implement text repo for json files

app/Text/JsonTextRepository.php

@@ -0,0 +1,108 @@
+<?php
+
+namespace App\Text;
+
+use App\Text\Text;
+use App\Text\CreateTextDto;
+use App\Text\TextRepository;
+
+class JsonTextRepository implements TextRepository
+{
+    private string $filePath;
+
+    public function __construct()
+    {
+        $this->filePath = __DIR__.'/../../data/texts.json';
+    }
+
+    public function create(CreateTextDto $dto): Text
+    {
+        $texts = $this->readTexts();
+        $id = $this->getNextId($texts);
+
+        $text = new Text(id: $id, name: $dto->name);
+        $texts[] = ['id' => $id, 'name' => $dto->name];
+
+        $this->writeTexts($texts);
+
+        return $text;
+    }
+
+    public function find(int $id): ?Text
+    {
+        $texts = $this->readTexts();
+
+        foreach ($texts as $data) {
+            if ($data['id'] === $id) {
+                return new Text(
+                    id: $data['id'],
+                    name: $data['name'],
+                );
+            }
+        }
+
+        return null;
+    }
+
+    /**
+     * @return Text[]
+     */
+    public function getAll(): array
+    {
+        $texts = $this->readTexts();
+
+        return array_map(
+            function (array $data) {
+                return new Text(
+                    id: $data['id'],
+                    name: $data['name'],
+                );
+            },
+            $texts
+        );
+    }
+
+    /**
+     * @return array
+     */
+    private function readTexts(): array
+    {
+        if (!file_exists($this->filePath)) {
+            return [];
+        }
+
+        $content = file_get_contents($this->filePath);
+
+        return json_decode($content, true) ?? [];
+    }
+
+    /**
+     * @param array $texts
+     */
+    private function writeTexts(array $texts): void
+    {
+        file_put_contents(
+            $this->filePath,
+            json_encode($texts, JSON_PRETTY_PRINT)
+        );
+    }
+
+    /**
+     * @param array $texts
+     */
+    private function getNextId(array $texts): int
+    {
+        if (empty($texts)) {
+            return 1;
+        }
+
+        $maxId = 0;
+        foreach ($texts as $text) {
+            if ($text['id'] > $maxId) {
+                $maxId = $text['id'];
+            }
+        }
+
+        return $maxId + 1;
+    }
+}