namespace Admin.NET.Plugin.AiDOP.Order;

/// <summary>
/// 数据中台统一 MDP 运行监控。
/// </summary>
[ApiDescriptionSettings(Order = 322, Description = "统一MDP运行监控")]
[Route("api/DataPlatform")]
[AllowAnonymous]
[NonUnify]
public class MdpMonitorService : IDynamicApiController, ITransient
{
    private static readonly Dictionary<string, string> ModuleJobCodes = new(StringComparer.OrdinalIgnoreCase)
    {
        ["S1"] = "S1_MDP_SYNC_TRANSFORM",
        ["S2"] = "S2_MDP_SYNC_TRANSFORM",
        ["S3"] = "S3_MDP_SYNC_TRANSFORM",
        ["S4"] = "S4_MDP_SYNC_TRANSFORM"
    };

    private static readonly Dictionary<string, MdpJobCatalogItem> JobCatalog = new(StringComparer.OrdinalIgnoreCase)
    {
        ["S1_MDP_SYNC_TRANSFORM"] = new(
            "S1_MDP_SYNC_TRANSFORM",
            "order_delivery",
            "订单交付域",
            ["S1", "S2", "S3", "S4", "S7", "S9"],
            "GLOBAL_DOMAIN",
            "订单交付域 MDP 同步",
            "job_s1_mdp_sync_transform"),
        ["S2_MDP_SYNC_TRANSFORM"] = new(
            "S2_MDP_SYNC_TRANSFORM",
            "work_schedule",
            "工单排程域",
            ["S2", "S3", "S5", "S6", "S8", "S9"],
            "GLOBAL_DOMAIN",
            "工单排程域 MDP 同步",
            "job_s2_mdp_sync_transform"),
        ["S3_MDP_SYNC_TRANSFORM"] = new(
            "S3_MDP_SYNC_TRANSFORM",
            "supply_purchase",
            "供应采购域",
            ["S3", "S4", "S5", "S8", "S9"],
            "GLOBAL_DOMAIN",
            "供应采购域 MDP 同步",
            "job_s3_mdp_sync_transform"),
        ["S4_MDP_SYNC_TRANSFORM"] = new(
            "S4_MDP_SYNC_TRANSFORM",
            "purchase_execution",
            "采购执行域",
            ["S4", "S5", "S8", "S9"],
            "GLOBAL_DOMAIN",
            "采购执行域 MDP 同步",
            "job_s4_mdp_sync_transform")
    };

    private readonly ISqlSugarClient _db;
    private readonly UserManager _userManager;

    public MdpMonitorService(ISqlSugarClient db, UserManager userManager)
    {
        _db = db;
        _userManager = userManager;
    }

    [DisplayName("MDP模块选项")]
    [HttpGet("mdp-monitor/modules")]
    public object GetModules() => BuildCatalogResponse();

    [DisplayName("MDP任务目录")]
    [HttpGet("mdp-monitor/catalog")]
    public object GetCatalog() => BuildCatalogResponse();

    [DisplayName("MDP最近运行状态")]
    [HttpGet("mdp-monitor/latest")]
    public async Task<object> GetLatest([FromQuery] MdpMonitorQueryInput input)
    {
        var tenantId = _userManager.TenantId;
        var (whereSql, pars) = BuildWhere(input, tenantId);
        var row = await _db.Ado.SqlQuerySingleAsync<MdpMonitorRunLogRow>(
            $"""
            {SelectColumnsSql()}
            FROM mdp_transform_run_log
            WHERE {whereSql}
            ORDER BY start_time DESC, id DESC
            LIMIT 1
            """,
            pars)
            ?? new MdpMonitorRunLogRow();
        AttachCatalogInfo(row);
        return row;
    }

    [DisplayName("MDP运行日志列表")]
    [HttpGet("mdp-monitor/list")]
    public async Task<object> GetList([FromQuery] MdpMonitorListInput input)
    {
        var tenantId = _userManager.TenantId;
        var page = input.Page <= 0 ? 1 : input.Page;
        var pageSize = input.PageSize <= 0 ? 10 : input.PageSize;
        var offset = (page - 1) * pageSize;
        var (whereSql, pars) = BuildWhere(input, tenantId);

        var total = await _db.Ado.GetIntAsync($"SELECT COUNT(1) FROM mdp_transform_run_log WHERE {whereSql}", pars);
        var list = await _db.Ado.SqlQueryAsync<MdpMonitorRunLogRow>(
            $"""
            {SelectColumnsSql()}
            FROM mdp_transform_run_log
            WHERE {whereSql}
            ORDER BY start_time DESC, id DESC
            LIMIT {pageSize} OFFSET {offset}
            """,
            pars);

        foreach (var row in list)
            AttachCatalogInfo(row);

        return new { total, page, pageSize, list };
    }

    [DisplayName("MDP运行日志详情")]
    [HttpGet("mdp-monitor/detail/{id}")]
    public async Task<object> GetDetail(long id, [FromQuery] MdpMonitorQueryInput input)
    {
        var tenantId = _userManager.TenantId;
        var (whereSql, pars) = BuildWhere(input, tenantId);
        pars.Add(new SugarParameter("@Id", id));

        var row = await _db.Ado.SqlQuerySingleAsync<MdpMonitorRunLogRow>(
            $"""
            {SelectColumnsSql()}
            FROM mdp_transform_run_log
            WHERE id=@Id AND {whereSql}
            LIMIT 1
            """,
            pars);
        if (row == null)
            throw Oops.Oh("运行日志不存在");
        AttachCatalogInfo(row);
        return row;
    }

    [DisplayName("MDP同步链路详情")]
    [HttpGet("mdp-monitor/lineage")]
    public async Task<object> GetLineage([FromQuery] MdpMonitorLineageInput input)
    {
        var tenantId = _userManager.TenantId;
        var moduleCode = ResolveModuleCode(input.ModuleCode, input.JobCode);
        if (string.IsNullOrWhiteSpace(moduleCode))
            throw Oops.Oh("请选择 MDP 模块");

        var jobCode = ResolveJobCode(moduleCode, input.JobCode);
        var entityPrefix = $"{moduleCode}_%";

        var entities = await _db.Ado.SqlQueryAsync<MdpLineageEntityRow>(
            """
            SELECT e.id AS Id, e.entity_code AS EntityCode, e.entity_name AS EntityName,
                   e.entity_type AS EntityType, s.source_code AS SourceCode,
                   s.source_name AS SourceName, s.source_type AS SourceType,
                   s.db_type AS SourceDbType, s.db_host AS SourceDbHost,
                   s.db_port AS SourceDbPort, s.db_name AS SourceDbName,
                   e.source_table_name AS SourceTableName, e.source_api_path AS SourceApiPath,
                   s.db_type AS TargetDbType, s.db_host AS TargetDbHost,
                   s.db_port AS TargetDbPort, s.db_name AS TargetDbName,
                   e.target_table_name AS TargetTableName, e.sync_mode AS SyncMode,
                   e.incr_column AS IncrColumn, e.status AS Status
            FROM mdp_entity e
            LEFT JOIN mdp_source s ON s.id = e.source_id
            WHERE e.entity_code LIKE @EntityPrefix
              AND (e.tenant_id = @TenantId OR e.tenant_id = 0)
            ORDER BY e.entity_code
            """,
            new SugarParameter("@EntityPrefix", entityPrefix),
            new SugarParameter("@TenantId", tenantId));

        if (entities.Count == 0)
        {
            var emptyOutput = new MdpLineageOutput
            {
                ModuleCode = moduleCode,
                JobCode = jobCode,
                BatchId = input.BatchId,
                Stages = BuildStageDescriptions(jobCode, moduleCode),
                Entities = new List<MdpLineageEntityRow>()
            };
            AttachLineageCatalogInfo(emptyOutput);
            return emptyOutput;
        }

        var entityIds = string.Join(",", entities.Select(u => u.Id));
        var mappings = await _db.Ado.SqlQueryAsync<MdpLineageFieldMappingRow>(
            $"""
            SELECT entity_id AS EntityId, source_field AS SourceField, target_field AS TargetField,
                   field_type AS FieldType, transform_script AS TransformScript,
                   const_value AS ConstValue, lookup_table AS LookupTable,
                   is_required AS IsRequired, default_value AS DefaultValue, sort_order AS SortOrder
            FROM mdp_field_mapping
            WHERE entity_id IN ({entityIds})
            ORDER BY entity_id, sort_order, target_field
            """);
        var mappingsByEntity = mappings.GroupBy(u => u.EntityId).ToDictionary(u => u.Key, u => u.ToList());

        Dictionary<long, MdpLineageSyncLogRow> syncLogsByEntity = new();
        if (!string.IsNullOrWhiteSpace(input.BatchId))
        {
            var syncLogs = await _db.Ado.SqlQueryAsync<MdpLineageSyncLogRow>(
                """
                SELECT entity_id AS EntityId, entity_name AS EntityName, status AS Status,
                       rows_read AS RowsRead, rows_insert AS RowsInsert, rows_update AS RowsUpdate,
                       rows_skip AS RowsSkip, rows_error AS RowsError,
                       sync_start AS SyncStart, sync_end AS SyncEnd, duration_ms AS DurationMs,
                       error_msg AS ErrorMsg
                FROM mdp_sync_log
                WHERE sync_batch_id = @BatchId
                  AND (tenant_id = @TenantId OR tenant_id = 0)
                  AND entity_id IN (
                      SELECT id FROM mdp_entity
                      WHERE entity_code LIKE @EntityPrefix
                        AND (tenant_id = @TenantId OR tenant_id = 0)
                  )
                ORDER BY sync_start, id
                """,
                new SugarParameter("@BatchId", input.BatchId.Trim()),
                new SugarParameter("@EntityPrefix", entityPrefix),
                new SugarParameter("@TenantId", tenantId));
            syncLogsByEntity = syncLogs
                .GroupBy(u => u.EntityId)
                .ToDictionary(u => u.Key, u => u.OrderByDescending(x => x.SyncStart).First());
        }

        var batchId = input.BatchId?.Trim();
        foreach (var entity in entities)
        {
            entity.SourceFullName = BuildObjectFullName(entity.SourceDbType, entity.SourceDbHost, entity.SourceDbPort, entity.SourceDbName, entity.SourceTableName ?? entity.SourceApiPath);
            entity.TargetFullName = BuildObjectFullName(entity.TargetDbType, entity.TargetDbHost, entity.TargetDbPort, entity.TargetDbName, entity.TargetTableName);

            if (mappingsByEntity.TryGetValue(entity.Id, out var entityMappings) && entityMappings.Count > 0)
            {
                foreach (var mapping in entityMappings)
                {
                    mapping.MappingSource = "CONFIG";
                    mapping.IsFallback = false;
                }

                entity.FieldMappings = entityMappings;
                entity.FieldMappingCount = entityMappings.Count;
            }
            else
            {
                entity.FieldMappings = BuildFallbackFieldMappings(entity, batchId);
                entity.FieldMappingCount = entity.FieldMappings.Count;
            }

            if (syncLogsByEntity.TryGetValue(entity.Id, out var syncLog))
                entity.SyncLog = syncLog;
        }

        var output = new MdpLineageOutput
        {
            ModuleCode = moduleCode,
            JobCode = jobCode,
            BatchId = input.BatchId,
            Stages = BuildStageDescriptions(jobCode, moduleCode),
            Entities = entities
        };
        AttachLineageCatalogInfo(output);
        return output;
    }

    private static (string WhereSql, List<SugarParameter> Parameters) BuildWhere(MdpMonitorQueryInput input, long tenantId)
    {
        var where = new List<string> { BuildMdpRunLogTenantWhere(tenantId) };
        var pars = new List<SugarParameter> { new("@TenantId", tenantId) };

        var (jobFilterSql, jobFilterPars, noMatch) = BuildJobCodeFilter(input);
        if (noMatch)
            where.Add("1=0");
        else
        {
            where.Add(jobFilterSql);
            pars.AddRange(jobFilterPars);
        }

        if (!string.IsNullOrWhiteSpace(input.BatchId))
        {
            where.Add("batch_id LIKE @BatchId");
            pars.Add(new SugarParameter("@BatchId", $"%{input.BatchId.Trim()}%"));
        }
        if (!string.IsNullOrWhiteSpace(input.Status))
        {
            where.Add("status=@Status");
            pars.Add(new SugarParameter("@Status", input.Status.Trim().ToUpperInvariant()));
        }
        if (input.StartTime.HasValue)
        {
            where.Add("start_time >= @StartTime");
            pars.Add(new SugarParameter("@StartTime", input.StartTime.Value));
        }
        if (input.EndTime.HasValue)
        {
            where.Add("start_time <= @EndTime");
            pars.Add(new SugarParameter("@EndTime", input.EndTime.Value));
        }

        return (string.Join(" AND ", where), pars);
    }

    /// <summary>
    /// MDP 转换任务当前以 tenant_id=0 写入运行日志；登录租户查询时需兼容这类全局任务记录。
    /// </summary>
    internal static string BuildMdpRunLogTenantWhere(long tenantId) =>
        tenantId > 0 ? "(tenant_id = @TenantId OR tenant_id = 0)" : "tenant_id = 0";

    private static object BuildCatalogResponse()
    {
        return JobCatalog.Values
            .OrderBy(u => u.JobCode, StringComparer.OrdinalIgnoreCase)
            .Select(u => new
            {
                jobCode = u.JobCode,
                displayName = u.DisplayName,
                businessDomainCode = u.BusinessDomainCode,
                businessDomainName = u.BusinessDomainName,
                consumerModules = u.ConsumerModules,
                scopeType = u.ScopeType,
                moduleCode = ResolveModuleCodeFromJobCode(u.JobCode),
                scheduleJobId = u.ScheduleJobId
            })
            .ToList();
    }

    private static (string Sql, List<SugarParameter> Parameters, bool NoMatch) BuildJobCodeFilter(MdpMonitorQueryInput input)
    {
        var pars = new List<SugarParameter>();

        if (!string.IsNullOrWhiteSpace(input.JobCode))
        {
            pars.Add(new SugarParameter("@JobCode", input.JobCode.Trim().ToUpperInvariant()));
            return ("job_code=@JobCode", pars, false);
        }

        var hasDomainFilter = !string.IsNullOrWhiteSpace(input.BusinessDomainCode);
        var consumerModule = !string.IsNullOrWhiteSpace(input.ConsumerModule)
            ? input.ConsumerModule.Trim()
            : !string.IsNullOrWhiteSpace(input.ModuleCode) ? input.ModuleCode.Trim() : null;
        var hasConsumerFilter = !string.IsNullOrWhiteSpace(consumerModule);

        if (!hasDomainFilter && !hasConsumerFilter)
            return ("IFNULL(job_code, '') LIKE '%MDP%'", pars, false);

        var allowed = ResolveAllowedJobCodes(input.BusinessDomainCode, consumerModule);
        if (allowed.Count == 0)
            return (string.Empty, pars, true);

        if (allowed.Count == 1)
        {
            pars.Add(new SugarParameter("@JobCode", allowed.First()));
            return ("job_code=@JobCode", pars, false);
        }

        var inParts = new List<string>();
        var index = 0;
        foreach (var code in allowed.OrderBy(u => u, StringComparer.OrdinalIgnoreCase))
        {
            var paramName = $"@JobCode{index++}";
            inParts.Add(paramName);
            pars.Add(new SugarParameter(paramName, code));
        }

        return ($"job_code IN ({string.Join(", ", inParts)})", pars, false);
    }

    private static HashSet<string> ResolveAllowedJobCodes(string? businessDomainCode, string? consumerModule)
    {
        IEnumerable<MdpJobCatalogItem> items = JobCatalog.Values;

        if (!string.IsNullOrWhiteSpace(businessDomainCode))
        {
            var domain = businessDomainCode.Trim();
            items = items.Where(u => string.Equals(u.BusinessDomainCode, domain, StringComparison.OrdinalIgnoreCase));
        }

        if (!string.IsNullOrWhiteSpace(consumerModule))
        {
            var module = consumerModule.Trim();
            items = items.Where(u => u.ConsumerModules.Contains(module, StringComparer.OrdinalIgnoreCase));
        }

        return items.Select(u => u.JobCode).ToHashSet(StringComparer.OrdinalIgnoreCase);
    }

    private static void AttachCatalogInfo(MdpMonitorRunLogRow row)
    {
        if (row == null || string.IsNullOrWhiteSpace(row.JobCode))
            return;

        if (!JobCatalog.TryGetValue(row.JobCode.Trim(), out var item))
            return;

        row.BusinessDomainCode = item.BusinessDomainCode;
        row.BusinessDomainName = item.BusinessDomainName;
        row.ConsumerModules = string.Join(",", item.ConsumerModules);
        row.ScopeType = item.ScopeType;
        row.DisplayName = item.DisplayName;
        row.ScheduleJobId = item.ScheduleJobId;
    }

    private static void AttachLineageCatalogInfo(MdpLineageOutput output)
    {
        if (output == null || string.IsNullOrWhiteSpace(output.JobCode))
            return;

        if (!JobCatalog.TryGetValue(output.JobCode.Trim(), out var item))
            return;

        output.BusinessDomainCode = item.BusinessDomainCode;
        output.BusinessDomainName = item.BusinessDomainName;
        output.ConsumerModules = string.Join(",", item.ConsumerModules);
        output.ScopeType = item.ScopeType;
        output.DisplayName = item.DisplayName;
        output.ScheduleJobId = item.ScheduleJobId;
    }

    private static string FormatConsumerModulesLabel(MdpJobCatalogItem item) =>
        string.Join("、", item.ConsumerModules);

    private static List<MdpLineageStageRow> BuildStageDescriptions(string? jobCode, string? moduleCode)
    {
        if (!string.IsNullOrWhiteSpace(jobCode) && JobCatalog.TryGetValue(jobCode.Trim(), out var catalogItem))
        {
            return catalogItem.BusinessDomainCode switch
            {
                "order_delivery" => BuildOrderDeliveryStages(catalogItem),
                "work_schedule" => BuildWorkScheduleStages(catalogItem),
                "supply_purchase" => BuildSupplyPurchaseStages(catalogItem),
                "purchase_execution" => BuildPurchaseExecutionStages(catalogItem),
                _ => BuildGenericStages(moduleCode)
            };
        }

        return BuildGenericStages(moduleCode);
    }

    private static List<MdpLineageStageRow> BuildOrderDeliveryStages(MdpJobCatalogItem item)
    {
        var consumers = FormatConsumerModulesLabel(item);
        return new List<MdpLineageStageRow>
        {
            new() { StageCode = "STAGING", StageName = "订单交付域 · 贴源同步", Layer = "mdp_stg", Description = $"按 mdp_entity 登记订单交付域源对象抽取数据，保留 raw_data JSON 便于追溯；产出供 {consumers} 消费。", InputObjects = "旧系统 / 当前库源对象", OutputObjects = "mdp_stg_so, mdp_stg_ship_trans", Execution = "S1MdpSyncTransformService.SyncStagingAsync" },
            new() { StageCode = "STANDARD", StageName = "订单交付域 · 标准层转换", Layer = "mdp_std", Description = "解析贴源 raw_data，做字段标准化、租户兜底和幂等写入。", InputObjects = "mdp_stg_so, mdp_stg_ship_trans", OutputObjects = "mdp_std_so, mdp_std_ship_trans", Execution = "S1MdpSyncTransformService.BuildStandardCommands" },
            new() { StageCode = "DWD", StageName = "订单交付域 · DWD宽表", Layer = "dwd", Description = $"沉淀订单交付事实，供 {consumers} 看板与诊断读取。", InputObjects = "mdp_std_so, mdp_std_ship_trans", OutputObjects = "dwd_ship_trans", Execution = "S1MdpSyncTransformService.BuildDwdAsync" },
            new() { StageCode = "KPI", StageName = "指标写入", Layer = "ado_s9", Description = $"计算订单交付域 L1 指标并写入统一指标值表，供 {consumers} 消费。", InputObjects = "mdp_std_so, dwd_ship_trans", OutputObjects = "ado_s9_kpi_value_l1_day", Execution = "S1MdpSyncTransformService.BuildS1KpiValuesAsync" }
        };
    }

    private static List<MdpLineageStageRow> BuildWorkScheduleStages(MdpJobCatalogItem item)
    {
        var consumers = FormatConsumerModulesLabel(item);
        return new List<MdpLineageStageRow>
        {
            new() { StageCode = "STAGING", StageName = "工单排程域 · 贴源同步", Layer = "mdp_stg", Description = $"按 mdp_entity 登记工单排程域源对象抽取数据；产出供 {consumers} 消费。", InputObjects = "工单 / 工序 / 排程源对象", OutputObjects = "mdp_stg_*", Execution = "S2MdpSyncTransformService.SyncStagingAsync" },
            new() { StageCode = "STANDARD", StageName = "工单排程域 · 标准层转换", Layer = "mdp_std", Description = "将工单、工序、排程等对象标准化。", InputObjects = "mdp_stg_*", OutputObjects = "mdp_std_*", Execution = "S2MdpSyncTransformService.BuildStandardCommands" },
            new() { StageCode = "DWD", StageName = "工单排程域 · DWD宽表", Layer = "dwd", Description = $"生成制造执行与排程分析宽表，供 {consumers} 读取。", InputObjects = "mdp_std_*", OutputObjects = "dwd_*", Execution = "S2MdpSyncTransformService.BuildDwdAsync" },
            new() { StageCode = "KPI", StageName = "指标写入", Layer = "ado_s9", Description = $"写入工单排程域 KPI，供 {consumers} 消费。", InputObjects = "mdp_std_* / dwd_*", OutputObjects = "ado_s9_kpi_value_*", Execution = "S2MdpSyncTransformService.BuildS2KpiValuesAsync" }
        };
    }

    private static List<MdpLineageStageRow> BuildSupplyPurchaseStages(MdpJobCatalogItem item)
    {
        var consumers = FormatConsumerModulesLabel(item);
        return new List<MdpLineageStageRow>
        {
            new() { StageCode = "STAGING", StageName = "供应采购域 · 贴源同步", Layer = "mdp_stg", Description = $"按 mdp_entity 登记供应采购域源对象抽取数据；产出供 {consumers} 消费。", InputObjects = "供应 / 物料 / 采购源对象", OutputObjects = "mdp_stg_*", Execution = "S3MdpSyncTransformService.SyncStagingAsync" },
            new() { StageCode = "STANDARD", StageName = "供应采购域 · 标准层转换", Layer = "mdp_std", Description = "将供应、物料、采购、交货计划等对象标准化。", InputObjects = "mdp_stg_*", OutputObjects = "mdp_std_*", Execution = "S3MdpSyncTransformService.BuildStandardCommands" },
            new() { StageCode = "DWD", StageName = "供应采购域 · DWD宽表", Layer = "dwd", Description = $"生成供应交付、齐套、风险等分析宽表，供 {consumers} 读取。", InputObjects = "mdp_std_*", OutputObjects = "dwd_supplier_delivery / dwd_material_readiness 等", Execution = "S3MdpSyncTransformService.BuildDwdAsync" },
            new() { StageCode = "KPI", StageName = "指标写入", Layer = "ado_s9", Description = $"写入供应采购域指标，供 {consumers} 消费。", InputObjects = "mdp_std_* / dwd_*", OutputObjects = "ado_s9_kpi_value_*", Execution = "S3MdpSyncTransformService.BuildS3KpiValuesAsync" }
        };
    }

    private static List<MdpLineageStageRow> BuildPurchaseExecutionStages(MdpJobCatalogItem item)
    {
        var consumers = FormatConsumerModulesLabel(item);
        return new List<MdpLineageStageRow>
        {
            new() { StageCode = "STAGING", StageName = "采购执行域 · 贴源同步", Layer = "mdp_stg_s4_*", Description = $"同步采购执行域 IQC/发货/退货/欠料事实，供 {consumers} 消费；共享采购主链仍由供应采购域维护。", InputObjects = "PurOrdRctDetail / scm_shdzb / srm_polist_ds / dwd_material_shortage", OutputObjects = "mdp_stg_s4_iqc / mdp_stg_s4_shipment / mdp_stg_s4_return / mdp_stg_s4_shortage", Execution = "S4MdpSyncTransformService.SyncStagingAsync" },
            new() { StageCode = "STANDARD", StageName = "采购执行域 · 标准层转换", Layer = "mdp_std_s4_*", Description = "将采购执行域贴源对象标准化，并统计供应采购域共享标准层行数。", InputObjects = "mdp_stg_s4_*", OutputObjects = "mdp_std_s4_iqc / mdp_std_s4_shipment / mdp_std_s4_return / mdp_std_s4_shortage", Execution = "S4MdpSyncTransformService.BuildStandardCommands" },
            new() { StageCode = "DWD", StageName = "采购执行域 · DWD宽表", Layer = "dwd", Description = $"写入采购执行分析宽表，供 {consumers} 读取。", InputObjects = "dwd_supplier_delivery / mdp_std_s4_*", OutputObjects = "dwd_s4_purchase_execution / dwd_po_trans / dwd_qc_trans", Execution = "S4MdpSyncTransformService.BuildDwdAsync" },
            new() { StageCode = "KPI", StageName = "指标写入", Layer = "ado_s9", Description = $"写入采购执行域 L1/L2/L3 指标，供 {consumers} 消费。", InputObjects = "mdp_std_delivery_schedule / dwd_supplier_delivery / dwd_s4_purchase_execution", OutputObjects = "ado_s9_kpi_value_l1/l2/l3_day", Execution = "S4MdpSyncTransformService.BuildS4KpiValuesAsync" }
        };
    }

    /// <summary>
    /// 贴源同步在代码中维护、但未写入 mdp_field_mapping 的实体主键/业务键提示（仅监控展示兜底）。
    /// </summary>
    private static readonly Dictionary<string, (string SourceRowId, string SourceBizKeyExpr)> KnownStagingEntityKeys =
        new(StringComparer.OrdinalIgnoreCase)
        {
            ["S4_IQC_RECEIPT"] = ("RecID", "CONCAT(IFNULL(s.`Domain`,''), ':', IFNULL(s.`Receiver`,''), ':', IFNULL(s.`Line`,''))"),
            ["S4_SHIPMENT_EXEC"] = ("id", "CONCAT(IFNULL(s.`glid`,''), ':', IFNULL(s.`id`,''))"),
            ["S4_RETURN_EXEC"] = ("Id", "s.`dsnum`"),
            ["S4_SHORTAGE_EXEC"] = ("id", "CONCAT(IFNULL(s.`work_order`,''), ':', IFNULL(s.`component_item_code`,''))")
        };

    private static List<MdpLineageFieldMappingRow> BuildFallbackFieldMappings(MdpLineageEntityRow entity, string? batchId)
    {
        var sourceRowId = entity.IncrColumn;
        string? sourceBizKeyExpr = null;
        if (!string.IsNullOrWhiteSpace(entity.EntityCode) &&
            KnownStagingEntityKeys.TryGetValue(entity.EntityCode, out var known))
        {
            sourceRowId ??= known.SourceRowId;
            sourceBizKeyExpr = known.SourceBizKeyExpr;
        }

        var fallbackNote = "当前实体未配置逐字段映射，贴源同步保留源行 raw_data";
        var mappings = new List<MdpLineageFieldMappingRow>();
        var sort = 10;

        void Add(string sourceField, string targetField, string fieldType, string? transformScript, string? constValue = null, bool isRequired = false)
        {
            mappings.Add(new MdpLineageFieldMappingRow
            {
                EntityId = entity.Id,
                SourceField = sourceField,
                TargetField = targetField,
                FieldType = fieldType,
                TransformScript = transformScript,
                ConstValue = constValue,
                IsRequired = isRequired,
                SortOrder = sort,
                MappingSource = "FALLBACK",
                IsFallback = true
            });
            sort += 10;
        }

        Add("tenant_id", "tenant_id", "DIRECT", "当前租户或全局租户兜底");
        Add($"CONST:{entity.SourceCode ?? "AIDOP"}", "source_system", "CONST", "来源数据源编码", entity.SourceCode ?? "AIDOP", isRequired: true);
        Add($"CONST:{entity.SourceTableName ?? entity.SourceApiPath ?? "--"}", "source_table", "CONST", "源表名", entity.SourceTableName ?? entity.SourceApiPath, isRequired: true);

        if (!string.IsNullOrWhiteSpace(sourceRowId))
            Add(sourceRowId, "source_row_id", "DIRECT", "来自 mdp_entity.incr_column 或实体主键配置");
        else
            Add("--", "source_row_id", "DIRECT", fallbackNote);

        if (!string.IsNullOrWhiteSpace(sourceBizKeyExpr))
            Add(sourceBizKeyExpr, "source_biz_key", "EXPR", "来自实体业务键表达式", isRequired: true);
        else
            Add("--", "source_biz_key", "EXPR", fallbackNote);

        Add("*", "raw_data", "JSON", "源行整行 JSON");
        Add("CONST", "sync_batch_id", "CONST", "当前同步批次", string.IsNullOrWhiteSpace(batchId) ? "当前同步批次" : batchId, isRequired: true);
        Add("NOW()", "sync_time", "CONST", "同步时间", isRequired: true);

        return mappings;
    }

    private static List<MdpLineageStageRow> BuildGenericStages(string? moduleCode)
    {
        if (string.Equals(moduleCode, "S1", StringComparison.OrdinalIgnoreCase))
            return BuildOrderDeliveryStages(JobCatalog["S1_MDP_SYNC_TRANSFORM"]);
        if (string.Equals(moduleCode, "S2", StringComparison.OrdinalIgnoreCase))
            return BuildWorkScheduleStages(JobCatalog["S2_MDP_SYNC_TRANSFORM"]);
        if (string.Equals(moduleCode, "S3", StringComparison.OrdinalIgnoreCase))
            return BuildSupplyPurchaseStages(JobCatalog["S3_MDP_SYNC_TRANSFORM"]);
        if (string.Equals(moduleCode, "S4", StringComparison.OrdinalIgnoreCase))
            return BuildPurchaseExecutionStages(JobCatalog["S4_MDP_SYNC_TRANSFORM"]);

        return new List<MdpLineageStageRow>
        {
            new() { StageCode = "STAGING", StageName = "贴源同步", Layer = "mdp_stg", Description = "按 mdp_entity 登记源对象抽取数据。", InputObjects = "源对象", OutputObjects = "mdp_stg_*", Execution = "MDP 同步服务" },
            new() { StageCode = "STANDARD", StageName = "标准层转换", Layer = "mdp_std", Description = "标准层/DWD/KPI 当前由后端 Service 承载。", InputObjects = "mdp_stg_*", OutputObjects = "mdp_std_* / dwd_* / 指标表", Execution = "MDP 转换服务" }
        };
    }

    private static string? ResolveModuleCodeFromJobCode(string? jobCode)
    {
        if (string.IsNullOrWhiteSpace(jobCode))
            return null;

        return ModuleJobCodes.FirstOrDefault(u =>
            string.Equals(u.Value, jobCode.Trim(), StringComparison.OrdinalIgnoreCase)).Key;
    }

    private static string? ResolveJobCode(string? moduleCode, string? jobCode)
    {
        if (!string.IsNullOrWhiteSpace(jobCode))
            return jobCode.Trim().ToUpperInvariant();

        if (string.IsNullOrWhiteSpace(moduleCode))
            return null;

        return ModuleJobCodes.TryGetValue(moduleCode.Trim(), out var mapped) ? mapped : null;
    }

    private static string? ResolveModuleCode(string? moduleCode, string? jobCode)
    {
        if (!string.IsNullOrWhiteSpace(moduleCode))
            return moduleCode.Trim().ToUpperInvariant();

        if (string.IsNullOrWhiteSpace(jobCode))
            return null;

        var normalizedJobCode = jobCode.Trim();
        return ModuleJobCodes.FirstOrDefault(u => string.Equals(u.Value, normalizedJobCode, StringComparison.OrdinalIgnoreCase)).Key;
    }

    private static string? BuildObjectFullName(string? dbType, string? host, int? port, string? dbName, string? objectName)
    {
        if (string.IsNullOrWhiteSpace(objectName))
            return null;

        var databaseObject = string.IsNullOrWhiteSpace(dbName) ? objectName : $"{dbName}.{objectName}";
        var hostPart = string.IsNullOrWhiteSpace(host) ? null : port.HasValue ? $"{host}:{port}" : host;
        return string.Join(" / ", new[] { dbType, hostPart, databaseObject }.Where(u => !string.IsNullOrWhiteSpace(u)));
    }

    private static string SelectColumnsSql()
    {
        return """
            SELECT id AS Id, tenant_id AS TenantId, job_code AS JobCode, job_name AS JobName, trigger_type AS TriggerType,
                   batch_id AS BatchId, status AS Status, start_time AS StartTime, end_time AS EndTime, duration_ms AS DurationMs,
                   stage_rows AS StageRows, standard_rows AS StandardRows, dwd_rows AS DwdRows,
                   error_message AS ErrorMessage, summary_json AS SummaryJson, create_time AS CreateTime, update_time AS UpdateTime
            """;
    }
}

public sealed record MdpJobCatalogItem(
    string JobCode,
    string BusinessDomainCode,
    string BusinessDomainName,
    string[] ConsumerModules,
    string ScopeType,
    string DisplayName,
    string? ScheduleJobId);

public class MdpMonitorQueryInput
{
    public string? BusinessDomainCode { get; set; }
    public string? ConsumerModule { get; set; }
    public string? ModuleCode { get; set; }
    public string? JobCode { get; set; }
    public string? BatchId { get; set; }
    public string? Status { get; set; }
    public DateTime? StartTime { get; set; }
    public DateTime? EndTime { get; set; }
}

public sealed class MdpMonitorListInput : MdpMonitorQueryInput
{
    public int Page { get; set; } = 1;
    public int PageSize { get; set; } = 10;
}

public sealed class MdpMonitorLineageInput : MdpMonitorQueryInput
{
}

public sealed class MdpMonitorRunLogRow
{
    public long Id { get; set; }
    public long TenantId { get; set; }
    public string? JobCode { get; set; }
    public string? JobName { get; set; }
    public string? TriggerType { get; set; }
    public string? BatchId { get; set; }
    public string? Status { get; set; }
    public DateTime? StartTime { get; set; }
    public DateTime? EndTime { get; set; }
    public int? DurationMs { get; set; }
    public int? StageRows { get; set; }
    public int? StandardRows { get; set; }
    public int? DwdRows { get; set; }
    public string? ErrorMessage { get; set; }
    public string? SummaryJson { get; set; }
    public DateTime? CreateTime { get; set; }
    public DateTime? UpdateTime { get; set; }
    public string? BusinessDomainCode { get; set; }
    public string? BusinessDomainName { get; set; }
    public string? ConsumerModules { get; set; }
    public string? ScopeType { get; set; }
    public string? DisplayName { get; set; }
    public string? ScheduleJobId { get; set; }
}

public sealed class MdpLineageOutput
{
    public string? ModuleCode { get; set; }
    public string? JobCode { get; set; }
    public string? BatchId { get; set; }
    public string? BusinessDomainCode { get; set; }
    public string? BusinessDomainName { get; set; }
    public string? ConsumerModules { get; set; }
    public string? ScopeType { get; set; }
    public string? DisplayName { get; set; }
    public string? ScheduleJobId { get; set; }
    public List<MdpLineageStageRow> Stages { get; set; } = new();
    public List<MdpLineageEntityRow> Entities { get; set; } = new();
}

public sealed class MdpLineageStageRow
{
    public string? StageCode { get; set; }
    public string? StageName { get; set; }
    public string? Layer { get; set; }
    public string? Description { get; set; }
    public string? InputObjects { get; set; }
    public string? OutputObjects { get; set; }
    public string? Execution { get; set; }
}

public sealed class MdpLineageEntityRow
{
    public long Id { get; set; }
    public string? EntityCode { get; set; }
    public string? EntityName { get; set; }
    public string? EntityType { get; set; }
    public string? SourceCode { get; set; }
    public string? SourceName { get; set; }
    public string? SourceType { get; set; }
    public string? SourceDbType { get; set; }
    public string? SourceDbHost { get; set; }
    public int? SourceDbPort { get; set; }
    public string? SourceDbName { get; set; }
    public string? SourceTableName { get; set; }
    public string? SourceApiPath { get; set; }
    public string? SourceFullName { get; set; }
    public string? TargetDbType { get; set; }
    public string? TargetDbHost { get; set; }
    public int? TargetDbPort { get; set; }
    public string? TargetDbName { get; set; }
    public string? TargetTableName { get; set; }
    public string? TargetFullName { get; set; }
    public string? SyncMode { get; set; }
    public string? IncrColumn { get; set; }
    public int? Status { get; set; }
    public int FieldMappingCount { get; set; }
    public List<MdpLineageFieldMappingRow> FieldMappings { get; set; } = new();
    public MdpLineageSyncLogRow? SyncLog { get; set; }
}

public sealed class MdpLineageFieldMappingRow
{
    public long EntityId { get; set; }
    public string? SourceField { get; set; }
    public string? TargetField { get; set; }
    public string? FieldType { get; set; }
    public string? TransformScript { get; set; }
    public string? ConstValue { get; set; }
    public string? LookupTable { get; set; }
    public bool IsRequired { get; set; }
    public string? DefaultValue { get; set; }
    public int SortOrder { get; set; }
    public string? MappingSource { get; set; }
    public bool IsFallback { get; set; }
}

public sealed class MdpLineageSyncLogRow
{
    public long EntityId { get; set; }
    public string? EntityName { get; set; }
    public string? Status { get; set; }
    public long? RowsRead { get; set; }
    public long? RowsInsert { get; set; }
    public long? RowsUpdate { get; set; }
    public long? RowsSkip { get; set; }
    public long? RowsError { get; set; }
    public DateTime? SyncStart { get; set; }
    public DateTime? SyncEnd { get; set; }
    public int? DurationMs { get; set; }
    public string? ErrorMsg { get; set; }
}