Initial backend api

backend/internal/api/handlers.go

@@ -0,0 +1,36 @@
+package api
+
+import (
+	"encoding/json"
+	"net/http"
+	"strings"
+
+	"novamd/internal/filesystem"
+)
+
+func ListFiles(fs *filesystem.FileSystem) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		files, err := fs.ListFilesRecursively()
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		w.Header().Set("Content-Type", "application/json")
+		json.NewEncoder(w).Encode(files)
+	}
+}
+
+func GetFileContent(fs *filesystem.FileSystem) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		filePath := strings.TrimPrefix(r.URL.Path, "/api/v1/files/")
+		content, err := fs.GetFileContent(filePath)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusNotFound)
+			return
+		}
+
+		w.Header().Set("Content-Type", "text/plain")
+		w.Write(content)
+	}
+}

backend/internal/filesystem/filesystem.go

@@ -0,0 +1,37 @@
+package filesystem
+
+import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+)
+
+type FileSystem struct {
+	RootDir string
+}
+
+func New(rootDir string) *FileSystem {
+	return &FileSystem{RootDir: rootDir}
+}
+
+func (fs *FileSystem) ListFilesRecursively() ([]string, error) {
+	var files []string
+
+	err := filepath.Walk(fs.RootDir, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if !info.IsDir() {
+			relPath, _ := filepath.Rel(fs.RootDir, path)
+			files = append(files, relPath)
+		}
+		return nil
+	})
+
+	return files, err
+}
+
+func (fs *FileSystem) GetFileContent(filePath string) ([]byte, error) {
+	fullPath := filepath.Join(fs.RootDir, filePath)
+	return ioutil.ReadFile(fullPath)
+}