updated

Author: ArnabChatterjee20k

src/Database/Database.php

@@ -2610,6 +2610,9 @@ protected function validateDefaultTypes(string $type, mixed $default): void
                 if ($defaultType !== 'integer' && $defaultType !== 'string') {
                     throw new DatabaseException('Default value ' . $default . ' does not match given type ' . $type);
                 }
+                if ($defaultType === 'string' && !BigIntValidator::isIntegerString($default)) {
+                    throw new DatabaseException('Default value ' . $default . ' is not a valid integer string for type bigint');
+                }
                 break;
             case self::VAR_DATETIME:
                 if ($defaultType !== self::VAR_STRING) {

src/Database/Validator/Attribute.php

@@ -540,6 +540,10 @@ protected function validateDefaultTypes(string $type, mixed $default): void
                     $this->message = 'Default value ' . $default . ' does not match given type ' . $type;
                     throw new DatabaseException($this->message);
                 }
+                if ($defaultType === 'string' && !BigInt::isIntegerString($default)) {
+                    $this->message = 'Default value ' . $default . ' is not a valid integer string for type bigint';
+                    throw new DatabaseException($this->message);
+                }
                 break;
             case Database::VAR_DATETIME:
                 if ($defaultType !== Database::VAR_STRING) {

tests/unit/Validator/AttributeTest.php

@@ -1040,6 +1040,56 @@ public function testValidIntegerWithDefaultValue(): void
         $this->assertTrue($validator->isValid($attribute));
     }
 
+    public function testInvalidBigIntDefaultValueTypeStringNotNumeric(): void
+    {
+        $validator = new Attribute(
+            attributes: [],
+            maxStringLength: 16777216,
+            maxVarcharLength: 65535,
+            maxIntLength: PHP_INT_MAX,
+        );
+
+        $attribute = new Document([
+            '$id' => ID::custom('counter'),
+            'key' => 'counter',
+            'type' => Database::VAR_BIGINT,
+            'size' => 0,
+            'required' => false,
+            'default' => 'not_a_bigint',
+            'signed' => true,
+            'array' => false,
+            'filters' => [],
+        ]);
+
+        $this->expectException(DatabaseException::class);
+        $this->expectExceptionMessage('Default value not_a_bigint is not a valid integer string for type bigint');
+        $validator->isValid($attribute);
+    }
+
+    public function testValidBigIntDefaultValueTypeStringNumeric(): void
+    {
+        $validator = new Attribute(
+            attributes: [],
+            maxStringLength: 16777216,
+            maxVarcharLength: 65535,
+            maxIntLength: PHP_INT_MAX,
+        );
+
+        $attribute = new Document([
+            '$id' => ID::custom('counter'),
+            'key' => 'counter',
+            'type' => Database::VAR_BIGINT,
+            'size' => 0,
+            'required' => false,
+            'default' => '123',
+            'signed' => true,
+            'array' => false,
+            'filters' => [],
+        ]);
+
+        $this->assertTrue($validator->isValid($attribute));
+    }
+
     public function testValidFloatWithDefaultValue(): void
     {
         $validator = new Attribute(