package emu.grasscutter.scripts;

import emu.grasscutter.game.dungeons.challenge.DungeonChallenge;
import emu.grasscutter.game.entity.EntityGadget;
import emu.grasscutter.game.entity.EntityMonster;
import emu.grasscutter.game.entity.GameEntity;
import emu.grasscutter.game.entity.gadget.GadgetWorktop;
import emu.grasscutter.game.dungeons.challenge.factory.ChallengeFactory;
import emu.grasscutter.scripts.data.SceneGroup;
import emu.grasscutter.scripts.data.SceneRegion;
import emu.grasscutter.server.packet.send.PacketCanUseSkillNotify;
import emu.grasscutter.server.packet.send.PacketWorktopOptionNotify;
import io.netty.util.concurrent.FastThreadLocal;
import org.luaj.vm2.LuaTable;
import org.luaj.vm2.LuaValue;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.Optional;

public class ScriptLib {
	public static final Logger logger = LoggerFactory.getLogger(ScriptLib.class);
	private final FastThreadLocal<SceneScriptManager> sceneScriptManager;
	private final FastThreadLocal<SceneGroup> currentGroup;
	public ScriptLib() {
		this.sceneScriptManager = new FastThreadLocal<>();
		this.currentGroup = new FastThreadLocal<>();
	}

	public void setSceneScriptManager(SceneScriptManager sceneScriptManager){
		this.sceneScriptManager.set(sceneScriptManager);
	}

	public void removeSceneScriptManager(){
		this.sceneScriptManager.remove();
	}

	public SceneScriptManager getSceneScriptManager() {
		// normally not null
		return Optional.of(sceneScriptManager.get()).get();
	}

	private String printTable(LuaTable table){
		StringBuilder sb = new StringBuilder();
		sb.append("{");
		for(var meta : table.keys()){
			sb.append(meta).append(":").append(table.get(meta)).append(",");
		}
		sb.append("}");
		return sb.toString();
	}
	public void setCurrentGroup(SceneGroup currentGroup){
		this.currentGroup.set(currentGroup);
	}
	public Optional<SceneGroup> getCurrentGroup(){
		return Optional.of(this.currentGroup.get());
	}
	public void removeCurrentGroup(){
		this.currentGroup.remove();
	}
	public int SetGadgetStateByConfigId(int configId, int gadgetState) {
		logger.debug("[LUA] Call SetGadgetStateByConfigId with {},{}",
				configId,gadgetState);
		Optional<GameEntity> entity = getSceneScriptManager().getScene().getEntities().values().stream()
				.filter(e -> e.getConfigId() == configId).findFirst();

		if (entity.isEmpty()) {
			return 1;
		}

		if (entity.get() instanceof EntityGadget entityGadget) {
			entityGadget.updateState(gadgetState);
			return 0;
		}

		return 1;
	}

	public int SetGroupGadgetStateByConfigId(int groupId, int configId, int gadgetState) {
		logger.debug("[LUA] Call SetGroupGadgetStateByConfigId with {},{},{}",
				groupId,configId,gadgetState);

		getSceneScriptManager().getScene().getEntities().values().stream()
				.filter(e -> e.getGroupId() == groupId)
				.filter(e -> e instanceof EntityGadget)
				.map(e -> (EntityGadget)e)
				.forEach(e -> e.updateState(gadgetState));
		
		return 0;
	}
	
	public int SetWorktopOptionsByGroupId(int groupId, int configId, int[] options) {
		logger.debug("[LUA] Call SetWorktopOptionsByGroupId with {},{},{}",
				groupId,configId,options);
		
		Optional<GameEntity> entity = getSceneScriptManager().getScene().getEntities().values().stream()
				.filter(e -> e.getConfigId() == configId && e.getGroupId() == groupId).findFirst();


		if (entity.isEmpty() || !(entity.get() instanceof EntityGadget gadget)) {
			return 1;
		}

		if (!(gadget.getContent() instanceof GadgetWorktop worktop)) {
			return 1;
		}
		
		worktop.addWorktopOptions(options);
		getSceneScriptManager().getScene().broadcastPacket(new PacketWorktopOptionNotify(gadget));
		
		return 0;
	}

	public int SetWorktopOptions(LuaTable table){
		logger.debug("[LUA] Call SetWorktopOptions with {}", printTable(table));
		// TODO
		return 0;
	}
	public int DelWorktopOptionByGroupId(int groupId, int configId, int option) {
		logger.debug("[LUA] Call DelWorktopOptionByGroupId with {},{},{}",groupId,configId,option);

		Optional<GameEntity> entity = getSceneScriptManager().getScene().getEntities().values().stream()
				.filter(e -> e.getConfigId() == configId && e.getGroupId() == groupId).findFirst();

		if (entity.isEmpty() || !(entity.get() instanceof EntityGadget gadget)) {
			return 1;
		}

		if (!(gadget.getContent() instanceof GadgetWorktop worktop)) {
			return 1;
		}
		
		worktop.removeWorktopOption(option);
		getSceneScriptManager().getScene().broadcastPacket(new PacketWorktopOptionNotify(gadget));
		
		return 0;
	}
	
	// Some fields are guessed
	public int AutoMonsterTide(int challengeIndex, int groupId, Integer[] ordersConfigId, int tideCount, int sceneLimit, int param6) {
		logger.debug("[LUA] Call AutoMonsterTide with {},{},{},{},{},{}",
				challengeIndex,groupId,ordersConfigId,tideCount,sceneLimit,param6);

		SceneGroup group = getSceneScriptManager().getGroupById(groupId);

		if (group == null || group.monsters == null) {
			return 1;
		}

		this.getSceneScriptManager().startMonsterTideInGroup(group, ordersConfigId, tideCount, sceneLimit);
		
		return 0;
	}
	
	public int AddExtraGroupSuite(int groupId, int suite) {
		logger.debug("[LUA] Call AddExtraGroupSuite with {},{}",
				groupId,suite);
		SceneGroup group = getSceneScriptManager().getGroupById(groupId);
		
		if (group == null || group.monsters == null) {
			return 1;
		}
		var suiteData = group.getSuiteByIndex(suite);
		if(suiteData == null){
			return 1;
		}
		// avoid spawn wrong monster
		if(getSceneScriptManager().getScene().getChallenge() != null)
			if(!getSceneScriptManager().getScene().getChallenge().inProgress() ||
					getSceneScriptManager().getScene().getChallenge().getGroup().id != groupId){
			return 0;
		}
		this.getSceneScriptManager().addGroupSuite(group, suiteData);

		return 0;
	}
	public int GoToGroupSuite(int groupId, int suite) {
		logger.debug("[LUA] Call GoToGroupSuite with {},{}",
				groupId,suite);
		SceneGroup group = getSceneScriptManager().getGroupById(groupId);
		if (group == null || group.monsters == null) {
			return 1;
		}
		var suiteData = group.getSuiteByIndex(suite);
		if(suiteData == null){
			return 1;
		}

		for(var suiteItem : group.suites){
			if(suiteData == suiteItem){
				continue;
			}
			this.getSceneScriptManager().removeGroupSuite(group, suiteItem);
		}
		this.getSceneScriptManager().addGroupSuite(group, suiteData);

		return 0;
	}
	public int RemoveExtraGroupSuite(int groupId, int suite) {
		logger.debug("[LUA] Call RemoveExtraGroupSuite with {},{}",
				groupId,suite);

		SceneGroup group = getSceneScriptManager().getGroupById(groupId);
		if (group == null || group.monsters == null) {
			return 1;
		}
		var suiteData = group.getSuiteByIndex(suite);
		if(suiteData == null){
			return 1;
		}

		this.getSceneScriptManager().removeGroupSuite(group, suiteData);

		return 0;
	}
	public int KillExtraGroupSuite(int groupId, int suite) {
		logger.debug("[LUA] Call KillExtraGroupSuite with {},{}",
				groupId,suite);

		SceneGroup group = getSceneScriptManager().getGroupById(groupId);
		if (group == null || group.monsters == null) {
			return 1;
		}
		var suiteData = group.getSuiteByIndex(suite);
		if(suiteData == null){
			return 1;
		}

		this.getSceneScriptManager().removeGroupSuite(group, suiteData);

		return 0;
	}
	// param3 (probably time limit for timed dungeons)
	public int ActiveChallenge(int challengeId, int challengeIndex, int timeLimitOrGroupId, int groupId, int objectiveKills, int param5) {
		logger.debug("[LUA] Call ActiveChallenge with {},{},{},{},{},{}",
				challengeId,challengeIndex,timeLimitOrGroupId,groupId,objectiveKills,param5);

		var challenge = ChallengeFactory.getChallenge(
				challengeId,
				challengeIndex,
				timeLimitOrGroupId,
				groupId,
				objectiveKills,
				param5,
				getSceneScriptManager().getScene(),
				getCurrentGroup().get()
				);

		if(challenge == null){
			return 1;
		}

		if(challenge instanceof DungeonChallenge dungeonChallenge){
			// set if tower first stage (6-1)
			dungeonChallenge.setStage(getSceneScriptManager().getVariables().getOrDefault("stage", -1) == 0);
		}

		getSceneScriptManager().getScene().setChallenge(challenge);
		challenge.start();
		return 0;
	}
	
	public int GetGroupMonsterCountByGroupId(int groupId) {
		logger.debug("[LUA] Call GetGroupMonsterCountByGroupId with {}",
				groupId);
		return (int) getSceneScriptManager().getScene().getEntities().values().stream()
								.filter(e -> e instanceof EntityMonster && e.getGroupId() == groupId)
								.count();
	}
	
	public int GetGroupVariableValue(String var) {
		logger.debug("[LUA] Call GetGroupVariableValue with {}",
				var);
		return getSceneScriptManager().getVariables().getOrDefault(var, 0);
	}
	
	public int SetGroupVariableValue(String var, int value) {
		logger.debug("[LUA] Call SetGroupVariableValue with {},{}",
				var, value);
		getSceneScriptManager().getVariables().put(var, value);
		return 0;
	}
	
	public LuaValue ChangeGroupVariableValue(String var, int value) {
		logger.debug("[LUA] Call ChangeGroupVariableValue with {},{}",
				var, value);

		getSceneScriptManager().getVariables().put(var, getSceneScriptManager().getVariables().get(var) + value);
		return LuaValue.ZERO;
	}

	/**
	 * Set the actions and triggers to designated group
	 */
	public int RefreshGroup(LuaTable table) {
		logger.debug("[LUA] Call RefreshGroup with {}",
				printTable(table));
		// Kill and Respawn?
		int groupId = table.get("group_id").toint();
		int suite = table.get("suite").toint();
		
		SceneGroup group = getSceneScriptManager().getGroupById(groupId);
		
		if (group == null || group.monsters == null) {
			return 1;
		}
		
		getSceneScriptManager().refreshGroup(group, suite);
		
		return 0;
	}
	
	public int GetRegionEntityCount(LuaTable table) {
		logger.debug("[LUA] Call GetRegionEntityCount with {}",
				printTable(table));
		int regionId = table.get("region_eid").toint();
		int entityType = table.get("entity_type").toint();

		SceneRegion region = this.getSceneScriptManager().getRegionById(regionId);
		
		if (region == null) {
			return 0;
		}

		return (int) region.getEntities().intStream().filter(e -> e >> 24 == entityType).count();
	}
	
	public void PrintContextLog(String msg) {
		logger.info("[LUA] " + msg);
	}

	public int TowerCountTimeStatus(int isDone, int var2){
		logger.debug("[LUA] Call TowerCountTimeStatus with {},{}",
				isDone,var2);
		// TODO record time
		return 0;
	}
	public int GetGroupMonsterCount(){
		logger.debug("[LUA] Call GetGroupMonsterCount ");

		return (int) getSceneScriptManager().getScene().getEntities().values().stream()
				.filter(e -> e instanceof EntityMonster &&
						e.getGroupId() == getCurrentGroup().map(sceneGroup -> sceneGroup.id).orElse(-1))
				.count();
	}
	public int SetMonsterBattleByGroup(int var1, int var2, int var3){
		logger.debug("[LUA] Call SetMonsterBattleByGroup with {},{},{}",
				var1,var2,var3);
		// TODO
		return 0;
	}

	public int CauseDungeonFail(int var1){
		logger.debug("[LUA] Call CauseDungeonFail with {}",
				var1);

		return 0;
	}

	public int GetGroupVariableValueByGroup(String name, int groupId){
		logger.debug("[LUA] Call GetGroupVariableValueByGroup with {},{}",
				name,groupId);

		return getSceneScriptManager().getVariables().getOrDefault(name, 0);
	}

	public int SetIsAllowUseSkill(int canUse, int var2){
		logger.debug("[LUA] Call SetIsAllowUseSkill with {},{}",
				canUse,var2);

		getSceneScriptManager().getScene().broadcastPacket(new PacketCanUseSkillNotify(canUse == 1));
		return 0;
	}

	public int KillEntityByConfigId(LuaTable table){
		logger.debug("[LUA] Call KillEntityByConfigId with {}",
				printTable(table));
		var configId = table.get("config_id");
		if(configId == LuaValue.NIL){
			return 1;
		}

		var entity = getSceneScriptManager().getScene().getEntityByConfigId(configId.toint());
		if(entity == null){
			return 0;
		}
		getSceneScriptManager().getScene().killEntity(entity, 0);
		return 0;
	}

	public int SetGroupVariableValueByGroup(String key, int value, int groupId){
		logger.debug("[LUA] Call SetGroupVariableValueByGroup with {},{},{}",
				key,value,groupId);

		getSceneScriptManager().getVariables().put(key, value);
		return 0;
	}

	public int CreateMonster(LuaTable table){
		logger.debug("[LUA] Call CreateMonster with {}",
				printTable(table));
		var configId = table.get("config_id").toint();
		var delayTime = table.get("delay_time").toint();

		if(getCurrentGroup().isEmpty()){
			return 1;
		}

		getSceneScriptManager().spawnMonstersByConfigId(getCurrentGroup().get(), configId, delayTime);
		return 0;
	}

	public int TowerMirrorTeamSetUp(int team, int var1) {
		logger.debug("[LUA] Call TowerMirrorTeamSetUp with {},{}",
				team,var1);

		getSceneScriptManager().unloadCurrentMonsterTide();
		getSceneScriptManager().getScene().getPlayers().get(0).getTowerManager().mirrorTeamSetUp(team-1);

		return 0;
	}

	public int CreateGadget(LuaTable table){
		logger.debug("[LUA] Call CreateGadget with {}",
				printTable(table));
		var configId = table.get("config_id").toint();

		var group = getCurrentGroup();
		
		if (group.isEmpty()) {
			return 1;
		}
		
		var gadget = group.get().gadgets.get(configId);
		var entity = getSceneScriptManager().createGadget(group.get().id, group.get().block_id, gadget);
		
		getSceneScriptManager().addEntity(entity);

		return 0;
	}
	public int CheckRemainGadgetCountByGroupId(LuaTable table){
		logger.debug("[LUA] Call CheckRemainGadgetCountByGroupId with {}",
				printTable(table));
		var groupId = table.get("group_id").toint();

		var count = getSceneScriptManager().getScene().getEntities().values().stream()
				.filter(g -> g instanceof EntityGadget entityGadget && entityGadget.getGroupId() == groupId)
				.count();
		return (int)count;
	}

	public int GetGadgetStateByConfigId(int groupId, int configId){
		logger.debug("[LUA] Call GetGadgetStateByConfigId with {},{}",
				groupId, configId);

		if(groupId == 0){
			groupId = getCurrentGroup().get().id;
		}
		final int realGroupId = groupId;
		var gadget = getSceneScriptManager().getScene().getEntities().values().stream()
				.filter(g -> g instanceof EntityGadget entityGadget && entityGadget.getGroupId() == realGroupId)
				.filter(g -> g.getConfigId() == configId)
				.findFirst();
		if(gadget.isEmpty()){
			return 1;
		}
		return ((EntityGadget)gadget.get()).getState();
	}

	public int MarkPlayerAction(int var1, int var2, int var3, int var4){
		logger.debug("[LUA] Call MarkPlayerAction with {},{},{},{}",
				var1, var2,var3,var4);

		return 0;
	}

	public int AddQuestProgress(String var1){
		logger.debug("[LUA] Call AddQuestProgress with {}",
				var1);

		return 0;
	}

	/**
	 * change the state of gadget
	 */
	public int ChangeGroupGadget(LuaTable table){
		logger.debug("[LUA] Call ChangeGroupGadget with {}",
				printTable(table));
		var configId = table.get("config_id").toint();
		var state = table.get("state").toint();

		var entity = getSceneScriptManager().getScene().getEntityByConfigId(configId);
		if(entity == null){
			return 1;
		}

		if (entity instanceof EntityGadget entityGadget) {
			entityGadget.updateState(state);
			return 0;
		}

		return 1;
	}
}