom(config)
base.Model = o.Model
base.Voice = o.Voice
base.Speed = o.Speed
}
return base
}
// AttributionPath returns the sidecar attribution file path for a generated audio file.
func AttributionPath(audioFile string) string {
return strings.TrimSuffix(audioFile, filepath.Ext(audioFile)) + "_attribution.txt"
}
// BuildOpenAIAttribution builds the attribution content for OpenAI-generated audio.
func BuildOpenAIAttribution(params AttributionParams) string {
return buildAttribution("Audio generated by OpenAI TTS", params)
}
// BuildGeminiAttribution builds the attribution content for Gemini-generated audio.
func BuildGeminiAttribution(params AttributionParams) string {
return buildAttribution("Audio generated by Google Gemini TTS", params)
}
func buildAttribution(header string, params AttributionParams) string {
var b strings.Builder
b.WriteString(header)
b.WriteString("\n\n")
fmt.Fprintf(&b, "Bulgarian word: %s\n", params.Word)
fmt.Fprintf(&b, "Model: %s\n", params.Model)
fmt.Fprintf(&b, "Voice: %s\n", params.Voice)
fmt.Fprintf(&b, "Speed: %.2f\n", params.Speed)
if params.Instruction != "" {
fmt.Fprintf(&b, "\nVoice instructions:\n%s\n", params.Instruction)
}
if params.ProcessedText != "" {
fmt.Fprintf(&b, "\nProcessed text sent to TTS: %s\n", params.ProcessedText)
}
generatedAt := params.GeneratedAt
if generatedAt.IsZero() {
generatedAt = time.Now()
}
fmt.Fprintf(&b, "\nGenerated at: %s\n", generatedAt.Format("2006-01-02 15:04:05"))
return b.String()
}
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