using DocumentFormat.OpenXml.Packaging;
using Ap = DocumentFormat.OpenXml.ExtendedProperties;
using Vt = DocumentFormat.OpenXml.VariantTypes;
using DocumentFormat.OpenXml;
using DocumentFormat.OpenXml.Spreadsheet;
using Xdr = DocumentFormat.OpenXml.Drawing.Spreadsheet;
using A = DocumentFormat.OpenXml.Drawing;
using C = DocumentFormat.OpenXml.Drawing.Charts;
using System.Linq;


namespace ExcelExport
{
    public class ExportBase
    {
        private System.Collections.Generic.Dictionary<string, string> _cellLookup = new System.Collections.Generic.Dictionary<string, string>();
        protected string GetCell(string key)
        {
            if (_cellLookup.ContainsKey(key)) { return _cellLookup[key]; }
            System.Diagnostics.Trace.WriteLine("missing key " + key);
            throw new System.NotImplementedException(key);
        }
        protected void AddCollectionReference(string key, string reference)
        {
            if (!_cellLookup.ContainsKey(key)) { _cellLookup.Add(key, reference); }
        }

        protected CalculationChain _calculationChain1 = new CalculationChain();
        protected void InsertCalculation(string cellReference, int sheetid, bool newLevel)
        {
            _calculationChain1.Append(new CalculationCell()
            {
                CellReference = cellReference,
                SheetId = sheetid,
                NewLevel = newLevel
            });
        }

        private System.Collections.Generic.Dictionary<string, int> _items = new System.Collections.Generic.Dictionary<string, int>();
        protected SharedStringTablePart _sharedStringTablePart;
        protected int InsertSharedStringItem(string text)
        {
            if (string.IsNullOrEmpty(text)) { text = ""; }
            if (_items.ContainsKey(text)) { return _items[text]; }
            // The text does not exist in the part. Create the SharedStringItem and return its index.
            _sharedStringTablePart.SharedStringTable.AppendChild(new SharedStringItem(new DocumentFormat.OpenXml.Spreadsheet.Text(text)));
            _sharedStringTablePart.SharedStringTable.Save();
            _items.Add(text, _items.Keys.Count);
            return (_items.Keys.Count - 1);
        }

        protected Cell CreateTextCell(string reference, string value)
        {
            Cell c = new Cell() { CellReference = reference, DataType = CellValues.SharedString };
            CellValue cv = new CellValue() { Text = InsertSharedStringItem(value).ToString() };
            c.Append(cv);
            return c;
        }
        protected Cell CreateNumericCell(string column, double[] data, int index)
        {
            Cell c = new Cell() { CellReference = string.Format("{0}{1}", column, 2 + index) };
            if (index < data.Length)
            {
                CellValue cv = new CellValue() { Text = data[index].ToString() };
                c.Append(cv);
            }
            return c;
        }
        protected Cell CreateNumericCell(string reference, uint style, double value)
        {
            Cell c = new Cell() { CellReference = reference, StyleIndex = (UInt32Value)style };
            c.Append(new CellValue() { Text = value.ToString() });
            return c;
        }
        protected Cell CreateStylizedTextCell(string reference, UInt32Value style, string text)
        {
            Cell c = new Cell() { CellReference = reference, StyleIndex = style, DataType = CellValues.SharedString };
            CellValue cv = new CellValue() { Text = InsertSharedStringItem(text).ToString() };
            c.Append(cv);
            
            return c;
        }
        protected Cell CreateStylizedTextCell(string reference, UInt32Value style, string text, string key)
        {
            if (string.IsNullOrEmpty(text)) { text = ""; }
            Cell c = new Cell() { CellReference = reference, StyleIndex = style, DataType = CellValues.String };
            CellValue cv = new CellValue() { Text = text };
            InsertCalculation(reference, 2, true);
            c.Append(new CellFormula() { Text = string.Format("\'Top page\'!{0}", GetCell(key)) });
            c.Append(cv);

            return c;
        }
    }
}