feat: add basic deletion finding

internal/server/database/utility.go

@@ -0,0 +1,38 @@
+package database
+
+import (
+	"fmt"
+	"io"
+	"log/slog"
+	"orbits-server/internal/shared/utility"
+	"path/filepath"
+)
+
+// it has been made more general for DRY purposes
+// this function should only be called after manually checking the filetype
+func BuildFileRecord(r io.Reader, origName string, contentDirectory string) (File, error) {
+	ext := filepath.Ext(origName)
+	category := utility.CategorizeMediaType(ext)
+	if category == utility.Unspecified {
+		return File{}, fmt.Errorf("unsupported filetype")
+	}
+
+	checksum, err := utility.GenerateHashFromReader(r)
+	if err != nil {
+		slog.Error("failed to calculate hash of file at given path", "error", err)
+		return File{}, err
+	}
+
+	safeName := utility.GenerateSafeName(category, ext)
+	destPath := filepath.Join(contentDirectory, safeName)
+
+	f := File{
+		MediaType: category,
+		MetaName:  origName,
+		FileName:  safeName,
+		FilePath:  destPath,
+		Checksum:  checksum,
+	}
+
+	return f, nil
+}