amagalma_List parameters ID numbers and names for focused FX.lua

-- @description List parameters ID numbers and names for focused FX
-- @author amagalma
-- @version 1.00
-- @donation https://www.paypal.me/amagalma
-- @about
--   # List parameters ID numbers and names for focused FX
--
--   Lists in the Console all the parameter names and their IDs for the focused FX. Useful for script development.


local retval, tracknumber, itemnumber, fxnumber = reaper.GetFocusedFX()
if retval == 0 then
  reaper.MB("No FX has focus...", "Nothing to list, sorry!", 0)
end
local track = reaper.CSurf_TrackFromID( tracknumber, false )
reaper.ClearConsole()
if retval == 1 then
  local parm_cnt = reaper.TrackFX_GetNumParams( track, fxnumber )
  local _, name = reaper.TrackFX_GetFXName( track, fxnumber, "" )
  reaper.ShowConsoleMsg("\n" .. name .. " parameter id numbers\n\n")
  for i = 0, parm_cnt-1 do
    local retval, buf = reaper.TrackFX_GetParamName( track, fxnumber, i, "" )
    reaper.ShowConsoleMsg(i .. ": " .. buf .. "\n")
  end
elseif retval == 2 then
  local fxid = fxnumber >> 16 -- (FX Number)
  local takeid = fxnumber & 0xFFFF -- (Take Index)
  local item = reaper.GetMediaItem( 0, itemnumber )
  local take = reaper.GetMediaItemTake( item, takeid )
  local parm_cnt = reaper.TakeFX_GetNumParams( take, fxid )
  local _, name = reaper.TakeFX_GetFXName( take, fxid, "" )
  reaper.ShowConsoleMsg("\n" .. name .. " parameter id numbers\n\n")
  for i = 0, parm_cnt-1 do
    local retval, buf = reaper.TakeFX_GetParamName( take, fxid, i, "" )
    reaper.ShowConsoleMsg(i .. ": " .. buf .. "\n")
  end
end
reaper.defer(function() end)