-- [[
--  Handle the randomly created cargo delivery missions.
-- ]]

lang = lephisto.lang()
if lang == "es" then
   -- Not translated atm.
else -- Default english.
  misn_desc       = {}
  misn_desc[1]    = "%s in the %s system needs a delivery of %d tons of %s."
  misn_desc[11]   = "%s in the %s system needs a rush delivery of %d tons of %s before %s (%s left)."
  misn_desc[21]   = "A group of %s needs to travel to %s in the %s system."
  misn_reward     = "%d credits"
  title           = {}
  title[1]        = "Cargo delivery to %s"
  title[2]        = "Freight delivery to %s"
  title[3]        = "Transport to %s"
  title[4]        = "Delivery to %s"
  title[11]       = "Rush Delivery to %s"
  title[21]       = "Transport %s to %s"
  title[22]       = "Ferry %s to %s"
  full            = {}
  full[1]         = "Ship is full"
  full[2]         = "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      = {}
  accept_msg[1]   = "The Workers load the %d tons of %s onto your ship."
  accept_msg[2]   = "The %s board your ship."
  msg_title       = {}
  msg_msg         = {}
  msg_title[1]    = "Too many missions"
  msg_msg[1]      = "You have too many active missions."
  msg_title[2]    = "Succesful Delivery"
  msg_msg[2]     = "The workers unload the %s at the docks."
  msg_title[3]    = "Cargo Missing"
  msg_msg[3]     = "You are missing the %d tons of %s!."
  msg_msg[4]      = "MISSION FAILED: You have failed to delivery the goods on time!"
end

-- Create the mission.
function create()
  local landed = space.getPlanet() -- Get landed planet.

   -- Target destination.
  local i = 0
  repeat
    planet, system = space.getPlanet(misn.factions())
    i = i + 1
  until planet ~= landed or i > 10
   -- Infinite loop protection.
  if i > 10 then
    misn.finish(false)
  end
  misn.setMarker(system) -- Mark the system.
  misn_dist = system:jumpDist()

  -- Mission generics.
  i = rnd.int(6)
  if i < 4 then -- Cargo delivery.
    misn_type = "Cargo"
    misn_faction = rnd.int(2)
    i = rnd.int(3)
    misn.setTitle(string.format(title[i+1], planet:name()))
  elseif i < 6 then-- Rush delivery.
    misn_type = "Rush"
    misn_faction = rnd.int(5)
    misn.setTitle(string.format(title[11], planet:name()))
  else -- People delivery :P
    misn_type = "People"
    misn.faction = rnd.int(1)
    carg_mass = 0
    i = rnd.int(5)
    if i < 2 then
      carg_type = "Colonists"
    elseif i < 4 then
      carg_type = "Tourists"
    else
      carg_type = "Pilgrims"
    end
    i = rnd.int(1)
    misn_setTitle(string.format(title[i+21], carg_type, planet:name()))
  end

  -- More mission specifics.
  if misn_type == "Cargo" or misn_type == "Rush" then
    carg_mass = rnd.int(10, 30)
    i = rnd.int(12) -- Set the goods.
    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
  end

  if misn_type == "Cargo" then
    misn.setDesc(string.format( misn_desc[1], planet:name(), system:name(), carg_mass, carg_type))
    reward = misn_dist * carg_mass * (250+rnd.int(150)) +
        carg_mass * (150+rnd.int(75)) +
        rnd.int(1500)
  elseif misn_type == "Rush" then
    misn_time = time.get() + time.units(2) +
        rnd.int(time.units(2), time.units(4)) * misn_dist
    misn.setDesc(string.format( misn_desc[11], planet:name(), system:name(),
        carg_mass, carg_type,
        time.str(misn_time), time.str(misn_time-time.get())))
    reward = misn_dist * carg_mass * (450+rnd.int(250)) +
        carg_mass * (250+rnd.int(125)) +
        rnd.int(2500)
  else -- People.
    misn.setDesc(string.format(misn_desc[21], carg_type, planet:name(), system:name()))
    reward = misn_dist * (1000 + rnd.int(500)) + rnd.int(2000)
  end
  misn.setReward(string.format(misn_reward, reward))
end

-- Mission is accepted.
function accept()
  if player.freeCargo() < carg_mass then
    tk.msg(full[1], string.format(full[2], carg_mass-player.freeCargo()))
    misn.finish()

  elseif misn.accept() then -- Able to accept the mission, hooks BREAK after accepting.
    carg_id = player.addCargo(carg_type, carg_mass)

    if misn_type == "People" then
      tk.msg(accept_title, string.format(accept_msg[2], carg_type))
    else
      tk.msg(accept_title, string.format(accept_msg[1], carg_mass, carg_type))
    end

    -- Set the hooks.
    hook.land("land") -- Only hook after accepting.
    if misn_type == "Rush" then -- Rush needs additional time hook.
       hook.time("timeup")
    end
  else
    tk.msg(msg_title[1], msg_msg[1])
    misn.finish()
  end
end

-- Land hook.
function land()
  local landed = space.getPlanet()
  if landed == planet then
    if player.rmCargo(carg_id) then
      player.pay( reward )
      tk.msg(msg_title[2], string.format(msg_msg[2], carg_type))

      -- Modify the faction standing.
      if player.getFaction("Merchant") < 70 then
        player.modFactionRaw("Merchant", misn_faction)
      end
      if player.getFaction("Independent") < 30 then
        player.modFactionRaw("Independent", misn_faction/2)
      end
      if player.getFaction("Empire") < 10 then
        player.modFaction("Empire", misn_faction/3)
      end

      misn.finish(true)
    else
      tk.msg(msg_title[3], string.format(msg_msg[3], carg_mass, carg_type))
    end
  end
end

-- Time hook.
function timeup()
  if time.get() > misn_time then
    player.msg(msg_msg[4])
    misn.finish(false)
  end
  misn.setDesc(string.format( misn_desc[21], planet:name(), system:name(),
      carg_mass, carg_type,
      time.str(misn_time), time.str(misn_time-time.get())))
end