feat(db): add database repositories

src/database/brand.database.repository.ts

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+import { Injectable } from '@nestjs/common';
+import { PrismaService } from '../../prisma/prisma.service';
+import { Brand } from '../../prisma/generated/client';
+import { BrandCreateInput } from '../../prisma/generated/models/Brand';
+
+/** Database access to brands. Rows are matched with Hiboutik by `hiboutikId`. */
+@Injectable()
+export class BrandDatabaseRepository {
+  constructor(private readonly prisma: PrismaService) {}
+
+  async getAll(): Promise<Brand[]> {
+    return this.prisma.brand.findMany({
+      orderBy: { hiboutikId: 'asc' },
+    });
+  }
+
+  /** Creates or updates the brand with the same `hiboutikId`. */
+  async upsert(brand: BrandCreateInput): Promise<Brand> {
+    return this.prisma.brand.upsert({
+      where: { hiboutikId: brand.hiboutikId },
+      create: brand,
+      update: brand,
+    });
+  }
+
+  /**
+   * Deletes the brands that no longer exist in Hiboutik.
+   * Their products are kept: the relation is set to null (onDelete: SetNull).
+   */
+  async deleteMissing(keptHiboutikIds: number[]): Promise<number> {
+    const result = await this.prisma.brand.deleteMany({
+      where: { hiboutikId: { notIn: keptHiboutikIds } },
+    });
+    return result.count;
+  }
+}

src/database/category.database.repository.ts

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+import { Injectable } from '@nestjs/common';
+import { PrismaService } from '../../prisma/prisma.service';
+import { Category } from '../../prisma/generated/client';
+import { CategoryCreateInput } from '../../prisma/generated/models/Category';
+
+/** Database access to categories. Rows are matched with Hiboutik by `hiboutikId`. */
+@Injectable()
+export class CategoryDatabaseRepository {
+  constructor(private readonly prisma: PrismaService) {}
+
+  async getAll(): Promise<Category[]> {
+    return this.prisma.category.findMany({
+      orderBy: { hiboutikId: 'asc' },
+    });
+  }
+
+  /** Creates or updates the category with the same `hiboutikId`. */
+  async upsert(category: CategoryCreateInput): Promise<Category> {
+    return this.prisma.category.upsert({
+      where: { hiboutikId: category.hiboutikId },
+      create: category,
+      update: category,
+    });
+  }
+
+  /** Links a category to its parent (null for a root category). Both must already exist. */
+  async setParent(hiboutikId: number, parentHiboutikId: number | null): Promise<Category> {
+    return this.prisma.category.update({
+      where: { hiboutikId },
+      data: { parent: parentHiboutikId ? { connect: { hiboutikId: parentHiboutikId } } : { disconnect: true } },
+    });
+  }
+
+  /**
+   * Deletes the categories that no longer exist in Hiboutik.
+   * Their products and sub-categories are kept: the relation is set to null (onDelete: SetNull).
+   */
+  async deleteMissing(keptHiboutikIds: number[]): Promise<number> {
+    const result = await this.prisma.category.deleteMany({
+      where: { hiboutikId: { notIn: keptHiboutikIds } },
+    });
+    return result.count;
+  }
+}

src/database/customer.database.repository.ts

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+import { Injectable } from '@nestjs/common';
+import { PrismaService } from '../../prisma/prisma.service';
+import { Customer } from '../../prisma/generated/client';
+import { CustomerCreateInput } from '../../prisma/generated/models/Customer';
+
+/** Database access to customers. Rows are matched with Hiboutik by `hiboutikId`. */
+@Injectable()
+export class CustomerDatabaseRepository {
+  constructor(private readonly prisma: PrismaService) {}
+
+  async getAll(): Promise<Customer[]> {
+    return this.prisma.customer.findMany({
+      orderBy: { hiboutikId: 'asc' },
+    });
+  }
+
+  /** Creates or updates the customer with the same `hiboutikId`. */
+  async upsert(customer: CustomerCreateInput): Promise<Customer> {
+    return this.prisma.customer.upsert({
+      where: { hiboutikId: customer.hiboutikId },
+      create: customer,
+      update: customer,
+    });
+  }
+
+  /**
+   * Deletes the customers that no longer exist in Hiboutik.
+   * Their addresses are deleted (onDelete: Cascade), their orders are kept with no customer (onDelete: SetNull).
+   */
+  async deleteMissing(keptHiboutikIds: number[]): Promise<number> {
+    const result = await this.prisma.customer.deleteMany({
+      where: { hiboutikId: { notIn: keptHiboutikIds } },
+    });
+    return result.count;
+  }
+}

src/database/product.database.repository.ts

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+import { Injectable } from '@nestjs/common';
+import { PrismaService } from '../../prisma/prisma.service';
+import { Product } from '../../prisma/generated/client';
+import { ProductCreateInput } from '../../prisma/generated/models/Product';
+
+/** Database access to products. Rows are matched with Hiboutik by `hiboutikId`. */
+@Injectable()
+export class ProductDatabaseRepository {
+  constructor(private readonly prisma: PrismaService) {}
+
+  async getAll(): Promise<Product[]> {
+    return this.prisma.product.findMany({
+      orderBy: { hiboutikId: 'asc' },
+    });
+  }
+
+  /** Creates or updates the product with the same `hiboutikId`. On update, the relations missing from the input are unlinked. */
+  async upsert(product: ProductCreateInput): Promise<Product> {
+    return this.prisma.product.upsert({
+      where: { hiboutikId: product.hiboutikId },
+      create: product,
+      update: {
+        ...product,
+        // an undefined relation is ignored by Prisma on update: explicitly unlink relations removed in Hiboutik
+        brand: product.brand ?? { disconnect: true },
+        category: product.category ?? { disconnect: true },
+        supplier: product.supplier ?? { disconnect: true },
+      },
+    });
+  }
+
+  /**
+   * Deletes products (and their versions, by cascade).
+   * Order lines keep their own snapshot of the product, their link is set to null.
+   */
+  async deleteAll(productIds: string[]): Promise<number> {
+    if (productIds.length === 0) return 0;
+
+    const result = await this.prisma.product.deleteMany({
+      where: { id: { in: productIds } },
+    });
+    return result.count;
+  }
+}

src/database/productVersion.database.repository.ts

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+import { Injectable } from '@nestjs/common';
+import { PrismaService } from '../../prisma/prisma.service';
+import { ProductVersion } from '../../prisma/generated/client';
+import { ProductVersionCreateInput } from '../../prisma/generated/models/ProductVersion';
+
+/** Database access to product versions (one per Hiboutik size), identified by their product and `hiboutikSizeId`. */
+@Injectable()
+export class ProductVersionDatabaseRepository {
+  constructor(private readonly prisma: PrismaService) {}
+
+  async getAll(): Promise<ProductVersion[]> {
+    return this.prisma.productVersion.findMany({
+      orderBy: { hiboutikSizeId: 'asc' },
+    });
+  }
+
+  /** Creates or updates the version of `productId` with the same `hiboutikSizeId`. */
+  async upsert(productId: string, productVersion: ProductVersionCreateInput): Promise<ProductVersion> {
+    return this.prisma.productVersion.upsert({
+      where: { productId_hiboutikSizeId: { productId: productId, hiboutikSizeId: productVersion.hiboutikSizeId } },
+      create: productVersion,
+      update: productVersion,
+    });
+  }
+
+  /**
+   * Deletes the versions of a product that no longer exist in Hiboutik.
+   * Order lines keep their own snapshot of the product, their link is set to null.
+   */
+  async deleteMissing(productId: string, keptHiboutikSizeIds: number[]): Promise<number> {
+    const result = await this.prisma.productVersion.deleteMany({
+      where: { productId, hiboutikSizeId: { notIn: keptHiboutikSizeIds } },
+    });
+    return result.count;
+  }
+}

src/database/supplier.database.repository.ts

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+import { Injectable } from '@nestjs/common';
+import { PrismaService } from '../../prisma/prisma.service';
+import { Supplier } from '../../prisma/generated/client';
+import { SupplierCreateInput } from '../../prisma/generated/models/Supplier';
+
+/** Database access to suppliers. Rows are matched with Hiboutik by `hiboutikId`. */
+@Injectable()
+export class SupplierDatabaseRepository {
+  constructor(private readonly prisma: PrismaService) {}
+
+  async getAll(): Promise<Supplier[]> {
+    return this.prisma.supplier.findMany({
+      orderBy: { hiboutikId: 'asc' },
+    });
+  }
+
+  /** Creates or updates the supplier with the same `hiboutikId`. */
+  async upsert(supplier: SupplierCreateInput): Promise<Supplier> {
+    return this.prisma.supplier.upsert({
+      where: { hiboutikId: supplier.hiboutikId },
+      create: supplier,
+      update: supplier,
+    });
+  }
+
+  /**
+   * Deletes the suppliers that no longer exist in Hiboutik.
+   * Their products are kept: the relation is set to null (onDelete: SetNull).
+   */
+  async deleteMissing(keptHiboutikIds: number[]): Promise<number> {
+    const result = await this.prisma.supplier.deleteMany({
+      where: { hiboutikId: { notIn: keptHiboutikIds } },
+    });
+    return result.count;
+  }
+}