All files / src/domains/inventory/warehouses/services warehouse.service.ts

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import { Injectable, NotFoundException, BadRequestException } from '@nestjs/common';
import { InjectModel } from '@nestjs/mongoose';
import { Model } from 'mongoose';
import { Warehouse, StorageLocation } from '../schemas/warehouse.schema';
 
@Injectable()
export class WarehouseService {
  constructor(
    @InjectModel(Warehouse.name)
    private readonly warehouseModel: Model<Warehouse>,
    @InjectModel(StorageLocation.name)
    private readonly locationModel: Model<StorageLocation>
  ) {}
 
  async createWarehouse(tenantId: string, data: any): Promise<Warehouse> {
    const existing = await this.warehouseModel.findOne({ tenantId, warehouseCode: data.warehouseCode }).exec();
    if (existing) {
      throw new BadRequestException(`Warehouse with code ${data.warehouseCode} already exists`);
    }
 
    // Circular Hierarchy check
    if (data.parentWarehouseId) {
      let currentParentId = data.parentWarehouseId;
      while (currentParentId) {
        const parent = await this.warehouseModel.findOne({ tenantId, _id: currentParentId }).exec();
        if (!parent) break;
        if (parent.warehouseCode === data.warehouseCode) {
          throw new BadRequestException('Circular hierarchy detected in warehouse relationship');
        }
        currentParentId = parent.parentWarehouseId;
      }
    }
 
    return this.warehouseModel.create({
      ...data,
      tenantId,
      active: true,
    });
  }
 
  async getWarehouses(tenantId: string): Promise<Warehouse[]> {
    return this.warehouseModel.find({ tenantId }).exec();
  }
 
  async getWarehouseById(tenantId: string, id: string): Promise<Warehouse> {
    const wh = await this.warehouseModel.findOne({ tenantId, _id: id }).exec();
    if (!wh) throw new NotFoundException('Warehouse not found');
    return wh;
  }
 
  async createLocation(tenantId: string, data: any): Promise<StorageLocation> {
    const wh = await this.getWarehouseById(tenantId, data.warehouseId);
    if (!wh.active) {
      throw new BadRequestException(`Cannot create locations on inactive warehouse ${wh.warehouseCode}`);
    }
 
    return this.locationModel.create({
      ...data,
      tenantId,
      active: true,
    });
  }
 
  async getLocations(tenantId: string, warehouseId: string): Promise<StorageLocation[]> {
    return this.locationModel.find({ tenantId, warehouseId }).exec();
  }
}