using Admin.NET.Core.Service;
using Admin.NET.Plugin.AiDOP.FinishedWarehouse;
using Admin.NET.Plugin.AiDOP.Manufacturing;
using Admin.NET.Plugin.AiDOP.MaterialWarehouse;
using Microsoft.Extensions.Logging;

namespace Admin.NET.Plugin.AiDOP.DataPlatform;

/// <summary>
/// S5/S6/S7 T8 KPI 手动刷新统一编排（看板"刷新"按钮真实跑批入口）。
/// 单次刷新语义：抢全局刷新锁 → T8 基表入站（硬门，共享 6 表）→ 本模块 RunFull(MANUAL) → 汇总逐指标状态 → 释放锁。
/// 与 Cron job_s5_t8_kpi_refresh 共享同一把锁（<see cref="RefreshLockKey"/>），保证手动刷新与定时跑批互斥、并发手动刷新排他。
/// 入站为 S5/S6/S7 共用（T8BaseInboundMdpSyncService 6 张基表无法按模块拆），故刷任一模块均触发一次全量入站。
/// S5_L1_002 / S5_L1_004 仍 legacy 直连 T8（本轮不改），随 S5 RunFull 一并执行，逐指标标 LEGACY_SUCCESS。
///
/// 锁设计（加固）：用持有者无关的硬 TTL 键（SysCacheService.Set 带过期），而非 BeginCacheLock。
/// 原因：BeginCacheLock 在持有者线程存活期间会续租，一旦某次运行意外挂死（如源库慢查询无超时）会永久占锁、
/// 阻塞后续所有刷新。改为硬 TTL 后：正常路径 finally 主动 Remove；即使挂死，键到 <see cref="RefreshLockTtlSeconds"/> 也自动过期。
/// 配合 QueryT8Async 的 T8 命令超时（60s）与主库命令超时（30s），单次运行时长恒 &lt; TTL，正常不会误过期。
/// </summary>
public sealed class AidopT8KpiManualRefreshService : ITransient
{
    /// <summary>手动刷新 + Cron 共享的全局互斥锁 key（覆盖 inbound + transform 整段）。</summary>
    public const string RefreshLockKey = "aidop:t8kpi:refresh:lock";

    /// <summary>刷新锁硬 TTL（秒，持有者无关）：到点自动过期，即使某次运行意外挂死也不会永久阻塞后续刷新。
    /// 取值须大于加固后最坏运行时长（T8 查询各 ≤60s、主库命令 ≤30s，全程数分钟内），10 分钟为安全上限。</summary>
    public const int RefreshLockTtlSeconds = 600;

    // legacy 直连 T8 的 KPI（仅剩 S5_L1_004 TVF；S5_L1_002 已中台化），逐指标状态标 LEGACY_SUCCESS 以示区分。
    private static readonly HashSet<string> LegacyKpiCodes = new(StringComparer.OrdinalIgnoreCase) { "S5_L1_004" };

    private readonly T8BaseInboundMdpSyncService _inbound;
    private readonly S5MdpSyncTransformService _s5;
    private readonly S6MdpSyncTransformService _s6;
    private readonly S7MdpSyncTransformService _s7;
    private readonly SysCacheService _cache;
    private readonly ILogger<AidopT8KpiManualRefreshService> _logger;

    public AidopT8KpiManualRefreshService(
        T8BaseInboundMdpSyncService inbound,
        S5MdpSyncTransformService s5,
        S6MdpSyncTransformService s6,
        S7MdpSyncTransformService s7,
        SysCacheService cache,
        ILogger<AidopT8KpiManualRefreshService> logger)
    {
        _inbound = inbound;
        _s5 = s5;
        _s6 = s6;
        _s7 = s7;
        _cache = cache;
        _logger = logger;
    }

    /// <summary>执行一次模块级手动刷新（S5/S6/S7）。返回统一契约，绝不抛业务异常（取消除外）。</summary>
    public async Task<AidopKpiRefreshResult> RunModuleRefreshAsync(string moduleCode, CancellationToken cancellationToken)
    {
        var mc = string.IsNullOrWhiteSpace(moduleCode) ? string.Empty : moduleCode.Trim().ToUpperInvariant();
        var startedAt = DateTime.Now;
        var result = new AidopKpiRefreshResult
        {
            ModuleCode = mc,
            StartedAt = startedAt.ToString("yyyy-MM-dd HH:mm:ss")
        };

        if (mc is not ("S5" or "S6" or "S7"))
        {
            result.Ok = false;
            result.OverallStatus = "SKIPPED";
            result.Message = $"模块 {mc} 不支持 T8 KPI 手动刷新";
            Finish(result, startedAt);
            return result;
        }

        // 硬 TTL 锁：ExistKey 命中即判定已有刷新在跑（手动或定时）；否则 Set(带 TTL) 占锁。
        // 单实例 + 人工点击/每日 5 次定时下，ExistKey→Set 的微小竞态概率可忽略；即便未主动释放，TTL 到点自动过期。
        if (_cache.ExistKey(RefreshLockKey))
        {
            result.Ok = false;
            result.OverallStatus = "REFRESHING";
            result.Message = "T8 KPI 刷新正在进行中（手动或定时任务占用），请稍后重试";
            Finish(result, startedAt);
            return result;
        }
        _cache.Set(RefreshLockKey, $"MANUAL:{mc}:{startedAt:yyyyMMddHHmmss}", TimeSpan.FromSeconds(RefreshLockTtlSeconds));

        try
        {
            // ① 入站硬门：共享 6 张 T8 基表全量入站；失败即中断，不用旧 std 伪装成功。
            try
            {
                var inbound = await _inbound.RunInboundAsync(0, true, null, cancellationToken);
                result.Inbound.Ok = true;
                result.Inbound.StageRows = inbound.Tables.Sum(t => t.StgRows);
                result.Inbound.StandardRows = inbound.Tables.Sum(t => t.StdRows);
            }
            catch (OperationCanceledException) when (cancellationToken.IsCancellationRequested)
            {
                throw;
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "[手动刷新] {Module} T8 基表入站失败", mc);
                result.Ok = false;
                result.OverallStatus = "FAILED";
                result.Inbound.Ok = false;
                result.Inbound.Message = ex.Message;
                result.Message = "源数据入站失败，未更新 KPI（保留原有看板数据）";
                Finish(result, startedAt);
                return result;
            }

            // ② 本模块 KPI 转换（RunFull 为全有全无：任一 KPI 异常即整体抛错）。
            string batchId;
            int dwdRows;
            int kpiRows;
            Dictionary<string, int> perKpiRows;
            List<string> denomStatus;
            try
            {
                switch (mc)
                {
                    case "S5":
                        var r5 = await _s5.RunFullAsync(cancellationToken, "MANUAL");
                        batchId = r5.BatchId;
                        dwdRows = r5.DwdRows;
                        kpiRows = r5.KpiRows;
                        perKpiRows = r5.PerKpiKpiRows;
                        denomStatus = r5.KpiDenominatorStatus;
                        break;
                    case "S6":
                        var r6 = await _s6.RunFullAsync(cancellationToken, "MANUAL");
                        batchId = r6.BatchId;
                        dwdRows = r6.DwdRows;
                        kpiRows = r6.KpiRows;
                        perKpiRows = r6.PerKpiKpiRows;
                        denomStatus = r6.KpiDenominatorStatus;
                        break;
                    default:
                        var r7 = await _s7.RunFullAsync(cancellationToken, "MANUAL");
                        batchId = r7.BatchId;
                        dwdRows = r7.DwdRows;
                        kpiRows = r7.KpiRows;
                        perKpiRows = r7.PerKpiKpiRows;
                        denomStatus = r7.KpiDenominatorStatus;
                        break;
                }
            }
            catch (OperationCanceledException) when (cancellationToken.IsCancellationRequested)
            {
                throw;
            }
            catch (Exception ex)
            {
                _logger.LogError(ex, "[手动刷新] {Module} KPI 转换失败", mc);
                result.Ok = false;
                result.OverallStatus = "FAILED";
                result.Transform.Ok = false;
                result.Transform.Message = ex.Message;
                result.Message = "KPI 计算失败（源数据已入站，看板保留原有数据）";
                Finish(result, startedAt);
                return result;
            }

            result.BatchId = batchId;
            result.Transform.Ok = true;
            result.Transform.DwdRows = dwdRows;
            result.Transform.KpiRows = kpiRows;

            // ③ 逐指标状态：denom=OK → SUCCESS（legacy→LEGACY_SUCCESS）；denom=NO_* → NO_DATA（真实无数据，非伪造 0）。
            var denomMap = ParseDenominator(denomStatus);
            foreach (var kv in perKpiRows.OrderBy(k => k.Key, StringComparer.Ordinal))
            {
                var code = kv.Key;
                var denom = denomMap.TryGetValue(code, out var d) ? d : "OK";
                var ok = string.Equals(denom, "OK", StringComparison.OrdinalIgnoreCase);
                var status = ok
                    ? (LegacyKpiCodes.Contains(code) ? "LEGACY_SUCCESS" : "SUCCESS")
                    : "NO_DATA";
                result.PerKpi.Add(new AidopKpiRefreshPerKpi
                {
                    MetricCode = code,
                    Status = status,
                    Rows = kv.Value,
                    Message = ok ? null : denom
                });
            }

            result.SuccessCount = result.PerKpi.Count(p => p.Status is "SUCCESS" or "LEGACY_SUCCESS");
            result.NoDataCount = result.PerKpi.Count(p => p.Status == "NO_DATA");
            result.FailedCount = result.PerKpi.Count(p => p.Status is "FAILED" or "LEGACY_FAILED");

            result.Ok = true;
            // RunFull 为全有全无，成功路径下 FailedCount 恒为 0；PARTIAL_SUCCESS 仅为契约保留态。
            result.OverallStatus = result.FailedCount > 0 ? "PARTIAL_SUCCESS" : "SUCCESS";
            Finish(result, startedAt);
            result.Message = $"刷新完成：成功 {result.SuccessCount}，无数据 {result.NoDataCount}，失败 {result.FailedCount}，耗时 {result.DurationMs / 1000.0:0.0} 秒";
            return result;
        }
        finally
        {
            // 无论成功/失败/取消，主动释放锁（硬 TTL 是兜底，正常路径这里即时释放）。
            _cache.Remove(RefreshLockKey);
        }
    }

    /// <summary>把 "S5_L1_001:OK" 形式的分母状态列表解析为 metricCode → status 字典。</summary>
    private static Dictionary<string, string> ParseDenominator(List<string> denom)
    {
        var map = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
        foreach (var item in denom)
        {
            if (string.IsNullOrWhiteSpace(item)) continue;
            var idx = item.IndexOf(':');
            if (idx <= 0) continue;
            map[item.Substring(0, idx).Trim()] = item.Substring(idx + 1).Trim();
        }
        return map;
    }

    private static void Finish(AidopKpiRefreshResult result, DateTime startedAt)
    {
        var finishedAt = DateTime.Now;
        result.FinishedAt = finishedAt.ToString("yyyy-MM-dd HH:mm:ss");
        result.DurationMs = (long)(finishedAt - startedAt).TotalMilliseconds;
    }
}

/// <summary>手动刷新统一返回契约（PascalCase 属性经框架序列化为 camelCase：Ok→ok、BatchId→batchId）。</summary>
public sealed class AidopKpiRefreshResult
{
    public bool Ok { get; set; }
    public string ModuleCode { get; set; } = string.Empty;

    /// <summary>整体状态：SUCCESS / PARTIAL_SUCCESS / FAILED / REFRESHING / SKIPPED。</summary>
    public string OverallStatus { get; set; } = string.Empty;
    public string? BatchId { get; set; }
    public string StartedAt { get; set; } = string.Empty;
    public string FinishedAt { get; set; } = string.Empty;
    public long DurationMs { get; set; }
    public AidopKpiRefreshInbound Inbound { get; set; } = new();
    public AidopKpiRefreshTransform Transform { get; set; } = new();
    public int SuccessCount { get; set; }
    public int NoDataCount { get; set; }
    public int FailedCount { get; set; }
    public List<AidopKpiRefreshPerKpi> PerKpi { get; set; } = new();
    public string Message { get; set; } = string.Empty;
}

public sealed class AidopKpiRefreshInbound
{
    public bool Ok { get; set; }
    public int StageRows { get; set; }
    public int StandardRows { get; set; }
    public string? Message { get; set; }
}

public sealed class AidopKpiRefreshTransform
{
    public bool Ok { get; set; }
    public int DwdRows { get; set; }
    public int KpiRows { get; set; }
    public string? Message { get; set; }
}

/// <summary>单指标刷新状态：SUCCESS / LEGACY_SUCCESS / NO_DATA / FAILED / LEGACY_FAILED。</summary>
public sealed class AidopKpiRefreshPerKpi
{
    public string MetricCode { get; set; } = string.Empty;
    public string Status { get; set; } = string.Empty;
    public int Rows { get; set; }
    public string? Message { get; set; }
}