narratio/main.go

package main

import (
	"fmt"
	"os"
	"path/filepath"
)

type File struct {
	Path string
}

func main() {
	scenes, err := getScenes()
	if err != nil {
		fmt.Println(err)
		os.Exit(1)
	}

	for _, scene := range scenes {
		fmt.Println(scene.Path)
	}
}

func getScenes() ([]File, error) {
	scenes := make([]File, 0)
	root := "content"
	err := filepath.Walk(root, func(path string, info os.FileInfo, err error) error {
		if err != nil {
			return err
		}
		if !info.IsDir() {
			if filepath.Ext(path) == ".md" {
				scenes = append(scenes, File{Path: path})
			}
		}
		return nil
	})
	if err != nil {
		fmt.Printf("error walking the path %v: %v\n", root, err)
	}

	return scenes, nil
}