using System.Diagnostics;
using System.Text.Json;
using Admin.NET.Core;
using Admin.NET.Plugin.AiDOP.Service;
using Admin.NET.Plugin.ApprovalFlow;
using Admin.NET.Plugin.ApprovalFlow.Service;
using Yitter.IdGenerator;
using ApprovalFlowEntity = Admin.NET.Plugin.ApprovalFlow.ApprovalFlow;

namespace Admin.NET.Plugin.AiDOP.Infrastructure;

/// <summary>
/// 智慧诊断改善计划正式审批流与角色基线。
/// </summary>
public static class AidopImprovementApprovalSeed
{
    public static void EnsureSeed(ISqlSugarClient db)
    {
        try
        {
            db.CodeFirst.InitTables(
                typeof(ApprovalBizType),
                typeof(ApprovalFlowEntity),
                typeof(ApprovalFlowVersion));
            EnsureBizType(db);
            EnsureBaselineRoles(db);
            EnsurePublishedFlow(db);
        }
        catch (Exception ex)
        {
            Trace.TraceWarning("Ai-DOP improvement approval seed: " + ex);
        }
    }

    public static void EnsureBaselineRoles(ISqlSugarClient db, long? onlyTenantId = null)
    {
        var tenantIds = onlyTenantId is > 0
            ? new List<long> { onlyTenantId.Value }
            : db.Queryable<SysTenant>()
                .ClearFilter<ITenantIdFilter>()
                .Where(x => x.Id > 1 && x.Id != SqlSugarConst.DefaultTenantId)
                .Select(x => x.Id)
                .ToList();

        var now = DateTime.Now;
        foreach (var tenantId in tenantIds.Where(x => x > 1 && x != SqlSugarConst.DefaultTenantId).Distinct())
        {
            foreach (var (code, name, orderNo) in SmartOpsImprovementApprovalRules.BaselineRoles)
            {
                var exists = db.Queryable<SysRole>()
                    .ClearFilter<ITenantIdFilter>()
                    .Any(r => r.TenantId == tenantId && r.Code == code);
                if (exists) continue;

                db.Insertable(new SysRole
                {
                    Id = YitIdHelper.NextId(),
                    TenantId = tenantId,
                    Name = name,
                    Code = code,
                    OrderNo = orderNo,
                    DataScope = DataScopeEnum.Self,
                    Status = StatusEnum.Enable,
                    Remark = "智慧诊断改善计划审批角色基线",
                    CreateTime = now,
                }).ExecuteCommand();
            }
        }
    }

    private static void EnsureBizType(ISqlSugarClient db)
    {
        var exists = db.Queryable<ApprovalBizType>()
            .Any(x => x.Code == SmartOpsImprovementBizHandler.BizTypeCode);
        if (exists) return;

        db.Insertable(new ApprovalBizType
        {
            Id = YitIdHelper.NextId(),
            Code = SmartOpsImprovementBizHandler.BizTypeCode,
            Name = "智慧诊断改善计划",
            Remark = "智慧运营诊断问题生成的改善计划审批",
            IsEnabled = true,
            CreateTime = DateTime.Now,
            UpdateTime = DateTime.Now,
        }).ExecuteCommand();
    }

    private static void EnsurePublishedFlow(ISqlSugarClient db)
    {
        var orgIds = db.Queryable<SysOrg>()
            .Select(x => x.Id)
            .ToList()
            .Where(x => x > 0)
            .Distinct()
            .ToList();
        if (orgIds.Count == 0) orgIds.Add(0);

        var now = DateTime.Now;
        var flowJson = BuildFormalFlowJson();
        foreach (var orgId in orgIds)
        {
            var existing = db.Queryable<ApprovalFlowEntity>()
                .Where(x => x.BizType == SmartOpsImprovementBizHandler.BizTypeCode && x.OrgId == orgId && !x.IsDelete)
                .OrderByDescending(x => x.IsPublished)
                .OrderByDescending(x => x.Version)
                .First();

            if (existing == null)
            {
                InsertFlow(db, orgId, flowJson, 2, now);
                continue;
            }

            if (!SmartOpsImprovementApprovalRules.IsLegacyInitiatorFallback(existing.FlowJson)
                && existing.FlowJson != null
                && existing.FlowJson.Contains(SmartOpsImprovementApprovalRules.DeptHeadRole, StringComparison.Ordinal))
            {
                if (!existing.IsPublished)
                {
                    existing.IsPublished = true;
                    existing.UpdateTime = now;
                    db.Updateable(existing).ExecuteCommand();
                }
                continue;
            }

            existing.FlowJson = flowJson;
            existing.Version = Math.Max(existing.Version, 1) + 1;
            existing.IsPublished = true;
            existing.Status = 1;
            existing.Remark = "正式流程：黄/红/跨部门网关，按角色解析审批人";
            existing.UpdateTime = now;
            db.Updateable(existing).ExecuteCommand();
            db.Insertable(new ApprovalFlowVersion
            {
                Id = YitIdHelper.NextId(),
                FlowId = existing.Id,
                Version = existing.Version,
                FlowJson = existing.FlowJson,
                FormJson = existing.FormJson,
                PublishTime = now,
                PublisherName = "系统升级",
                CreateTime = now,
                UpdateTime = now,
            }).ExecuteCommand();
        }
    }

    private static void InsertFlow(ISqlSugarClient db, long orgId, string flowJson, int version, DateTime now)
    {
        var flow = new ApprovalFlowEntity
        {
            Id = YitIdHelper.NextId(),
            Code = $"SOI_{orgId}",
            Name = "智慧诊断改善计划审批",
            BizType = SmartOpsImprovementBizHandler.BizTypeCode,
            FormJson = "{}",
            FlowJson = flowJson,
            Status = 1,
            Remark = "正式流程：黄/红/跨部门网关，按角色解析审批人",
            Version = version,
            IsPublished = true,
            OrgId = orgId,
            CreateTime = now,
            UpdateTime = now,
        };
        db.Insertable(flow).ExecuteCommand();
        db.Insertable(new ApprovalFlowVersion
        {
            Id = YitIdHelper.NextId(),
            FlowId = flow.Id,
            Version = flow.Version,
            FlowJson = flow.FlowJson,
            FormJson = flow.FormJson,
            PublishTime = now,
            PublisherName = "系统初始化",
            CreateTime = now,
            UpdateTime = now,
        }).ExecuteCommand();
    }

    public static string BuildFormalFlowJson()
    {
        var item = new ApprovalFlowItem
        {
            Nodes = new List<ApprovalFlowNodeItem>
            {
                Node("start", "bpmn:startEvent", 80, 200, "开始"),
                new()
                {
                    Id = "routeGw",
                    Type = "bpmn:exclusiveGateway",
                    X = 220,
                    Y = 200,
                    Properties = new FlowProperties
                    {
                        NodeName = "问题分级",
                        Conditions = new List<GatewayCondition>
                        {
                            new() { TargetNodeId = "deptHeadYellow", Expression = "route == yellow", Label = "黄色" },
                            new() { TargetNodeId = "deptHeadRed", Expression = "route == red", Label = "红色" },
                            new() { TargetNodeId = "deptHeadGlobal", Expression = "", Label = "跨部门/S9", IsDefault = true },
                        },
                    },
                    Text = new FlowTextItem { X = 220, Y = 234, Value = "问题分级" },
                },
                RoleNode("deptHeadYellow", 420, 80, "责任部门负责人", SmartOpsImprovementApprovalRules.DeptHeadRole),
                RoleNode("deptHeadRed", 420, 200, "责任部门负责人", SmartOpsImprovementApprovalRules.DeptHeadRole),
                RoleNode("opsRed", 620, 200, "运营负责人", SmartOpsImprovementApprovalRules.OpsOwnerRole),
                RoleNode("deptHeadGlobal", 420, 320, "责任部门负责人", SmartOpsImprovementApprovalRules.DeptHeadRole),
                RoleNode("moduleGlobal", 620, 320, "模块负责人", SmartOpsImprovementApprovalRules.ModuleOwnerRole),
                RoleNode("opsGlobal", 820, 320, "运营负责人", SmartOpsImprovementApprovalRules.OpsOwnerRole),
                Node("end", "bpmn:endEvent", 1020, 200, "结束"),
            },
            Edges = new List<ApprovalFlowEdgeItem>
            {
                BuildEdge("e-start-gw", "start", "routeGw", 120, 200, 180, 200),
                BuildEdge("e-gw-y", "routeGw", "deptHeadYellow", 250, 180, 380, 80),
                BuildEdge("e-gw-r", "routeGw", "deptHeadRed", 260, 200, 380, 200),
                BuildEdge("e-gw-g", "routeGw", "deptHeadGlobal", 250, 220, 380, 320),
                BuildEdge("e-y-end", "deptHeadYellow", "end", 460, 80, 980, 180),
                BuildEdge("e-r-ops", "deptHeadRed", "opsRed", 460, 200, 580, 200),
                BuildEdge("e-ops-end", "opsRed", "end", 660, 200, 980, 200),
                BuildEdge("e-g-mod", "deptHeadGlobal", "moduleGlobal", 460, 320, 580, 320),
                BuildEdge("e-mod-ops", "moduleGlobal", "opsGlobal", 660, 320, 780, 320),
                BuildEdge("e-gops-end", "opsGlobal", "end", 860, 320, 980, 220),
            }
        };
        return JsonSerializer.Serialize(item);
    }

    private static ApprovalFlowNodeItem Node(string id, string type, float x, float y, string name) => new()
    {
        Id = id,
        Type = type,
        X = x,
        Y = y,
        Properties = new FlowProperties { NodeName = name },
        Text = new FlowTextItem { X = x, Y = y + 34, Value = name },
    };

    private static ApprovalFlowNodeItem RoleNode(string id, float x, float y, string name, string roleCode) => new()
    {
        Id = id,
        Type = "bpmn:userTask",
        X = x,
        Y = y,
        Properties = new FlowProperties
        {
            NodeName = name,
            ApproverType = nameof(ApproverTypeEnum.Role),
            ApproverIds = roleCode,
            ApproverNames = name,
            MultiApproveMode = "Any",
            TimeoutHours = 72,
            TimeoutAction = "Notify",
        },
        Text = new FlowTextItem { X = x, Y = y + 34, Value = name },
    };

    private static ApprovalFlowEdgeItem BuildEdge(string id, string source, string target, float sx, float sy, float ex, float ey)
    {
        return new ApprovalFlowEdgeItem
        {
            Id = id,
            Type = "bpmn:sequenceFlow",
            SourceNodeId = source,
            TargetNodeId = target,
            StartPoint = new FlowEdgePointItem { X = sx, Y = sy },
            EndPoint = new FlowEdgePointItem { X = ex, Y = ey },
            Properties = new FlowProperties(),
            PointsList = new List<FlowEdgePointItem>
            {
                new() { X = sx, Y = sy },
                new() { X = ex, Y = ey },
            },
        };
    }
}