using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using AI.AgentIntegration;
using GeoSigma.UCDraw.Service;
using GeoSigma.UCDraw.UC;
using GeoSigmaDrawLib;
using Newtonsoft.Json;

namespace PcgDrawR.Services
{
    /// <summary>
    /// 负责栅格化（网络化）相关的业务逻辑。
    /// </summary>
    public class GriddingModuleService
    {
        private readonly IAppEnvironment env;
        private readonly GriddingContext griddingContext;
        private readonly GriddingService griddingService;

        private readonly string importRoot;
        private readonly string outputPath;

        public GriddingModuleService(IAppEnvironment env, string importRoot = "E:/import", string outputPath = "E:/output.kev")
        {
            this.env = env ?? throw new ArgumentNullException(nameof(env));
            this.importRoot = importRoot;
            this.outputPath = outputPath;

            griddingContext = new GriddingContext(this.importRoot);
            griddingService = new GriddingService();
        }

        public Task<AppActionResult> GetParametersAsync(AppAction action)
        {
            string yaml = griddingContext.GetParametersYamlForAI();
            return Task.FromResult(AppActionResult.Sucess(yaml));
        }

        public Task<AppActionResult> SetParametersAsync(AppAction action)
        {
            if (!action.Parameters.TryGetValue("parameters", out var parametersObj))
            {
                return Task.FromResult(AppActionResult.Fail("缺少 'parameters' 参数"));
            }

            string parametersStr = parametersObj.ToString();
            griddingContext.SetParametersFromYaml(parametersStr);
            return Task.FromResult(AppActionResult.Sucess("设置成功"));
        }

        public Task<AppActionResult> GetColumnsAsync(AppAction action)
        {
            List<string> requredColumns = griddingContext.GetRequiredColumns(griddingContext.CurrentImportDataType);
            List<string> availableColumns = griddingContext.GetAvailableColumns();

            var dataToSerialize = new
            {
                RequiredColumns = requredColumns,
                AvailableColumns = availableColumns,
            };

            return Task.FromResult(AppActionResult.Sucess(JsonConvert.SerializeObject(dataToSerialize)));
        }

        public async Task<AppActionResult> LoadXyzAsync(AppAction action)
        {
            if (!action.Parameters.TryGetValue("path", out var pathObj))
            {
                return AppActionResult.Fail("缺少 'path' 参数");
            }

            string path = pathObj.ToString();

            griddingContext.CurrentImportDataType = DataLoaderModel.ImportDataType.Xyz;
            bool ok = await griddingService.LoadFileAsync(griddingContext, path);
            griddingContext.CurrentDataType = UCDraw.GraphDataType.XYZ;
            return ok ? AppActionResult.Sucess("加载成功") : AppActionResult.Fail("加载文件失败");
        }

        public Task<AppActionResult> MatchColumnsAsync(AppAction action)
        {
            var connections = new List<ShapeConnection>();
            foreach (var kv in action.Parameters)
            {
                connections.Add(new ShapeConnection(kv.Key, kv.Value.ToString()));
            }

            griddingService.SetColumnMapping(griddingContext, connections);
            return Task.FromResult(AppActionResult.Sucess("加载成功"));
        }

        public async Task<AppActionResult> ImportAsync(AppAction action)
        {
            await griddingService.ImportAsync(griddingContext, griddingContext.CurrentImportDataType);
            return AppActionResult.Sucess("导入成功");
        }

        public async Task<AppActionResult> RunAsync(AppAction action)
        {
            var result = await griddingService.GriddingAsync(griddingContext, outputPath);
            if (result.Success && !string.IsNullOrWhiteSpace(result.Output))
            {
                env.MainForm.Invoke(() =>
                {
                    env.ActiveUCDrawEdit?.OpenFile(result.Output);
                });
            }
            return AppActionResult.Sucess("网络化成功");
        }

        public Task<AppActionResult> PreviewDataAsync(AppAction action)
        {
            string markdown = griddingService.GetPreviewData(griddingContext);
            AppActionResult result = AppActionResult.Sucess(message: markdown);
            return Task.FromResult(result);
        }

        public Task<AppActionResult> AddScaleBarAsync(AppAction action)
        {
            var geo = env.ActiveGeo;
            if (geo != null)
            {
                var cache = griddingContext.griddingModel.XyzAreaCache;
                bool result = geo.CreateProportionFull("比例尺", cache.XMin, cache.YMin, cache.XMax, cache.YMax, 100, 10, 10);
                if (result)
                {
                    return Task.FromResult(AppActionResult.Sucess("添加比例尺成功"));
                }
                else
                {
                    return Task.FromResult(AppActionResult.Fail("添加失败: 当前没有打开任何图件"));
                }
            }

            return Task.FromResult(AppActionResult.Fail("添加失败: 当前没有打开任何图件"));
        }

        public Task<AppActionResult> AddLegendAsync(AppAction action)
        {
            var geo = env.ActiveGeo;
            var cache = griddingContext.griddingModel.XyzAreaCache;
            if (geo != null)
            {
                double width = Math.Abs(cache.XMax - cache.XMin) / 3.0;
                geo.LegendAdd(cache.XMin, cache.YMin, width, 3, "");
                return Task.FromResult(AppActionResult.Sucess("添加图例成功"));
            }
            return Task.FromResult(AppActionResult.Fail("添加失败: 当前没有打开任何图件"));
        }
    }
}