using AutoMapper;
using DbFirst.Domain.DomainEntities;
using DbFirst.Domain.Repositories;

namespace DbFirst.Application.Catalogs;

public class CatalogService : ICatalogService
{
    private readonly ICatalogRepository _repository;
    private readonly IMapper _mapper;

    public CatalogService(ICatalogRepository repository, IMapper mapper)
    {
        _repository = repository;
        _mapper = mapper;
    }

    public async Task<List<CatalogReadDto>> GetAllAsync(CancellationToken cancellationToken = default)
    {
        var domainItems = await _repository.GetAllAsync(cancellationToken);
        return _mapper.Map<List<CatalogReadDto>>(domainItems);
    }

    public async Task<CatalogReadDto?> GetByIdAsync(int id, CancellationToken cancellationToken = default)
    {
        var domainItem = await _repository.GetByIdAsync(id, cancellationToken);
        return domainItem == null ? null : _mapper.Map<CatalogReadDto>(domainItem);
    }

    public async Task<CatalogReadDto> CreateAsync(CatalogWriteDto dto, CancellationToken cancellationToken = default)
    {
        var domainItem = _mapper.Map<Catalog>(dto);
        domainItem.AddedWho = "system";
        domainItem.AddedWhen = DateTime.UtcNow;
        domainItem.ChangedWho = "system";
        domainItem.ChangedWhen = DateTime.UtcNow;

        var created = await _repository.AddAsync(domainItem, cancellationToken);
        return _mapper.Map<CatalogReadDto>(created);
    }

    public async Task<bool> UpdateAsync(int id, CatalogWriteDto dto, CancellationToken cancellationToken = default)
    {
        var existing = await _repository.GetByIdAsync(id, cancellationToken);
        if (existing == null)
        {
            return false;
        }

        var domainItem = _mapper.Map<Catalog>(dto);
        domainItem.Guid = id;
        domainItem.AddedWho = existing.AddedWho;
        domainItem.AddedWhen = existing.AddedWhen;
        domainItem.ChangedWho = "system";
        domainItem.ChangedWhen = DateTime.UtcNow;
        return await _repository.UpdateAsync(id, domainItem, cancellationToken);
    }

    public async Task<CatalogReadDto?> UpdateWithStoredProcedureAsync(int id, CatalogWriteDto dto, CancellationToken cancellationToken = default)
    {
        var existing = await _repository.GetByIdAsync(id, cancellationToken);
        if (existing == null)
        {
            return null;
        }

        var domainItem = _mapper.Map<Catalog>(dto);
        domainItem.Guid = id;
        domainItem.AddedWho = existing.AddedWho;
        domainItem.AddedWhen = existing.AddedWhen;
        domainItem.ChangedWho = "system";
        domainItem.ChangedWhen = DateTime.UtcNow;

        var updated = await _repository.UpdateWithStoredProcedureAsync(domainItem, cancellationToken);
        return updated == null ? null : _mapper.Map<CatalogReadDto>(updated);
    }

    public async Task<bool> DeleteAsync(int id, CancellationToken cancellationToken = default)
    {
        return await _repository.DeleteAsync(id, cancellationToken);
    }

    public async Task<bool> DeleteWithStoredProcedureAsync(int id, CancellationToken cancellationToken = default)
    {
        return await _repository.DeleteWithStoredProcedureAsync(id, cancellationToken);
    }
}