using DevExpress.XtraEditors;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Geometry;
using KGIS.Plugin.LayerProperty.View.UC_Controls;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace KGIS.Plugin.LayerProperty.Utils
{
    public class Util
    {
        public static StringBuilder GetCoordinateSystemInfo(ISpatialReference spatialReference)
        {
            StringBuilder stringBuilder = new StringBuilder();
            if (spatialReference is IGeographicCoordinateSystem)
            {
                StringBuilder geographicCoordinateSystemInfo = Util.GetGeographicCoordinateSystemInfo(spatialReference);
                stringBuilder.Append(geographicCoordinateSystemInfo);
            }
            else
            {
                if (spatialReference is IProjectedCoordinateSystem)
                {
                    StringBuilder projectedCoordinateSystemInfo = Util.GetProjectedCoordinateSystemInfo(spatialReference);
                    stringBuilder.Append(projectedCoordinateSystemInfo);
                }
                else
                {
                    if (spatialReference is IUnknownCoordinateSystem)
                    {
                        stringBuilder.AppendLine("未知坐标系统");
                    }
                    else
                    {
                        if (spatialReference == null)
                        {
                            stringBuilder.AppendLine("无投影");
                        }
                    }
                }
            }
            return stringBuilder;
        }
        private static StringBuilder GetProjectedCoordinateSystemInfo(ISpatialReference spatialReference)
        {
            StringBuilder stringBuilder = new StringBuilder();
            try
            {
                if (spatialReference is IProjectedCoordinateSystem)
                {
                    IProjectedCoordinateSystem projectedCoordinateSystem = spatialReference as IProjectedCoordinateSystem;
                    ILinearUnit coordinateUnit = projectedCoordinateSystem.CoordinateUnit;
                    string text = (coordinateUnit != null) ? coordinateUnit.Name : "未知";
                    stringBuilder.AppendLine("投影坐标系统名称：".PadRight(11) + projectedCoordinateSystem.Name);
                    stringBuilder.AppendLine("投影：".PadRight(17) + projectedCoordinateSystem.Projection.Name);
                    stringBuilder.AppendLine("东偏：".PadRight(17) + projectedCoordinateSystem.FalseEasting.ToString());
                    stringBuilder.AppendLine("北偏：".PadRight(17) + projectedCoordinateSystem.FalseNorthing.ToString());
                    stringBuilder.AppendLine("缩放因子：".PadRight(15) + projectedCoordinateSystem.ScaleFactor.ToString());
                    try
                    {
                        stringBuilder.AppendLine("原点纬度：".PadRight(15) + projectedCoordinateSystem.LongitudeOfOrigin.ToString());
                    }
                    catch
                    {
                    }
                    stringBuilder.AppendLine(string.Concat(new object[]
                    {
                        "直线单位：".PadRight(15),
                        text,
                        "(",
                        projectedCoordinateSystem.CoordinateUnit.MetersPerUnit,
                        ")"
                    }));
                    stringBuilder.AppendLine("");
                    stringBuilder.AppendLine(Util.GetGeographicCoordinateSystemInfo(projectedCoordinateSystem.GeographicCoordinateSystem).ToString());
                }
            }
            catch
            {
            }
            return stringBuilder;
        }
        private static StringBuilder GetGeographicCoordinateSystemInfo(ISpatialReference spatialReference)
        {
            StringBuilder stringBuilder = new StringBuilder();
            try
            {
                if (spatialReference is IGeographicCoordinateSystem)
                {
                    IGeographicCoordinateSystem geographicCoordinateSystem = spatialReference as IGeographicCoordinateSystem;
                    IAngularUnit coordinateUnit = geographicCoordinateSystem.CoordinateUnit;
                    string text = (coordinateUnit != null) ? coordinateUnit.Name : "未知";
                    stringBuilder.AppendLine("地理坐标系统名称：".PadRight(11) + geographicCoordinateSystem.Name);
                    stringBuilder.AppendLine(string.Concat(new object[]
                    {
                        "弧度单位：".PadRight(15),
                        text,
                        "(",
                        geographicCoordinateSystem.CoordinateUnit.RadiansPerUnit,
                        ")"
                    }));
                    stringBuilder.AppendLine(string.Concat(new object[]
                    {
                        "本初子午线：".PadRight(14),
                        geographicCoordinateSystem.PrimeMeridian.Name,
                        "(",
                        geographicCoordinateSystem.PrimeMeridian.Longitude,
                        ")"
                    }));
                    stringBuilder.AppendLine("水准面：".PadRight(16) + geographicCoordinateSystem.Datum.Name);
                    stringBuilder.AppendLine("椭球体：".PadRight(16) + geographicCoordinateSystem.Datum.Spheroid.Name);
                    stringBuilder.AppendLine("长半轴：".PadRight(16) + geographicCoordinateSystem.Datum.Spheroid.SemiMajorAxis.ToString());
                    stringBuilder.AppendLine("短半轴：".PadRight(16) + geographicCoordinateSystem.Datum.Spheroid.SemiMinorAxis.ToString());
                    stringBuilder.AppendLine("扁率倒数：".PadRight(15) + geographicCoordinateSystem.Datum.Spheroid.Flattening.ToString());
                }
            }
            catch
            {
            }
            return stringBuilder;
        }

        public static void InitFieldList(ref ComboBoxEdit cmb, IFields fields, string selected)
        {
            Util.InitFieldList(ref cmb, fields, selected, false, false, false, false);
        }
        public static void InitFieldList(ref ComboBoxEdit cmb, IFields fields, string selected, bool haveNone)
        {
            Util.InitFieldList(ref cmb, fields, selected, haveNone, false, false, false);
        }
        public static void InitFieldList(ref ComboBoxEdit cmb, IFields fields, string selected, bool haveNone, bool isNumberOnly)
        {
            Util.InitFieldList(ref cmb, fields, selected, haveNone, isNumberOnly, false, false);
        }
        public static void InitFieldList(ref ComboBoxEdit cmb, IFields fields, string selected, bool haveNone, bool isNumberOnly, bool useAlias)
        {
            Util.InitFieldList(ref cmb, fields, selected, haveNone, isNumberOnly, useAlias, true);
        }
        public static void InitFieldList(ref ComboBoxEdit cmb, IFields fields, string selected, bool haveNone, bool isNumberOnly, bool useAlias, bool hasObjID)
        {
            try
            {
                cmb.Properties.Items.Clear();
                if (fields != null)
                {
                    ItemInfo<IField, string> itemInfo = null;
                    IList<ItemInfo<IField, string>> list = new List<ItemInfo<IField, string>>();
                    if (haveNone)
                    {
                        itemInfo = new ItemInfo<IField, string>(null, "<none>");
                        list.Add(itemInfo);
                    }
                    int i = 0;
                    while (i < fields.FieldCount)
                    {
                        IField field = fields.get_Field(i);
                        ItemInfo<IField, string> itemInfo2 = null;
                        if (field.Type == esriFieldType.esriFieldTypeBlob || field.Type == esriFieldType.esriFieldTypeGeometry || field.Type == esriFieldType.esriFieldTypeRaster || field.Type == esriFieldType.esriFieldTypeXML)
                        {
                            goto IL_103;
                        }
                        if ((!isNumberOnly || field.Type == esriFieldType.esriFieldTypeDouble || field.Type == esriFieldType.esriFieldTypeInteger || field.Type == esriFieldType.esriFieldTypeSingle || field.Type == esriFieldType.esriFieldTypeSmallInteger) && (hasObjID || field.Type != esriFieldType.esriFieldTypeOID))
                        {
                            if (useAlias)
                            {
                                itemInfo2 = new ItemInfo<IField, string>(field, (field.AliasName == "") ? field.Name : field.AliasName);
                            }
                            else
                            {
                                itemInfo2 = new ItemInfo<IField, string>(field, field.Name);
                            }
                            if (itemInfo2 != null)
                            {
                                list.Add(itemInfo2);
                                goto IL_103;
                            }
                            goto IL_103;
                        }
                    IL_136:
                        i++;
                        continue;
                    IL_103:
                        if (field.Name.ToUpper() == selected.ToUpper() || field.AliasName.ToUpper() == selected.ToUpper())
                        {
                            itemInfo = itemInfo2;
                            goto IL_136;
                        }
                        goto IL_136;
                    }
                    DevExpressControlInitList<IField, string>.InitComboBoxEdit(ref cmb, list, itemInfo);
                }
            }
            catch (Exception ex)
            {
                //RdbUtil.AddException(ex);
            }
        }

        public static List<string> GetUniqueValuesManyFields(List<IField> fieldNames, ICursor cursor)
        {
            List<string> list = new List<string>();
            if (cursor == null)
            {
                return list;
            }
            string text = "";
            for (IRow row = cursor.NextRow(); row != null; row = cursor.NextRow())
            {
                text = "";
                foreach (IField current in fieldNames)
                {
                    object obj = row.get_Value(row.Fields.FindField(current.Name));
                    if (obj == null)
                    {
                        if (text == "")
                        {
                            text = "<null>";
                        }
                        else
                        {
                            text += ", <null>";
                        }
                    }
                    else
                    {
                        if (obj.ToString() == "")
                        {
                            obj = "<null>";
                        }
                        if (text == "")
                        {
                            text = obj.ToString();
                        }
                        else
                        {
                            text = text + ", " + obj.ToString();
                        }
                    }
                }
                if (!list.Contains(text))
                {
                    list.Add(text);
                }
            }
            return list;
        }
    }
}