local fsmanager = {}
fsmanager.filesystems = {}
local run = true

function fsmanager.mount(addr)
 for k,v in ipairs(fs.mounts()) do
  if fs.address(v) == addr then
   return
  end
 end
 dest = "/" .. (component.invoke(addr,"getLabel") or "mnt/"..addr:sub(1,3))
 syslog("Mounting "..addr.." to "..dest)
 fs.makeDirectory(dest)
 local w,r = fs.mount(dest,component.proxy(addr))
 if not w then 
  syslog("Failed to mount: "..r)
  return false
 end
 fsmanager.filesystems[addr] = dest
end

function fsmanager.start()
 run = true
 return os.spawn(function()
  for addr, _ in component.list("filesystem") do
   fsmanager.mount(addr)
  end
  while run do
   local tE = {coroutine.yield()}
   if tE[1] == "component_added" and tE[3] == "filesystem" then
    fsmanager.mount(tE[2])
   elseif tE[1] == "component_removed" and fsmanager.filesystems[tE[2]] and tE[3] == "filesystem" then
    syslog("Unmounting "..tE[2].." from "..fsmanager.filesystems[tE[2]])
    fs.umount(fsmanager.filesystems[tE[2]])
    fsmanager.filesystems[tE[2]] = nil
   end
  end
 end,"fsmanager")
end
function fsmanager.stop()
 run = false
end

return fsmanager