using Easy.AuthorityManagement.Clean.Shared.IServices;
using Easy.DDD.Domain;
using Easy.Snowflakes;

namespace Easy.AuthorityManagement.Clean.Domain.Services;

public class IdentityRoleManager : DomainService, IIdentityRoleManager
{
    protected IRepository<IdentityRole> IdentityRoleRepository => LazyServiceProvider.LazyGetService<IRepository<IdentityRole>>();

    private ISnowflakeIdGenerator SnowflakeIdGenerator => LazyServiceProvider.LazyGetService<ISnowflakeIdGenerator>();

    protected virtual async Task ValidateNameAsync(string name, long? expectedId = null)
    {
        When.Is(string.IsNullOrEmpty(name), "角色名称不能为空");

        var role = await IdentityRoleRepository.Set.FirstOrDefaultAsync(o => o.RoleName == name);

        When.Is(role != null && role.Id != expectedId, "重复的角色名称: " + name);
    }

    public async Task ChangeNameAsync(IdentityRole role, string roleName)
    {
        await ValidateNameAsync(roleName, role.Id);

        role.SetName(roleName);
    }

    public async Task<IdentityRole> CreateAsync(string roleName, long tenantId)
    {
        await ValidateNameAsync(roleName);

        return new IdentityRole(SnowflakeIdGenerator.Create(), roleName, tenantId);
    }
}