using System;
using System.Collections.Generic;
using System.Diagnostics;
using SUISS.Storage;
using UnityEngine;

namespace SUISS.Scheduling
{
    public class Timing : MonoBehaviour
    {
        //[DebuggerBrowsable(DebuggerBrowsableState.Never)]
        public event Timing.TimingChangeEndedHandler TimingChangeEnded;

        private void FireTimingChangeEnded()
        {
            if (this.TimingChangeEnded != null)
            {
                this.TimingChangeEnded();
            }
        }

        public static double scale
        {
            get
            {
                return Timing.Instance.GameScale;
            }
            set
            {
                Timing.Instance.GameScale = value;
            }
        }

        public static double time
        {
            get
            {
                return Timing.Instance.GameTime;
            }
        }

        public static DateTime ToUtc(double seconds)
        {
            return Timing.Instance.ToUtc_internal(seconds);
        }

        public static double UtcNow
        {
            get
            {
                return (double)DateTime.UtcNow.Ticks * 1E-07;
            }
        }

        public static long ConvertYMDhmsToUtc(string ymdhms)
        {
            long result;
            try
            {
                int year = int.Parse(ymdhms.Substring(0, 4));
                int month = int.Parse(ymdhms.Substring(4, 2));
                int day = int.Parse(ymdhms.Substring(6, 2));
                int hour = int.Parse(ymdhms.Substring(8, 2));
                int minute = int.Parse(ymdhms.Substring(10, 2));
                int second = int.Parse(ymdhms.Substring(12, 2));
                DateTime dateTime = new DateTime(year, month, day, hour, minute, second, DateTimeKind.Local);
                result = dateTime.ToUniversalTime().Ticks / 10000000L;
            }
            catch (Exception arg)
            {
                UnityEngine.Debug.LogWarning(string.Format("Unable to parse ymdhms format {0}: {1}.", ymdhms, arg));
                result = 0L;
            }
            return result;
        }

        public double GameScale
        {
            get
            {
                return this._scale;
            }
            set
            {
                this.SetBuildingScale(value);
                this.SetAnimationScale(value);
            }
        }

        public double GameTime
        {
            get
            {
                return (double)this._offset * 1E-07 + this.GameTimeWithoutOffset;
            }
        }

        public bool TimingChangeActive
        {
            get
            {
                return this._scale != 1.0;
            }
        }

        [Obsolete("Use Timing.GameTime")]
        public double t
        {
            get
            {
                return this.GameTime;
            }
        }

        [Obsolete("Use Timing.GameScale")]
        public double s
        {
            get
            {
                return this.GameScale;
            }
            set
            {
                this.GameScale = value;
            }
        }

        public void SetGameScale(double scale, double animationScaleMultiplier)
        {
            this.SetBuildingScale(scale);
            this.SetAnimationScale(scale * animationScaleMultiplier);
        }

        public void MakeTimeJump(TimeSpan jump)
        {
            this._offset += jump.Ticks;
            this._state["Offset"] = this._offset;
            this.FireTimingChangeEnded();
        }

        private double GameTimeWithoutOffset
        {
            get
            {
                return ((double)this._baseTime + (double)(DateTime.UtcNow.Ticks - this._startTicks) * this.GameScale) * 1E-07;
            }
        }

        private void SetBuildingScale(double scale)
        {
            this._baseTime = (long)(10000000.0 * this.GameTimeWithoutOffset);
            this._startTicks = DateTime.UtcNow.Ticks;
            this._state["StartTicks"] = this._startTicks;
            this._state["BaseTime"] = this._baseTime;
            this._scale = scale;
            if (scale == 1.0)
            {
                this.FireTimingChangeEnded();
            }
        }

        private void SetAnimationScale(double scale)
        {
            Time.timeScale = (float)Math.Max(1.0, Math.Min(this.maximumTimeScale, scale));
        }

        private DateTime ToUtc_internal(double seconds)
        {
            long ticks = (long)(seconds * 10000000.0 - (double)this._offset - (double)this._baseTime + (double)this._startTicks);
            return new DateTime(ticks);
        }

        private void Awake()
        {
            Timing.Instance = this;
            this._state = SUISS.Storage.Storage.Get(this.StorageLifecycle).GetDictionary(this.StorageKey);
            if (this._state.ContainsKey("StartTicks") && this._state.ContainsKey("BaseTime"))
            {
                this._startTicks = (long)this._state["StartTicks"];
                this._baseTime = (long)this._state["BaseTime"];
            }
            else
            {
                this._startTicks = DateTime.UtcNow.Ticks;
                this._baseTime = 0L;
                this._state["StartTicks"] = this._startTicks;
                this._state["BaseTime"] = this._baseTime;
            }
            object obj;
            if (this._state.TryGetValue("Offset", out obj) && obj is long)
            {
                this._offset = (long)obj;
            }
        }

        private void OnDestroy()
        {
            Time.timeScale = 1f;
        }

        [SerializeField]
        private StorageLifecycle StorageLifecycle = StorageLifecycle.Game;

        [SerializeField]
        private string StorageKey = "Timing";

        public double maximumTimeScale = 5.0;

        public const string BaseTimeKey = "BaseTime";

        public const string StartTicksKey = "StartTicks";

        public const string OffsetKey = "Offset";

        private long _baseTime;

        private long _startTicks = -1L;

        private long _offset;

        private Dictionary<string, object> _state;

        private double _scale = 1.0;

        public static Timing Instance;

        public delegate void TimingChangeEndedHandler();
    }
}