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feat(admin): lapse sweep and the four renewal notices

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Hourly sweep marks expired Free instances lapsed and sends at most one
notice per instance per pass, most urgent first, recorded on the document
so a restart cannot re-send.

Deletion warnings are suppressed when the reaper is off. Promising a
deletion that will never happen is a lie, and a scarier one than silence.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
mrhid6
2026-07-26 13:20:00 +01:00
co-authored by Claude Opus 5
parent 909ddb884e
commit 372a8c5ddf
4 changed files with 228 additions and 0 deletions
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admin/internal/mail/mail.go
+35
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@@ -80,3 +80,38 @@ func SendRenewed(to, instanceName string, expires time.Time) error {
fmt.Sprintf("%s is renewed.\n\nYour Free licence now runs until %s.\n",
instanceName, expires.Format("2 January 2006")))
}
// SendExpiring is the renew-now nudge, seven days out.
func SendExpiring(to, instanceName, portalURL string, expires time.Time) error {
return send(to, instanceName+" expires on "+expires.Format("2 January"),
fmt.Sprintf("%s's Free licence runs out on %s.\n\n"+
"Renew it in one click:\n\n%s\n\n"+
"If you do nothing, the instance keeps running but stops accepting changes.\n",
instanceName, expires.Format("2 January 2006"), portalURL))
}
// SendExpired states plainly what has stopped and what happens next.
//
// It names the deletion date rather than a vague warning: the whole point of the
// sequence is that nobody loses an instance without having been told a date.
func SendExpired(to, instanceName, portalURL string, deleteOn time.Time) error {
return send(to, instanceName+" is now read-only",
fmt.Sprintf("%s's Free licence has expired.\n\n"+
"Your servers and monitors keep running and your agents keep their keys, "+
"but changes are disabled.\n\n"+
"Renew it here:\n\n%s\n\n"+
"If it is not renewed, the instance and everything in it will be deleted on %s.\n",
instanceName, portalURL, deleteOn.Format("2 January 2006")))
}
// SendDeletionWarning is the final countdown, sent at seven days and one day.
func SendDeletionWarning(to, instanceName, portalURL string, deleteOn time.Time, daysLeft int) error {
when := fmt.Sprintf("in %d days", daysLeft)
if daysLeft <= 1 {
when = "tomorrow"
}
return send(to, instanceName+" will be deleted "+when,
fmt.Sprintf("%s and everything in it will be deleted %s, on %s.\n\n"+
"This cannot be undone. Renew it here to keep it:\n\n%s\n",
instanceName, when, deleteOn.Format("2 January 2006"), portalURL))
}