From 33d461a22a7ab4ebb4f18fa3616cbdbe7dae5174 Mon Sep 17 00:00:00 2001
From: Hemachandar <hmac.devo@gmail.com>
Date: Thu, 18 Dec 2025 20:51:04 +0530
Subject: [PATCH] Support JSON string body in fetch

---
 src/Client.php       |  6 +++---
 tests/ClientTest.php | 23 +++++++++++++++++++++--
 2 files changed, 24 insertions(+), 5 deletions(-)

diff --git a/src/Client.php b/src/Client.php
index 4b6772b..8ca3803 100644
--- a/src/Client.php
+++ b/src/Client.php
@@ -255,7 +255,7 @@ private function withRetries(callable $callback): mixed
      *
      * @param string $url
      * @param string $method
-     * @param array<string>|array<string, mixed> $body
+     * @param array<string>|array<string, mixed>|string|null $body
      * @param array<string, mixed> $query
      * @param ?callable $chunks Optional callback function that receives a Chunk object
      * @param ?int $timeoutMs Optional request timeout in milliseconds
@@ -265,7 +265,7 @@ private function withRetries(callable $callback): mixed
     public function fetch(
         string $url,
         string $method = self::METHOD_GET,
-        ?array $body = [],
+        array|string|null $body = [],
         ?array $query = [],
         ?callable $chunks = null,
         ?int $timeoutMs = null,
@@ -275,7 +275,7 @@ public function fetch(
             throw new Exception("Unsupported HTTP method");
         }
 
-        if (isset($this->headers['content-type']) && $body !== null) {
+        if (is_array($body) && isset($this->headers['content-type'])) {
             $body = match ($this->headers['content-type']) {
                 self::CONTENT_TYPE_APPLICATION_JSON => $this->jsonEncode($body),
                 self::CONTENT_TYPE_APPLICATION_FORM_URLENCODED, self::CONTENT_TYPE_MULTIPART_FORM_DATA => self::flatten($body),
diff --git a/tests/ClientTest.php b/tests/ClientTest.php
index e861285..bc9d78b 100644
--- a/tests/ClientTest.php
+++ b/tests/ClientTest.php
@@ -13,7 +13,7 @@ final class ClientTest extends TestCase
      * @dataProvider dataSet
      * @param string $url
      * @param string $method
-     * @param array<string, mixed> $body
+     * @param array<string, mixed>|string|null $body
      * @param array<string, string> $headers
      * @param array<string, mixed> $query
      * @return void
@@ -53,7 +53,7 @@ public function testFetch(
                     if ($headers['content-type'] != "application/x-www-form-urlencoded") {
                         $this->assertSame( // Assert that the body is equal to the response's body
                             $respData['body'],
-                            json_encode($body) // Converting the body to JSON string
+                            is_string($body) ? $body : json_encode($body) // Converting the body to JSON string
                         );
                     }
                 }
@@ -307,6 +307,25 @@ public function dataSet(): array
                     'content-type' => 'application/json'
                 ],
             ],
+            'postSingleLineJsonStringBody' => [
+                'localhost:8000',
+                Client::METHOD_POST,
+                '{"name": "John Doe","age": 30}',
+                [
+                    'content-type' => 'application/json'
+                ]
+            ],
+            'postMultiLineJsonStringBody' => [
+                'localhost:8000',
+                Client::METHOD_POST,
+                '{
+                    "name": "John Doe",
+                    "age": 30
+                }',
+                [
+                    'content-type' => 'application/json'
+                ]
+            ],
             'postFormDataBody' => [
                 'localhost:8000',
                 Client::METHOD_POST,