Vendor

2021-06-01 19:55:55 +02:00
parent 052cbe3038
commit d8c489c714
328 changed files with 36645 additions and 0 deletions
@@ -0,0 +1,80 @@
+<?php
+
+namespace Nuwave\Lighthouse\Pagination;
+
+use Illuminate\Support\Collection;
+use GraphQL\Type\Definition\ResolveInfo;
+use Nuwave\Lighthouse\Support\Contracts\GraphQLContext;
+use Illuminate\Contracts\Pagination\LengthAwarePaginator;
+
+class ConnectionField
+{
+    /**
+     * Resolve page info for connection.
+     *
+     * @param  \Illuminate\Contracts\Pagination\LengthAwarePaginator  $paginator
+     * @return array
+     */
+    public function pageInfoResolver(LengthAwarePaginator $paginator): array
+    {
+        return [
+            'total' => $paginator->total(),
+            'count' => $paginator->count(),
+            'currentPage' => $paginator->currentPage(),
+            'lastPage' => $paginator->lastPage(),
+            'hasNextPage' => $paginator->hasMorePages(),
+            'hasPreviousPage' => $paginator->currentPage() > 1,
+            'startCursor' => $paginator->firstItem()
+                ? Cursor::encode($paginator->firstItem())
+                : null,
+            'endCursor' => $paginator->lastItem()
+                ? Cursor::encode($paginator->lastItem())
+                : null,
+        ];
+    }
+
+    /**
+     * Resolve edges for connection.
+     *
+     * @param  \Illuminate\Contracts\Pagination\LengthAwarePaginator  $paginator
+     * @param  array  $args
+     * @param  \Nuwave\Lighthouse\Support\Contracts\GraphQLContext  $context
+     * @param  GraphQL\Type\Definition\ResolveInfo  $resolveInfo
+     * @return \Illuminate\Support\Collection
+     */
+    public function edgeResolver(LengthAwarePaginator $paginator, $args, GraphQLContext $context, ResolveInfo $resolveInfo): Collection
+    {
+        $returnTypeFields = $resolveInfo
+            ->returnType
+            ->ofType
+            ->getFields();
+        $firstItem = $paginator->firstItem();
+
+        return $paginator
+            ->values()
+            ->map(function ($item, $index) use ($firstItem, $returnTypeFields): array {
+                $data = [];
+
+                foreach ($returnTypeFields as $field) {
+                    switch ($field->name) {
+                        case 'cursor':
+                            $data['cursor'] = Cursor::encode($firstItem + $index);
+                            break;
+
+                        case 'node':
+                            $data['node'] = $item;
+                            break;
+
+                        default:
+                            // All other fields on the return type are assumed to be part
+                            // of the edge, so we try to locate them in the pivot attribute
+                            if (isset($item->pivot->{$field->name})) {
+                                $data[$field->name] = $item->pivot->{$field->name};
+                            }
+                    }
+                }
+
+                return $data;
+            });
+    }
+}