1 files changed, 45 insertions, 0 deletions
diff --git a/src/data/files/group.js b/src/data/files/group.js
new file mode 100644
index 00000000..c10cbf98
--- /dev/null
+++ b/src/data/files/group.js
@@ -0,0 +1,45 @@
+import Thing from '#thing';
+
+export default ({
+  documentModes: {allInOne},
+  thingConstructors: {Group, GroupCategory},
+}) => ({
+  title: `Process groups file`,
+  file: 'groups.yaml',
+
+  documentMode: allInOne,
+  documentThing: document =>
+    ('Category' in document
+      ? GroupCategory
+      : Group),
+
+  connect(results) {
+    let groupCategory;
+    let groupRefs = [];
+
+    if (results[0] && !(results[0] instanceof GroupCategory)) {
+      throw new Error(`Expected a category at top of group data file`);
+    }
+
+    for (const thing of results) {
+      if (thing instanceof GroupCategory) {
+        if (groupCategory) {
+          Object.assign(groupCategory, {groups: groupRefs});
+        }
+
+        groupCategory = thing;
+        groupRefs = [];
+      } else {
+        groupRefs.push(Thing.getReference(thing));
+      }
+    }
+
+    if (groupCategory) {
+      Object.assign(groupCategory, {groups: groupRefs});
+    }
+  },
+
+  // Groups aren't sorted at all, always preserving the order in the data
+  // file as-is.
+  sort: null,
+});