Add Paginator

src/Api.php

@@ -13,6 +13,7 @@ use Zoomyboy\LaravelNami\Data\Course;
 use Zoomyboy\LaravelNami\Data\Membership;
 use Zoomyboy\LaravelNami\Data\MembershipEntry;
 use Zoomyboy\LaravelNami\Exceptions\NotAuthenticatedException;
+use Zoomyboy\LaravelNami\Support\Paginator;
 
 class Api
 {
@@ -55,24 +56,20 @@ class Api
     {
         $this->assertLoggedIn();
 
-        return LazyCollection::make(function () use ($payload) {
-            $page = 1;
-            while (!isset($totalEntries) || ($page - 1) * 100 + 1 <= $totalEntries) {
-                $start = ($page - 1) * 100;
-                $url = $this->url.'/ica/rest/nami/search-multi/result-list?searchedValues='.rawurlencode(json_encode((object) $payload) ?: '{}').'&page='.$page.'&start='.$start.'&limit=100';
-                $response = $this->http()->get($url);
+        return app(Paginator::class)->startResult(100,
+            fn ($page, $start) => $this->http()->get($this->url.'/ica/rest/nami/search-multi/result-list?searchedValues='.rawurlencode(json_encode((object) $payload) ?: '{}').'&page='.$page.'&start='.$start.'&limit=100'),
+            function ($response) {
                 if (true !== $response->json()['success']) {
-                    $this->exception('Search failed', $url, $response->json(), ['page' => $page, 'start' => $start]);
+                    $this->exception('Search failed', '', $response->json(), []);
                 }
-                $totalEntries = $response->json()['totalEntries'];
                 foreach ($response->json()['data'] as $member) {
                     yield Member::fromNami(collect($member)->mapWithKeys(function ($value, $key) {
                         return [str_replace('entries_', '', (string) $key) => $value];
                     }));
                 }
-                ++$page;
-            }
-        });
+            },
+            fn ($response) => $response->json()['totalEntries'],
+        );
     }
 
     public function deleteMember(int $id): void

src/Support/Paginator.php

@@ -0,0 +1,51 @@
+<?php
+
+namespace Zoomyboy\LaravelNami\Support;
+
+use Generator;
+use Illuminate\Http\Client\Response;
+use Illuminate\Support\LazyCollection;
+
+class Paginator
+{
+    /**
+     * @param callable(int): Response       $responseFactory
+     * @param callable(Response): Generator $generator
+     * @param callable(Response): int       $totalFetcher
+     */
+    public function result(callable $responseFactory, callable $generator, callable $totalFetcher): LazyCollection
+    {
+        return $this->startResult(
+            0,
+            fn ($page, $start) => $responseFactory($page),
+            $generator,
+            $totalFetcher
+        );
+    }
+
+    /**
+     * @param callable(int, int): Response  $responseFactory
+     * @param callable(Response): Generator $generator
+     * @param callable(Response): int       $totalFetcher
+     */
+    public function startResult(int $perPage, callable $responseFactory, callable $generator, callable $totalFetcher): LazyCollection
+    {
+        return LazyCollection::make(function () use ($perPage, $responseFactory, $generator, $totalFetcher) {
+            $page = 1;
+            $start = 0;
+            $fetchedEntries = 0;
+            while (!isset($totalEntries) || $fetchedEntries < $totalEntries) {
+                $response = $responseFactory($page, $start);
+
+                foreach ($generator($response) as $entry) {
+                    ++$fetchedEntries;
+                    yield $entry;
+                }
+
+                $totalEntries = $totalFetcher($response);
+                ++$page;
+                $start += $perPage;
+            }
+        });
+    }
+}