restructuring; setting up basic webserver and templating

internal/data/FileDatastore.go

@@ -12,6 +12,7 @@ import (
 // a simple text file to the data as json.
 type FileDatastore struct {
     path string
+    data map[string]string
 }
 
 // Creates a new FileDatastore object, creating the storage file in the
@@ -30,6 +31,10 @@ func NewFileDatastore(path string) (*FileDatastore, error) {
 // an error, if the file does not exit or the file content can not be
 // converted.
 func (fds *FileDatastore) readMapObj() (map[string]string, error) {
+    if fds.data != nil {
+        return fds.data, nil
+    }
+
     dat, err := os.ReadFile(fds.path)
     if err != nil { return nil, err }
 
@@ -50,6 +55,8 @@ func (fds *FileDatastore) writeMapObj(m map[string]string) error {
     encoder := json.NewEncoder(file)
     if err := encoder.Encode(m); err != nil { return err }
 
+    fds.data = m
+
     return nil
 }