-- P19: запускает target-пробу overwrite и фиксирует итоговую таблицу.
-- Запас на I/O MAME 0.287: ранний выход обрывал пробу до ALL PASS.

local KB = ":kbd:ms_naturl:"
local HOLD = 0.06
local events = {}

local function add(t, tag, mask, value)
  events[#events + 1] = {t, KB .. tag, mask, value}
end

local function key(t, tag, mask)
  add(t, tag, mask, 1)
  add(t + HOLD, tag, mask, 0)
end

local function chord(t, mod_tag, mod_mask, key_tag, key_mask)
  add(t, mod_tag, mod_mask, 1)
  add(t + 0.02, key_tag, key_mask, 1)
  add(t + 0.08, key_tag, key_mask, 0)
  add(t + 0.10, mod_tag, mod_mask, 0)
end

local chars = {
  d={"P1.4",0x04}, e={"P1.4",0x20}, l={"P2.2",0x08},
  r={"P1.5",0x01}, t={"P1.5",0x20}, x={"P1.2",0x10},
  ["."]={"P2.2",0x10},
  ["\n"]={"P2.1",0x10}, [":"]={"P2.3",0x02,true}
}

local function type_text(t, value)
  for i = 1, #value do
    local ch = value:sub(i, i)
    local def = chars[ch] or chars[ch:lower()]
    local shifted = def[3] or ch ~= ch:lower()
    if shifted then chord(t, "P1.7", 0x02, def[1], def[2])
    else key(t, def[1], def[2]) end
    t = t + 0.14
  end
end

type_text(8.0, "d:\n")
type_text(10.0, "DELRT.EXE\n")
key(90.0, "P2.1", 0x10)

table.sort(events, function(a, b) return a[1] < b[1] end)
local snap_times = {80.0, 95.0}
local snaps_done = {}
local start_time = nil
local ports = nil
local index = 1
local field_cache = {}

local function now()
  local value = manager.machine.time
  return value.seconds + value.attoseconds / 1e18
end

local function field(tag, mask)
  local cache_key = tag .. "/" .. mask
  if field_cache[cache_key] then return field_cache[cache_key] end
  for _, candidate in pairs(ports[tag].fields) do
    if candidate.mask == mask then
      field_cache[cache_key] = candidate
      return candidate
    end
  end
  error("Не найдено поле " .. cache_key)
end

emu.add_machine_reset_notifier(function() start_time = now() end)
emu.register_periodic(function()
  if not start_time then return end
  if not ports then ports = manager.machine.ioport.ports end
  local elapsed = now() - start_time
  while index <= #events and elapsed >= events[index][1] do
    local event = events[index]
    field(event[2], event[3]):set_value(event[4])
    index = index + 1
  end
  for _, snap_time in ipairs(snap_times) do
    if not snaps_done[snap_time] and elapsed >= snap_time then
      snaps_done[snap_time] = true
      manager.machine.video:snapshot()
    end
  end
  if elapsed >= 100.0 then manager.machine:exit() end
end)