package com.gpl.rpg.atcontentstudio.ui.tools;

import java.util.ArrayList;
import java.util.List;

import com.gpl.rpg.atcontentstudio.model.GameDataElement;
import com.gpl.rpg.atcontentstudio.model.GameSource;
import com.gpl.rpg.atcontentstudio.model.gamedata.ActorCondition;
import com.gpl.rpg.atcontentstudio.model.gamedata.Dialogue;
import com.gpl.rpg.atcontentstudio.model.gamedata.Droplist;
import com.gpl.rpg.atcontentstudio.model.gamedata.Item;
import com.gpl.rpg.atcontentstudio.model.gamedata.ItemCategory;
import com.gpl.rpg.atcontentstudio.model.gamedata.NPC;
import com.gpl.rpg.atcontentstudio.model.gamedata.Quest;
import com.gpl.rpg.atcontentstudio.model.gamedata.Requirement;
import com.gpl.rpg.atcontentstudio.model.maps.ContainerArea;
import com.gpl.rpg.atcontentstudio.model.maps.KeyArea;
import com.gpl.rpg.atcontentstudio.model.maps.MapChange;
import com.gpl.rpg.atcontentstudio.model.maps.MapObject;
import com.gpl.rpg.atcontentstudio.model.maps.MapObjectGroup;
import com.gpl.rpg.atcontentstudio.model.maps.ReplaceArea;
import com.gpl.rpg.atcontentstudio.model.maps.RestArea;
import com.gpl.rpg.atcontentstudio.model.maps.ScriptArea;
import com.gpl.rpg.atcontentstudio.model.maps.SignArea;
import com.gpl.rpg.atcontentstudio.model.maps.SpawnArea;
import com.gpl.rpg.atcontentstudio.model.maps.TMXMap;
import com.gpl.rpg.atcontentstudio.model.sprites.Spritesheet;

public class GDEVisitor {

	public static List<GameDataElement> findDependencies(GameDataElement origin, boolean includeSource) {
		List<GameDataElement> visited = new ArrayList<GameDataElement>();
		visit(origin, visited, includeSource);
		return visited;
	}
	
	private static void visit(GameDataElement element, List<GameDataElement> visited, boolean includeSource) {
		if (element == null) return;
		if (visited.contains(element)) return;
		if (!(includeSource || element.getDataType() != GameSource.Type.source)) return;
		
		visited.add(element);
		element.link();
		if (element instanceof ActorCondition) {
			visitActorCondition((ActorCondition)element, visited, includeSource);
		} else if (element instanceof Dialogue) {
			visitDialogue((Dialogue)element, visited, includeSource);
		} else if (element instanceof Droplist) {
			visitDroplist((Droplist)element, visited, includeSource);
		} else if (element instanceof Item) {
			visitItem((Item)element, visited, includeSource);
		} else if (element instanceof ItemCategory) {
			visitItemCategory((ItemCategory)element, visited, includeSource);
		} else if (element instanceof NPC) {
			visitNPC((NPC)element, visited, includeSource);
		} else if (element instanceof Quest) {
			visitQuest((Quest)element, visited, includeSource);
		} else if (element instanceof TMXMap) {
			visitTMXMap((TMXMap)element, visited, includeSource);
		} else if (element instanceof Spritesheet) {
			visitSpritesheet((Spritesheet)element, visited, includeSource);
		}
		
	}

	private static void visitActorCondition(ActorCondition element, List<GameDataElement> visited, boolean includeSource) {
		if (element.icon_id != null) visit(element.getProject().getSpritesheet(element.icon_id.split(":")[0]), visited, includeSource);

		for (GameDataElement backlink : element.getBacklinks()) {
			visit(backlink, visited, includeSource);
		}
	}

	private static void visitDialogue(Dialogue element, List<GameDataElement> visited, boolean includeSource) {
		visit(element.switch_to_npc, visited, includeSource);
		if (element.replies != null) {
			for (Dialogue.Reply reply : element.replies) {
				visit(reply.next_phrase, visited, includeSource);
				if (reply.requirements != null) {
					for (Requirement req : reply.requirements) {
						visit(req.required_obj, visited, includeSource);
					}
				}
			}
		}
		if (element.rewards != null) {
			for (Dialogue.Reward reward : element.rewards) {
				visit(reward.reward_obj, visited, includeSource);
				visit(reward.map, visited, includeSource);
			}
		}
		
		for (GameDataElement backlink : element.getBacklinks()) {
			visit(backlink, visited, includeSource);
		}
	}

	private static void visitDroplist(Droplist element, List<GameDataElement> visited, boolean includeSource) {
		if (element.dropped_items != null) {
			for (Droplist.DroppedItem droppedItem : element.dropped_items) {
				visit(droppedItem.item, visited, includeSource);
			}
		}
		
		for (GameDataElement backlink : element.getBacklinks()) {
			visit(backlink, visited, includeSource);
		}
	}

	private static void visitItem(Item element, List<GameDataElement> visited, boolean includeSource) {
		visit(element.category, visited, includeSource);
		if (element.icon_id != null) visit(element.getProject().getSpritesheet(element.icon_id.split(":")[0]), visited, includeSource);
		if (element.equip_effect != null && element.equip_effect.conditions != null) {
			for (Item.ConditionEffect condEffect : element.equip_effect.conditions) {
				visit(condEffect.condition, visited, includeSource);
			}
		}
		if (element.hit_effect != null) { 
			if (element.hit_effect.conditions_source != null) {
				for (Item.ConditionEffect condEffect : element.hit_effect.conditions_source) {
					visit(condEffect.condition, visited, includeSource);
				}
			}
			if (element.hit_effect.conditions_target != null) {
				for (Item.ConditionEffect condEffect : element.hit_effect.conditions_target) {
					visit(condEffect.condition, visited, includeSource);
				}
			}
		}
		

		for (GameDataElement backlink : element.getBacklinks()) {
			visit(backlink, visited, includeSource);
		}
	}

	private static void visitItemCategory(ItemCategory element, List<GameDataElement> visited, boolean includeSource) {
		//Nothing to visit
	}

	private static void visitNPC(NPC element, List<GameDataElement> visited, boolean includeSource) {
		visit(element.dialogue, visited, includeSource);
		visit(element.droplist, visited, includeSource);
		if (element.icon_id != null) visit(element.getProject().getSpritesheet(element.icon_id.split(":")[0]), visited, includeSource);
		if (element.hit_effect != null) {
			if (element.hit_effect.conditions_source != null) {
				for (NPC.TimedConditionEffect condEffect : element.hit_effect.conditions_source) {
					visit(condEffect.condition, visited, includeSource);
				}
			}
			if (element.hit_effect.conditions_target != null) {
				for (NPC.TimedConditionEffect condEffect : element.hit_effect.conditions_target) {
					visit(condEffect.condition, visited, includeSource);
				}
			}
		}
		

		for (GameDataElement backlink : element.getBacklinks()) {
			visit(backlink, visited, includeSource);
		}
	}

	private static void visitQuest(Quest element, List<GameDataElement> visited, boolean includeSource) {
		//Nothing to visit
		

		for (GameDataElement backlink : element.getBacklinks()) {
			visit(backlink, visited, includeSource);
		}
	}

	private static void visitTMXMap(TMXMap element, List<GameDataElement> visited, boolean includeSource) {
		// TODO Auto-generated method stub
		if (element.groups != null) {
			for (MapObjectGroup group : element.groups) {
				if (group.mapObjects != null) {
					for (MapObject obj : group.mapObjects) {
						if (obj instanceof ContainerArea) {
							visit(((ContainerArea)obj).droplist, visited, includeSource);
						} else if (obj instanceof KeyArea) {
							visit(((KeyArea)obj).dialogue, visited, includeSource);
							if (((KeyArea)obj).requirement != null) {
								visit(((KeyArea)obj).requirement.required_obj, visited, includeSource);
							}
						} else if (obj instanceof MapChange) {
							visit(((MapChange)obj).map, visited, includeSource);
						} else if (obj instanceof ReplaceArea) {
							if (((ReplaceArea)obj).requirement != null) {
								visit(((ReplaceArea)obj).requirement.required_obj, visited, includeSource);
							}
						} else if (obj instanceof RestArea) {
							//Nothing to visit
						} else if (obj instanceof ScriptArea) {
							visit(((ScriptArea)obj).dialogue, visited, includeSource);
						} else if (obj instanceof SignArea) {
							visit(((SignArea)obj).dialogue, visited, includeSource);
						} else if (obj instanceof SpawnArea) {
							if (((SpawnArea)obj).spawnGroup != null) {
								for (NPC npc : ((SpawnArea)obj).spawnGroup) {
									visit(npc, visited, includeSource);
								}
							}
						}
					}
				}
			}
		}
		
		for (GameDataElement backlink : element.getBacklinks()) {
			visit(backlink, visited, includeSource);
		}
	}

	private static void visitSpritesheet(Spritesheet element, List<GameDataElement> visited, boolean includeSource) {
		//Nothing to visit
		
		//Not even the backlinks. Makes no sense.
	}
	
	
	
}