Bug: date-time miscalculation in "HHhMMmSSs ago"

[Marcool04]

TLDR: The interval provided as x in the "HHhMMmSSs ago" field can be miscalculated

1. Is this urgent: No
2. DNS provider(s) you use: OVH
3. Program version: 2.9.0 (from AUR package https://aur.archlinux.org/packages/ddns-updater )
4. What are you using to run the container: native compilation and execution
5. Extra information:

On the following screenshot, notice how both the "no IP change for x" differ (and point to the correct time, see updates.json below), but "HHhMMmSSs ago" intervals are identical when they shouldn't be:

updates.json:

{
  "records": [
    {
      "domain": "[hidden]",
      "owner": "@",
      "ips": [
        {
          "ip": "[hidden]",
          "time": "2025-04-21T18:10:44.391977471+02:00"
        },
        {
          "ip": "[hidden]",
          "time": "2025-06-15T12:45:21.789458327+02:00"
        }
      ]
    }
  ]
}

config.json:

{
  "settings": [
    {
      "provider": "ovh",
      "domain": "[hidden]",
      "username": "[hidden]",
      "password": "[hidden]",
      "ip_version": "ipv4",
      "ipv6_suffix": ""
    },
    {
      "provider": "ovh",
      "domain": "[hidden]",
      "mode": "api",
      "api_endpoint": "ovh-eu",
      "app_key": "[hidden]",
      "app_secret": "[hidden]",
      "consumer_key": "[hidden]",
      "ip_version": "ipv6",
      "ipv6_suffix": ""
    }
  ]
}

Host OS: Arch linux (up to date rolling release OS).

The problem is likely in this function:

ddns-updater/internal/persistence/json/database.go

Line 114 in 20ac110

func checkHistoryEvents(events []models.HistoryEvent) (err error) {

but I can't really see how this might happen to be honest...

Thanks for the very useful little tool anyhow 👍️

Cheers,

Mark.