feat: cross acount, cross realm character tracking

Core/SharedData.lua

@@ -0,0 +1,83 @@
+-- Guda SharedData Module
+-- Cross-account character data sharing via GudaIO DLL (optional)
+-- The DLL merges all accounts' SavedVariables at startup into GudaShared.lua
+-- which is loaded via .toc and sets Guda_SharedCharacters global.
+-- No Lua hooking needed - pure file I/O at DLL load time.
+
+local addon = Guda
+
+local SharedData = {}
+addon.Modules.SharedData = SharedData
+
+-- Import shared characters from other accounts
+function SharedData:Initialize()
+    if not Guda_SharedCharacters or type(Guda_SharedCharacters) ~= "table" then
+        return
+    end
+
+    -- Determine current account by checking which characters are ours
+    -- (characters in Guda_DB.characters that don't have isShared flag)
+    local myChars = {}
+    if Guda_DB and Guda_DB.characters then
+        for fullName, data in pairs(Guda_DB.characters) do
+            if not data.isShared then
+                myChars[fullName] = true
+            end
+        end
+    end
+
+    -- Find which account name belongs to us by checking overlap
+    local myAccount = nil
+    local accountChars = {} -- account -> { fullName -> true }
+    for fullName, charData in pairs(Guda_SharedCharacters) do
+        local acct = charData.account
+        if acct then
+            if not accountChars[acct] then accountChars[acct] = {} end
+            accountChars[acct][fullName] = true
+        end
+    end
+
+    for acct, chars in pairs(accountChars) do
+        for fullName in pairs(chars) do
+            if myChars[fullName] then
+                myAccount = acct
+                break
+            end
+        end
+        if myAccount then break end
+    end
+
+    -- Import characters from other accounts
+    local importCount = 0
+    for fullName, charData in pairs(Guda_SharedCharacters) do
+        if charData.account and charData.account ~= myAccount then
+            -- Don't overwrite our own characters
+            if not myChars[fullName] then
+                Guda_DB.characters[fullName] = {
+                    name = charData.name,
+                    realm = charData.realm,
+                    faction = charData.faction,
+                    class = charData.class,
+                    classToken = charData.classToken,
+                    level = charData.level,
+                    money = charData.money,
+                    bags = charData.bags,
+                    bank = charData.bank,
+                    mailbox = charData.mailbox,
+                    equipped = charData.equipped,
+                    lastUpdate = charData.lastUpdate,
+                    account = charData.account,
+                    isShared = true,
+                }
+                importCount = importCount + 1
+            end
+        end
+    end
+
+    if importCount > 0 then
+        addon:Print("Imported " .. importCount .. " character(s) from other accounts")
+    end
+
+    -- Clean up the global to free memory
+    Guda_SharedCharacters = nil
+end