local listOfProducts = { 
    
      "product"
    } 
    
local validProducts, invalidProducts = {}, {}
 
function unpackValidProducts()
        print ("Loading product list")
        if not validProducts then
                native.showAlert( "In-App features not available", "initStore() failed","", { "OK" } )        
    else
        for i=1, #invalidProducts do
                native.showAlert( "Item " .. invalidProducts[i] .. " is invalid.","",{ "OK" } )
        end
    end
    if validProducts then
        for i = 1, validProducts do
                        native.showAlert( "Item " .. validProducts[i] .. " is valid.","",{ "OK" } )
        end
    end
end
 
--XB7EB78Y28.com.streetlightproductions.bounceaball.movingtwos1
function loadProductsCallback( event )
--local alert = native.showAlert( "Loading products", "Works", { "Great!"})
        validProducts = event.products
        invalidProducts = event.invalidProducts    
    unpackValidProducts ()
end
   
function savePurchase(product)
        --function on what should be save when user buy a product
end
 
function transactionCallback( event )
        if event.transaction.state == "purchased" then 
                savePurchase("product") --you should enter here the product being purchased
    elseif event.transcation.state == "restored" then  
        savePurchase("product") --you should enter here the product being purchased
    elseif event.transaction.state == "cancelled" then
    
    elseif event.transaction.state == "failed" then        
        infoString = "Transaction failed, type: ", event.transaction.errorType, event.transaction.errorString
        local alert = native.showAlert("Failed ", infoString,{ "OK" })
    else
        infoString = "Unknown event"
        local alert = native.showAlert("Unknown ", infoString,{ "OK" })
    end
    store.finishTransaction( event.transaction )
end
 
function setupMyStore (event)
    store.loadProducts( listOfProducts, loadProductsCallback )
end
 
 local onComplete = function(event) -- 1
 local i = event.index
        if "clicked" == event.action then --2
        if (1 == i) then -- 3
                --local buyThis = function ( product ) --4
                print ("functon buy")
                        if store.canMakePurchases then  --5
               store.purchase( {"com.streetlightproductions.movingtwoone"} ) 
               local alert = native.showAlert("congrats you bought it ", product,{ "OK" })
                           --levelpacks[1] = "yes"
                           --saveData()
                           --dchangeScene("movingtwo", "crossfade")
                  
               else  --5
                  native.showAlert("Store purchases are not available, please try again later",  { "OK" } ) 
               end  --5
            --end -- 4 
        end --3
            -- Enter your product id here
           --buyThis = ("product")  
    end --2
end -- 1
 
store.init(transactionCallback) 
setupMyStore()