package main

import (
	"os"
	"path/filepath"
	"time"
)

func init() {
	register(Check{
		Seq:   300,
		ID:    "30",
		Title: "Render benchmark: home-page p50 within baseline (WO-RP-013)",
		Run: func(ctx *ScanContext, rep *Reporter) {
			benchDir := filepath.Join(ctx.repoRoot, "e2e", "render-bench")
			baselinePath := filepath.Join(benchDir, "baseline.json")
			if _, err := os.Stat(baselinePath); err != nil {
				rep.Skip("no e2e/render-bench/baseline.json in this repo — render-perf gate not applicable")
				return
			}
			latestPath := filepath.Join(benchDir, "results", "latest.json")
			if _, err := os.Stat(latestPath); err != nil {
				rep.Skip("render bench not run (no results/latest.json) — run the `render-bench` suite from dojo to gate render performance")
				return
			}

			baseline, err := loadRenderBench(baselinePath)
			if err != nil {
				rep.Warn("render-perf baseline unreadable: %v", err)
				return
			}
			latest, err := loadRenderBench(latestPath)
			if err != nil {
				rep.Warn("render-perf latest.json unreadable: %v — re-run the render-bench suite from dojo", err)
				return
			}

			v := compareRenderPerf(baseline, latest, time.Now())
			switch {
			case v.skip:
				rep.Skip("%s", v.message)
			case v.fail:
				rep.Fail("%s", v.message)
			case v.warn:
				rep.Warn("%s", v.message)
			default:
				rep.OK("%s", v.message)
			}
		},
	})
}