feat(database): add set data type

src/Tempest/Database/src/Exceptions/InvalidValue.php

@@ -0,0 +1,15 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tempest\Database\Exceptions;
+
+use Exception;
+
+final class InvalidValue extends Exception
+{
+    public function __construct(string $field, string $value)
+    {
+        parent::__construct("Value '{$value}' provided for {$field} is not valid");
+    }
+}

src/Tempest/Database/src/QueryStatements/CreateTableStatement.php

@@ -180,6 +180,22 @@ public function json(
         return $this;
     }
 
+    public function set(
+        string $name,
+        array $values,
+        bool $nullable = false,
+        ?string $default = null
+    ): self {
+        $this->statements[] = new SetStatement(
+            name: $name,
+            values: $values,
+            nullable: $nullable,
+            default: $default,
+        );
+
+        return $this;
+    }
+
     public function compile(DatabaseDialect $dialect): string
     {
         $compiled = sprintf(

src/Tempest/Database/src/QueryStatements/SetStatement.php

@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tempest\Database\QueryStatements;
+
+use Tempest\Database\DatabaseDialect;
+use Tempest\Database\Exceptions\InvalidValue;
+use Tempest\Database\QueryStatement;
+use Tempest\Database\UnsupportedDialect;
+
+final readonly class SetStatement implements QueryStatement
+{
+    public function __construct(
+        private string $name,
+        private array $values,
+        private bool $nullable = false,
+        private ?string $default = null,
+    ) {
+    }
+
+    public function compile(DatabaseDialect $dialect): string
+    {
+        if (empty($this->values)) {
+            throw new InvalidValue($this->name, json_encode($this->values));
+        }
+
+        return match($dialect) {
+            DatabaseDialect::MYSQL => sprintf(
+                '`%s` SET (%s) %s %s',
+                $this->name,
+                "'" . implode("', '", $this->values) . "'",
+                $this->default ? "DEFAULT '$this->default'" : '',
+                $this->nullable ? '' : 'NOT NULL',
+            ),
+            default => throw new UnsupportedDialect()
+        };
+    }
+}

tests/Integration/Database/QueryStatements/CreateTableStatementTest.php

@@ -4,11 +4,14 @@
 
 namespace Tests\Tempest\Integration\Database\QueryStatements;
 
+use Tempest\Database\DatabaseDialect;
 use Tempest\Database\Exceptions\InvalidDefaultValue;
+use Tempest\Database\Exceptions\InvalidValue;
 use Tempest\Database\Migration;
 use Tempest\Database\Migrations\CreateMigrationsTable;
 use Tempest\Database\QueryStatement;
 use Tempest\Database\QueryStatements\CreateTableStatement;
+use Tempest\Database\UnsupportedDialect;
 use Tests\Tempest\Integration\FrameworkIntegrationTestCase;
 
 /**
@@ -53,6 +56,40 @@ public function down(): QueryStatement|null
         $this->assertTrue(true);
     }
 
+    public function test_set_statement(): void
+    {
+        $migration = new class () implements Migration {
+            public function getName(): string
+            {
+                return '0';
+            }
+
+            public function up(): QueryStatement|null
+            {
+                return (new CreateTableStatement('table'))
+                    ->set('set', values: ['foo', 'bar'], default: 'foo');
+            }
+
+            public function down(): QueryStatement|null
+            {
+                return null;
+            }
+        };
+
+        match($this->container->get(DatabaseDialect::class)) {
+            DatabaseDialect::MYSQL => '',
+            DatabaseDialect::SQLITE => $this->expectException(UnsupportedDialect::class),
+            DatabaseDialect::POSTGRESQL => $this->expectException(UnsupportedDialect::class),
+        };
+
+        $this->migrate(
+            CreateMigrationsTable::class,
+            $migration
+        );
+
+        $this->assertTrue(true);
+    }
+
     public function test_invalid_json_default(): void
     {
         $migration = new class () implements Migration {
@@ -81,4 +118,33 @@ public function down(): QueryStatement|null
             $migration
         );
     }
+
+    public function test_invalid_set_values(): void
+    {
+        $migration = new class () implements Migration {
+            public function getName(): string
+            {
+                return '0';
+            }
+
+            public function up(): QueryStatement|null
+            {
+                return (new CreateTableStatement('table'))
+                    ->set('set', values: []);
+            }
+
+            public function down(): QueryStatement|null
+            {
+                return null;
+            }
+        };
+
+        $this->expectException(InvalidValue::class);
+        $this->expectExceptionMessage("Value '[]' provided for set is not valid");
+
+        $this->migrate(
+            CreateMigrationsTable::class,
+            $migration
+        );
+    }
 }