using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Threading;
using PropertyGridLib.Attributes;
using PropertyGridLib.Controls;
using TeamAAS.Communication;
using TeamAAS.Core;
using TeamAAS.Communication.Interfaces;
using TeamAAS.FlowEditor.Execution;
using TeamAAS.FlowEditor.Models;
using TeamAAS.FlowEditor.Plugins;
using TeamAAS.FlowEngine.FormulaData;
using Plugins.Standard.Models;

namespace Plugins.Standard.Models
{
    // ─────────────────────────────────────────────────────────────────────
    // 通讯标准节点模型（批量读 / 批量写）。
    // 设计要点：一个节点一次事务处理整组点位 —— 减少往返、结果按键值输出、
    // 失败逐项报告（哪一项失败不影响其余项的执行与结果记录）。
    // ─────────────────────────────────────────────────────────────────────

    /// <summary>通讯批量读取节点模型。</summary>
    [Serializable]
    public class CommBatchReadModel : BasePluginModel
    {
        [Category("I.设备")]
        [DisplayName("1.通讯设备名")]
        [Description("通讯管理器中配置的设备名称（须与名称完全一致）")]
        public string DeviceName { get; set; } = "";

        [Category("II.读取项")]
        [DisplayName("1.读取列表")]
        [Description("地址→键名 映射列表；运行后每个键名成为本节点输出（下游用 &{本节点.键名} 绑定）")]
        [CollectionEditor(CanAdd = true, CanRemove = true, CanSort = true)]
        public List<CommReadItem> Items { get; set; } = new List<CommReadItem>();

        [Category("III.选项")]
        [DisplayName("1.失败时整体失败")]
        [Description("开=任一项读取失败则节点 Failed；关=失败项记入 错误项 输出但节点仍成功")]
        public bool FailOnAnyError { get; set; } = false;
    }

    /// <summary>批量读取项：设备地址 → 输出键名。</summary>
    [Serializable]
    public class CommReadItem
    {
        [Category("读取项")]
        [DisplayName("1.地址")]
        [Description("设备地址（DB块/寄存器/Tag，随设备类型解释）")]
        public string Address { get; set; } = "";

        [Category("读取项")]
        [DisplayName("2.键名")]
        [Description("输出键名（下游绑定的名字）")]
        public string Key { get; set; } = "";

        public override string ToString() => string.IsNullOrWhiteSpace(Key) ? Address : $"{Key} ← {Address}";
    }

    /// <summary>通讯批量写入节点模型。</summary>
    [Serializable]
    public class CommBatchWriteModel : BasePluginModel
    {
        [Category("I.设备")]
        [DisplayName("1.通讯设备名")]
        [Description("通讯管理器中配置的设备名称（须与名称完全一致）")]
        public string DeviceName { get; set; } = "";

        [Category("II.写入项")]
        [DisplayName("1.写入列表")]
        [Description("地址←来源值 映射列表；来源值可绑定上游输出公式（如 &{检测结果.面积}）")]
        [CollectionEditor(CanAdd = true, CanRemove = true, CanSort = true)]
        public List<CommWriteItem> Items { get; set; } = new List<CommWriteItem>();

        [Category("III.选项")]
        [DisplayName("1.失败时整体失败")]
        [Description("开=任一项写入失败则节点 Failed；关=失败项记入 错误项 输出但节点仍成功")]
        public bool FailOnAnyError { get; set; } = true;
    }

    /// <summary>批量写入项：目标地址 ← 来源值（公式/常量）。</summary>
    [Serializable]
    public class CommWriteItem
    {
        public CommWriteItem()
        {
            Source = new FormulaBound<object>();
        }

        [Category("写入项")]
        [DisplayName("1.地址")]
        [Description("设备地址（DB块/寄存器/Tag，随设备类型解释）")]
        public string Address { get; set; } = "";

        [Category("写入项")]
        [DisplayName("2.来源值")]
        [Description("要写入的值；可绑定上游输出（&{节点.键}）或填常量")]
        [FormulaEditor(typeof(PluginDataProvider))]
        public FormulaBound<object> Source { get; set; }

        public override string ToString() => $"{Address} ← {Source?.Formula ?? Source?.Value?.ToString() ?? ""}";
    }
}

namespace Plugins.Standard
{
    // ─────────────────────────────────────────────────────────────────────
    // 通讯标准节点（批量读 / 批量写）。
    // 参考 VisionKit 的通讯节点形态并按 TeamAAS 节点契约实现；后续优化方向：
    //  - 支持 PLC 适配层一次事务批量读写（当前逐项调用 ICommunication.Read/WriteValue）；
    //  - 地址解析缓存与自动重连重试。
    // ─────────────────────────────────────────────────────────────────────

    /// <summary>批量读取：一次执行读取整组地址，结果按键名输出，失败项逐条记录。</summary>
    [Serializable]
    [Plugin("批量读取", PluginCategory.通讯模块, typeof(CommBatchReadModel), "Download",
        NodeShape = NodeCategory.Normal,
        Description = "通讯批量读取：一次事务读取整组地址，结果按键名输出；逐项错误报告，可用公式绑定设备名")]
    public class CommBatchReadPlugin : BasePlugin<CommBatchReadModel>
    {
        public override List<OutputField> DeclareOutputs()
        {
            var list = new List<OutputField>
            {
                new OutputField("成功项数", typeof(int)),
                new OutputField("错误项数", typeof(int)),
                new OutputField("结果", typeof(bool)),
            };
            var items = Model?.Items ?? new List<Plugins.Standard.Models.CommReadItem>();
            foreach (var item in items)
            {
                if (item == null || string.IsNullOrWhiteSpace(item.Key)) continue;
                list.Add(new OutputField(item.Key, typeof(object)));
            }
            return list;
        }

        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, $"批量读取失败: {m}", TeamAAS.LogLevel.Error); return NodeRunStatus.Failed; }

            ICommunication device = FindDevice(Model.DeviceName);
            if (device == null) return Fail($"找不到通讯设备: {Model.DeviceName}");
            if (!device.IsConnected)
            {
                Log(3, "设备未连接，尝试连接…");
                try { device.Connect(); } catch (Exception ex) { return Fail($"设备连接失败: {ex.Message}"); }
                if (!device.IsConnected) return Fail("设备连接失败（无法建立连接）");
            }

            int ok = 0, err = 0;
            var errors = new List<string>();
            foreach (var item in Model.Items ?? new List<Plugins.Standard.Models.CommReadItem>())
            {
                if (token.IsCancellationRequested) return Fail("已取消");
                if (item == null || string.IsNullOrWhiteSpace(item.Address)) continue;
                var key = string.IsNullOrWhiteSpace(item.Key) ? item.Address : item.Key;
                try
                {
                    res[key] = device.ReadValue(item.Address);
                    ok++;
                    Log(4, $"读取[{item.Address}] → {key} = {res[key]}");
                }
                catch (Exception ex)
                {
                    err++;
                    errors.Add($"{key}({item.Address}): {ex.Message}");
                    res[key] = null;
                    Log(2, $"读取失败[{item.Address}]: {ex.Message}", TeamAAS.LogLevel.Warning);
                }
            }

            res["成功项数"] = ok;
            res["错误项数"] = err;
            if (errors.Count > 0) res["错误项"] = string.Join("; ", errors);
            res["结果"] = err == 0 || !Model.FailOnAnyError;

            if (err > 0 && Model.FailOnAnyError)
            {
                Log(1, $"批量读取有 {err} 项失败: {string.Join("; ", errors)}", TeamAAS.LogLevel.Error);
                return NodeRunStatus.Failed;
            }
            Log(2, $"批量读取完成：成功 {ok} 项，失败 {err} 项");
            return NodeRunStatus.Success;
        }

        internal static ICommunication FindDevice(string name)
        {
            if (string.IsNullOrWhiteSpace(name)) return null;
            return CoreManager.Communication?.GetByName(name);
        }
    }

    /// <summary>批量写入：一次执行写入整组地址（来源可绑定公式），失败项逐条记录。</summary>
    [Serializable]
    [Plugin("批量写入", PluginCategory.通讯模块, typeof(CommBatchWriteModel), "Upload",
        NodeShape = NodeCategory.Normal,
        Description = "通讯批量写入：一次事务写入整组地址（来源绑定公式/常量）；逐项错误报告")]
    public class CommBatchWritePlugin : BasePlugin<CommBatchWriteModel>
    {
        public override List<OutputField> DeclareOutputs() => new List<OutputField>
        {
            new OutputField("成功项数", typeof(int)),
            new OutputField("错误项数", 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, $"批量写入失败: {m}", TeamAAS.LogLevel.Error); return NodeRunStatus.Failed; }

            ICommunication device = CommBatchReadPlugin.FindDevice(Model.DeviceName);
            if (device == null) return Fail($"找不到通讯设备: {Model.DeviceName}");
            if (!device.IsConnected)
            {
                Log(3, "设备未连接，尝试连接…");
                try { device.Connect(); } catch (Exception ex) { return Fail($"设备连接失败: {ex.Message}"); }
                if (!device.IsConnected) return Fail("设备连接失败（无法建立连接）");
            }

            int ok = 0, err = 0;
            var errors = new List<string>();
            foreach (var item in Model.Items ?? new List<Plugins.Standard.Models.CommWriteItem>())
            {
                if (token.IsCancellationRequested) return Fail("已取消");
                if (item == null || string.IsNullOrWhiteSpace(item.Address)) continue;

                object value;
                try
                {
                    value = !string.IsNullOrWhiteSpace(item.Source?.Formula)
                        ? RegistryOrDebug.ResolveFormula(GetModel.FlowId, item.Source.Formula)
                        : item.Source?.Value;
                }
                catch (Exception ex)
                {
                    err++;
                    errors.Add($"{item.Address}: 公式解析失败 {ex.Message}");
                    continue;
                }

                try
                {
                    device.WriteValue(item.Address, value);
                    ok++;
                    Log(4, $"写入[{item.Address}] ← {value}");
                }
                catch (Exception ex)
                {
                    err++;
                    errors.Add($"{item.Address}: {ex.Message}");
                    Log(2, $"写入失败[{item.Address}]: {ex.Message}", TeamAAS.LogLevel.Warning);
                }
            }

            res["成功项数"] = ok;
            res["错误项数"] = err;
            if (errors.Count > 0) res["错误项"] = string.Join("; ", errors);
            res["结果"] = err == 0 || !Model.FailOnAnyError;

            if (err > 0 && Model.FailOnAnyError)
            {
                Log(1, $"批量写入有 {err} 项失败: {string.Join("; ", errors)}", TeamAAS.LogLevel.Error);
                return NodeRunStatus.Failed;
            }
            Log(2, $"批量写入完成：成功 {ok} 项，失败 {err} 项");
            return NodeRunStatus.Success;
        }
    }
}