Support external images in cards cover

packages/gitbook/src/components/DocumentView/Table/RecordCard.tsx

@@ -22,7 +22,7 @@ export async function RecordCard(
     const { view, record, context, block, isOffscreen } = props;
 
     const coverFile = view.coverDefinition
-        ? getRecordValue<string[]>(record[1], view.coverDefinition)?.[0]
+        ? getRecordValue<ContentRef[] | string[]>(record[1], view.coverDefinition)?.[0]
         : null;
     const targetRef = view.targetDefinition
         ? (record[1].values[view.targetDefinition] as ContentRef)
@@ -30,7 +30,7 @@ export async function RecordCard(
 
     const [cover, target] = await Promise.all([
         coverFile && context.contentContext
-            ? resolveContentRef({ kind: 'file', file: coverFile }, context.contentContext)
+            ? resolveContentRef(getCoverFileContentRef(coverFile), context.contentContext)
             : null,
         targetRef && context.contentContext
             ? resolveContentRef(targetRef, context.contentContext)
@@ -167,3 +167,16 @@ export async function RecordCard(
 
     return <div className={tcls(RecordCardStyles)}>{body}</div>;
 }
+
+/**
+ * Resolve the cover file content-ref.
+ * If the value is a string, it means it's a file ID (legacy).
+ * Otherwise, it's a content-ref (File|URL).
+ */
+function getCoverFileContentRef(value: ContentRef | string): ContentRef {
+    if (typeof value === 'string') {
+        return { kind: 'file', file: value };
+    }
+
+    return value;
+}

packages/gitbook/src/components/DocumentView/Table/utils.ts

@@ -4,10 +4,9 @@ import assertNever from 'assert-never';
 /**
  * Get the value for a column in a record.
  */
-export function getRecordValue<T extends number | string | boolean | string[] | ContentRef>(
-    record: DocumentTableRecord,
-    definitionId: string
-): T {
+export function getRecordValue<
+    T extends number | string | boolean | string[] | ContentRef | ContentRef[],
+>(record: DocumentTableRecord, definitionId: string): T {
     // @ts-ignore
     return record.values[definitionId];
 }