-- Offline development entry point. Uses the same analyzer as the Studio adapter.
local fs = require("@lune/fs")
local luau = require("@lune/luau")
local process = require("@lune/process")
local serde = require("@lune/serde")

local capturePath, libraryPath = process.args[1], process.args[2]
assert(
	capturePath and libraryPath,
	"Usage: lune run scripts/analyze-profile.luau <capture.gprx> <LibMP.luau> [maxFrames]"
)
local maxFrames = tonumber(process.args[3] or "64")
assert(maxFrames and maxFrames % 1 == 0 and maxFrames >= 1 and maxFrames <= 256, "maxFrames must be 1–256")
local librarySource = fs.readFile(libraryPath)
assert(
	serde.hash("sha256", librarySource) == "ab9579e592e8751386a01537152f2b739cc7942ce565d3c11337cddaa250d231",
	"LibMP checksum differs from the reviewed release"
)
local library = luau.load(librarySource, {
	environment = {
		-- This path uses only OpenFromBuffer. Never expose LibMP's optional file or
		-- process providers; Lune reads the explicit input below instead.
		require = function(name)
			if name == "@std/fs" then
				return {}
			end
			if name == "@lute/process" then
				return { args = {} }
			end
			error("Unexpected LibMP dependency: " .. tostring(name))
		end,
	},
})()
assert(library.IsCliMode, "Expected an offline LibMP runtime")
local raw = fs.readFile(capturePath)
assert(#raw > 0 and #raw <= 32 * 1024 * 1024, "Capture must contain 1 byte to 32 MiB")
local analyzer = luau.load(fs.readFile(process.args[4] or "plugin/src/Profiler.lua"))()
local session
local ok, report = pcall(function()
	session = library.Session.OpenFromBuffer(buffer.fromstring(raw))
	assert(session and session:IsValid(), "LibMP rejected the capture; expected a compatible binary .gprx file")
	local result = analyzer.analyzeSession(session, maxFrames)
	result.source = "microprofiler-file"
	result.captureBytes = #raw
	result.libraryVersion = library.Versions.Library
	return result
end)
local cleaned, cleanupError = true, nil
if session then
	cleaned, cleanupError = pcall(function()
		session:Dispose()
	end)
end
assert(ok, report)
report.cleanupRequired = not cleaned
	or (report.scopes and report.scopes.cleanupRequired == true)
	or (report.counterTrends and report.counterTrends.cleanupRequired == true)
if not cleaned then
	report.cleanupError = tostring(cleanupError)
end
print(serde.encode("json", report))