-- 0.2/P6: четыре сортировки, reverse, независимость панелей и refresh.

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}, o={"P2.2",0x02}, p={"P2.3",0x20},
  r={"P1.5",0x01}, s={"P1.2",0x08}, t={"P1.5",0x20},
  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] 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

local function ctrl_f(t, tag, mask)
  chord(t, "P1.1", 0x02, tag, mask)
end

type_text(8.0, "d:\n")
type_text(9.0, "SORTRT.EXE\n")
type_text(12.0, "SPRCMD.EXE\n")

key(18.0, "P2.1", 0x10) -- left -> SORTL.
key(20.0, "P1.6", 0x20) -- Tab -> right.
key(21.0, "P2.3", 0x10) -- Down -> SORTR.
key(22.0, "P2.1", 0x10) -- right -> SORTR.
key(24.0, "P1.6", 0x20) -- left active again.

ctrl_f(27.0, "P2.6", 0x80) -- Ctrl+F4: extension ascending.
ctrl_f(31.0, "P2.6", 0x80) -- extension descending.
ctrl_f(35.0, "P2.1", 0x80) -- Ctrl+F6: size ascending.
ctrl_f(39.0, "P2.1", 0x80) -- size descending.
ctrl_f(43.0, "P2.1", 0x40) -- Ctrl+F5: date ascending.
ctrl_f(47.0, "P2.1", 0x40) -- date descending.
ctrl_f(51.0, "P2.6", 0x40) -- Ctrl+F3: name ascending.
ctrl_f(55.0, "P2.6", 0x40) -- name descending.

ctrl_f(59.0, "P2.1", 0x80) -- left size ascending.
ctrl_f(61.0, "P2.1", 0x80) -- left size descending.
key(63.0, "P1.6", 0x20)    -- right active, still N+.
ctrl_f(65.0, "P2.6", 0x80) -- right extension ascending.
chord(68.0, "P1.1", 0x02, "P1.5", 0x01) -- refresh keeps E+.

key(72.0, "P2.3", 0x80) -- F10.
key(74.0, "P2.1", 0x10) -- Enter: cleanup.

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

local snap_times = {
  25.5, -- обе панели N+;
  29.0, -- left E+;
  33.0, -- left E-;
  37.0, -- left S+;
  41.0, -- left S-;
  45.0, -- left D+;
  49.0, -- left D-;
  53.0, -- left N+;
  57.0, -- left N-;
  66.5, -- left S-, right E+;
  70.0, -- refresh сохранил right E+;
  76.0  -- чистый DSS prompt.
}
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("[p6-sort] snapshot t=" .. elapsed)
    end
  end

  if elapsed >= 78.0 then
    print("[p6-sort] exit t=" .. elapsed)
    manager.machine:exit()
  end
end)