-- ### CONFIG ###
-- message to player "type", if delivery of item debugs client, it can be because of undefinied type (type that does not exist in your server LUA)
SHOP_MSG_TYPE = MESSAGE_EVENT_ADVANCE
-- ### END OF CONFIG ###

function onThink(interval)
	local resultId = db.storeQuery("SELECT * FROM z_ots_comunication")
	if resultId ~= false then
		repeat
			local transactionId = result.getDataInt(resultId, "id")
			local player = Player(result.getDataString(resultId, "name"))

			if player then
				local itemId = tonumber(result.getDataString(resultId, "param1"))
				local itemCount = tonumber(result.getDataString(resultId, "param2"))
				local containerId = tonumber(result.getDataString(resultId, "param3"))
				local containerItemsInsideCount = tonumber(result.getDataString(resultId, "param4"))
				local shopOfferType = result.getDataString(resultId, "param5")
				local shopOfferName = result.getDataString(resultId, "param6")

				local item = Game.createItem(itemid, count)
				if item then
					return item:getUniqueId()
				end


				-- DELIVER ITEM
				if shopOfferType == 'item' then
					local newItem = Game.createItem(itemId, itemCount)
					--  item does not exist, wrong id OR count
					if not newItem then
						player:sendTextMessage(SHOP_MSG_TYPE, 'Website Shop bugged. Contact with administrator! Error is visible in server console.')
						print('ERROR! Website Shop (' .. player:getName() .. ') - cannot create item - invalid item ID OR count - ITEM ID: ' .. itemId .. ', ITEM COUNT: ' .. itemCount)
						return true
					end

					-- get player store inbox as container, so we can add item to it
					local playerStoreInbox = player:getSlotItem(CONST_SLOT_STORE_INBOX)
					-- cannot open Store Inbox, report problem
					if not playerStoreInbox then
						player:sendTextMessage(SHOP_MSG_TYPE, 'Website Shop bugged. Contact with administrator! Error is visible in server console.')
						print('ERROR! Website Shop (' .. player:getName() .. ') - cannot open player "Store Inbox" - it is not supported in your server OR variable "CONST_SLOT_STORE_INBOX" is not definied in LUA')
						return true
					end
					-- add container with items to Store Inbox
					receivedItemStatus = playerStoreInbox:addItemEx(newItem)

					if type(receivedItemStatus) == "number" and receivedItemStatus == RETURNVALUE_NOERROR then
						player:sendTextMessage(SHOP_MSG_TYPE, 'You received ' .. shopOfferName .. ' from Website Shop. You can find your item in STORE INBOX (under EQ).')
						db.asyncQuery("DELETE FROM `z_ots_comunication` WHERE `id` = " .. transactionId)
						db.asyncQuery("UPDATE `z_shop_history_item` SET `trans_state`= 'realized', `trans_real`=" .. os.time() .. " WHERE `id` = " .. transactionId)
					else
						player:sendTextMessage(SHOP_MSG_TYPE, 'Website Shop bugged. Contact with administrator! Error is visible in server console.')
						print('ERROR! Website Shop (' .. player:getName() .. ') - cannot add item to STORE INBOX - unknown reason, is it\'s size limited and it is full? - ITEM ID: ' .. itemId .. ', ITEM COUNT: ' .. itemCount)
					end

					-- DELIVER CONTAINER
				elseif shopOfferType == 'container' then
					-- create empty container
					local newContainer = Game.createItem(containerId, 1)
					-- container item does not exist OR item is not Container
					if not newContainerUID or not Container(newContainer.uid) then
						player:sendTextMessage(SHOP_MSG_TYPE, 'Website Shop bugged. Contact with administrator! Error is visible in server console.')
						print('ERROR! Website Shop (' .. player:getName() .. ') - cannot create container - invalid container ID - CONTAINER ID:' .. containerId)
						return true
					end

					-- add items to container
					for i = 1, containerItemsInsideCount do
						-- create new item
						local newItem = Game.createItem(itemId, itemCount)
						--  item does not exist, wrong id OR count
						if not newItem then
							player:sendTextMessage(SHOP_MSG_TYPE, 'Website Shop bugged. Contact with administrator! Error is visible in server console.')
							print('ERROR! Website Shop (' .. player:getName() .. ') - cannot create item - invalid item ID OR count - ITEM ID: ' .. itemId .. ', ITEM COUNT: ' .. itemCount)
							return true
						end

						-- add item to container
						local addItemToContainerResult = newContainer:addItemEx(newItem)
						-- report error if it's not possible to add item to container
						if type(addItemToContainerResult) ~= "number" or addItemToContainerResult ~= RETURNVALUE_NOERROR then
							player:sendTextMessage(SHOP_MSG_TYPE, 'Website Shop bugged. Contact with administrator! Error is visible in server console.')
							print('ERROR! Website Shop (' .. player:getName() .. ') - cannot add item to container - item is not pickable OR variable "RETURNVALUE_NOERROR" is not definied in LUA - ITEM ID: ' .. itemId .. ', ITEM COUNT: ' .. itemCount)
							return true
						end
					end

					-- get player store inbox as container, so we can add item to it
					local playerStoreInbox = player:getSlotItem(CONST_SLOT_STORE_INBOX)
					-- cannot open Store Inbox, report problem
					if not playerStoreInbox then
						player:sendTextMessage(SHOP_MSG_TYPE, 'Website Shop bugged. Contact with administrator! Error is visible in server console.')
						print('ERROR! Website Shop (' .. player:getName() .. ') - cannot open player "Store Inbox" - it is not supported in your server OR variable "CONST_SLOT_STORE_INBOX" is not definied in LUA')
						return true
					end
					-- add container with items to Store Inbox
					receivedItemStatus = playerStoreInbox:addItemEx(newContainer)

					if type(receivedItemStatus) == "number" and receivedItemStatus == RETURNVALUE_NOERROR then
						player:sendTextMessage(SHOP_MSG_TYPE, 'You received ' .. shopOfferName .. ' from Website Shop. You can find your item in STORE INBOX (under EQ).')
						db.asyncQuery("DELETE FROM `z_ots_comunication` WHERE `id` = " .. transactionId)
						db.asyncQuery("UPDATE `z_shop_history_item` SET `trans_state`= 'realized', `trans_real`=" .. os.time() .. " WHERE `id` = " .. transactionId)
					else
						player:sendTextMessage(SHOP_MSG_TYPE, 'Website Shop bugged. Contact with administrator! Error is visible in server console.')
						print('ERROR! Website Shop (' .. player:getName() .. ') - cannot add container with items to STORE INBOX - unknown reason, is it\'s size limited and it is full? - ITEM ID: ' .. itemId .. ', ITEM COUNT: ' .. itemCount .. ', CONTAINER ID:' .. containerId .. ', ITEMS IN CONTAINER COUNT:' .. containerItemsInsideCount)
					end

					-- DELIVER YOUR CUSTOM THINGS
				elseif shopOfferType == 'mything' then -- addon, mount etc.
					-- HERE YOUR CODE
				end
			end
		until not result.next(resultId)
		result.free(resultId)
	end

	return true
end