package emu.grasscutter.game.quest;

import java.beans.Transient;
import java.util.*;
import java.util.function.Consumer;
import java.util.stream.Collectors;

import emu.grasscutter.Grasscutter;
import emu.grasscutter.data.GameData;
import emu.grasscutter.data.binout.MainQuestData;
import emu.grasscutter.data.excels.QuestData;
import emu.grasscutter.data.excels.QuestData.QuestCondition;
import emu.grasscutter.database.DatabaseHelper;
import emu.grasscutter.game.player.BasePlayerManager;
import emu.grasscutter.game.player.Player;
import emu.grasscutter.game.quest.enums.ParentQuestState;
import emu.grasscutter.game.quest.enums.QuestTrigger;
import emu.grasscutter.game.quest.enums.LogicType;
import emu.grasscutter.game.quest.enums.QuestState;
import emu.grasscutter.server.packet.send.*;
import emu.grasscutter.utils.Position;
import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
import jdk.jshell.spi.ExecutionControl;
import lombok.Getter;

public class QuestManager extends BasePlayerManager {
	@Getter private final Player player;
    @Getter private Map<Integer,Integer> questGlobalVariables;

    @Getter private final Int2ObjectMap<GameMainQuest> mainQuests;
    @Getter private List<GameQuest> addToQuestListUpdateNotify;
    /*
        On SetPlayerBornDataReq, the server sends FinishedParentQuestNotify, with this exact
        parentQuestList. Captured on Game version 2.7
        Note: quest 40063 is already set to finished, with childQuest 4006406's state set to 3
    */

    private static Set<Integer> newPlayerMainQuests = Set.of(303,318,348,349,350,351,416,500,
        501,502,503,504,505,506,507,508,509,20000,20507,20509,21004,21005,21010,21011,21016,21017,
        21020,21021,21025,40063,70121,70124,70511,71010,71012,71013,71015,71016,71017,71555);

    /*
        On SetPlayerBornDataReq, the server sends ServerCondMeetQuestListUpdateNotify, with this exact
        addQuestIdList. Captured on Game version 2.7
        Total of 161...
     */
    /*
    private static Set<Integer> newPlayerServerCondMeetQuestListUpdateNotify = Set.of(3100101, 7104405, 2201601,
        7100801, 1907002, 7293301, 7193801, 7293401, 7193901, 7091001, 7190501, 7090901, 7190401, 7090801, 7190301,
        7195301, 7294801, 7195201, 7293001, 7094001, 7193501, 7293501, 7194001, 7293701, 7194201, 7194301, 7293801,
        7194901, 7194101, 7195001, 7294501, 7294101, 7194601, 7294301, 7194801, 7091301, 7290301, 2102401, 7216801,
        7190201, 7090701, 7093801, 7193301, 7292801, 7227828, 7093901, 7193401, 7292901, 7093701, 7193201, 7292701,
        7082402, 7093601, 7292601, 7193101, 2102301, 7093501, 7292501, 7193001, 7093401, 7292401, 7192901, 7093301,
        7292301, 7192801, 7294201, 7194701, 2100301, 7093201, 7212402, 7292201, 7192701, 7280001, 7293901, 7194401,
        7093101, 7212302, 7292101, 7192601, 7093001, 7292001, 7192501, 7216001, 7195101, 7294601, 2100900, 7092901,
        7291901, 7192401, 7092801, 7291801, 7192301, 2101501, 7092701, 7291701, 7192201, 7106401, 2100716, 7091801,
        7290801, 7191301, 7293201, 7193701, 7094201, 7294001, 7194501, 2102290, 7227829, 7193601, 7094101, 7091401,
        7290401, 7190901, 7106605, 7291601, 7192101, 7092601, 7291501, 7192001, 7092501, 7291401, 7191901, 7092401,
        7291301, 7191801, 7092301, 7211402, 7291201, 7191701, 7092201, 7291101, 7191601, 7092101, 7291001, 7191501,
        7092001, 7290901, 7191401, 7091901, 7290701, 7191201, 7091701, 7290601, 7191101, 7091601, 7290501, 7191001,
        7091501, 7290201, 7190701, 7091201, 7190601, 7091101, 7190101, 7090601, 7090501, 7090401, 7010701, 7090301,
        7090201, 7010103, 7090101
        );

    */
	public QuestManager(Player player) {
        super(player);
		this.player = player;
        this.questGlobalVariables = player.getQuestGlobalVariables();
		this.mainQuests = new Int2ObjectOpenHashMap<>();
        this.addToQuestListUpdateNotify = new ArrayList<>();
	}

    public void onNewPlayerCreate() {

        List<GameMainQuest> newQuests = this.addMultMainQuests(newPlayerMainQuests);
        //getPlayer().sendPacket(new PacketServerCondMeetQuestListUpdateNotify(newPlayerServerCondMeetQuestListUpdateNotify));
        getPlayer().sendPacket(new PacketFinishedParentQuestUpdateNotify(newQuests));


    }

    public void onLogin() {

        List<GameMainQuest> activeQuests = getActiveMainQuests();
        for(GameMainQuest quest : activeQuests) {
            List<Position> rewindPos = quest.rewind(); // <pos, rotation>
            if(rewindPos != null) {
                getPlayer().getPosition().set(rewindPos.get(0));
                getPlayer().getRotation().set(rewindPos.get(1));
            }
        }
    }

    private List<GameMainQuest> addMultMainQuests(Set<Integer> mainQuestIds) {
        List<GameMainQuest> newQuests = new ArrayList<>();
        for(Integer id : mainQuestIds) {
            getMainQuests().put(id.intValue(),new GameMainQuest(this.player, id));
            getMainQuestById(id).save();
            newQuests.add(getMainQuestById(id));
        }
        return newQuests;
    }

    /*
        Looking through mainQuests 72201-72208 and 72174, we can infer that a questGlobalVar's default value is 0
    */
    public Integer getQuestGlobalVarValue(Integer variable) {
        return this.questGlobalVariables.getOrDefault(variable,0);
    }

    public void setQuestGlobalVarValue(Integer variable, Integer value) {
        Integer previousValue = this.questGlobalVariables.put(variable,value);
        Grasscutter.getLogger().debug("Changed questGlobalVar {} value from {} to {}", variable, previousValue==null ? 0: previousValue, value);
    }
    public void incQuestGlobalVarValue(Integer variable, Integer inc) {
        //
        Integer previousValue = this.questGlobalVariables.getOrDefault(variable,0);
        this.questGlobalVariables.put(variable,previousValue + inc);
        Grasscutter.getLogger().debug("Incremented questGlobalVar {} value from {} to {}", variable, previousValue, previousValue + inc);
    }
    //In MainQuest 998, dec is passed as a positive integer
    public void decQuestGlobalVarValue(Integer variable, Integer dec) {
        //
        Integer previousValue = this.questGlobalVariables.getOrDefault(variable,0);
        this.questGlobalVariables.put(variable,previousValue - dec);
        Grasscutter.getLogger().debug("Decremented questGlobalVar {} value from {} to {}", variable, previousValue, previousValue - dec);
    }

	public GameMainQuest getMainQuestById(int mainQuestId) {
		return getMainQuests().get(mainQuestId);
	}

    public GameQuest getQuestById(int questId) {
        QuestData questConfig = GameData.getQuestDataMap().get(questId);
        if (questConfig == null) {
            return null;
        }

		GameMainQuest mainQuest = getMainQuests().get(questConfig.getMainId());

        if (mainQuest == null) {
            return null;
        }

        return mainQuest.getChildQuests().get(questId);
    }

	public void forEachQuest(Consumer<GameQuest> callback) {
		for (GameMainQuest mainQuest : getMainQuests().values()) {
			for (GameQuest quest : mainQuest.getChildQuests().values()) {
				callback.accept(quest);
			}
		}
	}

	public void forEachMainQuest(Consumer<GameMainQuest> callback) {
		for (GameMainQuest mainQuest : getMainQuests().values()) {
			callback.accept(mainQuest);
		}
	}

	// TODO
	public void forEachActiveQuest(Consumer<GameQuest> callback) {
		for (GameMainQuest mainQuest : getMainQuests().values()) {
			for (GameQuest quest : mainQuest.getChildQuests().values()) {
				if (quest.getState() != QuestState.QUEST_STATE_FINISHED) {
					callback.accept(quest);
				}
			}
		}
	}

	public GameMainQuest addMainQuest(QuestData questConfig) {
		GameMainQuest mainQuest = new GameMainQuest(getPlayer(), questConfig.getMainId());
		getMainQuests().put(mainQuest.getParentQuestId(), mainQuest);

        getPlayer().sendPacket(new PacketFinishedParentQuestUpdateNotify(mainQuest));

        return mainQuest;
    }

    public GameQuest addQuest(int questId) {
        QuestData questConfig = GameData.getQuestDataMap().get(questId);
        if (questConfig == null) {
            return null;
        }

        // Main quest
        GameMainQuest mainQuest = this.getMainQuestById(questConfig.getMainId());

        // Create main quest if it doesnt exist
        if (mainQuest == null) {
            mainQuest = addMainQuest(questConfig);
        }

        // Sub quest
        GameQuest quest = mainQuest.getChildQuestById(questId);

		// Forcefully start
		quest.start();

        // Save main quest
        mainQuest.save();

		// Send packet
		getPlayer().sendPacket(new PacketQuestListUpdateNotify(mainQuest.getChildQuests().values().stream()
            .filter(p -> p.getState() != QuestState.QUEST_STATE_UNSTARTED)
            .toList()));

        return quest;
    }
    public void startMainQuest(int mainQuestId) {
        var mainQuestData = GameData.getMainQuestDataMap().get(mainQuestId);

        if (mainQuestData == null) {
            return;
        }

        Arrays.stream(mainQuestData.getSubQuests())
            .min(Comparator.comparingInt(MainQuestData.SubQuestData::getOrder))
            .map(MainQuestData.SubQuestData::getSubId)
            .ifPresent(this::addQuest);
    }
    public void triggerEvent(QuestTrigger condType, int... params) {
        triggerEvent(condType, "", params);
    }

    //TODO
	public void triggerEvent(QuestTrigger condType, String paramStr, int... params) {
        Grasscutter.getLogger().debug("Trigger Event {}, {}, {}", condType, paramStr, params);
        List<GameMainQuest> checkMainQuests = this.getMainQuests().values().stream()
            .filter(i -> i.getState() != ParentQuestState.PARENT_QUEST_STATE_FINISHED)
            .toList();
        switch(condType){
            //accept Conds
            case QUEST_COND_STATE_EQUAL:
            case QUEST_COND_STATE_NOT_EQUAL:
            case QUEST_COND_COMPLETE_TALK:
            case QUEST_COND_LUA_NOTIFY:
            case QUEST_COND_QUEST_VAR_EQUAL:
            case QUEST_COND_QUEST_VAR_GREATER:
            case QUEST_COND_QUEST_VAR_LESS:
            case QUEST_COND_PLAYER_LEVEL_EQUAL_GREATER:
            case QUEST_COND_QUEST_GLOBAL_VAR_EQUAL:
            case QUEST_COND_QUEST_GLOBAL_VAR_GREATER:
            case QUEST_COND_QUEST_GLOBAL_VAR_LESS:
                for (GameMainQuest mainquest : checkMainQuests) {
                    mainquest.tryAcceptSubQuests(condType, paramStr, params);
                }
                break;

            //fail Conds
            case QUEST_CONTENT_NOT_FINISH_PLOT:
                for (GameMainQuest mainquest : checkMainQuests) {
                    mainquest.tryFailSubQuests(condType, paramStr, params);
                }
                break;
            //finish Conds
            case QUEST_CONTENT_COMPLETE_TALK:
            case QUEST_CONTENT_FINISH_PLOT:
            case QUEST_CONTENT_COMPLETE_ANY_TALK:
            case QUEST_CONTENT_LUA_NOTIFY:
            case QUEST_CONTENT_QUEST_VAR_EQUAL:
            case QUEST_CONTENT_QUEST_VAR_GREATER:
            case QUEST_CONTENT_QUEST_VAR_LESS:
            case QUEST_CONTENT_ENTER_DUNGEON:
            case QUEST_CONTENT_ENTER_ROOM:
            case QUEST_CONTENT_INTERACT_GADGET:
            case QUEST_CONTENT_TRIGGER_FIRE:
            case QUEST_CONTENT_UNLOCK_TRANS_POINT:
                for (GameMainQuest mainQuest : checkMainQuests) {
                    mainQuest.tryFinishSubQuests(condType, paramStr, params);
                }
                break;

            //finish Or Fail Conds
            case QUEST_CONTENT_GAME_TIME_TICK:
            case QUEST_CONTENT_QUEST_STATE_EQUAL:
            case QUEST_CONTENT_ADD_QUEST_PROGRESS:
            case QUEST_CONTENT_LEAVE_SCENE:
                for (GameMainQuest mainQuest : checkMainQuests) {
                    mainQuest.tryFailSubQuests(condType, paramStr, params);
                    mainQuest.tryFinishSubQuests(condType, paramStr, params);
                }
                break;
            //QUEST_EXEC are handled directly by each subQuest

            //Unused
            case QUEST_CONTENT_QUEST_STATE_NOT_EQUAL:
            case QUEST_COND_PLAYER_CHOOSE_MALE:
            default:
                Grasscutter.getLogger().error("Unhandled QuestTrigger {}", condType);
        }
        if(this.addToQuestListUpdateNotify.size() != 0){
            this.getPlayer().getSession().send(new PacketQuestListUpdateNotify(this.addToQuestListUpdateNotify));
            this.addToQuestListUpdateNotify.clear();
        }

	}

    public List<QuestGroupSuite> getSceneGroupSuite(int sceneId) {
        return getMainQuests().values().stream()
            .filter(i -> i.getState() != ParentQuestState.PARENT_QUEST_STATE_FINISHED)
            .map(GameMainQuest::getQuestGroupSuites)
            .filter(Objects::nonNull)
            .flatMap(Collection::stream)
            .filter(i -> i.getScene() == sceneId)
            .toList();
    }
    public void loadFromDatabase() {
        List<GameMainQuest> quests = DatabaseHelper.getAllQuests(getPlayer());

        for (GameMainQuest mainQuest : quests) {
            mainQuest.setOwner(this.getPlayer());

			for (GameQuest quest : mainQuest.getChildQuests().values()) {
				quest.setMainQuest(mainQuest);
				quest.setConfig(GameData.getQuestDataMap().get(quest.getSubQuestId()));
			}

			this.getMainQuests().put(mainQuest.getParentQuestId(), mainQuest);
		}
	}

    public List<GameMainQuest> getActiveMainQuests() {
        return getMainQuests().values().stream().filter(p -> !p.isFinished()).toList();
    }
}