using CaeGlobals;
using CaeKnowledge.Data;
using CaeKnowledge.View;
using LiteDB;
using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;

namespace CaeKnowledge
{
    public class KnowledgeTools
    {
        public static Cutter FindCutter(string cid)
        {
            var fullPath = CaeGlobals.Tools.GetLiteDatabase();

            using(var db = new LiteDatabase(fullPath))
            {
                var col = db.GetCollection<Cutter>("cutters");
                return col.FindOne(x => x.Cid == cid);
            }
        }

        public static CuttingParameter FindCuttingParameter(string pid)
        {
            var fullPath = CaeGlobals.Tools.GetLiteDatabase();

            using (var db = new LiteDatabase(fullPath))
            {
                var col = db.GetCollection<CuttingParameter>("cutting_parameters");
                return col.FindOne(x => x.Pid == pid);
            }
        }

        public static List<ViewCutter> LoadViewCutters(string fullPath)
        {
            List<ViewCutter> cutters = new List<ViewCutter>();

            try
            {
                DataTable dataTable = LoadExcelFile(fullPath, out var isSuccess, out var resultMsg);

                if (dataTable.Columns.Count != 11)
                {
                    throw new CaeException("导入Excel文件的列数大于或者小于11个!");
                }

                if (isSuccess)
                {
                    foreach (DataRow row in dataTable.Rows)
                    {
                        Cutter cutter = new Cutter(ObjectId.NewObjectId())
                        {
                            Cid = row[0].ToString(),
                            Cname = row[1].ToString(),
                            Description = row[2].ToString(),
                            Code = row[3].ToString(),
                            Material = row[4].ToString(),
                            Number = IntParse(row[5].ToString()),
                            Diameter = DoubleParse(row[6].ToString()),
                            ToolLength = DoubleParse(row[7].ToString()),
                            FluteLength = DoubleParse(row[8].ToString()),
                            Flute = IntParse(row[9].ToString()),
                            HelixAngle = DoubleParse(row[10].ToString())
                        };

                        cutters.Add(new ViewCutter(cutter));
                    }
                }
                else
                {
                    ExceptionTools.Show(resultMsg);
                }
            }
            catch (Exception ex)
            {
                ExceptionTools.Show(ex);
            }

            return cutters;
        }

        public static List<ViewCuttingParameter> LoadCuttingParameters(string fullPath)
        {
            List<ViewCuttingParameter> cuttingParameters = new List<ViewCuttingParameter>();

            try
            {
                DataTable dataTable = LoadExcelFile(fullPath, out var isSuccess, out var resultMsg);

                if (dataTable.Columns.Count != 9)
                {
                    throw new CaeException("导入Excel文件的列数大于或者小于9个!");
                }

                if (isSuccess)
                {
                    foreach (DataRow row in dataTable.Rows)
                    {
                        CuttingParameter cp = new CuttingParameter(ObjectId.NewObjectId())
                        {
                            Pid = row[0].ToString(),
                            Cid = row[1].ToString(),
                            Material = row[2].ToString(),
                            AxialForceCoefficient = DoubleParse(row[3].ToString()),
                            RadialForceCoefficient = DoubleParse(row[4].ToString()),
                            TangentialForceCoefficient=DoubleParse(row[5].ToString()),
                            AxialForceConstant = DoubleParse(row[6].ToString()),
                            RadialForceConstant = DoubleParse(row[7].ToString()),
                            TangentialForceConstant = DoubleParse(row[8].ToString())
                        };

                        cuttingParameters.Add(new ViewCuttingParameter(cp));
                    }
                }
                else
                {
                    ExceptionTools.Show(resultMsg);
                }

            }
            catch (Exception ex)
            {
                ExceptionTools.Show(ex);
            }

            return cuttingParameters;
        }

        private static DataTable LoadExcelFile(string fullPath, out bool isSuccess, out string resultMsg)
        {
            isSuccess = false;
            resultMsg = "读取Excel文件错误";
            if (!File.Exists(fullPath)) return new DataTable();

            using (var stream = new FileStream(fullPath, FileMode.Open))
            {
                var fileType = Path.GetExtension(fullPath);

                return NpoiExcelImportHelper.Self.ExcelToDataTable(stream, fileType,
                    out isSuccess, out resultMsg);
            }
        }

        public static void SaveDatabase(string fullPath, List<Cutter> cutters)
        {
            try
            {
                // Open (or create) the LiteDB database at the specified path
                using (var db = new LiteDatabase(fullPath))
                {
                    // Get (or create) a collection named "view_cutters"
                    var col = db.GetCollection<Cutter>("cutters");

                    // Optionally, clear the collection before inserting new data
                    col.DeleteAll();

                    // Insert all cutters
                    col.InsertBulk(cutters);
                }
            }
            catch (Exception ex)
            {
                // Handle exceptions (e.g., log or display an error)
                ExceptionTools.Show(ex);
            }
        }

        public static void SaveDatabase(string fullPath, List<CuttingParameter> cuttingParameters)
        {
            try
            {
                using (var db = new LiteDatabase(fullPath))
                {
                    var col = db.GetCollection<CuttingParameter>("cutting_parameters");
                    col.DeleteAll();
                    col.InsertBulk(cuttingParameters);
                }
            }
            catch (Exception ex)
            {
                ExceptionTools.Show(ex);
            }
        }

        public static void SaveDatabase(string fullPath, List<ViewElasticWithDensity> elasticWithDensities)
        {
            try
            {
                using (var db = new LiteDatabase(fullPath))
                {
                    var col = db.GetCollection<ViewElasticWithDensity>("elastic_with_densities");
                    col.DeleteAll();
                    col.InsertBulk(elasticWithDensities);
                }
            }
            catch (Exception ex)
            {
                ExceptionTools.Show(ex);
            }
        }

        public static List<Cutter> LoadCuttersFromDatabase(string fullPath)
        {
            try
            {
                using (var db = new LiteDatabase(fullPath))
                {
                    var col = db.GetCollection<Cutter>("cutters");
                    // Fetch all documents in the collection and return as a list
                    return col.FindAll().ToList();
                }
            }
            catch (Exception ex)
            {
                // Handle exceptions (e.g., log or display an error)
                // Console.Error.WriteLine($"Error loading data from LiteDB: {ex.Message}");
                // Return an empty list on error
                return new List<Cutter>();
            }
        }

        public static List<CuttingParameter> LoadCuttingParametersFromDatabase(string fullPath)
        {
            try
            {
                using (var db = new LiteDatabase(fullPath))
                {
                    var col = db.GetCollection<CuttingParameter>("cutting_parameters");
                    return col.FindAll().ToList();
                }
            }
            catch (Exception ex)
            {
                return new List<CuttingParameter>();
            }
        }

        public static List<ViewElasticWithDensity> LoadElasticWithDensitiesFromDatabase(string fullPath)
        {
            try
            {
                using (var db = new LiteDatabase(fullPath))
                {
                    var col = db.GetCollection<ViewElasticWithDensity>("elastic_with_densities");
                    return col.FindAll().ToList();
                }
            }
            catch (Exception ex)
            {
                return new List<ViewElasticWithDensity>();
            }
        }

        public static void FromCutter(ViewCutter cutter, ref DataRow row)
        {
            row[nameof(ViewCutter.Id)] = cutter.Id;

            row[nameof(ViewCutter.Cid)] = cutter.Cid;
            row[nameof(ViewCutter.Cname)] = cutter.Cname;
            row[nameof(ViewCutter.Description)] = cutter.Description;
            row[nameof(ViewCutter.Code)] = cutter.Code;
            row[nameof(ViewCutter.Material)] = cutter.Material;

            row[nameof(ViewCutter.Number)] = cutter.Number;
            row[nameof(ViewCutter.Diameter)] = cutter.Diameter;
            row[nameof(ViewCutter.ToolLength)] = cutter.ToolLength;
            row[nameof(ViewCutter.FluteLength)] = cutter.FluteLength;
            row[nameof(ViewCutter.Flute)] = cutter.Flute;
            row[nameof(ViewCutter.HelixAngle)] = cutter.HelixAngle;
        }

        public static ViewCutter ToCutter(DataRow row)
        {
            Cutter cutter = new Cutter(row[nameof(ViewCutter.Id)] as ObjectId)
            {
                Cid = (string)row[nameof(ViewCutter.Cid)],
                Cname = (string)row[nameof(ViewCutter.Cname)],
                Description = (string)row[nameof(ViewCutter.Description)],
                Code = (string)row[nameof(ViewCutter.Code)],
                Material = (string)row[nameof(ViewCutter.Material)],
                Number = (int)row[nameof(ViewCutter.Number)],
                Diameter = (double)row[nameof(ViewCutter.Diameter)],
                ToolLength = (double)row[nameof(ViewCutter.ToolLength)],
                FluteLength = (double)row[nameof(ViewCutter.FluteLength)],
                Flute = (int)row[nameof(ViewCutter.Flute)],
                HelixAngle = (double)row[nameof(ViewCutter.HelixAngle)]
            };

            return new ViewCutter(cutter);
        }

        private static int IntParse(string s)
        {
            int value = 0;

            if (int.TryParse(s, out var v))
            {
                value = v;
            }

            return value;
        }

        private static double DoubleParse(string s)
        {
            double value = 0.0;

            if (double.TryParse(s, out var v))
            {
                value = v;
            }

            return value;
        }

        public static Type ObjectIdType => typeof(ObjectId);

        // Luke 2026-3-25
        public static void SaveDatabase(string fullPath, List<ProcessingJob> jobs)
        {
            try
            {
                using (var db = new LiteDatabase(fullPath))
                {
                    var col = db.GetCollection<ProcessingJob>("jobs");
                    col.DeleteAll();
                    col.InsertBulk(jobs);
                }
            }
            catch (Exception ex)
            {
                ExceptionTools.Show(ex);
            }
        }

         public static List<ProcessingJob> LoadDatabase(string fullPath)
        {
            try
            {
                using (var db = new LiteDatabase(fullPath))
                {
                    var col = db.GetCollection<ProcessingJob>("jobs");
                    // Fetch all documents in the collection and return as a list
                    return col.FindAll().ToList();
                }
            }
            catch (Exception ex)
            {
                // Handle exceptions (e.g., log or display an error)
                // Console.Error.WriteLine($"Error loading data from LiteDB: {ex.Message}");
                // Return an empty list on error
                return new List<ProcessingJob>();
            }
        }
    }
}