Add mapper for mapping blocks to form body data

[MAILPOET-2451]

assets/js/src/form_editor/store/blocks_to_form_body.jsx

@@ -0,0 +1,35 @@
+export default (blocks) => {
+  let position = 1;
+  return blocks.map((block) => {
+    const mapped = {
+      params: {},
+    };
+    switch (block.name) {
+      case 'mailpoet-form/email-input':
+        mapped.id = 'email';
+        mapped.type = 'text';
+        mapped.unique = '0';
+        mapped.static = '1';
+        mapped.name = 'Email';
+        mapped.params.label = block.attributes.label;
+        mapped.params.required = '1';
+        if (block.attributes.labelWithinInput) {
+          mapped.params.label_within = '1';
+        }
+        break;
+      case 'mailpoet-form/submit-button':
+        mapped.id = 'submit';
+        mapped.type = 'submit';
+        mapped.name = 'Submit';
+        mapped.unique = '0';
+        mapped.static = '1';
+        mapped.params.label = block.attributes.label;
+        break;
+      default:
+        return null;
+    }
+    mapped.position = position.toString();
+    position += 1;
+    return mapped;
+  }).filter(Boolean);
+};