using DS.Module.Core;
using DS.Module.SqlSugar;
using DS.Module.UserModule;
using DS.WMS.Core.Flow.Entity;
using DS.WMS.Core.Sys.Interface;
using Microsoft.Extensions.DependencyInjection;
using SqlSugar;

namespace DS.WMS.Core
{
    /// <summary>
    /// 服务基类
    /// </summary>
    public abstract class ServiceBase
    {
        /// <summary>
        /// 获取服务容器
        /// </summary>
        protected IServiceProvider ServiceProvider { get; private set; }
        /// <summary>
        /// 获取用户相关信息
        /// </summary>
        protected IUser User { get; private set; }
        /// <summary>
        /// 获取主库访问对象
        /// </summary>
        protected ISqlSugarClient Db { get; private set; }
        /// <summary>
        /// 获取业务库访问对象
        /// </summary>
        protected ISaasDbService SaasService { get; private set; }

        readonly Lazy<ICommonService> commonService;

        SqlSugarScopeProvider? _tenantDb;
        /// <summary>
        /// 获取业务库访问对象
        /// </summary>
        protected SqlSugarScopeProvider TenantDb
        {
            get
            {
                if (_tenantDb == null)
                    _tenantDb = SaasService.GetBizDbScopeById(User.TenantId);

                return _tenantDb;
            }
        }

        /// <summary>
        /// 初始化
        /// </summary>
        /// <param name="serviceProvider">服务提供程序</param>
        protected ServiceBase(IServiceProvider serviceProvider)
        {
            ServiceProvider = serviceProvider;
            User = serviceProvider.GetRequiredService<IUser>();
            Db = serviceProvider.GetRequiredService<ISqlSugarClient>();
            SaasService = serviceProvider.GetRequiredService<ISaasDbService>();
            commonService = new Lazy<ICommonService>(serviceProvider.GetRequiredService<ICommonService>());
        }

        /// <summary>
        /// 获取查询对象
        /// </summary>
        /// <typeparam name="T">对象类型</typeparam>
        /// <returns></returns>
        protected internal ISugarQueryable<T> AsQueryable<T>() where T : class
        {
            (ISugarQueryable<T> query, _) = commonService.Value.GetVisibleDataRuleFilter<T>(TenantDb)
                .GetAwaiter().GetResult();

            return query;
        }

        /// <summary>
        /// 查找审批模板
        /// </summary>
        /// <param name="auditType">审批类型</param>
        /// <returns></returns>
        protected internal async Task<FlowTemplate> FindTemplateAsync(TaskBaseTypeEnum auditType)
        {
            long tid = long.Parse(User.TenantId);
            return await TenantDb.Queryable<FlowTemplate>().OrderByDescending(x => x.CreateTime).Take(1)
                .FirstAsync(x => x.Status == StatusEnum.Enable && x.AuditType == auditType);
        }
    }
}