using SQLInsight.Core.Findings;

namespace SQLInsight.Notifications;

internal static class Texts
{
    public static string Severity(Severity severity) => severity switch
    {
        Core.Findings.Severity.Critical => "Kritisk",
        Core.Findings.Severity.High => "Høj",
        Core.Findings.Severity.Medium => "Middel",
        Core.Findings.Severity.Low => "Lav",
        _ => "Info",
    };

    public static string Headline(Notification n) => n.Kind switch
    {
        NotificationKind.FindingOpened => $"[{Severity(n.Severity)}] {n.Instance}: {n.Title}",
        NotificationKind.FindingResolved => $"[Løst] {n.Instance}: {n.Title}",
        NotificationKind.InstanceUnreachable => $"[Kan ikke nås] {n.Instance}",
        NotificationKind.InstanceRecovered => $"[Svarer igen] {n.Instance}",
        _ => n.Title,
    };

    public static string Subject(IReadOnlyList<Notification> batch) => batch.Count == 1
        ? "SQLInsight: " + Headline(batch[0])
        : $"SQLInsight: {batch.Count} hændelser på {string.Join(", ", batch.Select(n => n.Instance).Distinct())}";

    public static string FirstSentence(string text)
    {
        var end = text.IndexOf(". ", StringComparison.Ordinal);
        return end < 0 ? text : text[..(end + 1)];
    }
}