using System;

namespace Server.Custom.Bridge
{
    /// <summary>
    ///     Tunables from Config/Bridge.cfg. Key scope is the filename, so `Port=7788` there
    ///     reads as "Bridge.Port" here.
    ///
    ///     Loaded in Configure(), which ScriptCompiler invokes before World.Load.
    /// </summary>
    public static class BridgeConfig
    {
        public static string Host { get; private set; }
        public static int Port { get; private set; }
        public static int QueueCap { get; private set; }

        public static int StatSweepSeconds { get; private set; }
        public static int DecaySweepSeconds { get; private set; }
        public static int EconomySweepSeconds { get; private set; }
        public static int PageSweepSeconds { get; private set; }

        public static string LinkUrl { get; private set; }

        public static int TownCrierMaxLines { get; private set; }
        public static int TownCrierMaxLineLength { get; private set; }
        public static int TownCrierMaxActive { get; private set; }
        public static int TownCrierMaxDurationSec { get; private set; }

        public static bool AdminWriteEnabled { get; private set; }
        public static AccessLevel AdminAccessFloor { get; private set; }
        public static int AdminBroadcastMaxLength { get; private set; }
        public static int AdminReasonMaxLength { get; private set; }
        public static int AdminBanMaxDurationSec { get; private set; }

        public static bool Enabled { get; private set; }

        public static void Configure()
        {
            Load();
        }

        /// <summary>Re-readable at runtime via `[bridge reload`.</summary>
        public static void Load()
        {
            Enabled = Config.Get("Bridge.Enabled", true);

            Host = Config.Get("Bridge.Host", "127.0.0.1");
            Port = Config.Get("Bridge.Port", 7788);
            QueueCap = Config.Get("Bridge.QueueCap", 10000);

            StatSweepSeconds = Config.Get("Bridge.StatSweepSeconds", 30);
            DecaySweepSeconds = Config.Get("Bridge.DecaySweepSeconds", 60);
            EconomySweepSeconds = Config.Get("Bridge.EconomySweepSeconds", 300);
            PageSweepSeconds = Config.Get("Bridge.PageSweepSeconds", 5);
            if (PageSweepSeconds < 1)
                PageSweepSeconds = 1;

            LinkUrl = Config.Get("Bridge.LinkUrl", "https://yoursite/link");

            TownCrierMaxLines = Config.Get("Bridge.TownCrierMaxLines", 6);
            TownCrierMaxLineLength = Config.Get("Bridge.TownCrierMaxLineLength", 200);
            TownCrierMaxActive = Config.Get("Bridge.TownCrierMaxActive", 20);
            TownCrierMaxDurationSec = Config.Get("Bridge.TownCrierMaxDurationSec", 86400);

            AdminWriteEnabled = Config.Get("Bridge.AdminWriteEnabled", false);
            AdminAccessFloor = ParseAccessLevel(Config.Get("Bridge.AdminAccessFloor", "CoOwner"), AccessLevel.CoOwner);
            AdminBroadcastMaxLength = Config.Get("Bridge.AdminBroadcastMaxLength", 300);
            AdminReasonMaxLength = Config.Get("Bridge.AdminReasonMaxLength", 400);
            AdminBanMaxDurationSec = Config.Get("Bridge.AdminBanMaxDurationSec", 31536000);

            if (QueueCap < 16)
                QueueCap = 16;
        }

        /// <summary>
        ///     Parses an AccessLevel name from config, case-insensitively, falling back to the given
        ///     default on anything unrecognized so a typo can never open the floor wider than intended.
        /// </summary>
        private static AccessLevel ParseAccessLevel(string value, AccessLevel fallback)
        {
            AccessLevel parsed;
            if (!String.IsNullOrEmpty(value) && Enum.TryParse(value.Trim(), true, out parsed) &&
                Enum.IsDefined(typeof(AccessLevel), parsed))
                return parsed;

            Console.WriteLine("[Bridge] unrecognized AdminAccessFloor '{0}', using {1}", value, fallback);
            return fallback;
        }

        public static string Describe()
        {
            return String.Format(
                "enabled={0} endpoint={1}:{2} queueCap={3} sweeps(stat={4}s decay={5}s econ={6}s) adminWrite={7}(floor={8})",
                Enabled, Host, Port, QueueCap, StatSweepSeconds, DecaySweepSeconds, EconomySweepSeconds,
                AdminWriteEnabled, AdminAccessFloor);
        }
    }
}