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

using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.Diagnostics.CodeAnalysis;
using System.IO;
using System.Reflection;
using System.Runtime.Serialization.DataContracts;
using System.Text.RegularExpressions;
using System.Xml;
using System.Xml.Schema;
using System.Xml.Serialization;

namespace System.Runtime.Serialization
{
    internal static partial class Globals
    {
        /// <SecurityNote>
        /// Review - changes to const could affect code generation logic; any changes should be reviewed.
        /// </SecurityNote>
        internal const BindingFlags ScanAllMembers = BindingFlags.Static | BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public;

        internal static XmlQualifiedName IdQualifiedName => field ??= new XmlQualifiedName(Globals.IdLocalName, Globals.SerializationNamespace);
        internal static XmlQualifiedName RefQualifiedName => field ??= new XmlQualifiedName(Globals.RefLocalName, Globals.SerializationNamespace);
        [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.NonPublicFields)]
        internal static Type TypeOfSchemaDefinedType => typeof(SchemaDefinedType);

        [DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.NonPublicFields)]
        internal static Type TypeOfSchemaDefinedEnum => typeof(SchemaDefinedEnum);

        internal static MemberInfo SchemaMemberInfoPlaceholder => field ??= TypeOfSchemaDefinedType.GetField(nameof(SchemaDefinedType._xmlName), BindingFlags.NonPublic | BindingFlags.Instance)!;
        internal static Uri DataContractXsdBaseNamespaceUri => field ??= new Uri(DataContractXsdBaseNamespace);

        public const bool DefaultIsRequired = false;
        public const bool DefaultEmitDefaultValue = true;
        public const int DefaultOrder = 0;
        public const bool DefaultIsReference = false;
        // The value string.Empty aids comparisons (can do simple length checks
        //     instead of string comparison method calls in IL.)
        public static readonly string NewObjectId = string.Empty;
        public const string NullObjectId = null;
        public const string FullSRSInternalsVisiblePattern = @"^[\s]*System\.Runtime\.Serialization[\s]*,[\s]*PublicKey[\s]*=[\s]*(?i:00240000048000009400000006020000002400005253413100040000010001008d56c76f9e8649383049f383c44be0ec204181822a6c31cf5eb7ef486944d032188ea1d3920763712ccb12d75fb77e9811149e6148e5d32fbaab37611c1878ddc19e20ef135d0cb2cff2bfec3d115810c3d9069638fe4be215dbf795861920e5ab6f7db2e2ceef136ac23d5dd2bf031700aec232f6c6b1c785b4305c123b37ab)[\s]*$";
        [GeneratedRegex(FullSRSInternalsVisiblePattern)]
        public static partial Regex FullSRSInternalsVisibleRegex { get; }
        public const char SpaceChar = ' ';
        public const char OpenBracketChar = '[';
        public const char CloseBracketChar = ']';
        public const char CommaChar = ',';
        public const string Space = " ";
        public const string XsiPrefix = "i";
        public const string XsdPrefix = "x";
        public const string SerPrefix = "z";
        public const string SerPrefixForSchema = "ser";
        public const string ElementPrefix = "q";
        public const string DataContractXsdBaseNamespace = "http://schemas.datacontract.org/2004/07/";
        public const string DataContractXmlNamespace = DataContractXsdBaseNamespace + "System.Xml";
        public const string SchemaInstanceNamespace = "http://www.w3.org/2001/XMLSchema-instance";
        public const string SchemaNamespace = "http://www.w3.org/2001/XMLSchema";
        public const string XsiNilLocalName = "nil";
        public const string XsiTypeLocalName = "type";
        public const string TnsPrefix = "tns";
        public const string OccursUnbounded = "unbounded";
        public const string AnyTypeLocalName = "anyType";
        public const string StringLocalName = "string";
        public const string IntLocalName = "int";
        public const string True = "true";
        public const string False = "false";
        public const string ArrayPrefix = "ArrayOf";
        public const string XmlnsNamespace = "http://www.w3.org/2000/xmlns/";
        public const string XmlnsPrefix = "xmlns";
        public const string SchemaLocalName = "schema";
        public const string CollectionsNamespace = "http://schemas.microsoft.com/2003/10/Serialization/Arrays";
        public const string DefaultClrNamespace = "GeneratedNamespace";
        public const string DefaultTypeName = "GeneratedType";
        public const string DefaultGeneratedMember = "GeneratedMember";
        public const string DefaultFieldSuffix = "Field";
        public const string DefaultPropertySuffix = "Property";
        public const string DefaultMemberSuffix = "Member";
        public const string NameProperty = "Name";
        public const string NamespaceProperty = "Namespace";
        public const string OrderProperty = "Order";
        public const string IsReferenceProperty = "IsReference";
        public const string IsRequiredProperty = "IsRequired";
        public const string EmitDefaultValueProperty = "EmitDefaultValue";
        public const string ClrNamespaceProperty = "ClrNamespace";
        public const string ItemNameProperty = "ItemName";
        public const string KeyNameProperty = "KeyName";
        public const string ValueNameProperty = "ValueName";
        public const string SerializationInfoPropertyName = "SerializationInfo";
        public const string SerializationInfoFieldName = "info";
        public const string NodeArrayPropertyName = "Nodes";
        public const string NodeArrayFieldName = "nodesField";
        public const string ExportSchemaMethod = "ExportSchema";
        public const string IsAnyProperty = "IsAny";
        public const string ContextFieldName = "context";
        public const string GetObjectDataMethodName = "GetObjectData";
        public const string GetEnumeratorMethodName = "GetEnumerator";
        public const string MoveNextMethodName = "MoveNext";
        public const string AddValueMethodName = "AddValue";
        public const string CurrentPropertyName = "Current";
        public const string ValueProperty = "Value";
        public const string EnumeratorFieldName = "enumerator";
        public const string SerializationEntryFieldName = "entry";
        public const string ExtensionDataSetMethod = "set_ExtensionData";
        public const string ExtensionDataSetExplicitMethod = "System.Runtime.Serialization.IExtensibleDataObject.set_ExtensionData";
        public const string ExtensionDataObjectPropertyName = "ExtensionData";
        public const string ExtensionDataObjectFieldName = "extensionDataField";
        public const string AddMethodName = "Add";
        public const string GetCurrentMethodName = "get_Current";
        // NOTE: These values are used in schema below. If you modify any value, please make the same change in the schema.
        public const string SerializationNamespace = "http://schemas.microsoft.com/2003/10/Serialization/";
        public const string ClrTypeLocalName = "Type";
        public const string ClrAssemblyLocalName = "Assembly";
        public const string IsValueTypeLocalName = "IsValueType";
        public const string EnumerationValueLocalName = "EnumerationValue";
        public const string SurrogateDataLocalName = "Surrogate";
        public const string GenericTypeLocalName = "GenericType";
        public const string GenericParameterLocalName = "GenericParameter";
        public const string GenericNameAttribute = "Name";
        public const string GenericNamespaceAttribute = "Namespace";
        public const string GenericParameterNestedLevelAttribute = "NestedLevel";
        public const string IsDictionaryLocalName = "IsDictionary";
        public const string ActualTypeLocalName = "ActualType";
        public const string ActualTypeNameAttribute = "Name";
        public const string ActualTypeNamespaceAttribute = "Namespace";
        public const string DefaultValueLocalName = "DefaultValue";
        public const string EmitDefaultValueAttribute = "EmitDefaultValue";
        public const string IdLocalName = "Id";
        public const string RefLocalName = "Ref";
        public const string ArraySizeLocalName = "Size";
        public const string KeyLocalName = "Key";
        public const string ValueLocalName = "Value";
        public const string MscorlibAssemblyName = "0";
        public const string ParseMethodName = "Parse";
        public const string SafeSerializationManagerName = "SafeSerializationManager";
        public const string SafeSerializationManagerNamespace = "http://schemas.datacontract.org/2004/07/System.Runtime.Serialization";
        public const string ISerializableFactoryTypeLocalName = "FactoryType";
        public const string SerializationSchema = @"<?xml version='1.0' encoding='utf-8'?>
<xs:schema elementFormDefault='qualified' attributeFormDefault='qualified' xmlns:tns='http://schemas.microsoft.com/2003/10/Serialization/' targetNamespace='http://schemas.microsoft.com/2003/10/Serialization/' xmlns:xs='http://www.w3.org/2001/XMLSchema'>
  <xs:element name='anyType' nillable='true' type='xs:anyType' />
  <xs:element name='anyURI' nillable='true' type='xs:anyURI' />
  <xs:element name='base64Binary' nillable='true' type='xs:base64Binary' />
  <xs:element name='boolean' nillable='true' type='xs:boolean' />
  <xs:element name='byte' nillable='true' type='xs:byte' />
  <xs:element name='dateTime' nillable='true' type='xs:dateTime' />
  <xs:element name='decimal' nillable='true' type='xs:decimal' />
  <xs:element name='double' nillable='true' type='xs:double' />
  <xs:element name='float' nillable='true' type='xs:float' />
  <xs:element name='int' nillable='true' type='xs:int' />
  <xs:element name='long' nillable='true' type='xs:long' />
  <xs:element name='QName' nillable='true' type='xs:QName' />
  <xs:element name='short' nillable='true' type='xs:short' />
  <xs:element name='string' nillable='true' type='xs:string' />
  <xs:element name='unsignedByte' nillable='true' type='xs:unsignedByte' />
  <xs:element name='unsignedInt' nillable='true' type='xs:unsignedInt' />
  <xs:element name='unsignedLong' nillable='true' type='xs:unsignedLong' />
  <xs:element name='unsignedShort' nillable='true' type='xs:unsignedShort' />
  <xs:element name='char' nillable='true' type='tns:char' />
  <xs:simpleType name='char'>
    <xs:restriction base='xs:int'/>
  </xs:simpleType>
  <xs:element name='duration' nillable='true' type='tns:duration' />
  <xs:simpleType name='duration'>
    <xs:restriction base='xs:duration'>
      <xs:pattern value='\-?P(\d*D)?(T(\d*H)?(\d*M)?(\d*(\.\d*)?S)?)?' />
      <xs:minInclusive value='-P10675199DT2H48M5.4775808S' />
      <xs:maxInclusive value='P10675199DT2H48M5.4775807S' />
    </xs:restriction>
  </xs:simpleType>
  <xs:element name='guid' nillable='true' type='tns:guid' />
  <xs:simpleType name='guid'>
    <xs:restriction base='xs:string'>
      <xs:pattern value='[\da-fA-F]{8}-[\da-fA-F]{4}-[\da-fA-F]{4}-[\da-fA-F]{4}-[\da-fA-F]{12}' />
    </xs:restriction>
  </xs:simpleType>
  <xs:attribute name='FactoryType' type='xs:QName' />
  <xs:attribute name='Id' type='xs:ID' />
  <xs:attribute name='Ref' type='xs:IDREF' />
  <xs:simpleType name='dateOnly'>
    <xs:restriction base='xs:date'>
      <xs:pattern value='([0-9]{4})-(0[1-9]|1[0-2])-(0[1-9]|[12][0-9]|3[01])' />
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name='timeOnly'>
    <xs:restriction base='xs:time'>
      <xs:pattern value='([01][0-9]|2[0-3]):([0-5][0-9])(:([0-5][0-9])(\.[0-9]{1,7})?)?' />
    </xs:restriction>
  </xs:simpleType>
</xs:schema>
";
    }
}