using Admin.NET.Plugin.ApprovalFlow;
using Admin.NET.Plugin.ApprovalFlow.Service;
using Admin.NET.Plugin.AiDOP.Entity.S8;

namespace Admin.NET.Plugin.AiDOP.Service.S8;

/// <summary>
/// EXCEPTION_CLOSURE 流程的 Biz 回调（双线合一后已退化为复检审批载体）。
/// 启动点：S8 提交复检；终态由 S8 业务侧（ApproveVerification/RejectVerification）决定。
/// 该 handler 只负责维护 ActiveFlowInstanceId 字段，不再改写 e.Status。
/// </summary>
public class ExceptionClosureBizHandler : IFlowBizHandler, ITransient
{
    public string BizType => "EXCEPTION_CLOSURE";

    private readonly SqlSugarRepository<AdoS8Exception> _rep;
    private readonly SqlSugarRepository<AdoS8ExceptionTimeline> _timelineRep;

    public ExceptionClosureBizHandler(
        SqlSugarRepository<AdoS8Exception> rep,
        SqlSugarRepository<AdoS8ExceptionTimeline> timelineRep)
    {
        _rep = rep;
        _timelineRep = timelineRep;
    }

    public async Task OnFlowStarted(long bizId, long instanceId)
    {
        var e = await _rep.GetByIdAsync(bizId) ?? throw new S8BizException("异常不存在");
        e.ActiveFlowInstanceId = instanceId;
        e.ActiveFlowBizType = BizType;
        e.UpdatedAt = DateTime.Now;
        await _rep.UpdateAsync(e);
        await InsertTimelineAsync(e.Id, "VERIFY_FLOW_START", "复检审批流启动", instanceId, null);
    }

    public async Task OnFlowCompleted(long bizId, long instanceId, FlowInstanceStatusEnum finalStatus, long? lastApproverId)
    {
        var e = await _rep.GetByIdAsync(bizId) ?? throw new S8BizException("异常不存在");
        e.ActiveFlowInstanceId = null;
        e.ActiveFlowBizType = null;
        e.UpdatedAt = DateTime.Now;
        await _rep.UpdateAsync(e);

        // 状态由 S8 服务层管控（VERIFY_APPROVED/VERIFY_REJECTED 时间线已写）。
        // 这里只补一条流程级审计标记，便于追溯审批实例终态。
        var label = finalStatus switch
        {
            FlowInstanceStatusEnum.Approved => "复检审批流通过",
            FlowInstanceStatusEnum.Rejected => "复检审批流拒绝",
            FlowInstanceStatusEnum.Cancelled => "复检审批流撤回",
            _ => "复检审批流结束",
        };
        await InsertTimelineAsync(e.Id, "VERIFY_FLOW_END", label, instanceId, lastApproverId);
    }

    public async Task<Dictionary<string, object>> GetBizData(long bizId)
    {
        var e = await _rep.GetByIdAsync(bizId);
        if (e == null) return new Dictionary<string, object>();
        return new Dictionary<string, object>
        {
            ["sceneCode"] = e.SceneCode ?? string.Empty,
            ["factoryCode"] = e.FactoryId.ToString(),
        };
    }

    private async Task InsertTimelineAsync(long exceptionId, string code, string label,
        long? instanceId, long? approverId)
    {
        string? remark = null;
        if (instanceId.HasValue && approverId.HasValue)
            remark = $"审批实例ID: {instanceId}，审批人: {approverId}";
        else if (instanceId.HasValue)
            remark = $"审批实例ID: {instanceId}";
        else if (approverId.HasValue)
            remark = $"审批人: {approverId}";

        await _timelineRep.InsertAsync(new AdoS8ExceptionTimeline
        {
            ExceptionId = exceptionId,
            ActionCode = code,
            ActionLabel = label,
            FromStatus = null,
            ToStatus = null,
            OperatorId = approverId,
            ActionRemark = remark,
            CreatedAt = DateTime.Now
        });
    }
}