using System;
using System.Collections.Generic;
using System.Threading;
using TeamAAS.FlowEditor.Models;
using TeamAAS.FlowEditor.Plugins;
using Plugins.Halcon.Models;

namespace Plugins.Halcon
{
    // ─────────────────────────────────────────────────────────────────────
    // HALCON 逻辑判断分类算子（从主程序集迁入分类 DLL）。
    // 显示名/类型全名保持不变 —— 工具箱、流程文件、公式绑定全部兼容。
    // ─────────────────────────────────────────────────────────────────────

    /// <summary>H条件判断：对若干「左值 运算符 右值」条件求值，命中则执行对应后继节点（分支）。</summary>
    [Serializable]
    [Plugin("H条件判断", PluginCategory.Halocn模块, typeof(HalconIfModel), "CallSplit",
        NodeShape = NodeCategory.Decision, IsSubFlowNode = true, VisionCategory = VisionPlugin.其他,
        Description = "逻辑判断：按数值条件命中分支，执行对应后继节点（如 面积>阈值 走 OK 分支）")]
    public class HalconIfPlugin : BasePlugin<HalconIfModel>
    {
        public override List<OutputField> DeclareOutputs()
        {
            var list = new List<OutputField>
            {
                new OutputField("结果", typeof(bool)),
                new OutputField("执行分支数", typeof(int)),
            };
            int n = Model?.Conditions?.Count ?? 0;
            for (int i = 1; i <= n; i++)
                list.Add(new OutputField($"[分支]执行流程{i}", typeof(string)));
            return list;
        }

        public override NodeRunStatus PluginRun(CancellationToken token, out Dictionary<string, object> results)
        {
            var res = new Dictionary<string, object>();
            results = res;
            BranchTargets = new List<string>();
            int index = 0;
            try
            {
                var conditions = Model.Conditions ?? new List<HalconCondition>();
                Log(3, $"开始条件判断，共 {conditions.Count} 个条件");
                for (int i = 0; i < conditions.Count; i++)
                {
                    var c = conditions[i];
                    double left = ToDouble(GetResolve(c.Left));
                    bool ok = Compare(left, c.Op, c.Right);
                    Log(4, $"条件{i + 1}: {left:F3} {c.Op} {c.Right:F3} = {ok} → 目标[{c.TargetNodeName}]");
                    if (ok && !string.IsNullOrWhiteSpace(c.TargetNodeName))
                    {
                        BranchTargets.Add(c.TargetNodeName);
                        res[$"[分支]执行流程{index + 1}"] = c.TargetNodeName;
                        index++;
                    }
                }
                res["执行分支数"] = index;
                res["结果"] = index > 0;
                if (index == 0)
                {
                    res["Error"] = "无命中分支";
                    Log(1, "条件判断无任何分支命中", TeamAAS.LogLevel.Warning);
                    return NodeRunStatus.Failed;
                }
                Log(2, $"条件判断命中 {index} 个分支: {string.Join(", ", BranchTargets)}");
                return NodeRunStatus.Success;
            }
            catch (Exception ex)
            {
                res["Error"] = ex.Message;
                res["结果"] = false;
                Log(1, $"条件判断异常: {ex.Message}", TeamAAS.LogLevel.Error);
                return NodeRunStatus.Failed;
            }
        }

        private static double ToDouble(object v)
        {
            if (v == null) return 0d;
            try { return Convert.ToDouble(v); }
            catch { return 0d; }
        }

        private static bool Compare(double left, HalconCompareOp op, double right)
        {
            switch (op)
            {
                case HalconCompareOp.大于: return left > right;
                case HalconCompareOp.大于等于: return left >= right;
                case HalconCompareOp.小于: return left < right;
                case HalconCompareOp.小于等于: return left <= right;
                case HalconCompareOp.等于: return Math.Abs(left - right) < 1e-9;
                case HalconCompareOp.不等于: return Math.Abs(left - right) >= 1e-9;
                default: return false;
            }
        }
    }
}

namespace Plugins.Halcon.Models
{
    using PropertyGridLib.Attributes;
    using PropertyGridLib.Controls;
    using System.ComponentModel;
    using TeamAAS.FlowEditor.Plugins;
    using TeamAAS.FlowEngine.FormulaData;

    /// <summary>Halcon 条件判断：对若干「左值 运算符 右值」条件求值，命中则跳到对应后继节点（分支）。</summary>
    [Serializable]
    public class HalconIfModel : HalconOperatorModelBase
    {
        [Category("属性")]
        [DisplayName("1.条件集合")]
        [Description("按顺序判定每个条件，命中的分支对应后继节点会被执行（可命中多个）")]
        [CollectionEditor(CanAdd = true, CanRemove = true, CanSort = true)]
        public List<HalconCondition> Conditions { get; set; } = new List<HalconCondition>();
    }

    [Serializable]
    public class HalconCondition
    {
        public HalconCondition()
        {
            Left = new FormulaBound<object>();
        }

        [Category("条件")]
        [DisplayName("1.左值")]
        [Description("从子流程前序节点输出中选择（如 &{区域特征1.面积}）")]
        [FormulaEditor(typeof(PluginDataProvider))]
        public FormulaBound<object> Left { get; set; }

        [Category("条件")]
        [DisplayName("2.运算符")]
        [Description("左值与右值的比较方式")]
        public HalconCompareOp Op { get; set; } = HalconCompareOp.大于;

        [Category("条件")]
        [DisplayName("3.右值")]
        [Description("比较阈值（数值）")]
        public double Right { get; set; } = 0;

        [Category("条件")]
        [DisplayName("4.执行节点名")]
        [Description("条件命中时要执行的后继节点的「节点名称」（须与本判断节点相连）")]
        public string TargetNodeName { get; set; } = "";

        public override string ToString() => $"{Left?.Formula ?? ""} {Op} {Right} → {TargetNodeName}";
    }

    [Serializable]
    public enum HalconCompareOp
    {
        大于 = 0,
        大于等于 = 1,
        小于 = 2,
        小于等于 = 3,
        等于 = 4,
        不等于 = 5,
    }
}