--[[
	verify_source.luau -- read the module SOURCE TEXT in Edit, bypassing require().

	Why: require() caches a ModuleScript's return value for the whole Studio
	session. Both modules were pushed successfully (match=true), but an earlier
	require() in this same session means require() still hands back the OLD
	table -- so a harness that builds cars via require() measures stale code and
	can report a false PASS. Reading .Source is cache-proof.

	This only proves the SOURCE is correct on disk-in-Studio. It cannot prove
	runtime behaviour -- that needs a fresh datamodel (press Play), which
	rebuilds the require cache from this source.
]]

local SSS = game:GetService("ServerScriptService")
local RS = game:GetService("ReplicatedStorage")

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 function find(name: string): ModuleScript?
	for _, root in ipairs({ SSS, RS }) do
		local hit = root:FindFirstChild(name, true)
		if hit and hit:IsA("ModuleScript") then
			return hit
		end
	end
	return nil
end

local checks = {
	{
		module = "CarManager",
		label = "isFront convention",
		want = "local isFront = zSign > 0",
		bad = "local isFront = zSign < 0",
	},
	{
		module = "CarManager",
		label = "shell nose solver",
		want = "shellYaw = -math.atan2(-nose.X, nose.Z)",
		bad = "shellYaw = -math.atan2(nose.X, -nose.Z)",
	},
	{
		module = "CarManager",
		label = "SHELL_YAW_OVERRIDE removed",
		want = nil,
		bad = "local SHELL_YAW_OVERRIDE",
	},
	{
		module = "Chassis",
		label = "DRIVE_SIGN",
		want = "Chassis.DRIVE_SIGN = 1",
		bad = "Chassis.DRIVE_SIGN = -1",
	},
}

local allGood = true
for _, c in ipairs(checks) do
	local m = find(c.module)
	if not m then
		log(string.format("%-28s MODULE NOT FOUND (%s)", c.label, c.module))
		allGood = false
		continue
	end
	local src = m.Source
	local hasWant = (c.want == nil) or (string.find(src, c.want, 1, true) ~= nil)
	local hasBad = (c.bad ~= nil) and (string.find(src, c.bad, 1, true) ~= nil)
	local ok = hasWant and not hasBad
	if not ok then
		allGood = false
	end
	log(string.format("%-28s %-6s  [%s: %d bytes]", c.label, ok and "OK" or "STALE", m:GetFullName(), #src))
end

log("")
log(
	allGood and ">>> SOURCE IS CORRECT in Edit. require() is still caching the old"
		or ">>> SOURCE IS STALE -- the push did not land."
)
if allGood then
	log("    copies this session, so only a FRESH Play session can prove runtime")
	log("    behaviour. Save (Ctrl+S), then press Play.")
end

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