feat: refactor watchdog

internal/server/watchdog/scanner.go

@@ -0,0 +1,57 @@
+package watchdog
+
+import (
+	"orbits-server/internal/server/bootstrap"
+	"orbits-server/internal/server/database"
+	"os"
+	"path/filepath"
+
+	"gorm.io/gorm"
+)
+
+func reconcile(fs map[string]struct{}, db map[string]database.File) Result {
+	r := Result{}
+
+	for path := range fs {
+		if _, ok := db[path]; !ok {
+			r.FSOrphans = append(r.FSOrphans, path)
+		}
+	}
+
+	for path, f := range db {
+		if _, ok := fs[path]; !ok {
+			r.DBOrphans = append(r.DBOrphans, f)
+		}
+	}
+
+	return r
+}
+
+func scanFS(env bootstrap.Environment) (map[string]struct{}, error) {
+	fsFiles, err := os.ReadDir(env.ContentDirectory)
+	if err != nil {
+		return nil, err
+	}
+
+	res := make(map[string]struct{})
+	for _, f := range fsFiles {
+		full := filepath.Join(env.ContentDirectory, f.Name())
+		res[full] = struct{}{}
+	}
+
+	return res, nil
+}
+
+func scanDB(db *gorm.DB) (map[string]database.File, error) {
+	files, err := database.ListFiles(db)
+	if err != nil {
+		return nil, err
+	}
+
+	res := make(map[string]database.File)
+	for _, f := range files {
+		res[f.FilePath] = f
+	}
+
+	return res, nil
+}