using System.Linq.Expressions;
using DS.Module.Core;
using DS.Module.Core.Extensions;
using DS.WMS.Core.Flow.Dtos;
using DS.WMS.Core.Flow.Entity;
using DS.WMS.Core.Flow.Interface;
using DS.WMS.Core.Op.Entity;
using DS.WMS.Core.Sys.Entity;
using Mapster;
using Masuit.Tools.Systems;

namespace DS.WMS.Core.Flow.Method;

/// <summary>
/// 租户端工作流实例管理
/// </summary>
public class ClientFlowInstanceService : FlowInstanceService, IClientFlowInstanceService
{
    /// <summary>
    /// 初始化
    /// </summary>
    /// <param name="serviceProvider"></param>
    public ClientFlowInstanceService(IServiceProvider serviceProvider) : base(serviceProvider)
    {
    }

    /// <summary>
    /// 确定工作流是否正在运行中
    /// </summary>
    /// <param name="type">工作流类型</param>
    /// <param name="businessType">业务类型</param>
    /// <param name="ids">业务ID</param>
    /// <returns></returns>
    public async Task<bool> IsRunning(TaskBaseTypeEnum type, BusinessType? businessType = null, params long[] ids)
    {
        return await Exists(type, businessType,
            x => x.FlowStatus == FlowStatusEnum.Ready || x.FlowStatus == FlowStatusEnum.Running, ids);
    }

    /// <summary>
    /// 确定工作流是否存在
    /// </summary>
    /// <param name="type">工作流类型</param>
    /// <param name="businessType">业务类型</param>
    /// <param name="expression">自定义查询条件</param>
    /// <param name="ids">业务ID</param>
    /// <returns></returns>
    public async Task<bool> Exists(TaskBaseTypeEnum? type = null,
        BusinessType? businessType = null,
        Expression<Func<FlowInstance, bool>>? expression = null,
        params long[] ids)
    {
        if (ids == null || ids.Length == 0)
            return false;

        return await Db.Queryable<FlowInstance>().Where(x => ids.Contains(x.BusinessId))
        .WhereIF(type.HasValue, x => x.AuditType == type)
        .WhereIF(businessType.HasValue, x => x.BusinessType == businessType)
        .WhereIF(expression != null, expression)
        .AnyAsync();
    }

    /// <summary>
    /// 根据业务ID获取待处理的工作流
    /// </summary>
    /// <param name="type">工作流类型</param>
    /// /// <param name="businessType">业务类型</param>
    /// <param name="ids">业务ID</param>
    /// <returns></returns>
    public async Task<List<FlowInstance>> GetInstanceByBSIdAsync(TaskBaseTypeEnum type, BusinessType? businessType = null, params long[] ids)
    {
        if (ids == null || ids.Length == 0)
            return [];

        return await Db.Queryable<FlowInstance>().Where(x => x.AuditType == type && ids.Contains(x.BusinessId) &&
            (x.FlowStatus == FlowStatusEnum.Ready || x.FlowStatus == FlowStatusEnum.Running))
            .WhereIF(businessType.HasValue, x => x.BusinessType == businessType)
            .OrderByDescending(x => x.CreateTime).Take(1).ToListAsync();
    }

    protected override FlowInstance? BuildInstance(CreateFlowInstanceReq req)
    {
        if (string.IsNullOrEmpty(req.TemplateId.ToString()))
            return null;

        FlowTemplateTenant template = Db.Queryable<FlowTemplateTenant>().First(x => x.Id == req.TemplateId);

        return template == null ? null : new FlowInstance
        {
            CustomName = template.Name,
            TemplateId = template.Id,
            BusinessId = req.BusinessId,
            BusinessType = req.BusinessType,
            PermissionId = template.PermissionId,
            ColumnView = template.ColumnView,
            Content = template.Content,
            MarkerNotifyURL = template.MarkerNotifyURL,
            CallbackURL = template.CallbackURL,
            AuditType = template.AuditType
        };
    }

    protected override string GetForkNodeMakers(FlowRuntime wfruntime, string forkNodeId)
    {
        string makerList = "";

        var nextNode = wfruntime.NextNode;

        var nextConditionNodeId = wfruntime.GetNextConditionNodeId(nextNode);
        var nextConditionNode = wfruntime.ChildNodes.Find(x => x.Id == nextConditionNodeId);
        if (nextConditionNode == null)
            return makerList;

        if (nextConditionNode.AssigneeType == "role")
        {
            var users = Db.Queryable<SysRoleUser>().Where(x =>
                    nextConditionNode.Roles.Contains(x.RoleId.ToString()))
                .Select(x => x.UserId).Distinct().ToList();
            makerList = string.Join(",", users);
        }
        else if (nextConditionNode.AssigneeType == "user")
        {
            makerList = string.Join(",", nextConditionNode.Users);
        }

        return makerList;
    }

    protected override FlowRuntime CreateRuntimeService(FlowInstance instance)
    {
        return new FlowRuntime(instance, Db, TenantDb);
    }

    /// <summary>
    /// 获取工作流实例信息
    /// </summary>
    /// <param name="businessId">业务ID</param>
    /// <param name="businessType">业务类型</param>
    /// <param name="types">审批类型</param>
    /// <returns></returns>
    public DataResult<List<FlowInstanceRes>> GetFlowInstances(long businessId, BusinessType? businessType, params TaskBaseTypeEnum[]? types)
    {
        var query = Db.Queryable<FlowInstance>().Where(x => x.BusinessId == businessId && x.FlowStatus != FlowStatusEnum.Ready)
            .WhereIF(businessType.HasValue, x => x.BusinessType == businessType.Value)
            .WhereIF(types != null && types.Length > 0, x => types.Contains(x.AuditType.Value));

        var list = query.Select(x => new FlowInstance
        {
            Id = x.Id,
            Content = x.Content,
            AuditType = x.AuditType,
            FlowStatus = x.FlowStatus
        }).ToList();

        var list2 = list.Select(x => x.Adapt<FlowInstanceRes>()).ToList();
        foreach (var item in list2)
        {
            item.AuditTypeName = item.AuditType?.GetDescription();
        }

        return DataResult<List<FlowInstanceRes>>.Success(list2);
    }

    /// <summary>
    /// 工作流审批
    /// </summary>
    /// <param name="info">工作流实例</param>
    /// <returns></returns>
    public DataResult AuditFlowInstance(FlowAuditInfo info)
    {
        ArgumentNullException.ThrowIfNull(info, nameof(info));

        if (info.Instance == null)
            return DataResult.Failed("未能获取工作流", MultiLanguageConst.Operation_Failed);

        if (info.Instance.FlowStatus == FlowStatusEnum.Approve)
            return DataResult.Failed("该工作流已完成!", MultiLanguageConst.FlowInstanceFinished);

        if (info.Instance.CallbackURL.IsNullOrEmpty())
        {
            var template = Db.Queryable<FlowTemplateTenant>().Where(x => x.Id == info.Instance.TemplateId)
                .Select(x => new { x.MarkerNotifyURL, x.CallbackURL }).First();

            info.Instance.CallbackURL = template.CallbackURL;
            info.Instance.MarkerNotifyURL = template.MarkerNotifyURL;
        }

        return AuditFlowCore(info.Status, info.AuditNote, info.Instance);
    }

    /// <summary>
    /// 撤销审核
    /// </summary>
    /// <param name="taskType">任务类型</param>
    /// <param name="bsIds">业务ID</param>
    /// <param name="businessType">业务类型</param>
    /// <param name="note">备注</param>
    /// <returns></returns>
    public async Task<DataResult> WithdrawAsync(TaskBaseTypeEnum taskType, long[] bsIds,
        BusinessType? businessType = null, string? note = null)
    {
        var instances = await GetInstanceByBSIdAsync(taskType, businessType, bsIds);
        return await WithdrawCoreAsync(instances, note);
    }

    /// <summary>
    /// 撤销审核
    /// </summary>
    /// <param name="ids">ID</param>
    /// <param name="note">备注</param>
    /// <returns></returns>
    public async Task<DataResult> WithdrawAsync(long[] ids, string? note = null)
    {
        var instances = ids.Select(x => new FlowInstance
        {
            Id = x,
            ActivityId = FlowChild.END,
            MakerList = string.Empty,
            FlowStatus = FlowStatusEnum.Draft,
            Note = note,
            //Deleted = true,
            //DeleteBy = userId,
            //DeleteTime = dt,
            //DeleteUserName = userInfo.UserName
        }).ToList();
        return await WithdrawCoreAsync(instances, note);
    }

    internal async Task<DataResult> WithdrawCoreAsync(List<FlowInstance> instances, string? note = null)
    {
        ArgumentNullException.ThrowIfNull(instances, nameof(instances));

        long userId = long.Parse(User.UserId);
        var userInfo = await Db.Queryable<SysUser>().Where(x => x.Id == userId).Select(x => new { x.Id, x.UserName }).FirstAsync();
        //DateTime dt = DateTime.Now;

        await Db.Ado.BeginTranAsync();
        try
        {
            await Db.Updateable(instances).UpdateColumns(x => new
            {
                x.ActivityId,
                x.MakerList,
                x.FlowStatus,
                x.Note,
                //x.Deleted,
                //x.DeleteBy,
                //x.DeleteTime,
                //x.DeleteUserName
            }).ExecuteCommandAsync();

            var historys = instances.Select(x => new FlowInstanceHistory
            {
                InstanceId = x.Id,
                Content = $"【撤销】由{userInfo.UserName}撤销，备注：{note}",
                Result = -1,
                UserName = userInfo.UserName
            }).ToList();
            await Db.Insertable(historys).ExecuteCommandAsync();

            await Db.Ado.CommitTranAsync();
            return DataResult.Successed("撤销成功!", MultiLanguageConst.FlowInstanceCancelSuccess);
        }
        catch (Exception ex)
        {
            await ex.LogAsync(Db);
            await Db.Ado.RollbackTranAsync();
            return DataResult.FailedWithDesc(MultiLanguageConst.Operation_Failed);
        }
    }
}