using Admin.Core.Common.Auth;
using Admin.Core.Common.BaseModel;
using Admin.Core.Common.Cache;
using Admin.Core.Common.Configs;
using Admin.Core.Model.Admin;
using FreeSql;
using Microsoft.Extensions.DependencyInjection;
using System;

namespace Admin.Core.Repository
{
    public static class IdleBusExtesions
    {
        /// <summary>
        /// 获得FreeSql实例
        /// </summary>
        /// <param name="ib"></param>
        /// <param name="serviceProvider"></param>
        /// <returns></returns>
        public static IFreeSql GetFreeSql(this IdleBus<IFreeSql> ib, IServiceProvider serviceProvider)
        {
            var user = serviceProvider.GetRequiredService<IUser>();
            var appConfig = serviceProvider.GetRequiredService<AppConfig>();

            if (appConfig.Tenant && user.DataIsolationType == DataIsolationType.OwnDb)
            {
                var tenantName = "tenant_" + user.TenantId?.ToString();
                ib.TryRegister(tenantName, () => CreateFreeSql(user, appConfig, serviceProvider));
                return ib.Get(tenantName);
            }
            else
            {
                var freeSql = serviceProvider.GetRequiredService<IFreeSql>();
                return freeSql;
            }
        }

        /// <summary>
        /// 创建FreeSql实例
        /// </summary>
        /// <param name="user"></param>
        /// <param name="appConfig"></param>
        /// <param name="serviceProvider"></param>
        /// <returns></returns>
        private static IFreeSql CreateFreeSql(IUser user, AppConfig appConfig, IServiceProvider serviceProvider)
        {
            var dbConfig = serviceProvider.GetRequiredService<DbConfig>();
            
            //查询租户数据库信息
            var freeSql = serviceProvider.GetRequiredService<IFreeSql>();
            var tenantRepository = freeSql.GetRepository<TenantEntity>();
            var tenant = tenantRepository.Select.DisableGlobalFilter("Tenant").WhereDynamic(user.TenantId).ToOne(a => new { a.DbType, a.ConnectionString });

            var freeSqlBuilder = new FreeSqlBuilder()
                    .UseConnectionString(tenant.DbType.Value, tenant.ConnectionString)
                    .UseAutoSyncStructure(false)
                    .UseLazyLoading(false)
                    .UseNoneCommandParameter(true);

            #region 监听所有命令

            if (dbConfig.MonitorCommand)
            {
                freeSqlBuilder.UseMonitorCommand(cmd => { }, (cmd, traceLog) =>
                {
                    Console.WriteLine($"{cmd.CommandText}\r\n");
                });
            }

            #endregion 监听所有命令

            var fsql = freeSqlBuilder.Build();
            fsql.GlobalFilter.Apply<IEntitySoftDelete>("SoftDelete", a => a.IsDeleted == false);

            //配置实体
            DbHelper.ConfigEntity(fsql, appConfig);

            #region 监听Curd操作

            if (dbConfig.Curd)
            {
                fsql.Aop.CurdBefore += (s, e) =>
                {
                    Console.WriteLine($"{e.Sql}\r\n");
                };
            }

            #endregion 监听Curd操作

            #region 审计数据

            //计算服务器时间
            var serverTime = fsql.Select<DualEntity>().Limit(1).First(a => DateTime.UtcNow);
            var timeOffset = DateTime.UtcNow.Subtract(serverTime);
            fsql.Aop.AuditValue += (s, e) =>
            {
                DbHelper.AuditValue(e, timeOffset, user);
            };

            #endregion 审计数据

            return fsql;
        }
    }
}