--[[
	check_live_source.luau -- did the pushed CarManager source actually land,
	and is the running session using it?

	diag_steering still reports "found 4 motors" after a push that reported
	assembled==expected match=true. Two candidate explanations:
	  1. the source in the DataModel is stale (push landed elsewhere), or
	  2. the source is fresh but require() returned a CACHED module instance
	     from earlier in this Play session, so the old build function is live.
]]

local ServerScriptService = game:GetService("ServerScriptService")

local out = {}
local function log(...)
	local parts = {}
	for i = 1, select("#", ...) do
		parts[#parts + 1] = tostring((select(i, ...)))
	end
	table.insert(out, table.concat(parts, " "))
end

local server = ServerScriptService:FindFirstChild("Server", true)
local mod = server and server:FindFirstChild("CarManager")
log("module:", mod and mod:GetFullName() or "<not found>")

if mod then
	local src = mod.Source
	log("source bytes:", #src)
	log("has REAR-WHEEL DRIVE marker:", tostring(src:find("REAR%-WHEEL DRIVE") ~= nil))
	log("has 'if isFront then\\n\\t\\treturn' guard:", tostring(src:find("isFront then\n\t\treturn") ~= nil))
end

-- How many CarManager-like ModuleScripts exist anywhere? A duplicate copy
-- would explain a push landing in the wrong place.
local hits = {}
for _, d in ipairs(game:GetDescendants()) do
	if d:IsA("ModuleScript") and d.Name == "CarManager" then
		table.insert(hits, d:GetFullName() .. " (" .. #d.Source .. " bytes)")
	end
end
log("")
log("all CarManager ModuleScripts in this DataModel:")
for _, h in ipairs(hits) do
	log("   " .. h)
end

return table.concat(out, "\n")