cfillion_Search and select nested tracks.lua

-- @version 0.2beta
-- @author cfillion

local RECURSIVE = false
local NESTED_RULES = {
  ['folder level 1'] = {
    ['folder level 2'] = {
      'track to select',
    },
  },
}

function deepSearch(rules, trackIndex, depth)
  while true do
    local track = reaper.GetTrack(nil, trackIndex)
    if not track then return trackIndex end

    local trackDepth = track and reaper.GetTrackDepth(track)
    if trackDepth < depth then return trackIndex end

    local trackDepthChange = reaper.GetMediaTrackInfo_Value(track, 'I_FOLDERDEPTH')
    local trackName = ({reaper.GetSetMediaTrackInfo_String(track, 'P_NAME', '', false)})[2]

    trackIndex = trackIndex + 1

    if trackDepth == depth then
      for ruleKey, ruleValue in pairs(rules) do
        if type(ruleKey) == 'string' and trackDepthChange == 1 and trackName:match(ruleKey) then
          trackIndex = deepSearch(ruleValue, trackIndex, trackDepth + 1)
        elseif type(ruleKey) == 'number' then
          if trackName:match(ruleValue) then
            reaper.SetTrackSelected(track, true)
          end
        end
      end
    elseif RECURSIVE then
      deepSearch(NESTED_RULES, trackIndex - 1, trackDepth)
    end
  end
end

reaper.PreventUIRefresh(1)
deepSearch(NESTED_RULES, 0, 0)
reaper.PreventUIRefresh(-1)