Examples/GerstITS.Examples.Logic/Customers/Search/CustomerSearchQueryBuilderRule.cs

using GerstITS.Common;
using GerstITS.Data;
using GerstITS.Examples.Data.Entities;
using GerstITS.Search;

namespace GerstITS.Examples.Logic.Customers.Search;

internal sealed class CustomerSearchQueryBuilderRule : SearchQueryBuilderRuleBase<Customer, CustomerSearchFilter>
{
    #region Fields

    private readonly IReadOnlyRepository _repository;

    #endregion

    #region Constructors

    public CustomerSearchQueryBuilderRule(IReadOnlyRepository repository)
    {
        _repository = repository;
    }

    #endregion

    #region Methods

    protected override IQueryable<Customer> CreateQuery(CustomerSearchFilter filter)
    {
        var query = _repository.Query<CustomerEntity>();

        if (filter.Name.IsNotNullOrWhiteSpace())
            query = query.Where(i => i.FirstName.Contains(filter.Name)
                                  || i.LastName.Contains(filter.Name));

        if (filter.EMail.IsNotNullOrWhiteSpace())
            query = query.Where(i => i.EMail == filter.EMail);

        return query.Project(x => new Customer
                                  {
                                      Id = x.Id,
                                      FirstName = x.FirstName,
                                      LastName = x.LastName,
                                      EMail = x.EMail,
                                      IsActive = x.IsActive
                                  });
    }

    #endregion
}