using Easy;
using Easy.DDD.Domain;
using Easy.DDD.Domain.Repositories;
using Identity.Api.Clean.Domain.Entites;
using Identity.Api.Clean.Shared.IServices;
using Microsoft.EntityFrameworkCore;

namespace Identity.Api.Clean.Domain.Services;

public class OrganizationUnitManager : DomainService, IOrganizationUnitManager
{
    protected IRepository<OrganizationUnit> OrganizationUnitRepository { get; }
    public OrganizationUnitManager(IRepository<OrganizationUnit> organizationUnitRepository)
    {
        OrganizationUnitRepository = organizationUnitRepository;
    }

    public virtual async Task CreateAsync(OrganizationUnit organizationUnit)
    {
        organizationUnit.Code = await GetNextChildCodeAsync(organizationUnit.ParentId);
        await ValidateOrganizationUnitAsync(organizationUnit);
    }


    protected virtual async Task ValidateOrganizationUnitAsync(OrganizationUnit organizationUnit)
    {
        var existDisplayName = await OrganizationUnitRepository
            .Where(ou => ou.Id != organizationUnit.Id)
            .Select(o => o.DisplayName)
            .ContainsAsync(organizationUnit.DisplayName);

        var message = "重复的组织单元显示名称:" + organizationUnit.DisplayName;

        When.Is(existDisplayName, message);
    }

    public virtual async Task DeleteAsync(Guid id)
    {
        var code = await GetCodeOrDefaultAsync(id);
        await OrganizationUnitRepository.Set
            .Include(o => o.Roles)
            .Where(ou => ou.Code.StartsWith(code))
            .DeleteFromQueryAsync();
    }

    public virtual async Task<string> GetNextChildCodeAsync(Guid? parentId)
    {
        string parentCode = null;
        if (parentId != null)
        {
            var lastChild = await OrganizationUnitRepository
                .Where(o => o.ParentId == parentId)
                .OrderByDescending(c => c.Code)
                .FirstOrDefaultAsync();

            if (lastChild != null)
            {
                return OrganizationUnit.CalculateNextCode(lastChild.Code);
            }
            parentCode = await GetCodeOrDefaultAsync(parentId.Value);
        }
        return OrganizationUnit.AppendCode(parentCode, OrganizationUnit.CreateCode(1));
    }

    public virtual async Task<string> GetCodeOrDefaultAsync(Guid id)
    {
        return await OrganizationUnitRepository.Set
            .Where(o => o.Id == id)
            .Select(o => o.Code)
            .FirstOrDefaultAsync();
    }

    public virtual async Task AddRoleToOrganizationUnitAsync(Guid roleId, Guid ouId)
    {
        OrganizationUnit ou = await OrganizationUnitRepository.Set
            .Include(o => o.Roles)
            .FirstOrDefaultAsync(o => o.Id == ouId);

        ou.AddRole(roleId);

        await OrganizationUnitRepository.UpdateAsync(ou, true);
    }
    public virtual async Task RemoveRoleFromOrganizationUnitAsync(Guid roleId, Guid ouId)
    {
        OrganizationUnit ou = await OrganizationUnitRepository.Set
            .Include(o => o.Roles)
            .FirstOrDefaultAsync(o => o.Id == ouId);

        ou.RemoveRole(roleId);

        await OrganizationUnitRepository.UpdateAsync(ou, true);
    }
}