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

namespace Plugins.Halcon
{
    // ─────────────────────────────────────────────────────────────────────
    // HALCON 图像处理分类算子（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阈值分割：提取灰度落在 [最小,最大] 区间的像素为区域。</summary>
    [Serializable]
    [Plugin("H阈值分割", PluginCategory.Halocn模块, typeof(HalconThresholdModel), "FilterOutline",
        NodeShape = NodeCategory.Normal, IsSubFlowNode = true, VisionCategory = VisionPlugin.图像处理,
        Description = "灰度阈值分割：把灰度∈[最小,最大]的像素提取为区域")]
    public class HalconThresholdPlugin : BasePlugin<HalconThresholdModel>
    {
        public override List<OutputField> DeclareOutputs() => new List<OutputField>
        {
            new OutputField("区域", typeof(object)),
            new OutputField("结果", typeof(bool)),
        };

        public override NodeRunStatus PluginRun(CancellationToken token, out Dictionary<string, object> results)
        {
            var res = new Dictionary<string, object>();
            results = res;
            NodeRunStatus Fail(string m) { res["Error"] = m; res["结果"] = false; Log(1, $"阈值分割失败: {m}", TeamAAS.LogLevel.Error); return NodeRunStatus.Failed; }
            bool owned = false;
            HObject image = null;
            try
            {
                var src = GetResolve(Model.ImageSource);
                if (src == null) return Fail("未获取到输入图像（请绑定「输入图像」，例如 &{输入.图像}）");
                owned = !(src is HObject);
                image = HalconRuntime.ToHObject(src);

                Log(3, $"阈值分割：灰度区间[{Model.MinGray}, {Model.MaxGray}]");
                var region = HalconRuntime.Threshold(image, Model.MinGray, Model.MaxGray);
                res["区域"] = region;
                res["结果"] = true;
                HalconEditorPreview.Show(Model, src, region, "red");   // 图层发布 + 编辑器预览：底图 + 阈值区域叠加
                Log(2, $"阈值分割完成，区域对象数={HalconRuntime.CountObj(region)}");
                return NodeRunStatus.Success;
            }
            catch (Exception ex) { return Fail(ex.Message); }
            finally { if (owned) HalconRuntime.Dispose(image); }
        }
    }

    /// <summary>H连通域：把一个区域拆成互不相连的多个独立区域。</summary>
    [Serializable]
    [Plugin("H连通域", PluginCategory.Halocn模块, typeof(HalconConnectionModel), "VectorSquare",
        NodeShape = NodeCategory.Normal, IsSubFlowNode = true, VisionCategory = VisionPlugin.图像处理,
        Description = "连通域拆分：把一个区域拆成多个独立区域，输出区域集与数量")]
    public class HalconConnectionPlugin : BasePlugin<HalconConnectionModel>
    {
        public override List<OutputField> DeclareOutputs() => new List<OutputField>
        {
            new OutputField("区域集", typeof(object)),
            new OutputField("数量", typeof(int)),
            new OutputField("结果", typeof(bool)),
        };

        public override NodeRunStatus PluginRun(CancellationToken token, out Dictionary<string, object> results)
        {
            var res = new Dictionary<string, object>();
            results = res;
            NodeRunStatus Fail(string m) { res["Error"] = m; res["结果"] = false; Log(1, $"连通域失败: {m}", TeamAAS.LogLevel.Error); return NodeRunStatus.Failed; }
            try
            {
                var src = GetResolve(Model.RegionSource);
                if (!(src is HObject region)) return Fail("未获取到输入区域（请绑定上游「区域」输出）");

                var connected = HalconRuntime.Connection(region);
                int n = HalconRuntime.CountObj(connected);
                res["区域集"] = connected;
                res["数量"] = n;
                res["结果"] = true;
                HalconEditorPreview.Show(Model, null, connected, "yellow");   // 只更新叠加区域，保留底图
                Log(2, $"连通域拆分完成，得到 {n} 个独立区域");
                return NodeRunStatus.Success;
            }
            catch (Exception ex) { return Fail(ex.Message); }
        }
    }

    /// <summary>H图像预处理：滤波 / 灰度线性变换 / 转灰度。</summary>
    [Serializable]
    [Plugin("H图像预处理", PluginCategory.Halocn模块, typeof(HalconPreprocessModel), "Blur",
        NodeShape = NodeCategory.Normal, IsSubFlowNode = true, VisionCategory = VisionPlugin.图像处理,
        Description = "图像预处理：均值/中值/高斯滤波、灰度线性变换、转灰度")]
    public class HalconPreprocessPlugin : BasePlugin<HalconPreprocessModel>
    {
        public override List<OutputField> DeclareOutputs() => new List<OutputField>
        {
            new OutputField("图像", typeof(object)),
            new OutputField("结果", typeof(bool)),
        };

        public override NodeRunStatus PluginRun(CancellationToken token, out Dictionary<string, object> results)
        {
            var res = new Dictionary<string, object>();
            results = res;
            NodeRunStatus Fail(string m) { res["Error"] = m; res["结果"] = false; Log(1, $"图像预处理失败: {m}", TeamAAS.LogLevel.Error); return NodeRunStatus.Failed; }
            bool owned = false;
            HObject image = null;
            try
            {
                var src = GetResolve(Model.ImageSource);
                if (src == null) return Fail("未获取到输入图像（请绑定「输入图像」）");
                owned = !(src is HObject);
                image = HalconRuntime.ToHObject(src);

                HObject outImg;
                switch (Model.ProcessType)
                {
                    case HalconPreprocessType.均值滤波:
                        outImg = HalconRuntime.MeanImage(image, Model.Param1, Model.Param2 > 0 ? Model.Param2 : Model.Param1);
                        break;
                    case HalconPreprocessType.中值滤波:
                        outImg = HalconRuntime.MedianImage(image, "circle", Model.Param1, "mirrored");
                        break;
                    case HalconPreprocessType.高斯滤波:
                        outImg = HalconRuntime.GaussFilter(image, Model.Param1);
                        break;
                    case HalconPreprocessType.灰度线性变换:
                        outImg = HalconRuntime.ScaleImage(image, Model.Param1, Model.Param2);
                        break;
                    case HalconPreprocessType.转灰度:
                        outImg = HalconRuntime.RgbToGray(image);
                        break;
                    default:
                        return Fail($"未知处理方式：{Model.ProcessType}");
                }

                res["图像"] = outImg;
                res["结果"] = true;
                HalconEditorPreview.Show(Model, outImg, null);   // 图层发布：处理后的图像作底图
                Log(2, $"图像预处理完成：{Model.ProcessType}");
                return NodeRunStatus.Success;
            }
            catch (Exception ex) { return Fail(ex.Message); }
            finally { if (owned) HalconRuntime.Dispose(image); }
        }
    }

    /// <summary>H形态学：对区域做膨胀/腐蚀/开/闭运算。</summary>
    [Serializable]
    [Plugin("H形态学", PluginCategory.Halocn模块, typeof(HalconMorphologyModel), "ArrowExpandAll",
        NodeShape = NodeCategory.Normal, IsSubFlowNode = true, VisionCategory = VisionPlugin.图像处理,
        Description = "形态学：膨胀/腐蚀/开运算/闭运算（圆形结构元）")]
    public class HalconMorphologyPlugin : BasePlugin<HalconMorphologyModel>
    {
        public override List<OutputField> DeclareOutputs() => new List<OutputField>
        {
            new OutputField("区域", typeof(object)),
            new OutputField("结果", typeof(bool)),
        };

        public override NodeRunStatus PluginRun(CancellationToken token, out Dictionary<string, object> results)
        {
            var res = new Dictionary<string, object>();
            results = res;
            NodeRunStatus Fail(string m) { res["Error"] = m; res["结果"] = false; Log(1, $"形态学失败: {m}", TeamAAS.LogLevel.Error); return NodeRunStatus.Failed; }
            try
            {
                var src = GetResolve(Model.RegionSource);
                if (!(src is HObject region)) return Fail("未获取到输入区域（请绑定上游「区域」输出）");

                HObject outRegion;
                switch (Model.Operation)
                {
                    case HalconMorphOperation.膨胀: outRegion = HalconRuntime.DilationCircle(region, Model.Radius); break;
                    case HalconMorphOperation.腐蚀: outRegion = HalconRuntime.ErosionCircle(region, Model.Radius); break;
                    case HalconMorphOperation.开运算: outRegion = HalconRuntime.OpeningCircle(region, Model.Radius); break;
                    case HalconMorphOperation.闭运算: outRegion = HalconRuntime.ClosingCircle(region, Model.Radius); break;
                    default: return Fail($"未知形态学操作：{Model.Operation}");
                }

                res["区域"] = outRegion;
                res["结果"] = true;
                HalconEditorPreview.Show(Model, null, outRegion, "orange");   // 只更新叠加区域，保留底图
                Log(2, $"形态学完成：{Model.Operation}，半径={Model.Radius}");
                return NodeRunStatus.Success;
            }
            catch (Exception ex) { return Fail(ex.Message); }
        }
    }
}