namespace Aeshnidae.Healing;

/// <summary>/healing for staff and the console: the settings, the counts, and every online player's vitals and factors.</summary>
public static class Commands
{
    [CommandHandler("healing", AccessLevel.Admin, CommandHandlerFlag.None, 0,
        "Heals that scale with the vital healed: status, and every online player's maximum vitals and factor. Console-safe.",
        "/healing           settings, counts, and each online player's max health/stamina/mana and heal factor\n" +
        "/healing reload    re-read Settings.json\n" +
        "/healing selftest [wcid]   staging: heal spells on an off-world creature, retail vs x3, and harm untouched")]
    public static void HandleHealing(Session session, params string[] parameters)
    {
        if (parameters.Length > 0 && parameters[0].Equals("selftest", StringComparison.OrdinalIgnoreCase))
        {
            var wcid = parameters.Length > 1 && uint.TryParse(parameters[1], out var w) ? w : 11989u;   // Drudge Vagabond
            Reply(session, SelfTest.Run(wcid));
            return;
        }

        if (parameters.Length > 0 && parameters[0].Equals("reload", StringComparison.OrdinalIgnoreCase))
        {
            Mod.ReloadSettings();
            Reply(session, "settings re-read");
        }

        var s = Mod.Settings;
        var sb = new StringBuilder();
        sb.AppendLine($"Healing {(s.Enabled ? "ON" : "off")}: references health {s.ReferenceHealth:N0}, stamina {s.ReferenceStamina:N0}, mana {s.ReferenceMana:N0}" +
                      $"{(s.MaxFactor > 0 ? $", factor at most {s.MaxFactor}" : "")}; kits {(s.ScaleKits ? "on" : "off")}, spells {(s.ScaleSpells ? "on" : "off")}, " +
                      $"mana {(s.ScaleMana ? "on" : "off")}, monster heals {(s.ScaleMonsterHeals ? "on" : "off")}");
        sb.AppendLine($"  since load: {Scaling.KitsScaled} kit heal(s) and {Scaling.SpellsScaled} spell heal(s) scaled above retail");

        var players = PlayerManager.GetAllOnline().OrderByDescending(p => p.Level ?? 0).ToList();
        foreach (var p in players)
        {
            sb.AppendLine($"  {p.Name} (level {p.Level}): health {p.Health.MaxValue} (x{Scaling.Factor(p, PropertyAttribute2nd.MaxHealth):0.##}), " +
                          $"stamina {p.Stamina.MaxValue} (x{Scaling.Factor(p, PropertyAttribute2nd.MaxStamina):0.##}), mana {p.Mana.MaxValue}");
        }

        if (players.Count == 0)
            sb.AppendLine("  nobody online to measure");

        Reply(session, sb.ToString());
    }

    private static void Reply(Session? session, string message)
    {
        foreach (var line in (message ?? "").Split('\n'))
        {
            var text = line.TrimEnd('\r');

            if (string.IsNullOrWhiteSpace(text))
                continue;

            if (session?.Player is null)
                ModManager.Log(text);
            else
                session.Player.SendMessage(text);
        }
    }
}