feat(data): add variant repository

src/Repositories/VariantRepository.php

@@ -0,0 +1,140 @@
+<?php
+
+namespace Bazaar\Repositories;
+
+use Bazaar\Core\Database;
+
+final class VariantRepository
+{
+    public function __construct(private readonly Database $db)
+    {
+    }
+
+    public function find(int $id): ?array
+    {
+        return $this->db->selectOne('SELECT * FROM productVariants WHERE id = ?', [$id]);
+    }
+
+    public function findActive(int $id): ?array
+    {
+        return $this->db->selectOne(
+            'SELECT * FROM productVariants WHERE id = ? AND isActive = 1',
+            [$id]
+        );
+    }
+
+    public function forProduct(int $productId): array
+    {
+        $variants = $this->db->select(
+            'SELECT * FROM productVariants WHERE productId = ? ORDER BY id ASC',
+            [$productId]
+        );
+        foreach ($variants as &$variant) {
+            $variant['options'] = $this->options((int) $variant['id']);
+            $variant['label'] = $this->label($variant['options']);
+        }
+        return $variants;
+    }
+
+    public function activeForProduct(int $productId): array
+    {
+        return array_values(array_filter(
+            $this->forProduct($productId),
+            static fn (array $variant): bool => (int) $variant['isActive'] === 1
+        ));
+    }
+
+    public function options(int $variantId): array
+    {
+        return $this->db->select(
+            'SELECT vo.attributeId, vo.attributeValueId,
+                    a.name AS attributeName, a.slug AS attributeSlug,
+                    av.value AS valueName, av.slug AS valueSlug
+             FROM variantOptions vo
+             JOIN attributes a ON a.id = vo.attributeId
+             JOIN attributeValues av ON av.id = vo.attributeValueId
+             WHERE vo.variantId = ?
+             ORDER BY a.name ASC',
+            [$variantId]
+        );
+    }
+
+    public function label(array $options): string
+    {
+        $parts = array_map(
+            static fn (array $option): string => $option['valueName'],
+            $options
+        );
+        return implode(' / ', $parts);
+    }
+
+    public function create(int $productId, string $sku, int $priceCents, int $stockQuantity, bool $isActive = true): int
+    {
+        return $this->db->insert(
+            'INSERT INTO productVariants (productId, sku, priceCents, stockQuantity, isActive, createdAt)
+             VALUES (?, ?, ?, ?, ?, ?)',
+            [$productId, $sku, $priceCents, $stockQuantity, $isActive ? 1 : 0, gmdate('c')]
+        );
+    }
+
+    public function setOption(int $variantId, int $attributeId, int $attributeValueId): void
+    {
+        $this->db->statement(
+            'INSERT INTO variantOptions (variantId, attributeId, attributeValueId)
+             VALUES (?, ?, ?)
+             ON CONFLICT(variantId, attributeId)
+             DO UPDATE SET attributeValueId = excluded.attributeValueId',
+            [$variantId, $attributeId, $attributeValueId]
+        );
+    }
+
+    public function updateStock(int $id, int $stockQuantity): void
+    {
+        $this->db->statement(
+            'UPDATE productVariants SET stockQuantity = ? WHERE id = ?',
+            [$stockQuantity, $id]
+        );
+    }
+
+    public function decrementStock(int $id, int $quantity): void
+    {
+        $this->db->statement(
+            'UPDATE productVariants SET stockQuantity = stockQuantity - ? WHERE id = ?',
+            [$quantity, $id]
+        );
+    }
+
+    public function delete(int $id): void
+    {
+        $this->db->statement('DELETE FROM productVariants WHERE id = ?', [$id]);
+    }
+
+    public function priceRangeCents(int $productId): array
+    {
+        $row = $this->db->selectOne(
+            'SELECT MIN(priceCents) AS minCents, MAX(priceCents) AS maxCents
+             FROM productVariants WHERE productId = ? AND isActive = 1',
+            [$productId]
+        );
+        return [
+            'minCents' => $row['minCents'] !== null ? (int) $row['minCents'] : null,
+            'maxCents' => $row['maxCents'] !== null ? (int) $row['maxCents'] : null,
+        ];
+    }
+
+    public function stockForProduct(int $productId): int
+    {
+        return (int) $this->db->scalar(
+            'SELECT COALESCE(SUM(stockQuantity), 0) FROM productVariants WHERE productId = ? AND isActive = 1',
+            [$productId]
+        );
+    }
+
+    public function countForProduct(int $productId): int
+    {
+        return (int) $this->db->scalar(
+            'SELECT COUNT(*) FROM productVariants WHERE productId = ?',
+            [$productId]
+        );
+    }
+}