-- /usr/lib/cgit/lua/debug_gpgfrontend.lua
local r = lighty.r
local a = r.req_attr

-- Get the "original" path to avoid being affected by rewrites
local raw = a["uri.path-raw"] or a["uri.path"] or "/"
local orig = a["request.orig-uri"] or raw

-- Match two entry points:
--   1) /GpgFrontend/...
--   2) /cgit.cgi/GpgFrontend/...   (when the user accessed cgit.cgi directly)
local new_path

if orig:match("^/GpgFrontend") then
  new_path = orig:gsub("^/GpgFrontend", "/gpgfrontend")
elseif orig:match("^/cgit%.cgi/GpgFrontend") then
  -- Convert /cgit.cgi/GpgFrontend/... to /gpgfrontend/... so rewrite adds /cgit.cgi only once
  new_path = orig:gsub("^/cgit%.cgi/GpgFrontend", "/gpgfrontend")
end

if new_path then
  local q = a["uri.query"]
  if q and #q > 0 and not new_path:find("%?") then
    new_path = new_path .. "?" .. q
  end
  r.resp_header["Location"] = new_path
  return 301
end

r.resp_header["X-Magnet-Probed"] = "1"
return 0