using System;
using InnovEnergy.App.SinexcelCommunication.DataTypes;
using InnovEnergy.App.SinexcelCommunication.SystemConfig;
using InnovEnergy.Lib.Devices.Sinexcel_12K_TL.DataType;

namespace InnovEnergy.App.SinexcelCommunication.ESS;
/*
public static class DynamicPricingEngine
    {
        
        public static readonly TimeSpan CheapStart = TimeSpan.FromHours(22); // 22:00
        public static readonly TimeSpan CheapEnd   = TimeSpan.FromHours(6);  // 06:00

        // Expensive (High tariff)
        public static readonly TimeSpan HighStart  = TimeSpan.FromHours(17); // 17:00
        public static readonly TimeSpan HighEnd    = TimeSpan.FromHours(21); // 21:00
        
        /// <summary>
        /// Call this from your main loop. It sets statusrecord.Mode.
        ///
        /// liveSpotPrice is only needed when DynamicPricingMode == SpotPrice.
        /// If your inverter cannot directly force Charge/Discharge, set inverterSupportsDirectForce=false
        /// and it will execute via TimeChargeDischarge + rolling short time window.
        /// </summary>
        public static void Apply(
            DateTime nowLocal,
            Decimal? liveSpotPrice,
            StatusRecord statusrecord,
            Boolean inverterSupportsDirectForce,
            Int32 rollingWindowMinutes = 10)
        {
            if (statusrecord == null) throw new ArgumentNullException(nameof(statusrecord));
            if (statusrecord.Config == null) throw new ArgumentNullException(nameof(statusrecord.Config));

            var c = statusrecord.Config;

            // 0) Manual override (optional)
            if (!c.DynamicPricingEnabled)
            {
                Console.WriteLine(" Dynamic pricing is disabled");
                return;
            }
            
            if (statusrecord.InverterRecord.OperatingPriority == OperatingPriority.ModeNotSynched)
            {
                Console.WriteLine(" Inverter mode are not synched ");
                return;
            }
/*
            
            }

            // 1) Base operating mode: explicit modes ignore dynamic pricing
            if (c.OperatingPriority == OperatingPriority.GridPriority)
            {
                SetMode(statusrecord, OperatingPriority.GridPriority);
                return;
            }

            if (c.OperatingPriority == OperatingPriority.BatteryPriority)
            {
                SetMode(statusrecord, OperatingPriority.BatteryPriority);
                return;
            }

            // 2) OperatingMode == OptimizeSelfUse -> dynamic pricing can apply
            var desired = DecideDesiredAction(nowLocal, liveSpotPrice, c);

            if (desired == DesiredAction.OptimizeSelfUse)
            {
                SetMode(statusrecord, OperatingPriority.LoadPriority);
                return;
            }

            // 3) Execute desired action
            if (inverterSupportsDirectForce)
            {
                statusrecord.Mode = desired == DesiredAction.Charge
                    ? BatteryMode.Charge
                    : BatteryMode.Discharge;
                return;
            }

            // 4) Inverter limitation: execute via TimeChargeDischarge rolling window
            statusrecord.Mode = BatteryMode.TimeChargeDischarge;

            var (start, end) = MakeRollingWindow(nowLocal, rollingWindowMinutes);

            if (desired == DesiredAction.Charge)
            {
                c.TimeChargeStart = start;
                c.TimeChargeEnd = end;

                // clear discharge window to avoid overlap
                c.TimeDischargeStart = TimeSpan.Zero;
                c.TimeDischargeEnd = TimeSpan.Zero;
            }
            else // Discharge
            {
                c.TimeDischargeStart = start;
                c.TimeDischargeEnd = end;

                // clear charge window to avoid overlap
                c.TimeChargeStart = TimeSpan.Zero;
                c.TimeChargeEnd = TimeSpan.Zero;
            }
        }


        private static void SetMode( StatusRecord statusrecord, OperatingPriority o)
        {
            var operatingMode = o switch
            {
                OperatingPriority.LoadPriority      => WorkingMode.SpontaneousSelfUse,
                OperatingPriority.BatteryPriority   => WorkingMode.TimeChargeDischarge,
                OperatingPriority.GridPriority      => WorkingMode.PrioritySellElectricity,
                _ => WorkingMode.SpontaneousSelfUse
            };

            if (statusrecord.InverterRecord.OperatingPriority != OperatingPriority.ModeNotSynched)
            {
                foreach (var inv in statusrecord?.InverterRecord.Devices)
                {
                    inv.WorkingMode  = operatingMode;
                }
            }
            else
            {
                foreach (var inv in statusrecord?.InverterRecord.Devices)
                {
                    Console.WriteLine(" Inverter mode are not synched");
                    inv.WorkingMode  = WorkingMode.SpontaneousSelfUse;
                }
            }
            return;
        }

        // ----------------------------
        // Decision logic
        // ----------------------------
        private static DesiredAction DecideDesiredAction(DateTime nowLocal, decimal? liveSpotPrice, Config c)
        {
            if (c.DynamicPricingMode == DynamicPricingMode.Disabled)
                return DesiredAction.OptimizeSelfUse;

            TimeSpan now = nowLocal.TimeOfDay;

            if (c.DynamicPricingMode == DynamicPricingMode.Tou)
            {
                bool isCheap = IsInTimeWindow(now,CheapStart, CheapEnd);
                bool isHigh = IsInTimeWindow(now, HighStart, HighEnd);

                // Priority: cheap -> charge, then high -> discharge
                if (isCheap) return DesiredAction.Charge;
                if (isHigh) return DesiredAction.Discharge;
                return DesiredAction.OptimizeSelfUse;
            }

            if (c.DynamicPricingMode == DynamicPricingMode.SpotPrice)
            {
                if (!liveSpotPrice.HasValue)
                    return DesiredAction.OptimizeSelfUse; // safe fallback

                if (c.CheapPrice >= c.HighPrice)
                    throw new ArgumentException("Config error: CheapPrice must be lower than HighPrice.");

                decimal p = liveSpotPrice.Value;

                if (p <= c.CheapPrice) return DesiredAction.Charge;
                if (p >= c.HighPrice) return DesiredAction.Discharge;
            }

            return DesiredAction.OptimizeSelfUse;
        }

        // ----------------------------
        // Helpers
        // ----------------------------
        /// <summary>
        /// [start, end) window, supports overnight. start==end means disabled.
        /// </summary>
        private static Boolean IsInTimeWindow(TimeSpan now, TimeSpan start, TimeSpan end)
        {
            if (start == end) return false;

            // Same-day
            if (start < end)
                return now >= start && now < end;

            // Overnight
            return now >= start || now < end;
        }

        private static (TimeSpan start, TimeSpan end) MakeRollingWindow(DateTime nowLocal, int minutes)
        {
            if (minutes <= 0) throw new ArgumentOutOfRangeException(nameof(minutes));

            var start = nowLocal.TimeOfDay;
            var end = (nowLocal + TimeSpan.FromMinutes(minutes)).TimeOfDay;
            return (start, end);
        }
    }
}*/