[SDPhantom]

I wrote a wrapper API to craft an item by the spell ID found in the recipe link. What it does is open the tradeskill briefly, block the actual tradeskill frame from showing, clear all filters, scan for the specific recipe by spell ID, then crafts any number of times. If the tradeskill doesn't exist or it's only to craft once, it automatically closes the tradeskill. If it's to craft multiple times, it'll wait until UPDATE_TRADESKILL_RECAST fires with GetTradeskillRepeatCount() returning 1. This happens even when crafting is interrupted.

Even though count is required to actually craft anything, it'll accept nil to just return whether the player had the recipe or not.

local DoTradeSkillByID; do
    function DoTradeSkillByID(trade,id,count)
--      Prevent the TradeSkill UI from loading
        UIParent:UnregisterEvent("TRADE_SKILL_SHOW");
        UIParent:UnregisterEvent("TRADE_SKILL_CLOSE");
 
--      Trigger TradeSkill open
        CastSpellByID(trade);
 
--      Clear all filters
        SetTradeSkillInvSlotFilter(-1,1,1);
        SetTradeSkillSubClassFilter(-1,1,1);
        SetTradeSkillItemNameFilter("");
        SetTradeSkillItemLevelFilter(0,0);
        TradeSkillOnlyShowMakeable(false);
        TradeSkillOnlyShowSkillUps(false);
 
--      Scan for recipe
        local found,run=false,false;
        for i=1,GetNumTradeSkills() do
            local link=GetTradeSkillRecipeLink(i);
            if link and tonumber(link:match("|Henchant:(%d+)|h"))==id then
                if count and not IsFlying() then
                    SelectTradeSkill(i);--  This should help read the correct amount of repeats through UPDATE_TRADESKILL_RECAST
                    DoTradeSkill(i,count);
                    run=true;
                end
                found=true;
                break;
            end
        end
 
--      Trigger TradeSkill close
        if not run or not count or count<=1 then CloseTradeSkill(); end
 
--      Restore events
        UIParent:RegisterEvent("TRADE_SKILL_SHOW");
        UIParent:RegisterEvent("TRADE_SKILL_CLOSE");
 
        return found;
    end
 
    local eventframe=CreateFrame()
    eventframe:RegisterEvent("UPDATE_TRADESKILL_RECAST");
    eventframe:SetScript(self,event
        if event=="UPDATE_TRADESKILL_RECAST" and GetTradeskillRepeatCount()<=1 and not (TradeSkillFrame and TradeSkillFrame:IsShown()) then
            CloseTradeSkill();
        end
    );
end