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@@ -20,6 +20,7 @@ SlashCmdList.CARBON = function(input)
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     ChatFrame1:AddMessage("   |cffff9933del|r: Remove an item from the restock list")
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     ChatFrame1:AddMessage("   |cffff9933list|r: List current restock items")
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     ChatFrame1:AddMessage("   |cffff9933overstock|r: Ensure that the quantity specified is always purchased for items offered in stacks from vendor")
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+		ChatFrame1:AddMessage("   |cffff9933upgradewater|r: Automatically upgrade to better water as player levels")
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     ChatFrame1:AddMessage("   |cffff9933chatter|r: Give chat feedback when purchasing items")
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   end
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 end
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@@ -60,3 +61,7 @@ function StealYourCarbon:CMD_CHATTER()
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 end
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+function StealYourCarbon:CMD_UPGRADEWATER()
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+	self.db.upgradewater = not self.db.upgradewater
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+	self:Print("Auto-upgrading water", (self.db.upgradewater and "|cff00ff00enabled" or "|cffff0000disabled"))
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+end

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@@ -28,6 +28,28 @@ function StealYourCarbon:Print(...) ChatFrame1:AddMessage(string.join(" ", "|cFF
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 function StealYourCarbon:PrintF(fmsg, ...) ChatFrame1:AddMessage(string.format("|cFF33FF99Steal Your Carbon|r: "..fmsg, ...)) end
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+local waterupgrades = {27860,28399,8766,1645,1708,1205,1179,159}
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+function StealYourCarbon:UpgradeWater()
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+	local level = UnitLevel("player")
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+
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+	local buy, found, oldid = 0
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+	for _,id in pairs(waterupgrades) do
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+		if found then
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+			buy = buy + (self.db.stocklist[id] or 0)
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+			if self.db.stocklist[id] then oldid = id end
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+			self.db.stocklist[id] = nil
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+		elseif level >= select(5, GetItemInfo(id)) then
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+			found = id
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+		end
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+	end
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+
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+	if found and buy > 0 then
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+		if self.db.chatter then self:PrintF("Upgrading %s to %s", select(2, GetItemInfo(oldid)), select(2, GetItemInfo(found))) end
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+		self.db.stocklist[found] = buy
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+	end
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+end
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+
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+
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 ----------------------
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 --      Events      --
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 ----------------------
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@@ -51,6 +73,8 @@ end
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 function StealYourCarbon:MERCHANT_SHOW()
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+	if self.db.upgradewater then self:UpgradeWater() end
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+
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   for i=1,GetMerchantNumItems() do
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     local link = GetMerchantItemLink(i)
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     local itemID = link and ids[link]