package metrics

import (
	"io"
	"log"
	"path/filepath"
	"testing"
	"time"
)

// The upload watch's baseline: per-minute sums across the app's containers, p95, only the named containers.
// RED-PROOF: take the p95 per container instead of the per-minute SUM → 2 + 1 = 3 reads as 2 → fails.
func TestStackTxP95Mbps_SumsContainersPerMinute(t *testing.T) {
	st, err := NewMetricsStore(filepath.Join(t.TempDir(), "m.db"), log.New(io.Discard, "", 0))
	if err != nil {
		t.Fatal(err)
	}
	defer st.Close()
	t0 := time.Date(2026, 10, 1, 0, 0, 0, 0, time.UTC).Unix()
	var a, b, other int64
	for i := int64(0); i < 200; i++ {
		ts := t0 + i*60
		st.InsertContainerMetrics([]ContainerSample{
			{Timestamp: ts, ContainerName: "nextcloud", NetTxBytes: a},
			{Timestamp: ts, ContainerName: "nextcloud-db", NetTxBytes: b},
			{Timestamp: ts, ContainerName: "qbittorrent", NetTxBytes: other},
		})
		a += 2e6 / 8 * 60 // 2 Mbit/s
		b += 1e6 / 8 * 60 // 1 Mbit/s
		other += 500e6 / 8 * 60
	}
	p95, minutes, err := st.StackTxP95Mbps([]string{"nextcloud", "nextcloud-db"}, time.Unix(t0, 0))
	if err != nil || minutes != 199 || p95 < 2.99 || p95 > 3.01 {
		t.Fatalf("p95 = %v over %d minutes, err %v — want 3 Mbit/s over 199", p95, minutes, err)
	}
}