using System;
using System.Collections;
using FastReport.Data;

namespace FastReport.CrossView
{
    /// <summary>
    /// Contains a set of properties and methods to hold and manipulate the CrossView descriptors.
    /// </summary>
    /// <remarks>
    /// This class contains three collections of descriptors such as <see cref="Columns"/>,
    /// <see cref="Rows"/> and <see cref="Cells"/>. Descriptors are filled from FastCube Slice.
    /// </remarks>
    public class CrossViewData
    {
        #region Fields
        private CrossViewHeader columns;
        private CrossViewHeader rows;
        private CrossViewCells cells;
        internal int[] columnDescriptorsIndexes;
        internal int[] rowDescriptorsIndexes;
        internal int[] columnTerminalIndexes;
        internal int[] rowTerminalIndexes;
        #endregion

        #region FastCube properties (temporary)
        private CubeSourceBase cubeSource;
        /// <summary>
        /// 
        /// </summary>
        public int XAxisFieldsCount { get { return cubeSource != null ? cubeSource.XAxisFieldsCount : 0; } }
        /// <summary>
        /// 
        /// </summary>
        public int YAxisFieldsCount { get { return cubeSource != null ? cubeSource.YAxisFieldsCount : 0; } }
        /// <summary>
        /// 
        /// </summary>
        public int MeasuresCount { get { return cubeSource != null ? cubeSource.MeasuresCount : 0; } }
        /// <summary>
        /// 
        /// </summary>
        public int MeasuresLevel { get { return cubeSource != null ? cubeSource.MeasuresLevel : 0; } }
        /// <summary>
        /// 
        /// </summary>
        public bool MeasuresInXAxis { get { return cubeSource != null ? cubeSource.MeasuresInXAxis : false; } }
        /// <summary>
        /// 
        /// </summary>
        public bool MeasuresInYAxis { get { return cubeSource != null ? cubeSource.MeasuresInYAxis : false; } }
        /// <summary>
        /// 
        /// </summary>
        public int DataColumnCount { get { return cubeSource != null ? cubeSource.DataColumnCount : 0; } }
        /// <summary>
        /// 
        /// </summary>
        public int DataRowCount { get { return cubeSource != null ? cubeSource.DataRowCount : 0; } }
        /// <summary>
        /// 
        /// </summary>
        public bool SourceAssigned { get { return cubeSource != null; } }
#if !DOTNET_4
    private string intArrayToString(int[] intArray)
    {
      string res = "";
      foreach (int item in intArray)
      {
        if (res != "")
          res += ",";
        res += item.ToString();
      }
      return res;
    }
    private int[] stringToIntArray(string str)
    {
      string[] strArray = str.Split(',');
      int[] res = new int[strArray.Length];
      for (int i = 0; i < strArray.Length; i++)
      {
        res[i] = int.Parse(strArray[i]);
      }
      return res;
    }
#endif
        /// <summary>
        /// 
        /// </summary>
        public string ColumnDescriptorsIndexes
        {
#if DOTNET_4
            get { return string.Join(",", columnDescriptorsIndexes); }
            set { columnDescriptorsIndexes = Array.ConvertAll(value.Split(','), int.Parse); }
#else
      get { return intArrayToString(columnDescriptorsIndexes); }
      set { columnDescriptorsIndexes = stringToIntArray(value); }
#endif
        }
        /// <summary>
        /// 
        /// </summary>
        public string RowDescriptorsIndexes
        {
#if DOTNET_4
            get { return string.Join(",", rowDescriptorsIndexes); }
            set { rowDescriptorsIndexes = Array.ConvertAll(value.Split(','), int.Parse); }
#else
      get { return intArrayToString(rowDescriptorsIndexes); }
      set { rowDescriptorsIndexes = stringToIntArray(value); }
#endif
        }
        /// <summary>
        /// 
        /// </summary>
        public string ColumnTerminalIndexes
        {
#if DOTNET_4
            get { return string.Join(",", columnTerminalIndexes); }
            set { columnTerminalIndexes = Array.ConvertAll(value.Split(','), int.Parse); }
#else
      get { return intArrayToString(columnTerminalIndexes); }
      set { columnTerminalIndexes = stringToIntArray(value); }
#endif
        }
        /// <summary>
        /// 
        /// </summary>
        public string RowTerminalIndexes
        {
#if DOTNET_4
            get { return string.Join(",", rowTerminalIndexes); }
            set { rowTerminalIndexes = Array.ConvertAll(value.Split(','), int.Parse); }
#else
      get { return intArrayToString(rowTerminalIndexes); }
      set { rowTerminalIndexes = stringToIntArray(value); }
#endif
        }
        internal CubeSourceBase CubeSource
        {
            get { return cubeSource; }
            set
            {
                if (cubeSource != value)
                {
                    cubeSource = value;
                }
            }
        }
        internal void CreateDescriptors()
        {
            columnDescriptorsIndexes = new int[0];
            rowDescriptorsIndexes = new int[0];
            columnTerminalIndexes = new int[0];
            rowTerminalIndexes = new int[0];
            CrossViewHeaderDescriptor crossViewHeaderDescriptor;
            Columns.Clear();
            Rows.Clear();
            Cells.Clear();

            if (!SourceAssigned)
                return;
            int cell = 0;
            for (int i = 0; i < XAxisFieldsCount; i++)
            {
                cell = 0;
                if (MeasuresInXAxis && (MeasuresLevel <= i))
                {
                    if (MeasuresLevel == i)
                    {
                        for (int k = 0; k <= i; k++)
                        {
                            for (int j = 0; j < MeasuresCount; j++)
                            {
                                if (k == i)
                                {
                                    crossViewHeaderDescriptor = new CrossViewHeaderDescriptor("", CubeSource.GetMeasureName(j), false, false, true);
                                    crossViewHeaderDescriptor.cellsize = 1;
                                    crossViewHeaderDescriptor.levelsize = XAxisFieldsCount - i;
                                }
                                else
                                {
                                    crossViewHeaderDescriptor = new CrossViewHeaderDescriptor(CubeSource.GetXAxisFieldName(k), CubeSource.GetMeasureName(j), false, false, true);
                                    crossViewHeaderDescriptor.cellsize = (XAxisFieldsCount - i);
                                    crossViewHeaderDescriptor.levelsize = 1;
                                }
                                crossViewHeaderDescriptor.level = i;
                                crossViewHeaderDescriptor.cell = cell;
                                cell += crossViewHeaderDescriptor.cellsize;
                                Columns.Add(crossViewHeaderDescriptor);
                                if ((j == 0) && (k == 0))
                                {
                                    Array.Resize(ref rowDescriptorsIndexes, rowDescriptorsIndexes.Length + 1);
                                    rowDescriptorsIndexes[rowDescriptorsIndexes.Length - 1] = Columns.Count - 1;
                                }
                                if ((k == i) || (i == (XAxisFieldsCount - 1)))
                                {
                                    Array.Resize(ref columnTerminalIndexes, columnTerminalIndexes.Length + 1);
                                    columnTerminalIndexes[columnTerminalIndexes.Length - 1] = Columns.Count - 1;
                                }
                            }
                        }
                    }
                    else
                    {
                        for (int j = 0; j < MeasuresCount; j++)
                        {
                            crossViewHeaderDescriptor = new CrossViewHeaderDescriptor(CubeSource.GetXAxisFieldName(i), "", false, false, false);
                            crossViewHeaderDescriptor.level = i;
                            crossViewHeaderDescriptor.levelsize = 1;
                            crossViewHeaderDescriptor.cell = cell;
                            crossViewHeaderDescriptor.cellsize = XAxisFieldsCount - i;
                            cell += crossViewHeaderDescriptor.cellsize;
                            Columns.Add(crossViewHeaderDescriptor);
                            if (j == 0)
                            {
                                Array.Resize(ref rowDescriptorsIndexes, rowDescriptorsIndexes.Length + 1);
                                rowDescriptorsIndexes[rowDescriptorsIndexes.Length - 1] = Columns.Count - 1;
                            }

                            if (i == 1)
                            {
                                crossViewHeaderDescriptor = new CrossViewHeaderDescriptor("", "", false, true, false);
                            }
                            else
                            if (i == (MeasuresLevel + 1))
                            {
                                crossViewHeaderDescriptor = new CrossViewHeaderDescriptor(CubeSource.GetXAxisFieldName(i - 2), "", true, false, false);
                            }
                            else
                            {
                                crossViewHeaderDescriptor = new CrossViewHeaderDescriptor(CubeSource.GetXAxisFieldName(i - 1), "", true, false, false);
                            }
                            crossViewHeaderDescriptor.level = i;
                            crossViewHeaderDescriptor.levelsize = XAxisFieldsCount - i;
                            crossViewHeaderDescriptor.cell = cell;
                            crossViewHeaderDescriptor.cellsize = 1;
                            cell += crossViewHeaderDescriptor.cellsize;
                            Columns.Add(crossViewHeaderDescriptor);

                            if ((crossViewHeaderDescriptor.level + crossViewHeaderDescriptor.levelsize == XAxisFieldsCount))
                            {
                                Array.Resize(ref columnTerminalIndexes, columnTerminalIndexes.Length + 1);
                                columnTerminalIndexes[columnTerminalIndexes.Length - 1] = Columns.Count - 1;
                            }
                        }
                    }
                }
                else
                {
                    crossViewHeaderDescriptor = new CrossViewHeaderDescriptor(CubeSource.GetXAxisFieldName(i), "", false, false, false);
                    crossViewHeaderDescriptor.level = i;
                    crossViewHeaderDescriptor.levelsize = 1;
                    crossViewHeaderDescriptor.cell = cell;
                    if (MeasuresInXAxis)
                    {
                        crossViewHeaderDescriptor.cellsize = (XAxisFieldsCount - i - 1) * MeasuresCount;
                        if (crossViewHeaderDescriptor.cellsize == 0)
                            crossViewHeaderDescriptor.cellsize = MeasuresCount;
                    }
                    else
                    {
                        crossViewHeaderDescriptor.cellsize = XAxisFieldsCount - i;
                    }
                    cell += crossViewHeaderDescriptor.cellsize;
                    Columns.Add(crossViewHeaderDescriptor);
                    if ((crossViewHeaderDescriptor.level + crossViewHeaderDescriptor.levelsize == XAxisFieldsCount))
                    {
                        Array.Resize(ref columnTerminalIndexes, columnTerminalIndexes.Length + 1);
                        columnTerminalIndexes[columnTerminalIndexes.Length - 1] = Columns.Count - 1;
                    }

                    Array.Resize(ref rowDescriptorsIndexes, rowDescriptorsIndexes.Length + 1);
                    rowDescriptorsIndexes[rowDescriptorsIndexes.Length - 1] = Columns.Count - 1;

                    if (i == 0)
                    {
                        crossViewHeaderDescriptor = new CrossViewHeaderDescriptor("", "", false, true, false);
                    }
                    else
                    {
                        crossViewHeaderDescriptor = new CrossViewHeaderDescriptor(CubeSource.GetXAxisFieldName(i - 1), "", true, false, false);
                    }
                    crossViewHeaderDescriptor.level = i;
                    crossViewHeaderDescriptor.cell = cell;
                    if (MeasuresInXAxis)
                    {
                        crossViewHeaderDescriptor.levelsize = MeasuresLevel - i;
                        crossViewHeaderDescriptor.cellsize = MeasuresCount;
                    }
                    else
                    {
                        crossViewHeaderDescriptor.levelsize = XAxisFieldsCount - i;
                        crossViewHeaderDescriptor.cellsize = 1;
                    }
                    cell += crossViewHeaderDescriptor.cellsize;
                    Columns.Add(crossViewHeaderDescriptor);

                    if ((crossViewHeaderDescriptor.level + crossViewHeaderDescriptor.levelsize == XAxisFieldsCount))
                    {
                        Array.Resize(ref columnTerminalIndexes, columnTerminalIndexes.Length + 1);
                        columnTerminalIndexes[columnTerminalIndexes.Length - 1] = Columns.Count - 1;
                    }
                }
            }
            if (Columns.Count == 0)
            {
                crossViewHeaderDescriptor = new CrossViewHeaderDescriptor("", "", false, true, false);
                crossViewHeaderDescriptor.level = 0;
                crossViewHeaderDescriptor.levelsize = 1;
                crossViewHeaderDescriptor.cell = 0;
                crossViewHeaderDescriptor.cellsize = 1;
                Columns.Add(crossViewHeaderDescriptor);
                Array.Resize(ref rowDescriptorsIndexes, rowDescriptorsIndexes.Length + 1);
                rowDescriptorsIndexes[rowDescriptorsIndexes.Length - 1] = Columns.Count - 1;
                Array.Resize(ref columnTerminalIndexes, columnTerminalIndexes.Length + 1);
                columnTerminalIndexes[columnTerminalIndexes.Length - 1] = Columns.Count - 1;
            }

            for (int i = 0; i < YAxisFieldsCount; i++)
            {
                cell = 0;
                if (MeasuresInYAxis && (MeasuresLevel <= i))
                {
                    if (MeasuresLevel == i)
                    {
                        for (int k = 0; k <= i; k++)
                        {
                            for (int j = 0; j < MeasuresCount; j++)
                            {
                                if (k == i)
                                {
                                    crossViewHeaderDescriptor = new CrossViewHeaderDescriptor("", CubeSource.GetMeasureName(j), false, false, true);
                                    crossViewHeaderDescriptor.cellsize = 1;
                                    crossViewHeaderDescriptor.levelsize = YAxisFieldsCount - i;
                                }
                                else
                                {
                                    crossViewHeaderDescriptor = new CrossViewHeaderDescriptor(CubeSource.GetYAxisFieldName(k), CubeSource.GetMeasureName(j), false, false, true);
                                    crossViewHeaderDescriptor.cellsize = (YAxisFieldsCount - i);
                                    crossViewHeaderDescriptor.levelsize = 1;
                                }
                                crossViewHeaderDescriptor.level = i;
                                crossViewHeaderDescriptor.cell = cell;
                                cell += crossViewHeaderDescriptor.cellsize;
                                Rows.Add(crossViewHeaderDescriptor);
                                if ((j == 0) && (k == 0))
                                {
                                    Array.Resize(ref columnDescriptorsIndexes, columnDescriptorsIndexes.Length + 1);
                                    columnDescriptorsIndexes[columnDescriptorsIndexes.Length - 1] = Rows.Count - 1;
                                }
                                if ((k == i) || (i == (YAxisFieldsCount - 1)))
                                {
                                    Array.Resize(ref rowTerminalIndexes, rowTerminalIndexes.Length + 1);
                                    rowTerminalIndexes[rowTerminalIndexes.Length - 1] = Rows.Count - 1;
                                }
                            }
                        }
                    }
                    else
                    {
                        for (int j = 0; j < MeasuresCount; j++)
                        {
                            crossViewHeaderDescriptor = new CrossViewHeaderDescriptor(CubeSource.GetYAxisFieldName(i), "", false, false, false);
                            crossViewHeaderDescriptor.level = i;
                            crossViewHeaderDescriptor.levelsize = 1;
                            crossViewHeaderDescriptor.cell = cell;
                            crossViewHeaderDescriptor.cellsize = YAxisFieldsCount - i;
                            cell += crossViewHeaderDescriptor.cellsize;
                            Rows.Add(crossViewHeaderDescriptor);
                            if (j == 0)
                            {
                                Array.Resize(ref columnDescriptorsIndexes, columnDescriptorsIndexes.Length + 1);
                                columnDescriptorsIndexes[columnDescriptorsIndexes.Length - 1] = Rows.Count - 1;
                            }

                            if (i == 1)
                            {
                                crossViewHeaderDescriptor = new CrossViewHeaderDescriptor("", "", false, true, false);
                            }
                            else
                            if (i == (MeasuresLevel + 1))
                            {
                                crossViewHeaderDescriptor = new CrossViewHeaderDescriptor(CubeSource.GetYAxisFieldName(i - 2), "", true, false, false);
                            }
                            else
                            {
                                crossViewHeaderDescriptor = new CrossViewHeaderDescriptor(CubeSource.GetYAxisFieldName(i - 1), "", true, false, false);
                            }
                            crossViewHeaderDescriptor.level = i;
                            crossViewHeaderDescriptor.levelsize = YAxisFieldsCount - i;
                            crossViewHeaderDescriptor.cell = cell;
                            crossViewHeaderDescriptor.cellsize = 1;
                            cell += crossViewHeaderDescriptor.cellsize;
                            Rows.Add(crossViewHeaderDescriptor);

                            if ((crossViewHeaderDescriptor.level + crossViewHeaderDescriptor.levelsize == YAxisFieldsCount))
                            {
                                Array.Resize(ref rowTerminalIndexes, rowTerminalIndexes.Length + 1);
                                rowTerminalIndexes[rowTerminalIndexes.Length - 1] = Rows.Count - 1;
                            }
                        }
                    }
                }
                else
                {
                    crossViewHeaderDescriptor = new CrossViewHeaderDescriptor(CubeSource.GetYAxisFieldName(i), "", false, false, false);
                    crossViewHeaderDescriptor.level = i;
                    crossViewHeaderDescriptor.levelsize = 1;
                    crossViewHeaderDescriptor.cell = cell;
                    if (MeasuresInYAxis)
                    {
                        crossViewHeaderDescriptor.cellsize = (YAxisFieldsCount - i - 1) * MeasuresCount;
                        if (crossViewHeaderDescriptor.cellsize == 0)
                            crossViewHeaderDescriptor.cellsize = MeasuresCount;
                    }
                    else
                    {
                        crossViewHeaderDescriptor.cellsize = YAxisFieldsCount - i;
                    }
                    cell += crossViewHeaderDescriptor.cellsize;
                    Rows.Add(crossViewHeaderDescriptor);
                    if ((crossViewHeaderDescriptor.level + crossViewHeaderDescriptor.levelsize == YAxisFieldsCount))
                    {
                        Array.Resize(ref rowTerminalIndexes, rowTerminalIndexes.Length + 1);
                        rowTerminalIndexes[rowTerminalIndexes.Length - 1] = Rows.Count - 1;
                    }

                    Array.Resize(ref columnDescriptorsIndexes, columnDescriptorsIndexes.Length + 1);
                    columnDescriptorsIndexes[columnDescriptorsIndexes.Length - 1] = Rows.Count - 1;

                    if (i == 0)
                    {
                        crossViewHeaderDescriptor = new CrossViewHeaderDescriptor("", "", false, true, false);
                    }
                    else
                    {
                        crossViewHeaderDescriptor = new CrossViewHeaderDescriptor(CubeSource.GetYAxisFieldName(i - 1), "", true, false, false);
                    }
                    crossViewHeaderDescriptor.level = i;
                    crossViewHeaderDescriptor.cell = cell;
                    if (MeasuresInYAxis)
                    {
                        crossViewHeaderDescriptor.levelsize = MeasuresLevel - i;
                        crossViewHeaderDescriptor.cellsize = MeasuresCount;
                    }
                    else
                    {
                        crossViewHeaderDescriptor.levelsize = YAxisFieldsCount - i;
                        crossViewHeaderDescriptor.cellsize = 1;
                    }
                    cell += crossViewHeaderDescriptor.cellsize;
                    Rows.Add(crossViewHeaderDescriptor);

                    if ((crossViewHeaderDescriptor.level + crossViewHeaderDescriptor.levelsize == YAxisFieldsCount))
                    {
                        Array.Resize(ref rowTerminalIndexes, rowTerminalIndexes.Length + 1);
                        rowTerminalIndexes[rowTerminalIndexes.Length - 1] = Rows.Count - 1;
                    }
                }
            }
            if (Rows.Count == 0)
            {
                crossViewHeaderDescriptor = new CrossViewHeaderDescriptor("", "", false, true, false);
                crossViewHeaderDescriptor.level = 0;
                crossViewHeaderDescriptor.levelsize = 1;
                crossViewHeaderDescriptor.cell = 0;
                crossViewHeaderDescriptor.cellsize = 1;
                Rows.Add(crossViewHeaderDescriptor);
                Array.Resize(ref columnDescriptorsIndexes, columnDescriptorsIndexes.Length + 1);
                columnDescriptorsIndexes[columnDescriptorsIndexes.Length - 1] = Rows.Count - 1;
                Array.Resize(ref rowTerminalIndexes, rowTerminalIndexes.Length + 1);
                rowTerminalIndexes[rowTerminalIndexes.Length - 1] = Rows.Count - 1;
            }
            CrossViewCellDescriptor crossViewCellDescriptor;
            for (int i = 0; i < columnTerminalIndexes.Length; i++)
            {
                for (int j = 0; j < rowTerminalIndexes.Length; j++)
                {
                    crossViewCellDescriptor = new CrossViewCellDescriptor(Columns[columnTerminalIndexes[i]].fieldName, Rows[rowTerminalIndexes[j]].fieldName, Columns[columnTerminalIndexes[i]].measureName + Rows[rowTerminalIndexes[j]].measureName, Columns[columnTerminalIndexes[i]].isTotal, Rows[rowTerminalIndexes[j]].isTotal, Columns[columnTerminalIndexes[i]].isGrandTotal, Rows[rowTerminalIndexes[j]].isGrandTotal);
                    crossViewCellDescriptor.x = i;
                    crossViewCellDescriptor.y = j;
                    Cells.Add(crossViewCellDescriptor);
                }
            }
        }

        internal CrossViewHeaderDescriptor GetRowDescriptor(int index)
        {
            int tempXAxisFieldsCount = (!SourceAssigned) ? 1 : XAxisFieldsCount;
            if (index < tempXAxisFieldsCount)
            {
                return Columns[rowDescriptorsIndexes[index]];
            }
            else
            {
                return Rows[rowTerminalIndexes[index - tempXAxisFieldsCount]];
            }
        }

        internal CrossViewHeaderDescriptor GetColumnDescriptor(int index)
        {
            int tempYAxisFieldsCount = (!SourceAssigned) ? 1 : YAxisFieldsCount;
            if (index < tempYAxisFieldsCount)
            {
                return Rows[columnDescriptorsIndexes[index]];
            }
            else
            {
                return Columns[columnTerminalIndexes[index - tempYAxisFieldsCount]];
            }
        }
        #endregion

        #region Properties
        /// <summary>
        /// Gets a collection of column descriptors.
        /// </summary>
        /// <remarks>
        /// Note: after you change something in this collection, call the 
        /// <see cref="CrossViewObject.BuildTemplate"/> method to refresh the CrossView.
        /// </remarks>
        public CrossViewHeader Columns
        {
            get { return columns; }
        }

        /// <summary>
        /// Gets a collection of row descriptors.
        /// </summary>
        /// <remarks>
        /// Note: after you change something in this collection, call the 
        /// <see cref="CrossViewObject.BuildTemplate"/> method to refresh the CrossView.
        /// </remarks>
        public CrossViewHeader Rows
        {
            get { return rows; }
        }

        /// <summary>
        /// Gets a collection of data cell descriptors.
        /// </summary>
        /// <remarks>
        /// Note: after you change something in this collection, call the 
        /// <see cref="CrossViewObject.BuildTemplate"/> method to refresh the CrossView.
        /// </remarks>
        public CrossViewCells Cells
        {
            get { return cells; }
        }

        #endregion

        #region Public Methods
        #endregion

        internal CrossViewData()
        {
            columns = new CrossViewHeader();
            columns.Name = "CrossViewColumns";
            rows = new CrossViewHeader();
            rows.Name = "CrossViewRows";
            cells = new CrossViewCells();
            cells.Name = "CrossViewCells";
            CreateDescriptors();
        }
    }
}