WoWInterface - Auction house : get specific item price

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Auction house : get specific item price

Hello everyone, i'm new developer and i would like to create an addon who show specific item price when i click on a button (item set in code and no with in game auction house research).

Currently i can create frame and button when i open auction house but i don't know how work auction house api (C_AuctionHouse.GetReplicateItemInfo or C_AuctionHouse.GetCommoditySearchResultInfo).

I try with Xrystal code : https://www.wowinterface.com/forums/...ad.php?t=57985 but nothing really gets done.

My currently code :

Code:

local UIConfig = CreateFrame("Frame", "OpertuneAH", UIParent, "BasicFrameTemplateWithInset");



UIConfig:RegisterEvent("AUCTION_HOUSE_SHOW") -- Event when auction house is opened

UIConfig:RegisterEvent("AUCTION_HOUSE_CLOSED") -- Event when auction house is closed



UIConfig:SetSize(600, 535) -- Window size

UIConfig:SetScript("OnEvent",

        function(self,event,...)

                if event == "AUCTION_HOUSE_SHOW" then -- If auction house is opened we create frame

                        -- Frame Settings

                        UIConfig:SetPoint("CENTER", UIParent, "CENTER", 200, 155) -- Position

                        UIConfig:SetMovable(true) -- Drag and drop option's

                        UIConfig:EnableMouse(true) -- Drag and drop option's

                        UIConfig:RegisterForDrag("LeftButton") -- Drag and drop option's

                        UIConfig:SetScript("OnDragStart", UIConfig.StartMoving) -- Drag and drop option's

                        UIConfig:SetScript("OnDragStop", UIConfig.StopMovingOrSizing) -- Drag and drop option's

                        -- Show Frame

                        UIConfig:Show()

                end

                if event == "AUCTION_HOUSE_CLOSED" then -- If auction house is closed we close the frame

                        UIConfig:Hide() -- Hide Frame

                        UIConfig.text:SetText("") -- Reset text area

                end 

        end)





-- Child frames and regions

-- Frame title

UIConfig.title = UIConfig:CreateFontString(nil, "OVERLAY")

UIConfig.title:SetFontObject("GameFontHighlight")

UIConfig.title:SetPoint("LEFT", UIConfig.TitleBg, "LEFT", 5, 0)

UIConfig.title:SetText("OpertuneAH")



-- Scan button

UIConfig.scanButton = CreateFrame("Button", nil, UIConfig, "GameMenuButtonTemplate")

UIConfig.scanButton:SetPoint("TOPLEFT", UIConfig, "TOPLEFT", 10, -28)

UIConfig.scanButton:SetSize(90, 25)

UIConfig.scanButton:SetText("Scan")

UIConfig.scanButton:SetNormalFontObject("GameFontNormalLarge") -- Text Color

UIConfig.scanButton:SetHighlightFontObject("GameFontHighlightLarge") -- Text Color



-- Event click button scan

UIConfig.scanButton:SetScript("OnClick",function(self,event,...)

        UIConfig.text:SetText("Hello World")

end)



-- Label text

UIConfig.text = UIConfig:CreateFontString(nil, "TEST")

UIConfig.text:SetFontObject("GameFontNormalLarge")

UIConfig.text:SetPoint("CENTER", UIConfig, "CENTER", 0, 0)

I don't know why my posts keep getting ignored.

Did you try to work with the example I posted in that thread and https://wow.gamepedia.com/API_C_Auct...ReplicateItems

Ohhhh my bad, i see your post but i missed

Quote:

ItemMixin:ContinueOnItemLoad()

and ItemMaxin api.
I try with that but i'm on the right way. Thank you for your answer.

Okay, i have an another problem, i can print information's from my specific item but when i want to print minimum buyout price (after gold conversion and after retrieve the minimum value in my table) my function return a random value.

Auction house price :
https://imgur.com/hoWL390

When i print all price and min price :
https://imgur.com/Sqb9AP8

On the screen he return the second price but with other item he return other price.
After many research i've tried differents ways but i have always the same result.

My functions :

Code:

local auctions = {}

local allPrice = {}

local initialQuery

local silverPrice, goldPrice, min



UIConfig.scanButton:SetScript("OnClick",function(self, button, down)

    if initialQuery then

        ScanAuctions()    

        initialQuery = false

    end

end)





function ScanAuctions()

    local continuables = {}



    for i = 0, C_AuctionHouse.GetNumReplicateItems() - 1 do

        auctions[i] = {C_AuctionHouse.GetReplicateItemInfo(i)}

        local item = Item:CreateFromItemID(auctions[i][17])

        continuables[item] = true



        item:ContinueOnItemLoad(function()

            auctions[i] = {C_AuctionHouse.GetReplicateItemInfo(i)}

            continuables[item] = nil

        end)

    end



    getLowestPrice()

end



function getLowestPrice()

    for i, _ in pairs(auctions) do

        if auctions[i][17] == 152510 then -- Anchor Weed id

            silverPrice = (auctions[i][10] / auctions[i][3]) -- copper price / count

            goldPrice = (silverPrice / 10000) 

            allPrice = {goldPrice}



            min = allPrice[1]

            for j = 1, #allPrice do

                print(allPrice[j]) -- print all price

                if allPrice[j] < min then

                    min = allPrice[j]

                end

            end

        end

    end



    print("Min Price : " .. min) -- print min price

end

Quote:

Originally Posted by Opertune (Post 337066)

but when i want to print minimum buyout price (after gold conversion and after retrieve the minimum value in my table) my function return a random value.

I'm guessing it's because you're not waiting for all auction items to get cached, and skip ahead to checking the auctions

Here's another example which prints the lowest price for an item ID right after it's done scanning or when you press the button or run a script

Lua Code:

local initialQuery
local auctions = {}
local f = CreateFrame("Frame", "SomeAddon")
 
-- you can also press the button or use this script when scanning is done
-- /run print(GetMoneyString(SomeAddon:GetLowestPrice(152510)))
local btn = CreateFrame("Button", nil, UIParent, "UIPanelButtonTemplate")
btn:SetPoint("CENTER")
btn:SetSize(120, 40)
btn:SetText("Example")
btn:SetScript("OnClick", function(self, button)
    if next(auctions) then
        f:SomeExample()
    else
        print("No data")
    end
end)
 
function f:SomeExample()
    local price = self:GetLowestPrice(152510)
    print("Min Price:", GetMoneyString(price))
end
 
function f:GetLowestPrice(itemID)
    local minPrice = math.huge
    for _, v in pairs(auctions) do
        if v[17] == itemID then
            local unitPrice = v[10] / v[3] -- totalPrice / count
            --print(unitPrice)
            minPrice = min(minPrice, unitPrice)
        end
    end
    if minPrice < math.huge then
        return minPrice
    end
end
 
function f:ScanAuctions(callback)
    local continuables = {}
    wipe(auctions)
    for i = 0, C_AuctionHouse.GetNumReplicateItems()-1 do
        auctions[i] = {C_AuctionHouse.GetReplicateItemInfo(i)}
        local item = Item:CreateFromItemID(auctions[i][17]) -- itemID
        continuables[item] = true
 
        item:ContinueOnItemLoad(function()
            auctions[i] = {C_AuctionHouse.GetReplicateItemInfo(i)}
            continuables[item] = nil
            if not next(continuables) then
                print("I'm done scanning")
                callback()
            end
        end)
    end
end
 
function f:OnEvent(event)
    if event == "AUCTION_HOUSE_SHOW" then
        C_AuctionHouse.ReplicateItems()
        initialQuery = true
    elseif event == "REPLICATE_ITEM_LIST_UPDATE" then
        if initialQuery then
            self:ScanAuctions(function() self:SomeExample() end)
            initialQuery = false
        end
    end
end
 
f:RegisterEvent("AUCTION_HOUSE_SHOW")
f:RegisterEvent("REPLICATE_ITEM_LIST_UPDATE")
f:SetScript("OnEvent", f.OnEvent)

Thanks for your help Ketho, i reused a part of your code and now my addon works great. I think i need more practice with lua and wow api but it's pretty cool to create a wow addon.

awesome code!

Is there any other way besides using C_AuctionHouse.ReplicateItems? The 15 min throttle seems too long for me as prices change quite quickly and the cached value becomes out of date pretty fast.

Or did you manage to use some other API?

Quote:

Originally Posted by deres (Post 337975)

Is there any other way besides using C_AuctionHouse.ReplicateItems?

I added an example to C_AuctionHouse.SendSearchQuery()

Awesome, this one looks even better as I'd only need to query max 20 items. Thanks for this one!

The REPLICATE_ITEM_LIST_UPDATE event however acts weirdly for me. sometimes the 15 min throttle is accurate, sometime it just doesn't happen. I even waited several hours (tried reopening the AH) but nothing happened.

Shouldn't it trigger automatically after this 15 min throttle expires?

Thanks!

Quote:

Originally Posted by deres (Post 337990)

Shouldn't it trigger automatically after this 15 min throttle expires?

You mean that the event should fire automatically after the 15 minutes cooldown expires?
No, it only fires once you call C_AuctionHouse.ReplicateItems() and while it's not throttled

The C_AuctionHouse.ReplicateItems() is called on the AUCTION_HOUSE_SHOW event like in your code. It worked 2 times in a row, now it seems to be bricked. Interesting. Tried attaching it to a button click, 35 minutes passed but nothing.

I might be throttled for more than 15 min I guess. Anyways the C_AuctionHouse.SendSearchQuery() works perfectly and suits my needs as I don't really need to scan the whole AH!