-- P4.2 на HDD D: child меняет mode/palette/CWD и обе панели.

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 = {
  c={"P1.4",0x08}, d={"P1.4",0x04}, e={"P1.4",0x20},
  m={"P2.0",0x10}, p={"P2.3",0x20}, r={"P1.5",0x01},
  s={"P1.2",0x08}, x={"P1.2",0x10}, [" "]={"P2.4",0x80},
  ["."]={"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]
    local shifted = false
    if not def then
      local lower = ch:lower()
      def = chars[lower]
      shifted = ch ~= lower
    else
      shifted = def[3] or false
    end
    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(9.0, "SPRCMD  .EXE\n")

key(15.0, "P2.1", 0x10) -- левая -> EXECLEFT.
key(17.0, "P1.6", 0x20) -- Tab.
key(18.0, "P2.3", 0x10) -- EXECRGHT.
key(19.0, "P2.1", 0x10) -- правая -> EXECRGHT.
key(21.0, "P1.6", 0x20) -- Tab влево.

-- `..`, BROKEN.EXE, NOTE.TXT, P4CHILD.EXE.
for i = 1, 3 do key(22.0 + (i - 1) * 0.20, "P2.3", 0x10) end
key(23.5, "P2.1", 0x10) -- Enter: P4CHILD.EXE.
key(28.0, "P2.1", 0x10) -- Enter внутри child: return 5A.

-- После refresh: `..`, BROKEN, CREATED, NOTE, P4CHILD.
key(34.0, "P2.5", 0x01) -- Home.
key(35.0, "P2.3", 0x10) -- BROKEN.EXE.
key(36.0, "P2.1", 0x10) -- ошибка загрузчика EXE.

key(40.0, "P2.5", 0x01) -- Home.
for i = 1, 3 do key(41.0 + (i - 1) * 0.20, "P2.3", 0x10) end
key(42.5, "P2.1", 0x10) -- NOTE.TXT: тип не поддерживается.

key(47.0, "P2.3", 0x80) -- F10.
key(49.0, "P2.1", 0x10) -- cleanup.

table.sort(events, function(a, b) return a[1] < b[1] end)

local snap_times = {
  14.0, -- root D:;
  20.5, -- панели EXECLEFT/EXECRIGHT;
  26.0, -- экран дочерней программы 40x32;
  32.0, -- Commander восстановлен, обе панели refreshed;
  38.0, -- ошибка BROKEN.EXE без завершения Commander;
  45.0, -- NOTE.TXT не запускается;
  48.0, -- quit dialog поверх восстановленного экрана;
  51.0  -- чистый возврат в D:\>.
}
local snaps_done = {}
local start_time = nil
local ports = nil
local index = 1
local field_cache = {}

local function now()
  local t = manager.machine.time
  return t.seconds + t.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()
      print("[p4-exec-hdd] snapshot t=" .. elapsed)
    end
  end

  if elapsed >= 53.0 then
    print("[p4-exec-hdd] exit t=" .. elapsed)
    manager.machine:exit()
  end
end)