00 The unedited conversation with Chat GPT, concerning almost all of the aspects of this session:

(optional): read this to get a better understanding of the topic: https://chatgpt.com/share/67f18460-1c1c-8010-bc57-9f3b683ec87a

Branching

Create the feature/transportation-search branch based on develop

DTO

In order to develop transportation search flow, three DTOs need to be created in the application layer.

Create DTOs related to transportation search flow

📂 Suggested Folder: Application/DTOs/City`

public class CityDto
{
    public int Id { get; init; }
    public required string Title { get; init; }
}

📂 Suggested Folder: Application/DTOs/Transportation

public class TransportationSearchRequestDto
{
    public int? FromCityId { get; init; }
    public int? ToCityId { get; init; }
    public DateTime? StartDate { get; init; }
    public DateTime? EndDate { get; init; }
}

public class TransportationSearchResultDto
{
    public long Id { get; init; }
    public required string CompanyTitle { get; init; }   
    public required string FromLocationTitle { get; init; }
    public required string ToLocationTitle { get; init; }
    public required string FromCityTitle { get; init; }
    public required string ToCityTitle { get; init; }
    public DateTime StartDateTime { get; init; }
    public DateTime? EndDateTime { get; init; }
    public decimal Price { get; init; } 
}

Repository

There are a few things to be add to some repositories for transportation search flow.

Create DTOs related to transportation search flow

📂 Suggested Folder: Domain/Framework/Interfaces/Repositories/ TransportationRepositories

public interface ITransportationRepository : IRepository<Transportation, long>
{
    Task<IEnumerable<Transportation>> SearchTransportationsAsync(
        int? fromCityId,
        int? toCityId, 
        DateTime? startDate, 
        DateTime? endDate);
}

📂 Suggested Folder: Infrastructure/Services/Services/TransportationRepositories

public async Task<IEnumerable<Transportation>> SearchTransportationsAsync(
            int? fromCityId, int? toCityId,
            DateTime? startDate, DateTime? endDate)
{
    var query = DbContext.Transportations
                .Include(x => x.FromLocation).ThenInclude(x => x.City)
                .Include(x => x.ToLocation).ThenInclude(x => x.City)
                .Include(x => x.Company)
                .AsQueryable();
                
    query = query.Where
    (x => fromCityId == null || x.FromLocation.CityId == fromCityId.Value);
    
    query = query.Where
    (x => toCityId == null || x.ToLocation.CityId == toCityId.Value);
    
    query = query.Where
    (x => startDate == null || x.StartDateTime.Date == startDate.Value.Date);
    
    query = query.Where
    (x => endDate == null ||
    (x.EndDateTime.HasValue && x.EndDateTime.Value == endDate.Value.Date));
            
    return await query.ToListAsync();
}

Auto Mapper

Auto Mapper simplifies mapping between aggregates and DTOs in both directions.

Config AutoMapper

📂 Suggested Folder: Application/Mappers/Profiles

public class MappingProfile : Profile
{
    public MappingProfile()
    {
        CreateMap<Transportation, TransportationSearchResultDto>()
            .ForMember(dest => dest.CompanyTitle, 
            opt => opt.MapFrom(src => src.Company.Title))
            
            .ForMember(dest => dest.FromLocationTitle, 
            opt => opt.MapFrom(src => src.FromLocation.Title))
            
            .ForMember(dest => dest.ToLocationTitle, 
            opt => opt.MapFrom(src => src.ToLocation.Title))
            
            .ForMember(dest => dest.FromCityTitle, 
            opt => opt.MapFrom(src => src.FromLocation.City.Title))
            
             .ForMember(dest => dest.ToCityTitle, 
             opt => opt.MapFrom(src => src.ToLocation.City.Title));

        CreateMap<City, CityDto>();
        }
    }

Result & Result Status (Amin)

IService & Service (Amin)

Controller (Amin)

Inserting Sample Data

For testing purposes, add some data into the related tables. You are provided with a SQL script, that adds some sample data into the following tables

Important Notes: Note that different database names, and different table names will produce errors while executing the script. Consider adjusting these names before executing the script

Cities
Companies
LocationTypes
Locations
VehicleTypes
Vehicles
Transportation
Open TransportationRelatedSampleData.sql with SSMS, and execute the query

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