update code

app/Http/Controllers/Api/ReportsController.php

@@ -0,0 +1,86 @@
+<?php
+
+namespace App\Http\Controllers\Api;
+
+use App\Http\Controllers\Controller;
+use App\Contracts\Repositories\DocumentRepository;
+use App\Contracts\Repositories\BookRepository;
+use App\Http\Requests\Document\{
+    ExportRequest,
+};
+
+/**
+ * Class ReportsController.
+ *
+ * @package namespace App\Http\Controllers\Api;
+ */
+class ReportsController extends Controller
+{
+    /**
+     * @var DocumentRepository
+     */
+    protected $repository;
+
+    /**
+     * @var BookRepository
+     */
+    protected $bookRepository;
+
+    /**
+     * ReportsController constructor.
+     *
+     * @param DocumentRepository $repository
+     */
+    public function __construct(DocumentRepository $repository, BookRepository $bookRepository)
+    {
+        $this->repository = $repository;
+        $this->bookRepository = $bookRepository;
+    }
+
+    /**
+     * Download report
+     *
+     * @return \Illuminate\Http\Response
+     */
+    public function export(ExportRequest $request)
+    {
+        $books = $this->bookRepository->all();
+
+        if($request->filled('book')){
+            $books = collect();
+            $books->push($this->bookRepository->find($request->book));
+        }
+        
+        $books->map(function ($book) use ($request)
+        {
+            $documents = $this->repository->scopeQuery(function($query) use ($request, $book)
+            {
+                $query->where('book_id', $book->id);
+        
+                if($request->filled('type')){
+                    $query->where('type_id', $request->type);
+                }
+
+                if($request->filled('from')){
+                    $request->to = $request->to ?: date('Y-m-d');
+                    $query->whereBetween('effective_at', [$request->from, $request->to]);
+                }
+
+                $query
+                ->with(['receivers', 'publisher', 'organizes'])
+                ->orderBy('effective_at')
+                ->orderBy('publisher_id');
+
+                return $query;
+            })->all();
+
+            return $book->documents = $documents;
+        });
+
+        $name = auth()->user()->name . ' ' . date('d-m-Y');
+        $fileName = $name . '.' . strtolower($request->export);
+        $exporter = new \App\Exports\BooksExport($books, $request->from, $request->to);
+        return \Excel::download($exporter, $fileName, $request->export);
+    }
+
+}