package stacks

import (
	"fmt"
	"io"
	"log"
	"testing"
	"time"
)

// R-1347, the consequence: an app whose last update ended held is not watched for a crash loop; once its hold is lifted by
// a restore and the flag forgotten (backup.clearUpdateHoldAfterRestore → ForgetUpdateHeld) the same restarts trip the
// watcher again.
func TestR1347_TheWatcherWatchesAgainOnceTheFlagIsForgotten(t *testing.T) {
	m := &Manager{logger: log.New(io.Discard, "", 0), stacks: map[string]*Stack{
		"nextcloud": {Name: "nextcloud", Deployed: true, Containers: []ContainerInfo{{Name: "nextcloud-web-1"}}},
	}}
	m.markUpdateHeld("nextcloud")
	count := int64(0)
	m.execFn = func(string, ...string) (string, error) { return fmt.Sprintf("/nextcloud-web-1|%d\n", count), nil }
	t0 := time.Date(2026, 11, 2, 4, 20, 0, 0, time.UTC)
	sample := func(from int) []UnhealthyVerdict {
		var got []UnhealthyVerdict
		for i := from; i < from+12 && len(got) == 0; i++ {
			count += 3
			got = m.ObserveUnhealthy(t0.Add(time.Duration(i)*time.Minute), nil)
		}
		return got
	}
	if got := sample(0); len(got) != 0 {
		t.Fatalf("control: an app whose update ended held must not be judged: %+v", got)
	}
	if !m.ForgetUpdateHeld("nextcloud") {
		t.Fatal("the flag was set, so it must be forgotten")
	}
	got := sample(20)
	if len(got) != 1 || got[0].Stack != "nextcloud" || got[0].Kind != UnhealthyCrashLoop {
		t.Fatalf("after the restore lifted the hold the watcher must watch the app again; verdicts %+v", got)
	}
}