using gregn6Lib;
using System;
using System.Data;
using System.Windows.Forms;

namespace HL_FristAidPlatform_Public
{
    /// <summary>
    /// GridppReport 的摘要说明。
    /// </summary>
    public class GridppReportUtility
    {
        //public const string GetDatabaseConnectionString()  = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=..\..\..\..\Data\Northwind.mdb";

        //此函数用来注册Grid++Report，你必须在你的应用程序启动时调用此函数
        //用你自己的序列号代替"AAAAAAA"，"AAAAAAA"是一个无效的序列号
        public static void RegisterGridppReport()
        {
            GridppReport TempGridppReport = new GridppReport();
            bool Succeeded = TempGridppReport.Register("AAAAAAA");
            if (!Succeeded)
                System.Windows.Forms.MessageBox.Show("Register Grid++Report Failed, Grid++Report will run in trial mode.", "Register"
                    , System.Windows.Forms.MessageBoxButtons.OK, System.Windows.Forms.MessageBoxIcon.Exclamation);
        }

        private struct MatchFieldPairType
        {
            public IGRField grField;
            public int MatchColumnIndex;
        }

        /// <summary>
        /// 将 DataReader 的数据转储到 Grid++Report 的数据集中
        /// </summary>
        /// <param name="Report"></param>
        /// <param name="dr"></param>
        public static void FillRecordToReport(IGridppReport Report, IDataReader dr)
        {
            MatchFieldPairType[] MatchFieldPairs = new MatchFieldPairType[Math.Min(Report.DetailGrid.Recordset.Fields.Count, dr.FieldCount)];

            //根据字段名称与列名称进行匹配，建立DataReader字段与Grid++Report记录集的字段之间的对应关系
            int MatchFieldCount = 0;
            for (int i = 0; i < dr.FieldCount; ++i)
            {
                foreach (IGRField fld in Report.DetailGrid.Recordset.Fields)
                {
                    if (String.Compare(fld.RunningDBField, dr.GetName(i), true) == 0)
                    {
                        MatchFieldPairs[MatchFieldCount].grField = fld;
                        MatchFieldPairs[MatchFieldCount].MatchColumnIndex = i;
                        ++MatchFieldCount;
                        break;
                    }
                }
            }

            // Loop through the contents of the OleDbDataReader object.
            // 将 DataReader 中的每一条记录转储到Grid++Report 的数据集中去
            while (dr.Read())
            {
                Report.DetailGrid.Recordset.Append();

                for (int i = 0; i < MatchFieldCount; ++i)
                {
                    if (!dr.IsDBNull(MatchFieldPairs[i].MatchColumnIndex))
                        MatchFieldPairs[i].grField.Value = dr.GetValue(MatchFieldPairs[i].MatchColumnIndex);
                }

                Report.DetailGrid.Recordset.Post();
            }
        }

        /// <summary>
        /// 将 DataTable 的数据转储到 Grid++Report 的数据集中
        /// </summary>
        /// <param name="Report"></param>
        /// <param name="dt"></param>
        public static void FillRecordToReport(IGridppReport Report, DataTable dt)
        {
            MatchFieldPairType[] MatchFieldPairs = new MatchFieldPairType[Math.Min(Report.DetailGrid.Recordset.Fields.Count, dt.Columns.Count)];

            //根据字段名称与列名称进行匹配，建立DataReader字段与Grid++Report记录集的字段之间的对应关系
            int MatchFieldCount = 0;
            for (int i = 0; i < dt.Columns.Count; ++i)
            {
                foreach (IGRField fld in Report.DetailGrid.Recordset.Fields)
                {
                    if (String.Compare(fld.Name, dt.Columns[i].ColumnName, true) == 0)
                    {
                        MatchFieldPairs[MatchFieldCount].grField = fld;
                        MatchFieldPairs[MatchFieldCount].MatchColumnIndex = i;
                        ++MatchFieldCount;
                        break;
                    }
                }
            }

            // 将 DataTable 中的每一条记录转储到 Grid++Report 的数据集中去
            foreach (DataRow dr in dt.Rows)
            {
                Report.DetailGrid.Recordset.Append();

                for (int i = 0; i < MatchFieldCount; ++i)
                {
                    if (!dr.IsNull(MatchFieldPairs[i].MatchColumnIndex))
                        MatchFieldPairs[i].grField.Value = dr[MatchFieldPairs[i].MatchColumnIndex];
                }

                Report.DetailGrid.Recordset.Post();
            }
        }

        public static uint RGBToOleColor(byte r, byte g, byte b)
        {
            return ((uint)b) * 256 * 256 + ((uint)g) * 256 + r;
        }

        public static uint ColorToOleColor(System.Drawing.Color val)
        {
            return RGBToOleColor(val.R, val.G, val.B);
        }

        public static string GetSampleRootPath()
        {
            string FileName = Application.StartupPath.ToLower();
            int Index = FileName.LastIndexOf("samples");
            FileName = FileName.Substring(0, Index);
            return FileName + @"samples\";
        }

        /// <summary>
        /// 获取报表模板路径地址
        /// </summary>
        /// <returns></returns>
        public static string GetReportTemplatePath()
        {
            return GetSampleRootPath() + @"Reports\";
        }

        /// <summary>
        /// 获取报表数据源地址
        /// </summary>
        /// <returns></returns>
        public static string GetReportDataPath()
        {
            return GetSampleRootPath() + @"Data\";
        }

        /// <summary>
        /// 获取指定数据库
        /// </summary>
        /// <returns></returns>
        public static string GetReportDataPathFile()
        {
            return GetReportDataPath() + @"NorthWind.mdb";
        }

        /// <summary>
        /// 判断当前运行进程是不是64位程序
        /// </summary>
        /// <returns></returns>
        public static bool Is64bitProcess()
        {
            //IsWow64Process
            //也可以直接用Environment.Is64BitProcess，不过需要DotNet4.0或以上版本。
            return (IntPtr.Size == 8);
        }

        /// <summary>
        /// 获取数据库连接字符串
        /// </summary>
        /// <returns></returns>
        public static string GetDatabaseConnectionString()
        {
            //return "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + GetReportDataPathFile();
            //Grid++Report的64位程序通过OLE DB连接Access与32位程序使用完全不同的数据驱动程序，
            //此数据驱动程序(AccessDatabaseEngine_X64.exe)没有跟随Windows系统自动安装，需要从
            //微软官方网站下载并安装,
            //下载地址：https://www.microsoft.com/zh-CN/download/details.aspx?id=13255
            //如果直接不能安装，要先将Ofiice卸载后再进行安装，驱动程序安装后，在重新安装Office。
            return (Is64bitProcess() ?
                "Provider = Microsoft.ACE.OLEDB.12.0;"
                : "Provider=Microsoft.Jet.OLEDB.4.0;")
                + "User ID=Admin;Data Source=" + GetReportDataPathFile();
        }
    }
}