package render

import "fmt"

const FormatMarkdown = "markdown"

// Options configures rendering behavior across formats.
type Options struct {
	Title             string
	IncludeTimestamps bool
	IncludeSegmentIDs bool
	IncludeMetadata   bool
}

// Renderer turns a normalized render model into text output.
type Renderer interface {
	Render(transcript Transcript, opts Options) (string, error)
}

// Registry resolves renderers by public format name.
type Registry struct {
	renderers map[string]Renderer
}

// NewRegistry returns a renderer registry with built-in renderers.
func NewRegistry() Registry {
	return Registry{
		renderers: map[string]Renderer{
			FormatMarkdown: MarkdownRenderer{},
		},
	}
}

// Resolve resolves a renderer by format name.
func (registry Registry) Resolve(format string) (Renderer, error) {
	renderer, ok := registry.renderers[format]
	if !ok {
		return nil, fmt.Errorf("unsupported --format %q", format)
	}
	return renderer, nil
}