From 827eb94f3c272e58d53dcb76a1d804dcf85258ab Mon Sep 17 00:00:00 2001
From: Kurt <kaphotics@gmail.com>
Date: Thu, 16 May 2019 22:26:51 -0700
Subject: [PATCH] Add GameSync r/w for lgpe

https://projectpokemon.org/home/forums/topic/52797-request-lgpe-game-sync-like-value-to-be-added/

ty @PP-theSLAYER !
---
 PKHeX.Core/Saves/SAV7b.cs                     | 45 ++++++++++---------
 .../Saves/Substructures/Gen7/MyStatus7b.cs    | 25 +++++++++++
 2 files changed, 49 insertions(+), 21 deletions(-)

diff --git a/PKHeX.Core/Saves/SAV7b.cs b/PKHeX.Core/Saves/SAV7b.cs
index 66bf82775..97f42d7c6 100644
--- a/PKHeX.Core/Saves/SAV7b.cs
+++ b/PKHeX.Core/Saves/SAV7b.cs
@@ -109,27 +109,27 @@ public SAV7b(byte[] data)
 
         private static readonly BlockInfo[] BlockInfoGG =
         {
-            new BlockInfo3DS {Length = 3472, Offset = 0},
-            new BlockInfo3DS {Length = 512, Offset = 3584},
-            new BlockInfo3DS {Length = 360, Offset = 4096},
-            new BlockInfo3DS {Length = 6144, Offset = 4608},
-            new BlockInfo3DS {Length = 8424, Offset = 10752},
-            new BlockInfo3DS {Length = 2352, Offset = 19456},
-            new BlockInfo3DS {Length = 4, Offset = 22016},
-            new BlockInfo3DS {Length = 304, Offset = 22528},
-            new BlockInfo3DS {Length = 18, Offset = 23040},
-            new BlockInfo3DS {Length = 260000, Offset = 23552},
-            new BlockInfo3DS {Length = 8, Offset = 283648},
-            new BlockInfo3DS {Length = 3728, Offset = 284160},
-            new BlockInfo3DS {Length = 4260, Offset = 288256},
-            new BlockInfo3DS {Length = 240, Offset = 292864},
-            new BlockInfo3DS {Length = 24592, Offset = 293376},
-            new BlockInfo3DS {Length = 512, Offset = 318464},
-            new BlockInfo3DS {Length = 152, Offset = 318976},
-            new BlockInfo3DS {Length = 104, Offset = 319488},
-            new BlockInfo3DS {Length = 432000, Offset = 320000},
-            new BlockInfo3DS {Length = 176, Offset = 752128},
-            new BlockInfo3DS {Length = 2368, Offset = 752640},
+            new BlockInfo3DS {Offset = 0x00000, Length = 0x00D90},
+            new BlockInfo3DS {Offset = 0x00E00, Length = 0x00200},
+            new BlockInfo3DS {Offset = 0x01000, Length = 0x00168},
+            new BlockInfo3DS {Offset = 0x01200, Length = 0x01800},
+            new BlockInfo3DS {Offset = 0x02A00, Length = 0x020E8},
+            new BlockInfo3DS {Offset = 0x04C00, Length = 0x00930},
+            new BlockInfo3DS {Offset = 0x05600, Length = 0x00004},
+            new BlockInfo3DS {Offset = 0x05800, Length = 0x00130},
+            new BlockInfo3DS {Offset = 0x05A00, Length = 0x00012},
+            new BlockInfo3DS {Offset = 0x05C00, Length = 0x3F7A0},
+            new BlockInfo3DS {Offset = 0x45400, Length = 0x00008},
+            new BlockInfo3DS {Offset = 0x45600, Length = 0x00E90},
+            new BlockInfo3DS {Offset = 0x46600, Length = 0x010A4},
+            new BlockInfo3DS {Offset = 0x47800, Length = 0x000F0},
+            new BlockInfo3DS {Offset = 0x47A00, Length = 0x06010},
+            new BlockInfo3DS {Offset = 0x4DC00, Length = 0x00200},
+            new BlockInfo3DS {Offset = 0x4DE00, Length = 0x00098},
+            new BlockInfo3DS {Offset = 0x4E000, Length = 0x00068},
+            new BlockInfo3DS {Offset = 0x4E200, Length = 0x69780},
+            new BlockInfo3DS {Offset = 0xB7A00, Length = 0x000B0},
+            new BlockInfo3DS {Offset = 0xB7C00, Length = 0x00940},
         };
 
         private bool CanReadChecksums()
@@ -257,5 +257,8 @@ public override GameVersion Version
 
         protected override bool[] MysteryGiftReceivedFlags { get => GiftRecords.Flags; set => GiftRecords.Flags = value; }
         protected override MysteryGift[] MysteryGiftCards { get => GiftRecords.Records; set => GiftRecords.Records = (WR7[])value; }
+
+        public override int GameSyncIDSize => MyStatus7b.GameSyncIDSize; // 64 bits
+        public override string GameSyncID { get => Status.GameSyncID; set => Status.GameSyncID = value; }
     }
 }
diff --git a/PKHeX.Core/Saves/Substructures/Gen7/MyStatus7b.cs b/PKHeX.Core/Saves/Substructures/Gen7/MyStatus7b.cs
index f1a44a662..88b33ac26 100644
--- a/PKHeX.Core/Saves/Substructures/Gen7/MyStatus7b.cs
+++ b/PKHeX.Core/Saves/Substructures/Gen7/MyStatus7b.cs
@@ -1,4 +1,5 @@
 using System;
+using System.Linq;
 
 namespace PKHeX.Core
 {
@@ -40,6 +41,30 @@ public int Gender
             set => Data[Offset + 5] = OverworldGender = (byte)value;
         }
 
+        public const int GameSyncIDSize = 16; // 8 bytes
+
+        public string GameSyncID
+        {
+            get
+            {
+                var data = Data.Skip(Offset + 0x10).Take(GameSyncIDSize / 2).Reverse().ToArray();
+                return BitConverter.ToString(data).Replace("-", string.Empty);
+            }
+            set
+            {
+                if (value == null)
+                    return;
+                if (value.Length > 16)
+                    return;
+
+                Enumerable.Range(0, value.Length)
+                    .Where(x => x % 2 == 0)
+                    .Reverse()
+                    .Select(x => Convert.ToByte(value.Substring(x, 2), 16))
+                    .ToArray().CopyTo(Data, Offset + 0x10);
+            }
+        }
+
         public int Language
         {
             get => Data[Offset + 0x35];