// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.

using System.ComponentModel;
using System.Text;
using System.Xml.Serialization;

namespace System.Xml.Schema
{
    public class XmlSchemaAny : XmlSchemaParticle
    {
        private string? _ns;
        private XmlSchemaContentProcessing _processContents = XmlSchemaContentProcessing.None;
        private NamespaceList? _namespaceList;

        [XmlAttribute("namespace")]
        public string? Namespace
        {
            get { return _ns; }
            set { _ns = value; }
        }

        [XmlAttribute("processContents"), DefaultValue(XmlSchemaContentProcessing.None)]
        public XmlSchemaContentProcessing ProcessContents
        {
            get { return _processContents; }
            set { _processContents = value; }
        }

        [XmlIgnore]
        internal NamespaceList? NamespaceList
        {
            get { return _namespaceList; }
        }

        [XmlIgnore]
        internal string ResolvedNamespace
        {
            get
            {
                if (string.IsNullOrEmpty(_ns))
                {
                    return "##any";
                }
                return _ns;
            }
        }

        [XmlIgnore]
        internal XmlSchemaContentProcessing ProcessContentsCorrect
        {
            get { return _processContents == XmlSchemaContentProcessing.None ? XmlSchemaContentProcessing.Strict : _processContents; }
        }

        internal override string NameString
        {
            get
            {
                switch (_namespaceList!.Type)
                {
                    case NamespaceList.ListType.Any:
                        return "##any:*";

                    case NamespaceList.ListType.Other:
                        return "##other:*";

                    case NamespaceList.ListType.Set:
                        StringBuilder sb = new StringBuilder();
                        int i = 1;
                        foreach (string wildcardNS in _namespaceList.Enumerate)
                        {
                            sb.Append($"{wildcardNS}:*");
                            if (i < _namespaceList.Enumerate.Count)
                            {
                                sb.Append(' ');
                            }
                            i++;
                        }
                        return sb.ToString();

                    default:
                        return string.Empty;
                }
            }
        }

        internal void BuildNamespaceList(string? targetNamespace)
        {
            if (_ns != null)
            { //If namespace="" default to namespace="##any"
                _namespaceList = new NamespaceList(_ns, targetNamespace!);
            }
            else
            {
                _namespaceList = new NamespaceList();
            }
        }

        internal void BuildNamespaceListV1Compat(string targetNamespace)
        {
            if (_ns != null)
            {
                _namespaceList = new NamespaceListV1Compat(_ns, targetNamespace);
            }
            else
            {
                _namespaceList = new NamespaceList(); //This is only ##any, hence base class is sufficient
            }
        }

        internal bool Allows(XmlQualifiedName qname)
        {
            return _namespaceList!.Allows(qname.Namespace);
        }
    }
}