sync

internal/fit/validator.go

@@ -0,0 +1,21 @@
+package fit
+
+// Validate performs basic validation of FIT file structure
+func Validate(data []byte) bool {
+	// Minimum FIT file size is 14 bytes (header)
+	if len(data) < 14 {
+		return false
+	}
+	
+	// Check magic number: ".FIT"
+	if string(data[8:12]) != ".FIT" {
+		return false
+	}
+	
+	return true
+}
+
+// MinFileSize returns the minimum size of a valid FIT file
+func MinFileSize() int {
+	return 14
+}