using Admin.NET.Plugin.AiDOP.Infrastructure;

namespace Admin.NET.Plugin.AiDOP.Order;

/// <summary>
/// S1 订单评审编排：资源检查、状态更新、工单生成、运行日志。
/// </summary>
public class OrderReviewOrchestrationService : ITransient
{
    public const string ActionReview = "S1_ORDER_REVIEW";
    public const string ActionConfirm = "S1_DELIVERY_CONFIRM";
    public const string ActionRefresh = "S1_ORDER_REFRESH_PLAN";

    private readonly ISqlSugarClient _db;
    private readonly UserManager _userManager;
    private readonly OrderWorkOrderGenerationService _workOrderGen;
    private readonly OrderResourceCheckService _resourceCheck;
    private readonly S1MdpSyncTransformService _mdpSync;
    private readonly AidopActionRunLogWriter _runLog;

    public OrderReviewOrchestrationService(
        ISqlSugarClient db,
        UserManager userManager,
        OrderWorkOrderGenerationService workOrderGen,
        OrderResourceCheckService resourceCheck,
        S1MdpSyncTransformService mdpSync,
        AidopActionRunLogWriter runLog)
    {
        _db = db;
        _userManager = userManager;
        _workOrderGen = workOrderGen;
        _resourceCheck = resourceCheck;
        _mdpSync = mdpSync;
        _runLog = runLog;
    }

    public Task<SeOrderReviewExecuteResult> ReviewAsync(IReadOnlyList<long> orderIds) =>
        ExecuteBatchAsync(ActionReview, orderIds, ReviewOneOrderAsync);

    public Task<SeOrderReviewExecuteResult> ConfirmDeliveryAsync(IReadOnlyList<long> orderIds) =>
        ExecuteBatchAsync(ActionConfirm, orderIds, ConfirmOneOrderAsync);

    public Task<SeOrderReviewExecuteResult> RefreshPlanAsync(long orderId, string? reason) =>
        ExecuteSingleAsync(ActionRefresh, orderId, async (order, result, warnings, account) =>
        {
            var entries = await LoadReviewableEntriesAsync(order.Id, order.TenantId, ["3", "0"]);
            if (entries.Count == 0)
                throw Oops.Oh("订单没有可重排的确认/再评审明细行");

            foreach (var entry in entries)
            {
                ValidateEntryForResourceCheck(entry);
                var wo = await _workOrderGen.CreateOrUpdateForEntryAsync(order, entry, account, warnings);
                if (wo.Created) result.WorkOrderCreatedCount++;
                else result.WorkOrderUpdatedCount++;
                result.WorkOrders.Add(wo.WorkOrd);

                var check = await _resourceCheck.RunForEntryAsync(order, entry, wo.WorkOrd, account, warnings);
                result.ResourceCheckCount++;
                result.ResourceCheckLineCount += check.LineCount;
            }

            await UpdateEntriesProgressAsync(entries.Select(e => e.Id).ToList(), "0", account);
            result.EntryCount = entries.Count;
            result.Message = string.IsNullOrWhiteSpace(reason)
                ? "3级计划重排完成"
                : $"3级计划重排完成：{reason.Trim()}";
        });

    private async Task<SeOrderReviewExecuteResult> ExecuteBatchAsync(
        string actionCode,
        IReadOnlyList<long> orderIds,
        Func<OrderWorkOrderGenerationService.OrderHeader, SeOrderReviewExecuteResult, List<string>, string, Task> handler)
    {
        if (orderIds is null || orderIds.Count == 0)
            throw Oops.Oh("至少选择一条订单");

        var tenantId = _userManager.TenantId > 0
            ? _userManager.TenantId
            : AidopTenantHelper.Resolve(App.HttpContext);
        var account = _userManager.Account ?? "system";
        var distinctIds = orderIds.Distinct().ToList();

        var aggregate = new SeOrderReviewExecuteResult
        {
            ActionCode = actionCode,
            OrderCount = distinctIds.Count,
            Message = "执行成功"
        };
        var allWarnings = new List<string>();
        long? firstLogId = null;

        foreach (var orderId in distinctIds)
        {
            var order = await LoadOrderAsync(orderId, tenantId)
                ?? throw Oops.Oh($"订单 {orderId} 不存在或不属于当前租户");

            var runLogId = await _runLog.StartAsync(actionCode, tenantId, "crm_seorder", order.Id, order.BillNo);
            if (firstLogId is null)
                firstLogId = runLogId;

            var perOrder = new SeOrderReviewExecuteResult { ActionCode = actionCode };
            var warnings = new List<string>();

            try
            {
                await _db.Ado.BeginTranAsync();
                await handler(order, perOrder, warnings, account);
                await _db.Ado.CommitTranAsync();

                aggregate.EntryCount += perOrder.EntryCount;
                aggregate.WorkOrderCreatedCount += perOrder.WorkOrderCreatedCount;
                aggregate.WorkOrderUpdatedCount += perOrder.WorkOrderUpdatedCount;
                aggregate.WorkOrderClosedCount += perOrder.WorkOrderClosedCount;
                aggregate.ResourceCheckCount += perOrder.ResourceCheckCount;
                aggregate.ResourceCheckLineCount += perOrder.ResourceCheckLineCount;
                aggregate.WorkOrders.AddRange(perOrder.WorkOrders);
                allWarnings.AddRange(warnings);

                await _runLog.SuccessAsync(runLogId, perOrder.Message, new
                {
                    orderId = order.Id,
                    billNo = order.BillNo,
                    perOrder.EntryCount,
                    perOrder.WorkOrderCreatedCount,
                    perOrder.WorkOrderUpdatedCount,
                    workOrders = perOrder.WorkOrders,
                    warnings
                });
            }
            catch (Exception ex)
            {
                await _db.Ado.RollbackTranAsync();
                await _runLog.FailedAsync(runLogId, ex.Message, new { orderId = order.Id, billNo = order.BillNo });
                throw Oops.Oh(ex.Message);
            }
        }

        aggregate.RunLogId = firstLogId ?? 0;
        aggregate.Warnings = allWarnings.Distinct().ToList();
        aggregate.Message = BuildAggregateMessage(actionCode, aggregate);

        if (actionCode == ActionReview && aggregate.ResourceCheckCount > 0)
            aggregate.Warnings.AddRange(await TryTriggerMdpRefreshAsync());

        return aggregate;
    }

    private async Task<SeOrderReviewExecuteResult> ExecuteSingleAsync(
        string actionCode,
        long orderId,
        Func<OrderWorkOrderGenerationService.OrderHeader, SeOrderReviewExecuteResult, List<string>, string, Task> handler)
    {
        var tenantId = _userManager.TenantId > 0
            ? _userManager.TenantId
            : AidopTenantHelper.Resolve(App.HttpContext);
        var account = _userManager.Account ?? "system";
        var order = await LoadOrderAsync(orderId, tenantId)
            ?? throw Oops.Oh("订单不存在或不属于当前租户");

        var result = new SeOrderReviewExecuteResult
        {
            ActionCode = actionCode,
            OrderCount = 1
        };
        var warnings = new List<string>();
        var runLogId = await _runLog.StartAsync(actionCode, tenantId, "crm_seorder", order.Id, order.BillNo);
        result.RunLogId = runLogId;

        try
        {
            await _db.Ado.BeginTranAsync();
            await handler(order, result, warnings, account);
            await _db.Ado.CommitTranAsync();

            result.Warnings = warnings;
            result.Message = BuildSingleMessage(result);
            await _runLog.SuccessAsync(runLogId, result.Message, new
            {
                orderId = order.Id,
                billNo = order.BillNo,
                result.EntryCount,
                result.WorkOrderCreatedCount,
                result.WorkOrderUpdatedCount,
                workOrders = result.WorkOrders,
                warnings
            });

            if (actionCode == ActionRefresh && result.ResourceCheckCount > 0)
                result.Warnings.AddRange(await TryTriggerMdpRefreshAsync());

            return result;
        }
        catch (Exception ex)
        {
            await _db.Ado.RollbackTranAsync();
            await _runLog.FailedAsync(runLogId, ex.Message, new { orderId = order.Id, billNo = order.BillNo });
            throw Oops.Oh(ex.Message);
        }
    }

    private async Task ReviewOneOrderAsync(
        OrderWorkOrderGenerationService.OrderHeader order,
        SeOrderReviewExecuteResult result,
        List<string> warnings,
        string account)
    {
        var entries = await LoadReviewableEntriesAsync(order.Id, order.TenantId, ["1", "0", "2"]);
        if (entries.Count == 0)
            throw Oops.Oh($"订单 {order.BillNo} 没有可评审的明细行（须为新建,评审,再评审状态）");

        var reviewedEntryIds = new List<long>();

        foreach (var entry in entries)
        {
            ValidateEntryForResourceCheck(entry);
            if (entry.PlanDate is null)
                throw Oops.Oh($"订单行 {entry.EntrySeq} 缺少客户要求交期（plan_date）");

            // 1. 先做资源检查（纯 BOM 展开 + 库存计算，不依赖工单）
            var (check, lines) = await _resourceCheck.CheckOnlyAsync(order, entry, warnings);
            result.ResourceCheckCount++;
            result.ResourceCheckLineCount += check.LineCount;

            // 2. 有缺料 → 才生成工单并写入资源检查结果；库存可满足则跳过工单
            if (check.HasShortage)
            {
                var wo = await _workOrderGen.CreateOrUpdateForEntryAsync(order, entry, account, warnings);
                if (wo.Created) result.WorkOrderCreatedCount++;
                else result.WorkOrderUpdatedCount++;
                result.WorkOrders.Add(wo.WorkOrd);

                await _resourceCheck.WriteResultAsync(order, entry, wo.WorkOrd, lines, account);
                warnings.Add($"订单行 {entry.EntrySeq} 存在缺料（工单 {wo.WorkOrd}）");
            }
            else
            {
                // 3. 不缺料 → 若之前已生成工单则关闭（Status='C', IsActive=0）
                var closedCount = await CloseExistingWorkOrdersAsync(entry.TenantId, entry.Id, account);
                if (closedCount > 0)
                {
                    result.WorkOrderClosedCount += closedCount;
                    warnings.Add($"订单行 {entry.EntrySeq} 库存可满足，已关闭 {closedCount} 个历史工单");
                }
            }

            reviewedEntryIds.Add(entry.Id);
        }

        // 3. 所有明细行处理完毕后，批量更新 progress = '2'
        await UpdateEntriesProgressAsync(reviewedEntryIds, "2", account);

        result.EntryCount = entries.Count;
        result.Message = $"订单 {order.BillNo} 评审完成（资源检查 {result.ResourceCheckCount} 条）";
    }

    private async Task ConfirmOneOrderAsync(
        OrderWorkOrderGenerationService.OrderHeader order,
        SeOrderReviewExecuteResult result,
        List<string> warnings,
        string account)
    {
        var entries = await LoadReviewableEntriesAsync(order.Id, order.TenantId, ["2"]);
        if (entries.Count == 0)
            throw Oops.Oh($"订单 {order.BillNo} 没有处于评审状态的明细行，请先完成订单评审");

        foreach (var entry in entries)
        {
            var woCnt = await _db.Ado.GetIntAsync(
                """
                SELECT COUNT(*) FROM WorkOrdMaster
                WHERE tenant_id = @TenantId AND BusinessID = @EntryId
                  AND LOWER(TRIM(IFNULL(Status,''))) <> 'c'
                """,
                new SugarParameter("@TenantId", entry.TenantId),
                new SugarParameter("@EntryId", entry.Id));

            // 无活跃工单：可能从未生成（库存可满足）或已关闭 → 仍允许交期确认
            var confirmDate = entry.SysCapacityDate ?? entry.PlanDate;
            await UpdateEntryAfterConfirmAsync(entry.Id, confirmDate, account);
            result.EntryCount++;

            if (woCnt > 0)
                result.WorkOrders.Add(await LoadWorkOrdForEntryAsync(entry.TenantId, entry.Id));
            else
                warnings.Add($"订单行 {entry.EntrySeq} 无活跃工单（库存可满足或已关闭），已直接确认交期");
        }

        result.WorkOrders = result.WorkOrders.Where(x => !string.IsNullOrWhiteSpace(x)).Distinct().ToList();
        result.Message = $"订单 {order.BillNo} 交期确认完成";
    }

    private async Task<string> LoadWorkOrdForEntryAsync(long tenantId, long entryId)
    {
        var rows = await _db.Ado.SqlQueryAsync<string>(
            """
            SELECT WorkOrd FROM WorkOrdMaster
            WHERE tenant_id = @TenantId AND BusinessID = @EntryId
            ORDER BY RecID DESC LIMIT 1
            """,
            new SugarParameter("@TenantId", tenantId),
            new SugarParameter("@EntryId", entryId));
        return rows.FirstOrDefault() ?? string.Empty;
    }

    /// <summary>
    /// 关闭指定订单行已有的未关闭工单（WorkOrdMaster.Status='C', IsActive=0；mes_morder.morder_state='关闭'）。
    /// 返回被关闭的工单数量。
    /// </summary>
    private async Task<int> CloseExistingWorkOrdersAsync(long tenantId, long entryId, string account)
    {
        // 查找该订单行下所有未关闭的工单号
        var openWorkOrds = await _db.Ado.SqlQueryAsync<string>(
            """
            SELECT WorkOrd FROM WorkOrdMaster
            WHERE tenant_id = @TenantId AND BusinessID = @EntryId
              AND LOWER(TRIM(IFNULL(Status,''))) <> 'c'
              AND IFNULL(IsActive, 0) = 1
            """,
            new SugarParameter("@TenantId", tenantId),
            new SugarParameter("@EntryId", entryId));

        if (openWorkOrds.Count == 0) return 0;

        var workOrdList = string.Join(",", openWorkOrds.Select(w => $"'{w}'"));
        var now = DateTime.Now;

        // 关闭 WorkOrdMaster
        await _db.Ado.ExecuteCommandAsync(
            $"""
            UPDATE WorkOrdMaster
            SET Status = 'C', IsActive = 0,
                UpdateUser = @User, UpdateTime = @Now
            WHERE tenant_id = @TenantId AND BusinessID = @EntryId
              AND LOWER(TRIM(IFNULL(Status,''))) <> 'c'
              AND IFNULL(IsActive, 0) = 1
            """,
            new SugarParameter("@TenantId", tenantId),
            new SugarParameter("@EntryId", entryId),
            new SugarParameter("@User", account),
            new SugarParameter("@Now", now));

        // 同步关闭 mes_morder
        await _db.Ado.ExecuteCommandAsync(
            $"""
            UPDATE mes_morder
            SET morder_state = '关闭',
                update_by_name = @User, update_time = @Now
            WHERE tenant_id = @TenantId AND morder_no IN ({workOrdList})
              AND IFNULL(morder_state, '') <> '关闭'
            """,
            new SugarParameter("@TenantId", tenantId),
            new SugarParameter("@User", account),
            new SugarParameter("@Now", now));

        return openWorkOrds.Count;
    }

    private static void ValidateEntryForResourceCheck(OrderWorkOrderGenerationService.OrderEntryLine entry)
    {
        if (string.IsNullOrWhiteSpace(entry.ItemNumber))
            throw Oops.Oh($"订单行 {entry.EntrySeq} 物料编码不能为空");
        if (entry.Qty is null or <= 0)
            throw Oops.Oh($"订单行 {entry.EntrySeq} 数量必须大于 0");
        if (entry.PlanDate is null && entry.SysCapacityDate is null)
            throw Oops.Oh($"订单行 {entry.EntrySeq} 缺少计划交期");
    }

    private async Task<OrderWorkOrderGenerationService.OrderHeader?> LoadOrderAsync(long orderId, long tenantId)
    {
        var rows = await _db.Ado.SqlQueryAsync<OrderWorkOrderGenerationService.OrderHeader>(
            """
            SELECT Id, bill_no AS BillNo, custom_no AS CustomNo, urgent AS Urgent,
                   factory_id AS FactoryId, tenant_id AS TenantId
            FROM crm_seorder
            WHERE Id = @Id AND tenant_id = @TenantId AND IsDeleted = 0
            LIMIT 1
            """,
            new SugarParameter("@Id", orderId),
            new SugarParameter("@TenantId", tenantId));
        return rows.FirstOrDefault();
    }

    private async Task<List<OrderWorkOrderGenerationService.OrderEntryLine>> LoadReviewableEntriesAsync(
        long orderId,
        long tenantId,
        IReadOnlyList<string> progressList)
    {
        if (progressList.Count == 0)
            return new List<OrderWorkOrderGenerationService.OrderEntryLine>();

        var inClause = string.Join(", ", progressList.Select((_, i) => $"@P{i}"));
        var pars = new List<SugarParameter>
        {
            new("@OrderId", orderId),
            new("@TenantId", tenantId)
        };
        for (var i = 0; i < progressList.Count; i++)
            pars.Add(new SugarParameter($"@P{i}", progressList[i]));

        return await _db.Ado.SqlQueryAsync<OrderWorkOrderGenerationService.OrderEntryLine>(
            $"""
            SELECT
                Id, seorder_id AS SeOrderId, bill_no AS BillNo, entry_seq AS EntrySeq,
                item_number AS ItemNumber, item_name AS ItemName, specification AS Specification,
                unit AS Unit, bom_number AS BomNumber, qty AS Qty,
                plan_date AS PlanDate, sys_capacity_date AS SysCapacityDate,
                progress AS Progress, urgent AS Urgent,
                factory_id AS FactoryId, company_id AS CompanyId, tenant_id AS TenantId
            FROM crm_seorderentry
            WHERE seorder_id = @OrderId AND tenant_id = @TenantId AND IsDeleted = 0
              AND COALESCE(NULLIF(progress, ''), '1') IN ({inClause})
            ORDER BY entry_seq, Id
            """,
            pars);
    }

    private async Task UpdateEntryAfterReviewAsync(long entryId, DateTime? capacityDate, string account)
    {
        await _db.Ado.ExecuteCommandAsync(
            """
            UPDATE crm_seorderentry
            SET progress = '2',
                sys_capacity_date = COALESCE(sys_capacity_date, @CapacityDate),
                update_time = @Now
            WHERE Id = @Id AND IsDeleted = 0
            """,
            new SugarParameter("@CapacityDate", capacityDate ?? (object)DBNull.Value),
            new SugarParameter("@Now", DateTime.Now),
            new SugarParameter("@Id", entryId));
    }

    private async Task UpdateEntryAfterConfirmAsync(long entryId, DateTime? confirmDate, string account)
    {
        await _db.Ado.ExecuteCommandAsync(
            """
            UPDATE crm_seorderentry
            SET progress = '3',
                date = COALESCE(date, @ConfirmDate),
                update_time = @Now
            WHERE Id = @Id AND IsDeleted = 0
            """,
            new SugarParameter("@ConfirmDate", confirmDate ?? (object)DBNull.Value),
            new SugarParameter("@Now", DateTime.Now),
            new SugarParameter("@Id", entryId));
    }

    private async Task UpdateEntriesProgressAsync(IReadOnlyList<long> entryIds, string progress, string account)
    {
        if (entryIds.Count == 0) return;
        var idList = string.Join(",", entryIds);
        await _db.Ado.ExecuteCommandAsync(
            $"""
            UPDATE crm_seorderentry
            SET progress = @Progress, update_time = @Now
            WHERE Id IN ({idList}) AND IsDeleted = 0
            """,
            new SugarParameter("@Progress", progress),
            new SugarParameter("@Now", DateTime.Now));
    }

    private static string BuildAggregateMessage(string actionCode, SeOrderReviewExecuteResult r)
    {
        var woPart = r.WorkOrders.Count > 0
            ? $"，工单：{string.Join("、", r.WorkOrders.Distinct())}"
            : string.Empty;
        var closedPart = r.WorkOrderClosedCount > 0
            ? $"、关闭 {r.WorkOrderClosedCount}"
            : string.Empty;
        return actionCode switch
        {
            ActionReview => $"评审完成 {r.OrderCount} 单、{r.EntryCount} 行，新建工单 {r.WorkOrderCreatedCount}、更新 {r.WorkOrderUpdatedCount}{closedPart}、资源检查 {r.ResourceCheckCount} 条{woPart}",
            ActionConfirm => $"交期确认完成 {r.OrderCount} 单、{r.EntryCount} 行{woPart}",
            _ => r.Message
        };
    }

    private static string BuildSingleMessage(SeOrderReviewExecuteResult r)
    {
        if (r.WorkOrders.Count == 0)
            return r.Message;
        return $"{r.Message}，工单：{string.Join("、", r.WorkOrders.Distinct())}";
    }

    private async Task<List<string>> TryTriggerMdpRefreshAsync()
    {
        var warnings = new List<string>();
        try
        {
            await _mdpSync.RunFullAsync(triggerType: "ORDER_REVIEW");
        }
        catch (Exception ex)
        {
            warnings.Add($"S1 MDP/DWD 刷新未完成：{ex.Message}");
        }
        return warnings;
    }

}