using Cryville.Common.Pdt;
using Cryville.Crtr.Components;
using Cryville.Crtr.Event;
using System;
using System.Collections.Generic;
using UnityEngine;

namespace Cryville.Crtr {
#if false
	[Obsolete]
	public class SkinManager {
		readonly CompiledSkin skin;
		readonly Dictionary<Element, Transform> matchedStatic
			= new Dictionary<Element, Transform>();
		readonly Dictionary<Element, Transform> matchedDynamic
			= new Dictionary<Element, Transform>();
		public SkinManager(CompiledSkin _skin) {
			skin = _skin;
		}

		public void MatchStatic(Evaluator etor, ContainerState context) {
			matchedStatic.Clear();
			MatchStatic(skin, context, context.Handler.gogroup);

			foreach (var m in matchedStatic) {
				var el = m.Key;
				var obj = m.Value;
				foreach (var c in el.components) {
					obj.gameObject.AddComponent(GetComponentByName(c));
				}
				foreach (var p in el.properties) {
					ParseProperty(obj, p.Key, p.Value, context, etor);
				}
			}
		}
		void MatchStatic(Element rel, ContainerState context, Transform anchor = null) {
			matchedStatic.Add(rel, anchor);
			foreach (var r in rel.elements) {
				var new_anchor = r.Key.MatchStatic(context, anchor);
				if (new_anchor != null) {
					MatchStatic(r.Value, context, new_anchor);
				}
			}
		}
		public void MatchDynamic(Evaluator etor, ContainerState context) {
			UnityEngine.Profiling.Profiler.BeginSample("SkinManager.MatchDynamic()");
			matchedDynamic.Clear();
			MatchDynamic(skin, context, context.Handler.gogroup);
			
			foreach (var m in matchedDynamic) {
				var el = m.Key;
				var obj = m.Value;
				/*foreach (var c in el.components) {
					if (obj.gameObject.GetComponent(GetComponentByName(c)) == null)
						obj.gameObject.AddComponent(GetComponentByName(c));
				}*/
				foreach (var p in el.properties) {
					if (!p.Value.IsDynamic) continue;
					ParseProperty(obj, p.Key, p.Value, context, etor);
				}
			}
			UnityEngine.Profiling.Profiler.EndSample();
		}
		void MatchDynamic(Element rel, ContainerState context, Transform anchor = null) {
			matchedDynamic.Add(rel, anchor);
			foreach (var r in rel.elements) {
				Transform new_anchor;
				/*if (r.Value.IsDynamic) {
					new_anchor = r.Key.MatchDynamic(
						context, r.Value, null, anchor
					);
				}
				else {*/
					if (!matchedStatic.ContainsKey(r.Value)) continue;
					if (!r.Key.IsUpdatable(context)) continue;
					new_anchor = r.Key.MatchDynamic(
						context, r.Value, matchedStatic[r.Value], anchor
					);
				//}
				if (new_anchor != null) {
					MatchDynamic(r.Value, context, new_anchor);
				}
			}
		}

		void ParseProperty(Transform obj, string key, Expression value, ContainerState context, Evaluator etor) {
			etor.Context = new EvaluatorContext() {
				// Extra = context.judge.GetScoreStrings(),
				State = context,
				Transform = obj,
			};
			/*var keytuple = key.Split('#');
			int matid = 0;*/
			switch (key) {
				/*case "tex":
					if (int.TryParse(keytuple[1], out matid) || keytuple.Length == 1) {
						var mat = obj.GetComponent<Renderer>().materials[matid];
						var frame = ChartPlayer.frames[value.Eval<string>(etor)];
						var tex = frame.Texture;
						if (keytuple.Length == 2) mat.mainTexture = tex;
						else mat.SetTexture(keytuple[2], tex);
					}
					else throw new ArgumentException(); // TODO
					break;*/
				/*case "shader":
					if (int.TryParse(keytuple[1], out matid) || keytuple.Length == 1) {
						var mat = obj.GetComponent<Renderer>().materials[matid];
						// TODO mat.shader = value.Eval<string>(etor);
					}
					else throw new ArgumentException(); // TODO
					break;*/
				case "pos":
					obj.localPosition = value.Eval<Vector3>(etor);
					break;
				case "rot":
					obj.localRotation = Quaternion.Euler(value.Eval<Vector3>(etor));
					break;
				case "scale":
					var s = value.Eval<Vector3>(etor);
					if (s.z == 0) s.z = 1;
					obj.localScale = s;
					break;
				default:
					var cp = key.Split('.');
					if (cp.Length == 2) {
						var ctype = GetComponentByName(cp[0]);
						var comp = (SkinComponent)obj.GetComponent(ctype);
						if (!comp.Properties.ContainsKey(cp[1]))
							throw new ArgumentException(string.Format("Property {0}.{1} not found", cp[0], cp[1]));
						var prop = comp.Properties[cp[1]];
						/*MemberInfo[] mi = ctype.GetMember(cp[1]);
						for (var i = 2; i < cp.Length; i++) {
							prop = ReflectionHelper.GetValue(mi[0], prop);
							ctype = prop.GetType();
							mi = ctype.GetMember(cp[i]);
							if (mi.Length != 1)
								throw new ArgumentException(); // TODO
						}
						ReflectionHelper.SetValue(mi[0], prop, etor.Cast(
							ReflectionHelper.GetMemberType(mi[0]),
							value.Eval(etor)
						));*/
						var r = value.Eval(etor);
						prop.Set(etor.Cast(prop.Type, r));
					}
					else
						throw new NotImplementedException("Unknown property " + key);
					break;
			}
		}

		static readonly char[] nssep = new char[]{':'};
		Type GetComponentByName(string name) {
			var nstuple = name.Split(nssep, 2);
			var ns = nssep.Length == 2 ? nstuple[0] : "generic";
			name = nssep.Length == 2 ? nstuple[1] : nstuple[0];
			if (ns == "generic")
				return GenericResources.Components[name];
			throw new ArgumentException(); // TODO
		}
	}
#endif
}