using System;
using System.Collections.Generic;
using System.Text;
using FastReport.Table;
using FastReport.Utils;

namespace FastReport.CrossView
{
    /// <summary>
    /// The descriptor that is used to describe one element of the CrossView header.
    /// </summary>
    /// <remarks>
    /// The <see cref="CrossViewHeaderDescriptor"/> class is used to define one header element of the CrossView
    /// (either the column element or row element). 
    /// <para/>To set visual appearance of the element, use the <see cref="CrossViewDescriptor.TemplateCell"/> 
    /// property.
    /// <para/>The collection of descriptors used to represent the CrossView header is stored
    /// in the <b>CrossViewObject.Data.Columns</b> and <b>CrossViewObject.Data.Rows</b> properties.
    /// </remarks>
    public class CrossViewHeaderDescriptor : CrossViewDescriptor
    {
        #region Fields
        internal string fieldName = "";
        internal string measureName = "";
        internal bool isGrandTotal;
        internal bool isTotal;
        internal bool isMeasure;

        internal int level = 0;
        internal int cell = 0;
        internal int levelsize = 1;
        internal int cellsize = 1;
        #endregion

        #region Properties
        /// <summary>
        /// Gets a value indicating that this is the "GrandTotal" element.
        /// </summary>
        public bool IsGrandTotal
        {
            set { isGrandTotal = value; }
            get { return isGrandTotal; }
        }

        /// <summary>
        /// Gets a value indicating that this is the "Total" element.
        /// </summary>
        public bool IsTotal
        {
            set { isTotal = value; }
            get { return isTotal; }
        }

        /// <summary>
        /// Gets a value indicating that this is the "Measure" element.
        /// </summary>
        public bool IsMeasure
        {
            set { isMeasure = value; }
            get { return isMeasure; }
        }

        /// <summary>
        /// Gets the name of field in cube.
        /// </summary>
        public string FieldName
        {
            set { fieldName = value; }
            get { return fieldName; }
        }

        /// <summary>
        /// Gets the name of measure in cube.
        /// </summary>
        public string MeasureName
        {
            set { measureName = value; }
            get { return measureName; }
        }

        /// <summary>
        /// Gets the cell coordinate.
        /// </summary>
        public int Cell
        {
            set { cell = value; }
            get { return cell; }
        }

        /// <summary>
        /// Gets the size in cell coordinate.
        /// </summary>
        public int CellSize
        {
            set { cellsize = value; }
            get { return cellsize; }
        }

        /// <summary>
        /// Gets the level coordinate.
        /// </summary>
        public int Level
        {
            set { level = value; }
            get { return level; }
        }

        /// <summary>
        /// Gets the size in level coordinate.
        /// </summary>
        public int LevelSize
        {
            set { levelsize = value; }
            get { return levelsize; }
        }
        #endregion

        #region Public Methods
        /// <inheritdoc/>
        public override void Assign(CrossViewDescriptor source)
        {
            base.Assign(source);
            CrossViewHeaderDescriptor src = source as CrossViewHeaderDescriptor;
            if (src != null)
            {
                isTotal = src.isTotal;
                isGrandTotal = src.isGrandTotal;
                fieldName = src.fieldName;
                measureName = src.measureName;
                isMeasure = src.isMeasure;
                level = src.level;
                levelsize = src.levelsize;
                cell = src.cell;
                cellsize = src.cellsize;
            }
        }

        /// <inheritdoc/>
        public override void Serialize(FRWriter writer)
        {
            CrossViewHeaderDescriptor c = writer.DiffObject as CrossViewHeaderDescriptor;
            base.Serialize(writer);

            writer.ItemName = "Header";
            if (IsTotal != c.IsTotal)
                writer.WriteBool("IsTotal", IsTotal);
            if (IsGrandTotal != c.IsGrandTotal)
                writer.WriteBool("IsGrandTotal", IsGrandTotal);
            if (FieldName != c.FieldName)
                writer.WriteStr("FieldName", FieldName);
            if (MeasureName != c.MeasureName)
                writer.WriteStr("MeasureName", MeasureName);
            if (IsMeasure != c.IsMeasure)
                writer.WriteBool("IsMeasure", IsMeasure);
            if (Cell != c.Cell)
                writer.WriteInt("Cell", Cell);
            if (CellSize != c.CellSize)
                writer.WriteInt("CellSize", CellSize);
            if (Level != c.Level)
                writer.WriteInt("Level", Level);
            if (LevelSize != c.LevelSize)
                writer.WriteInt("LevelSize", LevelSize);
        }

        internal string GetName()
        {
            if (isGrandTotal)
            {
                return "GrandTotal";
            };
            if (IsMeasure)
            {
                return measureName;
            };
            if (isTotal)
            {
                return "Total of " + fieldName;
            };
            return fieldName;
        }
        #endregion

        /// <summary>
        /// Initializes a new instance of the <see cref="CrossViewHeaderDescriptor"/> class
        /// </summary>
        /// <param name="fieldName">The Field Name.</param>
        /// <param name="measureName">The Measure Name.</param>
        /// <param name="isTotal">Indicates the "Total" element.</param>
        /// <param name="isGrandTotal">Indicates the "GrandTotal" element.</param>
        /// <param name="isMeasure">Indicates the "Measure" element.</param>
        public CrossViewHeaderDescriptor(string fieldName, string measureName, bool isTotal, bool isGrandTotal, bool isMeasure)
        {
            this.isGrandTotal = isGrandTotal;
            this.fieldName = fieldName;
            this.measureName = measureName;
            this.isTotal = isTotal;
            this.isMeasure = isMeasure;
        }

        /// <summary>
        /// Initializes a new instance of the <see cref="CrossViewHeaderDescriptor"/> class
        /// </summary>
        public CrossViewHeaderDescriptor()
            : this("", "", false, false, false)
        {
        }
    }
}