using Admin.NET.Plugin.AiDOP.Entity;
using Admin.NET.Plugin.AiDOP.Manufacturing.Dto;
using Admin.NET.Plugin.ApprovalFlow;
using Admin.NET.Plugin.ApprovalFlow.Service;
using Yitter.IdGenerator;

namespace Admin.NET.Plugin.AiDOP.Manufacturing;

/// <summary>
/// S6 过程检验单（IPQC）检验员+主管流程服务（v2：含整批判定驱动的质量处置分流）。
///
/// N1_INSPECT 检验员录入 → 提交 → N2_SUP_REVIEW 主管整批审核：
///   整批合格(Qualified=true) → GW_RESULT(disposition_required=0) → end；
///   整批不合格(Qualified=false) → GW_RESULT(disposition_required=1) → N3_QUALITY_DISPOSITION（见 IpqcInspectionDispositionService）。
/// 退回：N2→N1。复用 ApprovalFlow 引擎（StartFlow/Approve/ReturnToPrev + IFlowBizHandler），不改核心。
/// 整批判定 jgpd 写 qms_gcjyd 白名单列（可空、不硬编码枚举）；disposition_required 落扩展表作网关判据（与 jgpd 整批判定一致）。
/// 项目级 pd（qms_gcjydzb）仅明细展示辅助，不驱动整批流程。不回写 qms_gcjyd.status；不写库存/生产/仓储。
/// 正常鉴权（非 AllowAnonymous）；权限以当前用户 pending task 归属为准。
/// </summary>
[ApiDescriptionSettings(Order = 312, Description = "过程检验单流程")]
[Route("api/IpqcInspectionFlow")]
[NonUnify]
public class IpqcInspectionFlowService : IDynamicApiController, ITransient
{
    private readonly ISqlSugarClient _db;
    private readonly FlowEngineService _flowEngine;
    private readonly UserManager _userManager;

    public IpqcInspectionFlowService(ISqlSugarClient db, FlowEngineService flowEngine, UserManager userManager)
    {
        _db = db;
        _flowEngine = flowEngine;
        _userManager = userManager;
    }

    /// <summary>
    /// 检验单流程状态（只读，供前端按钮控制）。
    /// </summary>
    [DisplayName("过程检验单流程状态")]
    [HttpGet("state")]
    public async Task<IpqcFlowStateOutput> GetState([FromQuery] long id)
    {
        await EnsureBillExistsAsync(id);
        return await BuildStateAsync(id);
    }

    /// <summary>
    /// 检验员提交检验结果（写 qms_gcjyd 白名单列 + 推进 N1→N2）。
    /// </summary>
    [DisplayName("检验员提交检验结果")]
    [HttpPost("submit-inspection")]
    public async Task<IpqcFlowStateOutput> SubmitInspection([FromBody] IpqcSubmitInspectionInput input)
    {
        var billNo = await EnsureBillExistsAsync(input.Id);

        // 参数校验（不合格数不得为负、不得大于样本量；合格数不得为负）
        if (input.Jyhgsl < 0) throw Oops.Oh("检验合格数量不能为负");
        if (input.Jybhgsl < 0) throw Oops.Oh("检验不合格数量不能为负");
        if (input.Ybl is < 0) throw Oops.Oh("样本量不能为负");
        if (input.Ybl is > 0 && input.Jybhgsl > input.Ybl.Value)
            throw Oops.Oh("不合格数量不能大于样本量（检验数）");

        var inst = await GetLatestInstanceAsync(input.Id);
        if (inst != null && inst.Status != FlowInstanceStatusEnum.Running)
            throw Oops.Oh("该检验单流程已结束，无法再提交检验结果");

        var now = DateTime.Now;
        var inspectorName = _userManager.RealName ?? _userManager.Account;

        var tran = await _db.AsTenant().UseTranAsync(async () =>
        {
            // 无运行中实例 → 起流程（自动生成 N1 任务给检验员角色成员）
            long instanceId;
            if (inst == null)
            {
                instanceId = await _flowEngine.StartFlow(new StartFlowInput
                {
                    BizType = IpqcInspectionFlowConst.BizType,
                    BizId = input.Id,
                    BizNo = billNo,
                    Title = $"过程检验单 {billNo}",
                    Comment = input.Comment,
                });
            }
            else
            {
                instanceId = inst.Id;
            }

            var myTask = await GetMyPendingTaskAsync(instanceId);
            if (myTask == null)
                throw Oops.Oh("当前用户没有待处理的检验任务（需检验员角色成员）");
            if (myTask.NodeId != IpqcInspectionFlowConst.NodeInspect)
                throw Oops.Oh("当前不在检验录入节点，无法提交检验结果");

            // 写检验结果（仅 qms_gcjyd 白名单列 jgpd/jyhgsl/jybhgsl/ybl/jyr/bz；jgpd 可空不强写）
            await _db.Ado.ExecuteCommandAsync(
                "UPDATE qms_gcjyd SET jgpd=@jgpd, jyhgsl=@jyhgsl, jybhgsl=@jybhgsl, ybl=@ybl, jyr=@jyr, bz=@bz WHERE id=@id",
                new List<SugarParameter>
                {
                    new("@jgpd", input.Jgpd.HasValue ? input.Jgpd.Value : (object?)null),
                    new("@jyhgsl", input.Jyhgsl),
                    new("@jybhgsl", input.Jybhgsl),
                    new("@ybl", input.Ybl.HasValue ? input.Ybl.Value : (object?)null),
                    new("@jyr", inspectorName),
                    new("@bz", input.Bz),
                    new("@id", input.Id),
                });

            // 落轻量扩展表（提交人/提交时间/业务状态，不回写 qms_gcjyd.status）
            await UpsertFlowStateAsync(input.Id, billNo, instanceId, IpqcInspectionFlowConst.StatusPendingReview,
                IpqcInspectionFlowConst.NodeSupervisor, now, isSubmit: true, inspectorName: inspectorName);

            // 推进 N1 → N2
            await _flowEngine.Approve(myTask.Id, input.Comment);
        });
        if (!tran.IsSuccess) throw tran.ErrorException;

        return await BuildStateAsync(input.Id);
    }

    /// <summary>
    /// 检验主管通过（整批判定）：Qualified=true 整批合格→end；Qualified=false 整批不合格→N3 质量处置。
    /// 写整批 jgpd（可空、不硬编码枚举）+ disposition_required（网关判据），再 Approve→GW_RESULT 分流。
    /// </summary>
    [DisplayName("检验主管通过")]
    [HttpPost("supervisor-approve")]
    public async Task<IpqcFlowStateOutput> SupervisorApprove([FromBody] IpqcSupervisorApproveInput input)
    {
        var billNo = await EnsureBillExistsAsync(input.Id);
        var (inst, myTask) = await RequireSupervisorTaskAsync(input.Id);
        var now = DateTime.Now;
        var supervisorName = _userManager.RealName ?? _userManager.Account;
        var dispositionRequired = input.Qualified ? 0 : 1;
        var businessStatus = input.Qualified ? IpqcInspectionFlowConst.StatusApproved : IpqcInspectionFlowConst.StatusPendingDisposition;
        var nextNode = input.Qualified ? null : IpqcInspectionFlowConst.NodeDisposition;

        var tran = await _db.AsTenant().UseTranAsync(async () =>
        {
            // 整批判定 jgpd 写 qms_gcjyd 白名单列（可空，不硬编码枚举；由前端传测试/已确认合法值）
            if (input.Jgpd.HasValue)
                await _db.Ado.ExecuteCommandAsync(
                    "UPDATE qms_gcjyd SET jgpd=@jgpd WHERE id=@id",
                    new List<SugarParameter> { new("@jgpd", input.Jgpd.Value), new("@id", input.Id) });

            // 先写 disposition_required（GW_RESULT 网关判据，Approve 时 GetBizData 读取）再推进
            await UpsertFlowStateAsync(input.Id, billNo, inst.Id, businessStatus, nextNode, now,
                isSubmit: false, reviewResult: input.Qualified ? "APPROVED" : "TO_DISPOSITION",
                supervisorName: supervisorName, dispositionRequired: dispositionRequired);
            await _flowEngine.Approve(myTask.Id, input.Comment);
        });
        if (!tran.IsSuccess) throw tran.ErrorException;

        return await BuildStateAsync(input.Id);
    }

    /// <summary>
    /// 检验主管退回（N2 → 回 N1，意见必填）。
    /// </summary>
    [DisplayName("检验主管退回")]
    [HttpPost("supervisor-return")]
    public async Task<IpqcFlowStateOutput> SupervisorReturn([FromBody] IpqcSupervisorReturnInput input)
    {
        if (string.IsNullOrWhiteSpace(input.Comment))
            throw Oops.Oh("退回必须填写意见");

        var billNo = await EnsureBillExistsAsync(input.Id);
        var (inst, myTask) = await RequireSupervisorTaskAsync(input.Id);
        var now = DateTime.Now;
        var supervisorName = _userManager.RealName ?? _userManager.Account;

        var tran = await _db.AsTenant().UseTranAsync(async () =>
        {
            await UpsertFlowStateAsync(input.Id, billNo, inst.Id, IpqcInspectionFlowConst.StatusReturned,
                IpqcInspectionFlowConst.NodeInspect, now, isSubmit: false, reviewResult: "RETURNED",
                supervisorName: supervisorName, returnReason: input.Comment);
            await _flowEngine.ReturnToPrev(myTask.Id, input.Comment);
        });
        if (!tran.IsSuccess) throw tran.ErrorException;

        return await BuildStateAsync(input.Id);
    }

    // ───────────────────────── helpers ─────────────────────────

    /// <summary>校验检验单存在并返回 djbh（无 djbh 用 id 兜底）。</summary>
    private async Task<string> EnsureBillExistsAsync(long id)
    {
        if (id <= 0) throw Oops.Oh("检验单 id 非法");
        var rows = await _db.Ado.SqlQueryAsync<string>(
            "SELECT djbh FROM qms_gcjyd WHERE id=@id LIMIT 1",
            new List<SugarParameter> { new("@id", id) });
        if (rows.Count == 0) throw Oops.Oh("检验单不存在");
        return rows[0] ?? id.ToString();
    }

    /// <summary>取该检验单最新流程实例（BizType+BizId，跨数据范围）。</summary>
    private async Task<ApprovalFlowInstance?> GetLatestInstanceAsync(long bizId)
    {
        return await _db.Queryable<ApprovalFlowInstance>()
            .ClearFilter()
            .Where(x => x.BizType == IpqcInspectionFlowConst.BizType && x.BizId == bizId)
            .OrderByDescending(x => x.Id)
            .FirstAsync();
    }

    /// <summary>取当前用户在指定实例下的待办任务。</summary>
    private async Task<ApprovalFlowTask?> GetMyPendingTaskAsync(long instanceId)
    {
        var userId = _userManager.UserId;
        return await _db.Queryable<ApprovalFlowTask>()
            .ClearFilter()
            .Where(x => x.InstanceId == instanceId && x.AssigneeId == userId && x.Status == FlowTaskStatusEnum.Pending)
            .FirstAsync();
    }

    /// <summary>校验并返回主管 N2 待办任务。</summary>
    private async Task<(ApprovalFlowInstance inst, ApprovalFlowTask task)> RequireSupervisorTaskAsync(long bizId)
    {
        var inst = await GetLatestInstanceAsync(bizId);
        if (inst == null) throw Oops.Oh("该检验单尚未发起流程");
        if (inst.Status != FlowInstanceStatusEnum.Running) throw Oops.Oh("该检验单流程已结束");
        var myTask = await GetMyPendingTaskAsync(inst.Id);
        if (myTask == null) throw Oops.Oh("当前用户没有待处理的审核任务（需检验主管角色成员）");
        if (myTask.NodeId != IpqcInspectionFlowConst.NodeSupervisor) throw Oops.Oh("当前不在主管审核节点");
        return (inst, myTask);
    }

    /// <summary>当前用户是否具备指定角色（跨数据范围）。</summary>
    private async Task<bool> HasRoleAsync(long roleId)
    {
        var userId = _userManager.UserId;
        return await _db.Queryable<SysUserRole>()
            .ClearFilter()
            .AnyAsync(x => x.UserId == userId && x.RoleId == roleId);
    }

    /// <summary>Upsert 流程状态扩展表（不回写 qms_gcjyd.status）。dispositionRequired 非空时更新网关判据。</summary>
    private async Task UpsertFlowStateAsync(long inspectionId, string billNo, long instanceId, string businessStatus,
        string? currentNode, DateTime now, bool isSubmit, string? inspectorName = null, string? supervisorName = null,
        string? reviewResult = null, string? returnReason = null, int? dispositionRequired = null)
    {
        var existing = await _db.Queryable<AdoS6IpqcInspectionFlowState>()
            .ClearFilter()
            .Where(x => x.InspectionId == inspectionId)
            .FirstAsync();

        if (existing == null)
        {
            var row = new AdoS6IpqcInspectionFlowState
            {
                Id = YitIdHelper.NextId(),
                TenantId = _userManager.TenantId,
                InspectionId = inspectionId,
                InspectionNo = billNo,
                BizType = IpqcInspectionFlowConst.BizType,
                FlowInstanceId = instanceId,
                BusinessStatus = businessStatus,
                CurrentNode = currentNode,
                DispositionRequired = dispositionRequired,
                RowVersion = 1,
                CreateTime = now,
            };
            if (isSubmit)
            {
                row.InspectorUserId = _userManager.UserId;
                row.InspectorName = inspectorName;
                row.SubmittedAt = now;
            }
            else
            {
                row.SupervisorUserId = _userManager.UserId;
                row.SupervisorName = supervisorName;
                row.ReviewedAt = now;
                row.ReviewResult = reviewResult;
                row.ReturnReason = returnReason;
            }
            await _db.Insertable(row).ExecuteCommandAsync();
            return;
        }

        existing.FlowInstanceId = instanceId;
        existing.BusinessStatus = businessStatus;
        existing.CurrentNode = currentNode;
        if (dispositionRequired.HasValue) existing.DispositionRequired = dispositionRequired;
        existing.RowVersion = (existing.RowVersion ?? 0) + 1;
        existing.UpdateTime = now;
        if (isSubmit)
        {
            existing.InspectorUserId = _userManager.UserId;
            existing.InspectorName = inspectorName;
            existing.SubmittedAt = now;
        }
        else
        {
            existing.SupervisorUserId = _userManager.UserId;
            existing.SupervisorName = supervisorName;
            existing.ReviewedAt = now;
            existing.ReviewResult = reviewResult;
            existing.ReturnReason = returnReason;
        }
        await _db.Updateable(existing).ExecuteCommandAsync();
    }

    /// <summary>组装流程状态输出。</summary>
    private async Task<IpqcFlowStateOutput> BuildStateAsync(long bizId)
    {
        var output = new IpqcFlowStateOutput { BizId = bizId };
        var inst = await GetLatestInstanceAsync(bizId);

        var state = await _db.Queryable<AdoS6IpqcInspectionFlowState>()
            .ClearFilter()
            .Where(x => x.InspectionId == bizId)
            .FirstAsync();
        if (state != null)
        {
            output.BusinessStatus = state.BusinessStatus;
            output.InspectorName = state.InspectorName;
            output.SupervisorName = state.SupervisorName;
            output.DispositionRequired = state.DispositionRequired;
        }
        output.HasDisposition = await _db.Queryable<AdoS6IpqcQualityDisposition>()
            .ClearFilter().AnyAsync(x => x.InspectionId == bizId && x.Status == 1);

        if (inst == null)
        {
            output.FlowStatus = "NotStarted";
            output.CanSubmitResult = await HasRoleAsync(IpqcInspectionFlowConst.RoleInspectorId);
            output.Message = output.CanSubmitResult ? "待检验员录入结果" : "尚未发起流程";
            return output;
        }

        output.InstanceId = inst.Id;
        output.FlowStatus = inst.Status.ToString();
        output.UpdatedAt = inst.EndTime ?? inst.StartTime;

        if (inst.Status != FlowInstanceStatusEnum.Running)
        {
            output.IsCompleted = true;
            output.Message = inst.Status == FlowInstanceStatusEnum.Approved ? "流程已完成（主管审核通过）" : $"流程已结束（{inst.Status}）";
            return output;
        }

        output.CurrentNodeCode = inst.CurrentNodeId;
        var myTask = await GetMyPendingTaskAsync(inst.Id);
        if (myTask != null)
        {
            output.CurrentNodeName = myTask.NodeName;
            if (myTask.NodeId == IpqcInspectionFlowConst.NodeInspect)
            {
                output.CurrentAssigneeRole = IpqcInspectionFlowConst.RoleInspectorCode;
                output.CanSubmitResult = true;
                output.Message = "待当前用户录入检验结果";
            }
            else if (myTask.NodeId == IpqcInspectionFlowConst.NodeSupervisor)
            {
                output.CurrentAssigneeRole = IpqcInspectionFlowConst.RoleSupervisorCode;
                output.CanSupervisorApprove = true;
                output.CanSupervisorReturn = true;
                output.Message = "待当前用户主管审核";
            }
            else if (myTask.NodeId == IpqcInspectionFlowConst.NodeDisposition)
            {
                output.CurrentAssigneeRole = IpqcInspectionFlowConst.RoleQualityEngineerCode;
                output.CanSubmitDisposition = true;
                output.Message = "待当前用户提交质量处置";
            }
        }
        else
        {
            output.CurrentAssigneeRole = inst.CurrentNodeId switch
            {
                IpqcInspectionFlowConst.NodeInspect => IpqcInspectionFlowConst.RoleInspectorCode,
                IpqcInspectionFlowConst.NodeDisposition => IpqcInspectionFlowConst.RoleQualityEngineerCode,
                _ => IpqcInspectionFlowConst.RoleSupervisorCode,
            };
            output.Message = "流程进行中（当前用户无待办）";
        }
        return output;
    }
}