using Admin.NET.Plugin.AiDOP.Dto.S8;
using Admin.NET.Plugin.AiDOP.Entity.S0.Manufacturing;
using Admin.NET.Plugin.AiDOP.Entity.S0.Warehouse;
using Admin.NET.Plugin.AiDOP.Entity.S8;
using Admin.NET.Plugin.AiDOP.Infrastructure.S8;
using Admin.NET.Plugin.AiDOP.Service.S8.Rules;
using Admin.NET.Plugin.ApprovalFlow.Service;
using Microsoft.Extensions.Logging;

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

public class S8ManualReportService : ITransient
{
    // S8-SEVERITY-FOLLOW-SERIOUS-STANDARDIZE-EXEC-1：业务枚举只保留 FOLLOW/SERIOUS。
    // 旧值 LOW/MEDIUM/HIGH/CRITICAL 仍可作为兼容输入（接收后由 S8SeverityCode.Normalize 归一）。
    private static readonly HashSet<string> AllowedSeverities = new(StringComparer.OrdinalIgnoreCase)
    {
        "FOLLOW", "SERIOUS",
        "LOW", "MEDIUM", "HIGH", "CRITICAL", // legacy compat
    };

    // S8-PROCESS-NODE-S1S7-ALIGN-1：process_node_code 当前阶段对齐 S1-S7 订单主流程。
    // 优先 module_code（已是 S1-S7），其次按 scene_code 反推；都无法识别则 null。
    // S8-PROCESS-NODE-MODULE-CODE-ALIGNMENT-EXEC-1：保留函数挂起待用——本阶段所有建单点不再调用，
    // 由 module_code 承担 S1-S7 主流程归属；未来引入更细流程节点（如 S2.PLAN / S6.WO_RELEASE）时恢复使用。
    private static string? ResolveProcessNodeCode(string? sceneCode, string? moduleCode)
    {
        if (!string.IsNullOrWhiteSpace(moduleCode) && S8ModuleCode.All.Contains(moduleCode))
            return moduleCode;
        var fromScene = S8ModuleCode.FromScene(sceneCode);
        if (!string.IsNullOrWhiteSpace(fromScene) && S8ModuleCode.All.Contains(fromScene))
            return fromScene;
        return null;
    }

    /// <summary>
    /// S8-EXCEPTION-CREATION-MODULE-CODE-FIX-1：建单 module_code 派生统一入口。
    /// 优先级：显式 module → hit module → 单模块 sceneCode（S1-S7）→ exception_type.scene_code。
    /// 严格 S1-S7 校验，不接受 legacy 复合 scene；最终无法确定时返回 null（caller 决定记日志或拒绝）。
    /// </summary>
    private async Task<string?> ResolveModuleCodeAsync(
        string? explicitModuleCode,
        string? hitModuleCode,
        string? sceneCode,
        string? exceptionTypeCode)
    {
        var byExplicit = S8ModuleCode.Normalize(explicitModuleCode);
        if (byExplicit != null) return byExplicit;

        var byHit = S8ModuleCode.Normalize(hitModuleCode);
        if (byHit != null) return byHit;

        var byScene = S8ModuleCode.FromCanonicalScene(sceneCode);
        if (byScene != null) return byScene;

        if (!string.IsNullOrWhiteSpace(exceptionTypeCode))
        {
            var typeScene = await _typeRep.AsQueryable().ClearFilter()
                .Where(t => t.TypeCode == exceptionTypeCode && t.Enabled)
                .OrderByDescending(t => t.FactoryId)
                .Select(t => t.SceneCode)
                .FirstAsync();
            var byType = S8ModuleCode.FromCanonicalScene(typeScene);
            if (byType != null) return byType;
        }

        return null;
    }

    private readonly SqlSugarRepository<AdoS8Exception> _rep;
    private readonly SqlSugarRepository<AdoS8ExceptionTimeline> _timelineRep;
    private readonly SqlSugarRepository<AdoS8Evidence> _evidenceRep;
    private readonly SqlSugarRepository<AdoS8SceneConfig> _sceneRep;
    private readonly SqlSugarRepository<AdoS0DepartmentMaster> _deptRep;
    private readonly SqlSugarRepository<AdoS0LineMaster> _lineRep;
    private readonly SqlSugarRepository<AdoS8ExceptionType> _typeRep;
    private readonly SqlSugarRepository<AdoS0EmployeeMaster> _empRep;
    // S8-AUTO-WATCH-DEPT-RESOLVE-1（P2）：自动建单部门 resolver 需读取 watch_rule.params_json 里的默认部门字段。
    private readonly SqlSugarRepository<AdoS8WatchRule> _ruleRep;
    private readonly UserManager _userManager;
    private readonly FlowEngineService _flowEngine;
    private readonly ILogger<S8ManualReportService> _logger;

    public S8ManualReportService(
        SqlSugarRepository<AdoS8Exception> rep,
        SqlSugarRepository<AdoS8ExceptionTimeline> timelineRep,
        SqlSugarRepository<AdoS8Evidence> evidenceRep,
        SqlSugarRepository<AdoS8SceneConfig> sceneRep,
        SqlSugarRepository<AdoS0DepartmentMaster> deptRep,
        SqlSugarRepository<AdoS0LineMaster> lineRep,
        SqlSugarRepository<AdoS8ExceptionType> typeRep,
        SqlSugarRepository<AdoS0EmployeeMaster> empRep,
        SqlSugarRepository<AdoS8WatchRule> ruleRep,
        UserManager userManager,
        FlowEngineService flowEngine,
        ILogger<S8ManualReportService> logger)
    {
        _rep = rep;
        _timelineRep = timelineRep;
        _evidenceRep = evidenceRep;
        _sceneRep = sceneRep;
        _deptRep = deptRep;
        _lineRep = lineRep;
        _typeRep = typeRep;
        _empRep = empRep;
        _ruleRep = ruleRep;
        _userManager = userManager;
        _flowEngine = flowEngine;
        _logger = logger;
    }

    // S8-SLA-TIMEOUT-RUNTIME-1（P3）：按 exception_type.sla_minutes 计算 sla_deadline。
    // typeCode 空 / type 缺失 / sla_minutes <= 0 → 返回 null（不阻断建单，仅 LogWarning）。
    // 不写 timeout_flag；timeout_flag 已降级为 legacy 字段，当前超时由读端基于 sla_deadline + status 在线计算。
    private async Task<DateTime?> ResolveSlaDeadlineAsync(string? exceptionTypeCode, DateTime createdAt)
    {
        if (string.IsNullOrWhiteSpace(exceptionTypeCode)) return null;
        var slaMinutes = await _typeRep.AsQueryable().ClearFilter()
            .Where(t => t.TypeCode == exceptionTypeCode)
            .OrderByDescending(t => t.FactoryId)
            .Select(t => (int?)t.SlaMinutes)
            .FirstAsync();
        if (slaMinutes == null)
        {
            _logger.LogWarning("s8_sla_type_not_found exceptionTypeCode={TypeCode}", exceptionTypeCode);
            return null;
        }
        if (slaMinutes.Value <= 0) return null;
        return createdAt.AddMinutes(slaMinutes.Value);
    }

    // S8-AUTO-WATCH-DEPT-RESOLVE-1（P2）：自动建单部门解析顺序 hit → watch_rule.params_json default → 未归属。
    // 单字段独立解析（occurrence / responsible 各自走优先级）。任一字段最终为 null → 调用方按"throw 让 scheduler 跳过"处理。
    // 不允许写 0 作为最终值；不硬编码 1=质量部 / 2=生产部；不猜测业务对象部门派生（待后续增强）。
    // 协议常量：未归属部门 codename = D-UNASSIGNED；按 factory_ref_id 唯一存在；本批不创建该基线，缺失时 resolver 返回 null。
    private const string UnassignedDepartmentCode = "D-UNASSIGNED";

    private sealed class AutoWatchDeptResolution
    {
        public long? OccurrenceDeptId { get; set; }
        public long? ResponsibleDeptId { get; set; }
        public string OccurrenceSource { get; set; } = "failed";
        public string ResponsibleSource { get; set; } = "failed";
    }

    private async Task<AutoWatchDeptResolution> ResolveAutoWatchDepartmentsAsync(
        string path,
        long factoryId,
        long? hitOccurrenceDeptId,
        long? hitResponsibleDeptId,
        long? ruleId,
        string? ruleCode,
        string? moduleCode,
        string? sceneCode,
        string? exceptionTypeCode,
        string? sourceObjectType,
        string? sourceObjectId,
        string? relatedObjectCode,
        string? dedupKey)
    {
        var result = new AutoWatchDeptResolution();

        // 1) hit dept 优先
        var occOk = await ValidateDeptForFactoryAsync(hitOccurrenceDeptId, factoryId);
        var respOk = await ValidateDeptForFactoryAsync(hitResponsibleDeptId, factoryId);
        if (occOk) { result.OccurrenceDeptId = hitOccurrenceDeptId; result.OccurrenceSource = "hit"; }
        if (respOk) { result.ResponsibleDeptId = hitResponsibleDeptId; result.ResponsibleSource = "hit"; }

        // 2) watch_rule.params_json 默认部门
        if ((!occOk || !respOk) && ruleId.HasValue && ruleId.Value > 0)
        {
            var paramsJson = await _ruleRep.AsQueryable()
                .Where(x => x.Id == ruleId.Value)
                .Select(x => x.ParamsJson)
                .FirstAsync();
            var (paramsOcc, paramsResp) = ParseParamsDefaultDepts(paramsJson);
            if (!occOk && paramsOcc.HasValue)
            {
                if (await ValidateDeptForFactoryAsync(paramsOcc, factoryId))
                {
                    result.OccurrenceDeptId = paramsOcc;
                    result.OccurrenceSource = "watch_rule_params";
                }
                else
                {
                    _logger.LogWarning(
                        "s8_auto_watch_default_dept_invalid path={Path} ruleId={RuleId} ruleCode={RuleCode} field=defaultOccurrenceDeptId value={Value} factoryId={FactoryId}",
                        path, ruleId, ruleCode, paramsOcc, factoryId);
                }
            }
            if (!respOk && paramsResp.HasValue)
            {
                if (await ValidateDeptForFactoryAsync(paramsResp, factoryId))
                {
                    result.ResponsibleDeptId = paramsResp;
                    result.ResponsibleSource = "watch_rule_params";
                }
                else
                {
                    _logger.LogWarning(
                        "s8_auto_watch_default_dept_invalid path={Path} ruleId={RuleId} ruleCode={RuleCode} field=defaultResponsibleDeptId value={Value} factoryId={FactoryId}",
                        path, ruleId, ruleCode, paramsResp, factoryId);
                }
            }
        }

        // 3) 未归属部门 fallback
        long? unassignedId = null;
        if (result.OccurrenceDeptId == null || result.ResponsibleDeptId == null)
        {
            unassignedId = await _deptRep.AsQueryable().ClearFilter()
                .Where(x => x.Department == UnassignedDepartmentCode && x.FactoryRefId == factoryId && x.IsActive)
                .Select(x => (long?)x.Id)
                .FirstAsync();
            if (result.OccurrenceDeptId == null && unassignedId.HasValue)
            {
                result.OccurrenceDeptId = unassignedId;
                result.OccurrenceSource = "unassigned";
                _logger.LogWarning(
                    "s8_auto_watch_dept_unassigned_fallback path={Path} ruleId={RuleId} ruleCode={RuleCode} field=occurrence factoryId={FactoryId} unassignedDeptId={UnassignedId} sourceObjectType={SourceObjectType} sourceObjectId={SourceObjectId} relatedObjectCode={RelatedObjectCode} dedupKey={DedupKey}",
                    path, ruleId, ruleCode, factoryId, unassignedId, sourceObjectType, sourceObjectId, relatedObjectCode, dedupKey);
            }
            if (result.ResponsibleDeptId == null && unassignedId.HasValue)
            {
                result.ResponsibleDeptId = unassignedId;
                result.ResponsibleSource = "unassigned";
                _logger.LogWarning(
                    "s8_auto_watch_dept_unassigned_fallback path={Path} ruleId={RuleId} ruleCode={RuleCode} field=responsible factoryId={FactoryId} unassignedDeptId={UnassignedId} sourceObjectType={SourceObjectType} sourceObjectId={SourceObjectId} relatedObjectCode={RelatedObjectCode} dedupKey={DedupKey}",
                    path, ruleId, ruleCode, factoryId, unassignedId, sourceObjectType, sourceObjectId, relatedObjectCode, dedupKey);
            }
        }

        return result;
    }

    private async Task<bool> ValidateDeptForFactoryAsync(long? deptId, long factoryId)
    {
        if (!deptId.HasValue || deptId.Value <= 0 || factoryId <= 0) return false;
        return await _deptRep.AsQueryable().ClearFilter()
            .Where(x => x.Id == deptId.Value && x.FactoryRefId == factoryId && x.IsActive)
            .AnyAsync();
    }

    private static (long? Occurrence, long? Responsible) ParseParamsDefaultDepts(string? paramsJson)
    {
        if (string.IsNullOrWhiteSpace(paramsJson)) return (null, null);
        try
        {
            using var doc = System.Text.Json.JsonDocument.Parse(paramsJson);
            long? occ = ReadJsonLong(doc.RootElement, "defaultOccurrenceDeptId");
            long? resp = ReadJsonLong(doc.RootElement, "defaultResponsibleDeptId");
            return (occ, resp);
        }
        catch (System.Text.Json.JsonException) { return (null, null); }
    }

    private static long? ReadJsonLong(System.Text.Json.JsonElement root, string property)
    {
        if (root.ValueKind != System.Text.Json.JsonValueKind.Object) return null;
        if (!root.TryGetProperty(property, out var el)) return null;
        if (el.ValueKind == System.Text.Json.JsonValueKind.Number && el.TryGetInt64(out var v)) return v;
        if (el.ValueKind == System.Text.Json.JsonValueKind.String && long.TryParse(el.GetString(), out var sv)) return sv;
        return null;
    }

    // S8-REPORTER-IDSPACE-FIX-1（P0-B-1）：把当前登录 SysUser.Id 反查 EmployeeMaster.RecID。
    // 用于 reporter_id idspace 与 assignee_id / verifier_id 对齐。
    // 协议：sys_user_id + factory_ref_id 双键命中；EmployeeMaster.tenant_id 与 SysUser.TenantId 历史错位 →
    // ClearFilter，由 factoryRefId 做硬边界（与 S8MasterDataAdapter / S8TaskFlowService 同口径）。
    // 未绑定时返回 null，调用方负责诊断日志。
    private async Task<long?> ResolveCurrentEmployeeIdAsync(long factoryId, long sysUserId)
    {
        if (sysUserId <= 0 || factoryId <= 0) return null;
        var emp = await _empRep.AsQueryable().ClearFilter()
            .Where(x => x.SysUserId == sysUserId && x.FactoryRefId == factoryId && x.IsActive)
            .Select(x => new { x.Id })
            .FirstAsync();
        return emp?.Id;
    }

    // S8-MANUAL-REPORT-DEFAULT-OCCURRENCE-DEPT-1（P1）：取当前登录员工的业务部门作为默认发生部门。
    // 链路：SysUser.Id → EmployeeMaster.sys_user_id → EmployeeMaster.Department(string)
    //        + EmployeeMaster.FactoryRefId → DepartmentMaster.Department + FactoryRefId → RecID。
    // 不绑定 / 部门为空 / 部门未匹配 / 命中多条：均返回 (null,null) + warning，绝不报错也不阻断页面。
    // 仅作为前端 form 默认初值；用户仍可改，CreateAsync 的 dept=0 guard 不变。
    private async Task<(long? DeptId, string? DeptName)> ResolveCurrentEmployeeDefaultDeptAsync(long factoryId, long sysUserId)
    {
        if (sysUserId <= 0 || factoryId <= 0) return (null, null);
        var emp = await _empRep.AsQueryable().ClearFilter()
            .Where(x => x.SysUserId == sysUserId && x.FactoryRefId == factoryId && x.IsActive)
            .Select(x => new { x.Id, x.Department, x.FactoryRefId })
            .FirstAsync();
        if (emp == null)
        {
            _logger.LogWarning(
                "s8_manual_report_default_dept_unbound_employee sysUserId={SysUserId} factoryId={FactoryId}",
                sysUserId, factoryId);
            return (null, null);
        }
        if (string.IsNullOrWhiteSpace(emp.Department))
        {
            _logger.LogWarning(
                "s8_manual_report_default_dept_employee_dept_empty sysUserId={SysUserId} factoryId={FactoryId} employeeId={EmployeeId}",
                sysUserId, factoryId, emp.Id);
            return (null, null);
        }
        var depts = await _deptRep.AsQueryable().ClearFilter()
            .Where(x => x.Department == emp.Department && x.FactoryRefId == emp.FactoryRefId && x.IsActive)
            .Select(x => new { x.Id, x.Department, x.Descr })
            .Take(2)
            .ToListAsync();
        if (depts.Count == 0)
        {
            _logger.LogWarning(
                "s8_manual_report_default_dept_unmatched sysUserId={SysUserId} factoryId={FactoryId} employeeId={EmployeeId} departmentCode={DeptCode}",
                sysUserId, factoryId, emp.Id, emp.Department);
            return (null, null);
        }
        if (depts.Count > 1)
        {
            _logger.LogWarning(
                "s8_manual_report_default_dept_ambiguous sysUserId={SysUserId} factoryId={FactoryId} employeeId={EmployeeId} departmentCode={DeptCode} matchedCount={Count}",
                sysUserId, factoryId, emp.Id, emp.Department, depts.Count);
            return (null, null);
        }
        var d = depts[0];
        return (d.Id, string.IsNullOrWhiteSpace(d.Descr) ? d.Department : d.Descr);
    }

    /// <summary>
    /// 主动提报推断 ExceptionTypeCode：场景下取启用且 SortNo 最小的一条。
    /// baseline 异常类型当前 tenant_id=0/factory_id=0（全局基线），所以匹配条件为
    /// (tenantId 命中 OR 0) AND (factoryId 命中 OR 0)。ClearFilter 兜底全局多租户过滤器。
    /// 找不到返回 null（保持兼容）。
    /// </summary>
    private async Task<string?> InferExceptionTypeCodeAsync(long tenantId, long factoryId, string sceneCode)
    {
        if (string.IsNullOrWhiteSpace(sceneCode)) return null;
        return await _typeRep.AsQueryable().ClearFilter()
            .Where(x => (x.TenantId == tenantId || x.TenantId == 0)
                     && (x.FactoryId == factoryId || x.FactoryId == 0)
                     && x.SceneCode == sceneCode && x.Enabled)
            .OrderBy(x => x.SortNo)
            .Select(x => x.TypeCode)
            .FirstAsync();
    }

    /// <summary>
    /// TB001 异常提报审批流：自动监控 + 主动提报后软触发，失败仅 warn 日志，不阻断建单。
    /// </summary>
    private async Task TryStartIntakeFlowAsync(AdoS8Exception entity)
    {
        try
        {
            await _flowEngine.StartFlow(new StartFlowInput
            {
                BizType = "EXCEPTION_REPORT",
                BizId = entity.Id,
                BizNo = entity.ExceptionCode,
                Title = $"异常提报 - {entity.ExceptionCode}",
                Comment = entity.SourceType == "AUTO_WATCH" ? "自动监控触发" : "主动提报触发",
                BizData = new Dictionary<string, object>
                {
                    ["sceneCode"] = entity.SceneCode ?? "",
                    ["exceptionTypeCode"] = entity.ExceptionTypeCode ?? "",
                    ["sourceType"] = entity.SourceType ?? ""
                }
            });
        }
        catch (Exception ex)
        {
            _logger.LogWarning(ex, "TB001 异常提报审批流触发失败 ExceptionId={Id} ExceptionCode={Code}", entity.Id, entity.ExceptionCode);
        }
    }

    public async Task<object> GetFormOptionsAsync(long tenantId, long factoryId)
    {
        var scenes = await _sceneRep.AsQueryable()
            .Where(x => x.TenantId == tenantId && x.FactoryId == factoryId && x.Enabled)
            .OrderBy(x => x.SortNo)
            .Select(x => new { value = x.SceneCode, label = x.SceneName })
            .ToListAsync();
        // ClearFilter：DepartmentMaster.tenant_id 属 S0 域租户，不与登录 token TenantId 一致；
        // 用 factory_ref_id 做硬边界，安全等价。同 BUG-S8-EMPLOYEES-TENANT-FILTER 协议。
        var departments = await _deptRep.AsQueryable().ClearFilter()
            .Where(x => x.FactoryRefId == factoryId)
            .OrderBy(x => x.Department)
            .Take(500)
            .Select(x => new { value = x.Id, label = x.Descr ?? x.Department })
            .ToListAsync();
        var lines = await _lineRep.AsQueryable().ClearFilter()
            .Where(x => x.FactoryRefId == factoryId)
            .OrderBy(x => x.Line)
            .Take(500)
            .Select(x => new { value = x.Id, label = x.Describe ?? x.Line })
            .ToListAsync();

        // S8-MANUAL-REPORT-DEFAULT-OCCURRENCE-DEPT-1（P1）：默认发生部门 = 当前登录员工的业务部门。
        // 未登录 / 未绑定 / 部门不可解析 → 返回 null，前端继续要求用户手动选择。
        var sysUserId = _userManager.UserId;
        var (defaultOccDeptId, defaultOccDeptName) = sysUserId > 0
            ? await ResolveCurrentEmployeeDefaultDeptAsync(factoryId, sysUserId)
            : (null, null);

        return new
        {
            scenes,
            // S8-SEVERITY-FOLLOW-SERIOUS-STANDARDIZE-EXEC-1：业务枚举 FOLLOW/SERIOUS 两档。
            severities = S8SeverityCode.Options(),
            departments,
            lines,
            materials = Array.Empty<object>(),
            defaultOccurrenceDeptId = defaultOccDeptId,
            defaultOccurrenceDeptName = defaultOccDeptName,
        };
    }

    public async Task<AdoS8ManualReportResultDto> CreateAsync(AdoS8ManualReportCreateDto dto)
    {
        if (string.IsNullOrWhiteSpace(dto.Title)) throw new S8BizException("标题必填");
        if (string.IsNullOrWhiteSpace(dto.SceneCode)) throw new S8BizException("场景必填");
        // S8-MANUAL-REPORT-DEPT-ZERO-GUARD-1（P0-B-3）：人工提报禁止 dept=0 入库。
        // 字段类型 long（非空），未填默认 0；guard 命中 <=0 直接拒绝，绝不转 null/默认部门/未归属。
        // 范围仅限本入口；自动建单（CreateFromWatchAsync/CreateFromHitAsync）的 ?? 0 风险归 P0-B-4。
        if (dto.OccurrenceDeptId <= 0) throw new S8BizException("发生部门不能为空，请选择有效发生部门");
        if (dto.ResponsibleDeptId <= 0) throw new S8BizException("处理部门不能为空，请选择有效处理部门");

        // S8-SEVERITY-FOLLOW-SERIOUS-STANDARDIZE-EXEC-1：白名单接受新值（FOLLOW/SERIOUS）+ 旧值兼容；
        // 通过 Normalize 写入 DB 一律为 FOLLOW/SERIOUS。
        var rawSeverity = string.IsNullOrWhiteSpace(dto.Severity) ? S8SeverityCode.Follow : dto.Severity.Trim();
        if (!AllowedSeverities.Contains(rawSeverity))
            throw new S8BizException($"严重度 {rawSeverity} 非法，仅允许 FOLLOW/SERIOUS");
        var severity = S8SeverityCode.Normalize(rawSeverity);

        // 提报人以服务端登录上下文为准，忽略前端传入；未登录上下文落 null。
        // currentUserId 仍是 SysUser.Id，仅用作 timeline.OperatorId（与 S8TaskFlowService 同口径）；
        // S8-REPORTER-IDSPACE-FIX-1：ReporterId 写入改用 EmployeeMaster.RecID（与 assignee/verifier 同 idspace）。
        var currentUserId = _userManager.UserId > 0 ? _userManager.UserId : (long?)null;
        long? currentEmployeeId = null;
        if (currentUserId.HasValue)
        {
            currentEmployeeId = await ResolveCurrentEmployeeIdAsync(dto.FactoryId, currentUserId.Value);
            if (currentEmployeeId == null)
            {
                _logger.LogWarning(
                    "manual_report_reporter_unbound sysUserId={SysUserId} factoryId={FactoryId} title={Title}",
                    currentUserId.Value, dto.FactoryId, dto.Title);
            }
        }

        // 主动提报无前端 type 字段，按场景兜底推断；保证不进"未分类"桶。
        var inferredType = await InferExceptionTypeCodeAsync(dto.TenantId, dto.FactoryId, dto.SceneCode.Trim());

        // S8-EXCEPTION-CREATION-MODULE-CODE-FIX-1：手工提报 module_code 严格按 S1-S7 派生；
        // dto 暂不携带显式 module_code，按 scene → exception_type.scene 链路降级。
        var resolvedModule = await ResolveModuleCodeAsync(
            explicitModuleCode: null,
            hitModuleCode: null,
            sceneCode: dto.SceneCode.Trim(),
            exceptionTypeCode: inferredType);
        if (resolvedModule == null)
        {
            _logger.LogWarning(
                "manual_report_module_code_unresolved sceneCode={SceneCode} exceptionTypeCode={TypeCode} title={Title}",
                dto.SceneCode, inferredType, dto.Title);
        }

        // S8-SLA-TIMEOUT-RUNTIME-1（P3）：CreatedAt 与 SlaDeadline 共用同一 now，避免漂移。
        var now = DateTime.Now;
        var slaDeadline = await ResolveSlaDeadlineAsync(inferredType, now);
        var code = $"EX-{now:yyyyMMdd}-{Guid.NewGuid().ToString("N")[..8].ToUpperInvariant()}";
        var entity = new AdoS8Exception
        {
            TenantId = dto.TenantId,
            FactoryId = dto.FactoryId,
            ExceptionCode = code,
            Title = dto.Title.Trim(),
            Description = dto.Description,
            SceneCode = dto.SceneCode.Trim(),
            SourceType = "MANUAL",
            Status = "NEW",
            Severity = severity,
            PriorityScore = 0,
            PriorityLevel = "P3",
            OccurrenceDeptId = dto.OccurrenceDeptId,
            ResponsibleDeptId = dto.ResponsibleDeptId,
            // S8-REPORTER-IDSPACE-FIX-1：reporter_id idspace = EmployeeMaster.RecID（与 assignee/verifier 同）。
            ReporterId = currentEmployeeId,
            ExceptionTypeCode = inferredType,
            ModuleCode = resolvedModule,
            // S8-PROCESS-NODE-MODULE-CODE-ALIGNMENT-EXEC-1：当前阶段 process_node_code 留空，
            // module_code 承担 S1-S7 主流程归属；process_node_code 留给未来更细流程节点。
            ProcessNodeCode = null,
            CreatedAt = now,
            // S8-SLA-TIMEOUT-RUNTIME-1：sla_deadline 由 exception_type.sla_minutes 决定；缺配置 → null。
            SlaDeadline = slaDeadline,
            IsDeleted = false
        };

        await _rep.AsTenant().UseTranAsync(async () =>
        {
            entity = await _rep.AsInsertable(entity).ExecuteReturnEntityAsync();
            await _timelineRep.InsertAsync(new AdoS8ExceptionTimeline
            {
                ExceptionId = entity.Id,
                ActionCode = "CREATE",
                ActionLabel = "创建",
                FromStatus = null,
                ToStatus = "NEW",
                OperatorId = currentUserId,
                ActionRemark = "主动提报",
                CreatedAt = DateTime.Now
            });
        }, ex => throw ex);

        await TryStartIntakeFlowAsync(entity);

        return new AdoS8ManualReportResultDto
        {
            ExceptionId = entity.Id,
            ExceptionCode = entity.ExceptionCode,
            TaskId = entity.Id
        };
    }

    /// <summary>
    /// G01-06：自动建单分支（非第二套创建主链）。
    /// 这是本服务内的自动监控建单路径，与 <see cref="CreateAsync"/> 并列，
    /// 复用同一仓储（_rep / _timelineRep）、同一事务边界、同一 ExceptionCode 生成规则、
    /// 同一时间线主链（ActionCode="CREATE"、ToStatus="NEW"）；仅差异点：
    ///  - SourceType 标识为自动监控来源
    ///  - 填入 SourceRuleId / SourceDataSourceId / SourcePayload / RelatedObjectCode 追溯
    ///  - ExceptionTypeCode 固定 EQUIP_FAULT（G-01 首版唯一映射）
    ///  - SceneCode 固定 S2（G-01 首版唯一场景，迁移后从 S2S6_PRODUCTION 切到单模块 S2）
    /// 不做补偿、重试、对账；失败由调用方接住。
    /// </summary>
    public async Task<AdoS8Exception> CreateFromWatchAsync(S8WatchHitResult hit)
    {
        if (hit.SourceRuleId <= 0 || string.IsNullOrWhiteSpace(hit.RelatedObjectCode))
            throw new S8BizException("自动建单缺失追溯键");

        // S8-SLA-TIMEOUT-RUNTIME-1（P3）：CreatedAt 与 SlaDeadline 共用同一 now。
        var now = DateTime.Now;
        var code = $"EX-{now:yyyyMMdd}-{Guid.NewGuid().ToString("N")[..8].ToUpperInvariant()}";
        var title = $"[自动] 设备 {hit.RelatedObjectCode} {hit.TriggerCondition} {hit.ThresholdValue}（当前 {hit.CurrentValue}）";
        // S8-EXCEPTION-CREATION-MODULE-CODE-FIX-1：固定 SceneCode=S2 + ExceptionTypeCode=EQUIP_FAULT，
        // 派生链路通过 ResolveModuleCodeAsync 严格按 S1-S7 走（结果稳定为 S2，但消除 FromScene 的 legacy 兼容路径）。
        var resolvedModule = await ResolveModuleCodeAsync(
            explicitModuleCode: null,
            hitModuleCode: null,
            sceneCode: S8SceneCode.S2,
            exceptionTypeCode: "EQUIP_FAULT");
        if (resolvedModule == null)
        {
            _logger.LogWarning(
                "auto_watch_module_code_unresolved sceneCode={SceneCode} exceptionTypeCode={TypeCode} ruleId={RuleId}",
                S8SceneCode.S2, "EQUIP_FAULT", hit.SourceRuleId);
        }
        // S8-AUTO-WATCH-DEPT-RESOLVE-1（P2）：部门解析顺序 hit → params → unassigned；resolver 失败 → throw。
        const long fixedTenantId = 1;
        const long fixedFactoryId = 1;
        var deptResolution = await ResolveAutoWatchDepartmentsAsync(
            path: nameof(CreateFromWatchAsync),
            factoryId: fixedFactoryId,
            hitOccurrenceDeptId: hit.OccurrenceDeptId,
            hitResponsibleDeptId: hit.ResponsibleDeptId,
            ruleId: hit.SourceRuleId,
            ruleCode: hit.SourceRuleCode,
            moduleCode: resolvedModule,
            sceneCode: S8SceneCode.S2,
            exceptionTypeCode: "EQUIP_FAULT",
            sourceObjectType: null,
            sourceObjectId: null,
            relatedObjectCode: hit.RelatedObjectCode,
            dedupKey: null);
        if (!deptResolution.OccurrenceDeptId.HasValue || !deptResolution.ResponsibleDeptId.HasValue)
        {
            _logger.LogWarning(
                "s8_auto_watch_dept_resolve_failed path={Path} ruleId={RuleId} ruleCode={RuleCode} factoryId={FactoryId} occSource={OccSource} respSource={RespSource} relatedObjectCode={RelatedObjectCode}",
                nameof(CreateFromWatchAsync), hit.SourceRuleId, hit.SourceRuleCode, fixedFactoryId,
                deptResolution.OccurrenceSource, deptResolution.ResponsibleSource, hit.RelatedObjectCode);
            throw new S8BizException($"自动建单部门解析失败：缺少未归属部门基线（factory_ref_id={fixedFactoryId}, codename={UnassignedDepartmentCode}）");
        }

        var entity = new AdoS8Exception
        {
            // 租户/工厂：与 S8WatchSchedulerService.RunOnceAsync 当前固定上下文一致。
            TenantId = fixedTenantId,
            FactoryId = fixedFactoryId,
            ExceptionCode = code,
            Title = title,
            Description = null,
            SceneCode = S8SceneCode.S2,
            // 首版自动监控建单来源标识（字符串值，先不抽常量类）。
            SourceType = "AUTO_WATCH",
            Status = "NEW",
            Severity = S8SeverityCode.Normalize(hit.Severity),
            PriorityScore = 0,
            PriorityLevel = "P3",
            // S8-AUTO-WATCH-DEPT-RESOLVE-1：经 resolver 严格校验后写入；不再使用 ?? 0 兜底。
            OccurrenceDeptId = deptResolution.OccurrenceDeptId.Value,
            ResponsibleDeptId = deptResolution.ResponsibleDeptId.Value,
            ReporterId = null,
            CreatedAt = now,
            // S8-SLA-TIMEOUT-RUNTIME-1：sla_deadline 由 exception_type.sla_minutes 决定（EQUIP_FAULT）。
            SlaDeadline = await ResolveSlaDeadlineAsync("EQUIP_FAULT", now),
            IsDeleted = false,
            // G-01 首版唯一异常类型映射（baseline 已迁后 EQUIP_FAULT 属 S2 制造协同场景）。
            ExceptionTypeCode = "EQUIP_FAULT",
            ModuleCode = resolvedModule,
            // S8-PROCESS-NODE-MODULE-CODE-ALIGNMENT-EXEC-1：当前阶段 process_node_code 留空，
            // module_code 承担 S1-S7 主流程归属；process_node_code 留给未来更细流程节点。
            ProcessNodeCode = null,
            // 追溯三件套（自动建单必填口径）。
            SourceRuleId = hit.SourceRuleId,
            SourceDataSourceId = hit.DataSourceId,
            SourcePayload = hit.SourcePayload,
            RelatedObjectCode = hit.RelatedObjectCode
        };

        _logger.LogInformation(
            "s8_auto_watch_dept_resolved path={Path} ruleId={RuleId} ruleCode={RuleCode} factoryId={FactoryId} occDeptId={OccDeptId} occSource={OccSource} respDeptId={RespDeptId} respSource={RespSource}",
            nameof(CreateFromWatchAsync), hit.SourceRuleId, hit.SourceRuleCode, fixedFactoryId,
            entity.OccurrenceDeptId, deptResolution.OccurrenceSource, entity.ResponsibleDeptId, deptResolution.ResponsibleSource);

        await _rep.AsTenant().UseTranAsync(async () =>
        {
            entity = await _rep.AsInsertable(entity).ExecuteReturnEntityAsync();
            await _timelineRep.InsertAsync(new AdoS8ExceptionTimeline
            {
                ExceptionId = entity.Id,
                ActionCode = "CREATE",
                ActionLabel = "创建",
                FromStatus = null,
                ToStatus = "NEW",
                OperatorId = null,
                ActionRemark = "自动建单",
                CreatedAt = DateTime.Now
            });
        }, ex => throw ex);

        await TryStartIntakeFlowAsync(entity);

        return entity;
    }

    /// <summary>
    /// R2 自动建单分支（TIMEOUT 等新 evaluator 走此路径）。
    /// 与 <see cref="CreateFromWatchAsync"/> 并列：复用同一仓储 / 事务 / 时间线 ActionCode；
    /// 差异点：消费 <see cref="S8RuleHit"/> 一份命中模型，把 R2 新列（DedupKey / LastDetectedAt /
    /// SourceRuleCode / SourceObjectType / SourceObjectId）落齐；ExceptionTypeCode 由 hit 自带，
    /// 不再硬编码 EQUIP_FAULT。RecoveredAt 本轮不写。
    /// 调用方负责前置检查 ExceptionTypeCode 是否在 baseline；本方法不再二次校验。
    /// </summary>
    public async Task<AdoS8Exception> CreateFromHitAsync(S8RuleHit hit)
    {
        if (hit.SourceRuleId <= 0 || string.IsNullOrWhiteSpace(hit.RelatedObjectCode))
            throw new S8BizException("自动建单缺失追溯键");

        var effectiveScene = string.IsNullOrWhiteSpace(hit.SceneCode) ? S8SceneCode.S2 : hit.SceneCode;
        // S8-EXCEPTION-CREATION-MODULE-CODE-FIX-1：R2 自动建单 module_code 派生统一走严格 S1-S7 链路；
        // hit.ModuleCode（evaluator 显式）→ rule/hit.SceneCode（当前 DB 100% S1-S7）→ exception_type.scene_code。
        var resolvedModule = await ResolveModuleCodeAsync(
            explicitModuleCode: null,
            hitModuleCode: hit.ModuleCode,
            sceneCode: effectiveScene,
            exceptionTypeCode: hit.ExceptionTypeCode);
        if (resolvedModule == null)
        {
            _logger.LogWarning(
                "auto_watch_hit_module_code_unresolved sceneCode={SceneCode} hitModule={HitModule} typeCode={TypeCode} ruleCode={RuleCode}",
                hit.SceneCode, hit.ModuleCode, hit.ExceptionTypeCode, hit.SourceRuleCode);
        }

        // S8-AUTO-WATCH-DEPT-RESOLVE-1（P2）：部门解析顺序 hit → params → unassigned；resolver 失败 → throw。
        const long fixedTenantId = 1;
        const long fixedFactoryId = 1;
        var deptResolution = await ResolveAutoWatchDepartmentsAsync(
            path: nameof(CreateFromHitAsync),
            factoryId: fixedFactoryId,
            hitOccurrenceDeptId: hit.OccurrenceDeptId,
            hitResponsibleDeptId: hit.ResponsibleDeptId,
            ruleId: hit.SourceRuleId,
            ruleCode: hit.SourceRuleCode,
            moduleCode: resolvedModule,
            sceneCode: effectiveScene,
            exceptionTypeCode: hit.ExceptionTypeCode,
            sourceObjectType: hit.SourceObjectType,
            sourceObjectId: hit.SourceObjectId,
            relatedObjectCode: hit.RelatedObjectCode,
            dedupKey: hit.DedupKey);
        if (!deptResolution.OccurrenceDeptId.HasValue || !deptResolution.ResponsibleDeptId.HasValue)
        {
            _logger.LogWarning(
                "s8_auto_watch_dept_resolve_failed path={Path} ruleId={RuleId} ruleCode={RuleCode} factoryId={FactoryId} occSource={OccSource} respSource={RespSource} sourceObjectType={SourceObjectType} sourceObjectId={SourceObjectId} dedupKey={DedupKey}",
                nameof(CreateFromHitAsync), hit.SourceRuleId, hit.SourceRuleCode, fixedFactoryId,
                deptResolution.OccurrenceSource, deptResolution.ResponsibleSource, hit.SourceObjectType, hit.SourceObjectId, hit.DedupKey);
            throw new S8BizException($"自动建单部门解析失败：缺少未归属部门基线（factory_ref_id={fixedFactoryId}, codename={UnassignedDepartmentCode}）");
        }

        // S8-SLA-TIMEOUT-RUNTIME-1（P3）：CreatedAt 与 SlaDeadline 共用同一 now。
        var now = DateTime.Now;
        var code = $"EX-{now:yyyyMMdd}-{Guid.NewGuid().ToString("N")[..8].ToUpperInvariant()}";
        var slaDeadline = await ResolveSlaDeadlineAsync(hit.ExceptionTypeCode, now);
        var entity = new AdoS8Exception
        {
            // 与 CreateFromWatchAsync 当前固定上下文一致；R2 不变更租户/工厂上下文语义。
            TenantId = fixedTenantId,
            FactoryId = fixedFactoryId,
            ExceptionCode = code,
            Title = string.IsNullOrWhiteSpace(hit.Title)
                ? $"[自动] {hit.SourceObjectType} {hit.SourceObjectId}"
                : hit.Title,
            Description = null,
            SceneCode = effectiveScene,
            SourceType = "AUTO_WATCH",
            Status = "NEW",
            Severity = S8SeverityCode.Normalize(hit.Severity),
            PriorityScore = 0,
            PriorityLevel = "P3",
            // S8-AUTO-WATCH-DEPT-RESOLVE-1：经 resolver 严格校验后写入；不再使用 ?? 0 兜底。
            OccurrenceDeptId = deptResolution.OccurrenceDeptId.Value,
            ResponsibleDeptId = deptResolution.ResponsibleDeptId.Value,
            ReporterId = null,
            CreatedAt = now,
            // S8-SLA-TIMEOUT-RUNTIME-1：sla_deadline 来自 hit.ExceptionTypeCode 对应 sla_minutes。
            SlaDeadline = slaDeadline,
            IsDeleted = false,
            ExceptionTypeCode = hit.ExceptionTypeCode,
            ModuleCode = resolvedModule,
            // S8-PROCESS-NODE-MODULE-CODE-ALIGNMENT-EXEC-1：当前阶段 process_node_code 留空，
            // module_code 承担 S1-S7 主流程归属；process_node_code 留给未来更细流程节点。
            ProcessNodeCode = null,
            SourceRuleId = hit.SourceRuleId,
            SourceDataSourceId = hit.DataSourceId == 0 ? null : hit.DataSourceId,
            SourcePayload = hit.SourcePayload,
            RelatedObjectCode = hit.RelatedObjectCode,
            // R2 新列回填
            DedupKey = hit.DedupKey,
            LastDetectedAt = hit.DetectedAt,
            RecoveredAt = null,
            SourceRuleCode = hit.SourceRuleCode,
            SourceObjectType = hit.SourceObjectType,
            SourceObjectId = hit.SourceObjectId
        };

        _logger.LogInformation(
            "s8_auto_watch_dept_resolved path={Path} ruleId={RuleId} ruleCode={RuleCode} factoryId={FactoryId} occDeptId={OccDeptId} occSource={OccSource} respDeptId={RespDeptId} respSource={RespSource} sourceObjectType={SourceObjectType} sourceObjectId={SourceObjectId} dedupKey={DedupKey}",
            nameof(CreateFromHitAsync), hit.SourceRuleId, hit.SourceRuleCode, fixedFactoryId,
            entity.OccurrenceDeptId, deptResolution.OccurrenceSource, entity.ResponsibleDeptId, deptResolution.ResponsibleSource, hit.SourceObjectType, hit.SourceObjectId, hit.DedupKey);

        await _rep.AsTenant().UseTranAsync(async () =>
        {
            entity = await _rep.AsInsertable(entity).ExecuteReturnEntityAsync();
            await _timelineRep.InsertAsync(new AdoS8ExceptionTimeline
            {
                ExceptionId = entity.Id,
                ActionCode = "CREATE",
                ActionLabel = "创建",
                FromStatus = null,
                ToStatus = "NEW",
                OperatorId = null,
                ActionRemark = "自动建单(R2)",
                CreatedAt = DateTime.Now
            });
        }, ex => throw ex);

        await TryStartIntakeFlowAsync(entity);

        return entity;
    }

    public async Task<AdoS8Exception?> GetAsync(long id) =>
        await _rep.GetByIdAsync(id);

    public async Task<AdoS8Evidence> AddAttachmentAsync(long id, AdoS8AttachmentCreateDto dto)
    {
        var entity = await _rep.GetFirstAsync(x => x.Id == id && !x.IsDeleted)
            ?? throw new S8BizException("异常不存在");
        if (string.IsNullOrWhiteSpace(dto.FileName) || string.IsNullOrWhiteSpace(dto.FileUrl))
            throw new S8BizException("附件名称和地址必填");

        var evidence = new AdoS8Evidence
        {
            ExceptionId = id,
            EvidenceType = string.IsNullOrWhiteSpace(dto.EvidenceType) ? "file" : dto.EvidenceType,
            FileName = dto.FileName.Trim(),
            FileUrl = dto.FileUrl.Trim(),
            SourceSystem = dto.SourceSystem,
            UploadedBy = dto.UploadedBy,
            UploadedAt = DateTime.Now,
            IsDeleted = false
        };
        await _evidenceRep.InsertAsync(evidence);
        return evidence;
    }
}