using System;
using System.Collections.Generic;
using System.Net;

namespace esh.core
{
	public class Components
	{
		public class Sensor
		{
			public readonly string Mac;
			public string DataType;
			public string SensorType;
			public string Value;
			public string DisplayUnit;
			public DateTime LastUpdated;
			public string CustomName;
			public string CustomDescription;

			public Sensor(string mac)
			{
				Mac = mac;
				LastUpdated = DateTime.Now;
			}
		}

		public class Actor
		{
			public readonly string Mac;
			public IPAddress LastKnownIP;
			public string LastKnownState;
			public string ActorType;
			public string WantsDataType;
			public DateTime LastPing;
			public string CustomName;
			public string CustomDescription;

			public Actor(string mac)
			{
				Mac = mac;
				LastPing = DateTime.Now;
			}
		}
		
		public class Value
		{
			public enum ValueType
			{
				Integer,
				Boolean,
				Double,
				String
			}

			public ValueType Type;
			public string StringValue;
		}

		public class Trigger
		{
			public class Condition
			{
				public enum ConditionType
				{
					ValueExact, //when sensor value is EXACTLY x
					ThresholdRisingEdge, //when value goes above threshold
					ThresholdFallingEdge, //when value goes below threshold
					ValueChanged, //when sensor value is different than before TODO!
					Time //TODO: intervals and stuff
				}

				public ConditionType Type;
				public Value CheckValue;
				private bool thresholdCheck = false;

				public bool IsMet(Value sourceValue)
				{
					if (sourceValue.Type != CheckValue.Type)
						return false;

					switch (Type)
					{
						case ConditionType.ValueExact:
							return sourceValue.StringValue == CheckValue.StringValue;
						case ConditionType.ThresholdRisingEdge:
							switch (sourceValue.Type)
							{
								case Value.ValueType.Integer:
									if (int.Parse(sourceValue.StringValue) > int.Parse(CheckValue.StringValue) && !thresholdCheck)
									{
										thresholdCheck = true;
										return true;
									}
									else if (int.Parse(sourceValue.StringValue) < int.Parse(CheckValue.StringValue) &&
									         thresholdCheck)
									{
										thresholdCheck = false;
									}

									return false;
								case Value.ValueType.Boolean:
									if (bool.Parse(sourceValue.StringValue) == bool.Parse(CheckValue.StringValue) &&
									    !thresholdCheck)
									{
										thresholdCheck = true;
										return true;
									}
									else if (bool.Parse(sourceValue.StringValue) != bool.Parse(CheckValue.StringValue) &&
									    thresholdCheck)
									{
										thresholdCheck = false;
									}
									return false;
								case Value.ValueType.Double:
									if (double.Parse(sourceValue.StringValue) > double.Parse(CheckValue.StringValue) && !thresholdCheck)
									{
										thresholdCheck = true;
										return true;
									}
									else if (double.Parse(sourceValue.StringValue) < double.Parse(CheckValue.StringValue) &&
									         thresholdCheck)
									{
										thresholdCheck = false;
									}

									return false;
								case Value.ValueType.String:
									return false;
								default:
									throw new ArgumentOutOfRangeException();
							}
						case ConditionType.ThresholdFallingEdge:
							switch (sourceValue.Type)
							{
								case Value.ValueType.Integer:
									if (int.Parse(sourceValue.StringValue) < int.Parse(CheckValue.StringValue) && !thresholdCheck)
									{
										thresholdCheck = true;
										return true;
									}
									else if (int.Parse(sourceValue.StringValue) > int.Parse(CheckValue.StringValue) &&
									         thresholdCheck)
									{
										thresholdCheck = false;
									}

									return false;
								case Value.ValueType.Boolean:
									if (bool.Parse(sourceValue.StringValue) != bool.Parse(CheckValue.StringValue) &&
									    !thresholdCheck)
									{
										thresholdCheck = true;
										return true;
									}
									else if (bool.Parse(sourceValue.StringValue) == bool.Parse(CheckValue.StringValue) &&
									         thresholdCheck)
									{
										thresholdCheck = false;
									}
									return false;
								case Value.ValueType.Double:
									if (double.Parse(sourceValue.StringValue) < double.Parse(CheckValue.StringValue) && !thresholdCheck)
									{
										thresholdCheck = true;
										return true;
									}
									else if (double.Parse(sourceValue.StringValue) > double.Parse(CheckValue.StringValue) &&
									         thresholdCheck)
									{
										thresholdCheck = false;
									}

									return false;
								case Value.ValueType.String:
									return false;
								default:
									throw new ArgumentOutOfRangeException();
							}
						case ConditionType.Time:
							return false;
						default:
							throw new ArgumentOutOfRangeException();
					}
				}
			}

			public class Action
			{
				public enum ActionType
				{
					Passthrough, //1:1 sends source value to target
					Math, //runs formula to process source value first
					Value //sends constant value if condition met
				}

				public ActionType Type;
			}

			public string Name;
			public string id;
			public DateTime LastTrigger;
			public Condition condition;
			public Action action;
			public List<Trigger> dependencies; //triggers can depend on other triggers for combinations
			public Sensor source; //can be null ONLY if Type = Time
			public Actor target; //can be null (for dep triggers)

			public Trigger(string name, Condition condition, Action action, List<Trigger> dependencies = null, Sensor source = null, Actor target = null)
			{
				if (dependencies == null)
					dependencies = new List<Trigger>();
				Name = name;
				id = Guid.NewGuid().ToString();
				LastTrigger = DateTime.UnixEpoch;
				this.condition = condition;
				this.action = action;
				this.dependencies = dependencies;
				this.source = source;
				this.target = target;
			}
		}
	}
}