1 files changed, 87 insertions, 0 deletions
diff --git a/src/data/files/homepage-layout.js b/src/data/files/homepage-layout.js
new file mode 100644
index 00000000..646beff6
--- /dev/null
+++ b/src/data/files/homepage-layout.js
@@ -0,0 +1,87 @@
+import {empty} from '#sugar';
+
+export default ({
+  documentModes: {allInOne},
+  thingConstructors: {
+    HomepageLayout,
+    HomepageLayoutActionsRow,
+    HomepageLayoutAlbumCarouselRow,
+    HomepageLayoutAlbumGridRow,
+    HomepageLayoutRow,
+    HomepageLayoutSection,
+  },
+}) => ({
+  title: `Process homepage layout file`,
+  file: 'homepage.yaml',
+
+  documentMode: allInOne,
+  documentThing: document => {
+    if (document['Homepage']) {
+      return HomepageLayout;
+    }
+
+    if (document['Section']) {
+      return HomepageLayoutSection;
+    }
+
+    if (document['Row']) {
+      switch (document['Row']) {
+        case 'actions':
+          return HomepageLayoutActionsRow;
+        case 'album carousel':
+          return HomepageLayoutAlbumCarouselRow;
+        case 'album grid':
+          return HomepageLayoutAlbumGridRow;
+        default:
+          throw new TypeError(`Unrecognized row type ${document['Row']}`);
+      }
+    }
+
+    return null;
+  },
+
+  connect(results) {
+    if (!empty(results) && !(results[0] instanceof HomepageLayout)) {
+      throw new Error(`Expected 'Homepage' document at top of homepage layout file`);
+    }
+
+    const homepageLayout = results[0];
+    const sections = [];
+
+    let currentSection = null;
+    let currentSectionRows = [];
+
+    const closeCurrentSection = () => {
+      if (currentSection) {
+        for (const row of currentSectionRows) {
+          row.section = currentSection;
+        }
+
+        currentSection.rows = currentSectionRows;
+        sections.push(currentSection);
+
+        currentSection = null;
+        currentSectionRows = [];
+      }
+    };
+
+    for (const entry of results.slice(1)) {
+      if (entry instanceof HomepageLayout) {
+        throw new Error(`Expected only one 'Homepage' document in total`);
+      } else if (entry instanceof HomepageLayoutSection) {
+        closeCurrentSection();
+        currentSection = entry;
+      } else if (entry instanceof HomepageLayoutRow) {
+        if (currentSection) {
+          currentSectionRows.push(entry);
+        } else {
+          throw new Error(`Expected a 'Section' document to add following rows into`);
+        }
+      }
+    }
+
+    closeCurrentSection();
+
+    homepageLayout.sections = sections;
+  },
+});