From defe1c53aa02a20d1c3450a72247d6eef0aaade8 Mon Sep 17 00:00:00 2001
From: Matt Nadareski <mnadareski@outlook.com>
Date: Tue, 24 Oct 2023 23:33:53 -0400
Subject: [PATCH] Port a version of XgdInfo from MPF

---
 Wrappers/XgdInfo.cs | 190 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 190 insertions(+)
 create mode 100644 Wrappers/XgdInfo.cs

diff --git a/Wrappers/XgdInfo.cs b/Wrappers/XgdInfo.cs
new file mode 100644
index 00000000..722fc293
--- /dev/null
+++ b/Wrappers/XgdInfo.cs
@@ -0,0 +1,190 @@
+namespace SabreTools.Serialization.Wrappers
+{
+    /// <summary>
+    /// Contains information specific to an XGD disc
+    /// </summary>
+    /// TODO: Convert this to a proper WrapperBase implementation
+    public class XgdInfo
+    {
+        #region Properties
+
+        /// <summary>
+        /// Indicates whether the information in this object is fully instantiated or not
+        /// </summary>
+        public bool Initialized { get; private set; }
+
+        /// <summary>
+        /// Raw XMID/XeMID string that all other information is derived from
+        /// </summary>
+#if NET48
+        public string RawXMID { get; private set; }
+#else
+        public string? RawXMID { get; private set; }
+#endif
+
+        /// <summary>
+        /// XGD1 XMID
+        /// </summary>
+#if NET48
+        public Models.Xbox.XMID XMID { get; private set; }
+#else
+        public Models.Xbox.XMID? XMID { get; private set; }
+#endif
+
+        /// <summary>
+        /// XGD2/3 XeMID
+        /// </summary>
+#if NET48
+        public Models.Xbox.XeMID XeMID { get; private set; }
+#else
+        public Models.Xbox.XeMID? XeMID { get; private set; }
+#endif
+
+        #endregion
+
+        #region Extension Properties
+
+        /// <summary>
+        /// Get the human-readable serial string
+        /// </summary>
+#if NET48
+        public string Serial
+#else
+        public string? Serial
+#endif
+        {
+            get
+            {
+                if (!this.Initialized)
+                    return null;
+
+                try
+                {
+                    // XGD1 doesn't use PlatformIdentifier
+                    if (XMID != null)
+                        return $"{XMID.PublisherIdentifier}-{XMID.GameID}";
+
+                    // XGD2/3 uses a specific identifier
+                    else if (XeMID?.PlatformIdentifier == '2')
+                        return $"{XeMID.PublisherIdentifier}-{XeMID.PlatformIdentifier}{XeMID.GameID}";
+
+                    return null;
+                }
+                catch
+                {
+                    return null;
+                }
+            }
+        }
+
+        /// <summary>
+        /// Get the human-readable version string
+        /// </summary>
+#if NET48
+        public string Version
+#else
+        public string? Version
+#endif
+        {
+            get
+            {
+                if (!this.Initialized)
+                    return null;
+
+                try
+                {
+                    // XGD1 doesn't use PlatformIdentifier
+                    if (XMID != null)
+                        return $"1.{XMID.VersionNumber}";
+
+                    // XGD2/3 uses a specific identifier
+                    else if (XeMID?.PlatformIdentifier == '2')
+                        return $"1.{XeMID.SKU}";
+
+                    return null;
+                }
+                catch
+                {
+                    return null;
+                }
+            }
+        }
+
+        #endregion
+
+        #region Constructors
+
+        /// <summary>
+        /// Populate a set of XGD information from a Master ID (XMID/XeMID) string
+        /// </summary>
+        /// <param name="xmid">XMID/XeMID string representing the DMI information</param>
+        public XgdInfo(string xmid)
+        {
+            this.Initialized = false;
+            if (string.IsNullOrWhiteSpace(xmid))
+                return;
+
+            this.RawXMID = xmid.TrimEnd('\0');
+            if (string.IsNullOrWhiteSpace(this.RawXMID))
+                return;
+
+            // XGD1 information is 8 characters
+            if (this.RawXMID.Length == 8)
+                this.Initialized = ParseXGD1XMID(this.RawXMID);
+
+            // XGD2/3 information is semi-variable length
+            else if (this.RawXMID.Length == 13 || this.RawXMID.Length == 14 || this.RawXMID.Length == 21 || this.RawXMID.Length == 22)
+                this.Initialized = ParseXGD23XeMID(this.RawXMID);
+        }
+
+        #endregion
+
+        #region Helpers
+
+        /// <summary>
+        /// Parse an XGD1 XMID string
+        /// </summary>
+        /// <param name="rawXmid">XMID string to attempt to parse</param>
+        /// <returns>True if the XMID could be parsed, false otherwise</returns>
+        private bool ParseXGD1XMID(string rawXmid)
+        {
+            try
+            {
+                var xmid = new Strings.XMID().Deserialize(rawXmid);
+                if (xmid == null)
+                    return false;
+
+                this.XMID = xmid;
+                return true;
+            }
+            catch
+            {
+                return false;
+            }
+        }
+
+        /// <summary>
+        /// Parse an XGD2/3 XeMID string
+        /// </summary>
+        /// <param name="rawXemid">XeMID string to attempt to parse</param>
+        /// <returns>True if the XeMID could be parsed, false otherwise</returns>
+        private bool ParseXGD23XeMID(string rawXemid)
+        {
+            try
+            {
+                var xemid = new Strings.XeMID().Deserialize(rawXemid);
+                if (xemid == null)
+                    return false;
+
+                this.XeMID = xemid;
+                return true;
+            }
+            catch
+            {
+                return false;
+            }
+        }
+
+        #endregion
+    }
+}