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
{
    // 合法严重度白名单（与 GetFormOptionsAsync.severities 同源）；前端/后端默认值 MEDIUM。
    private static readonly HashSet<string> AllowedSeverities = new(StringComparer.Ordinal)
    {
        "CRITICAL", "HIGH", "MEDIUM", "LOW"
    };

    // 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。
    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 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,
        UserManager userManager,
        FlowEngineService flowEngine,
        ILogger<S8ManualReportService> logger)
    {
        _rep = rep;
        _timelineRep = timelineRep;
        _evidenceRep = evidenceRep;
        _sceneRep = sceneRep;
        _deptRep = deptRep;
        _lineRep = lineRep;
        _typeRep = typeRep;
        _userManager = userManager;
        _flowEngine = flowEngine;
        _logger = logger;
    }

    /// <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();

        return new
        {
            scenes,
            severities = new[]
            {
                new { value = "CRITICAL", label = "紧急" },
                new { value = "HIGH", label = "高" },
                new { value = "MEDIUM", label = "中" },
                new { value = "LOW", label = "低" }
            },
            departments,
            lines,
            materials = Array.Empty<object>()
        };
    }

    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");

        // 严重度白名单校验：空值兜底为 MEDIUM；非法值直接拒绝，避免 P3 等错位写入。
        var severity = string.IsNullOrWhiteSpace(dto.Severity) ? "MEDIUM" : dto.Severity.Trim();
        if (!AllowedSeverities.Contains(severity))
            throw new S8BizException($"严重度 {severity} 非法，仅允许 CRITICAL/HIGH/MEDIUM/LOW");

        // 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。
        var currentUserId = _userManager.UserId > 0 ? _userManager.UserId : (long?)null;

        // 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);
        }

        var code = $"EX-{DateTime.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,
            ReporterId = currentUserId,
            ExceptionTypeCode = inferredType,
            ModuleCode = resolvedModule,
            ProcessNodeCode = ResolveProcessNodeCode(dto.SceneCode.Trim(), resolvedModule),
            CreatedAt = DateTime.Now,
            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");

        var code = $"EX-{DateTime.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);
        }
        var entity = new AdoS8Exception
        {
            // 租户/工厂：与 S8WatchSchedulerService.RunOnceAsync 当前固定上下文一致。
            TenantId = 1,
            FactoryId = 1,
            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 = string.IsNullOrWhiteSpace(hit.Severity) ? "MEDIUM" : hit.Severity,
            PriorityScore = 0,
            PriorityLevel = "P3",
            // 首版兜底口径：Hit 未提供部门时置 0 仅为保证“能建成标准异常单并进入主链”，
            // 不是最终业务部门语义；后续需由上游查询结果提供，或在专项任务中补口径。
            OccurrenceDeptId = hit.OccurrenceDeptId ?? 0,
            ResponsibleDeptId = hit.ResponsibleDeptId ?? 0,
            ReporterId = null,
            CreatedAt = DateTime.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-S1S7-ALIGN-1：process_node_code 与 module 对齐 S1-S7。
            ProcessNodeCode = ResolveProcessNodeCode(S8SceneCode.S2, resolvedModule),
            // 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
        };

        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);
        }

        var code = $"EX-{DateTime.Now:yyyyMMdd}-{Guid.NewGuid().ToString("N")[..8].ToUpperInvariant()}";
        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 = 1,
            FactoryId = 1,
            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 = string.IsNullOrWhiteSpace(hit.Severity) ? "MEDIUM" : hit.Severity,
            PriorityScore = 0,
            PriorityLevel = "P3",
            OccurrenceDeptId = hit.OccurrenceDeptId ?? 0,
            ResponsibleDeptId = hit.ResponsibleDeptId ?? 0,
            ReporterId = null,
            CreatedAt = DateTime.Now,
            IsDeleted = false,
            ExceptionTypeCode = hit.ExceptionTypeCode,
            ModuleCode = resolvedModule,
            // S8-PROCESS-NODE-S1S7-ALIGN-1：process_node_code 与 module 对齐 S1-S7。
            ProcessNodeCode = ResolveProcessNodeCode(effectiveScene, resolvedModule),
            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
        };

        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;
    }
}