PackagePartDefinition.cs

/*
 * NanoXLSX is a small .NET library to generate and read XLSX (Microsoft Excel 2007 or newer) files in an easy and native way
 * Copyright Raphael Stoeckli © 2026
 * This library is licensed under the MIT License.
 * You find a copy of the license in project folder or on: http://opensource.org/licenses/MIT
 */
 
using NanoXLSX.Interfaces.Writer;
using System.Collections.Generic;
using System.IO.Packaging;
using System.Linq;
 
namespace NanoXLSX.Internal.Structures
{
    internal class PackagePartDefinition
    {
 
        #region staticFields
        internal const int WORKBOOK_PACKAGE_PART_INDEX = 0;
        internal const int METADATA_PACKAGE_PART_START_INDEX = 1000;
        internal const int WORKSHEET_PACKAGE_PART_START_INDEX = 10000;
        internal const int POST_WORkSHEET_PACKAGE_PART_START_INDEX = 2000000;
        #endregion
 
        #region enums
        internal enum PackagePartType
        {
            Root,
            Worksheet,
            Other,
        }
        #endregion

        public DocumentPath Path { get; private set; }
        public PackagePartType PartType { get; private set; }
        public int OrderNumber { get; private set; }
        public string ContentType { get; private set; }
        public string RelationshipType { get; private set; }
        internal string UniquePackagePartIndex { get; private set; }
        internal IReadOnlyList<PackagePartRelationshipDefinition> Relationships { get; private set; }

        public PackagePartDefinition(PackagePartType type, int orderNumber, string fileNameInPackage, string pathInPackage, string contentType, string relationshipType)
            : this(type, orderNumber, new DocumentPath(fileNameInPackage, pathInPackage), contentType, relationshipType)
        { }

        internal PackagePartDefinition(PackagePartType type, int orderNumber, DocumentPath documentPath, string contentType, string relationshipType)
            : this(type, orderNumber, documentPath, contentType, relationshipType, null)
        {
        }

        internal PackagePartDefinition(PackagePartType type, int orderNumber, DocumentPath documentPath, string contentType, string relationshipType, string uniquePackagePartIndex)
            : this(type, orderNumber, documentPath, contentType, relationshipType, uniquePackagePartIndex, null)
        {
        }

        internal PackagePartDefinition(PackagePartType type, int orderNumber, DocumentPath documentPath, string contentType, string relationshipType, string uniquePackagePartIndex, IReadOnlyList<IPluginPackageRelationship> relationships)
        {
            this.PartType = type;
            this.OrderNumber = orderNumber;
            this.Path = documentPath;
            this.ContentType = contentType;
            this.RelationshipType = relationshipType;
            this.UniquePackagePartIndex = uniquePackagePartIndex;
            this.Relationships = relationships == null
                ? new List<PackagePartRelationshipDefinition>()
                : relationships.Select(relationship => new PackagePartRelationshipDefinition(relationship)).ToList();
        }

        internal int GetWorksheetIndex()
        {
            return this.OrderNumber - WORKSHEET_PACKAGE_PART_START_INDEX;
        }

        internal static List<PackagePartDefinition> Sort(List<PackagePartDefinition> packagePartDefinitions)
        {
            return packagePartDefinitions.OrderBy(p => p.OrderNumber).ToList();
        }
    }

    internal sealed class PackagePartRelationshipDefinition
    {
        internal string RelationshipId { get; private set; }
        internal string RelationshipType { get; private set; }
        internal string Target { get; private set; }
        internal TargetMode TargetMode { get; private set; }
 
        internal PackagePartRelationshipDefinition(IPluginPackageRelationship relationship)
        {
            RelationshipId = relationship.RelationshipId;
            RelationshipType = relationship.RelationshipType;
            Target = relationship.Target;
            TargetMode = relationship.TargetMode;
        }
    }
 
}