bp.lua

script.on_event(defines.events.on_player_setup_blueprint, function(event)
--    game.print("In BP setup")
    global.player = global.player or {}
    global.player[event.player_index] = global.player[event.player_index] or {}
    global.player[event.player_index].bp = {}
    for idx,entity in pairs(event.mapping.get()) do
        if entity.name == "train-publisher" then
            global.player[event.player_index].bp = global.player[event.player_index].bp or {}
            global.player[event.player_index].bp[idx] = entity
        --    game.print(entity.unit_number)
        end
    end
end)

script.on_event(defines.events.on_player_configured_blueprint, function(event)
--   game.print("In BP configured")
    local status,err = pcall(function()
    local player = game.players[event.player_index]
    local stack = player.cursor_stack
    if stack.valid == true then
    if stack.is_blueprint == true then
    --    game.print("BP held")
        for idx,bp_entity in pairs(global.player[event.player_index].bp) do
        --     game.print(idx .. " :  " .. bp_entity.unit_number)
            for i,entity in pairs(global.newpublishers[player.surface.name]) do
                for j,res_entity in pairs(entity) do
                    if res_entity.entity.unit_number == bp_entity.unit_number then
                    --    game.print("entity =  bp entity")
                        stack.set_blueprint_entity_tags(idx, {
                            resource = res_entity.priority.resource,
                            id = res_entity.priority.id,
                            hide = res_entity.hide,
                            proc_priority = res_entity.proc_priority
                        })
                        break
                    end
                end
            end
        end
    end
    end
    end)
    if not status then
		game.print("Blueprint changed - Requester's details not saved")
	end
end)