lang = lephisto.lang()
if lang == "es" then
  -- Not translated atm
else -- Default english
  misn_desc     = "The Empire needs to ship %d tons of %s to %s in the %s system by %s (%s left)."
  misn_reward   = "%d credits"
  title = {}
  title[1]      = "ES: Ship to %s"
  title[2]      = "ES: Delivery to %s"
  full_title    = "Ship is full"
  full_msg      = "Your ship is too full.  You need to make room for %d more tons if you want to be able to accept the mission."
  accept_title  = "Mission Accepted"
  accept_msg    = "The Empire workers load the %d tons of %s onto your ship."
  toomany_title = "Too many missions"
  toomany_msg   = "You have too many active missions."
  finish_title  = "Succesful Delivery"
  finish_msg    = "The Empire workers unload the %s at the docks."
  miss_title    = "Cargo Missing"
  miss_msg      = "You are missing the %d tons of %s!."
  miss_timeup   = "MISSION FAILED: You have failed to deliver the goods to the Empire on time!"
end

--    Empire shipping missions are always timed, but quite lax on the schedules
--    pays a bit more then the rush missions

-- Create the mission
function create()
   -- Target destination
  local i = 0
  repeat
    planet = space.getPlanet( misn.factions() )
    i = i + 1
  until planet ~= space.landName() or i > 10
  -- Infinite loop protection
  if i > 10 then
    misn.finish(false)
  end
  system = space.getSystem( planet )
  misn_dist = space.jumpDist(system)

  -- Mission generics
  misn_type = "Cargo"
  i = rnd.int(1)
  misn.setTitle( string.format(title[i+1], planet) )

  -- More mission specifics
  carg_mass = rnd.int( 10, 30 )
  i = rnd.int(12)
  if i < 5 then
    carg_type = "Food"
  elseif i < 8 then
    carg_type = "Ore"
  elseif i < 10 then
    carg_type = "Industrial Goods"
  elseif i < 12 then
    carg_type = "Luxury Goods"
  else
    carg_type = "Medicine"
  end

  misn_time = time.get() + time.units(5) +
      rnd.int(time.units(5), time.units(8)) * misn_dist
  misn.setDesc( string.format( misn_desc, carg_mass, carg_type, planet, system,
      time.str(misn_time), time.str(misn_time-time.get())) )
  reward = misn_dist * carg_mass * (500+rnd.int(250)) +
      carg_mass * (250+rnd.int(150)) +
      rnd.int(2500)
  misn.setReward( string.format( misn_reward, reward ) )
end

-- Mission is accepted
function accept()
  if player.freeCargo() < carg_mass then
    tk.msg( full_title, string.format( full_msg, carg_mass-player.freeCargo() ))
  elseif misn.accept() then -- Able to accept the mission, hooks BREAK after accepting
    carg_id = player.addCargo( carg_type, carg_mass )
    tk.msg( accept_title, string.format( accept_msg, carg_mass, carg_type ))
    hook.land( "land" ) -- Only hook after accepting
    hook.time( "timeup" )
  else
    tk.msg( toomany_title, toomany_msg )
  end
end

-- Land hook
function land()
  if space.landName() == planet then
    if player.rmCargo( carg_id ) then
      player.pay( reward )
      tk.msg( finish_title, string.format( finish_msg, carg_type ))

      -- Increase empire shipping mission counter
      n = var.peek("es_misn")
      if n ~= nil then
        var.push("es_misn", n+1)
      else
        var.push("es_misn", 1)
      end

      misn.finish(true)
    else
      tk.msg( miss_title, string.format( miss_msg, carg_mass, carg_type ))
    end
  end
end

-- Time hook
function timeup()
  if time.get() > misn_time then
    player.msg( miss_timeup )
    misn.finish(false)
  end
  misn.setDesc( string.format( misn_desc, carg_mass, carg_type, planet, system,
      time.str(misn_time), time.str(misn_time-time.get())) )
end