package uulm.teamname.marvelous.gamelibrary.ai;

import uulm.teamname.marvelous.gamelibrary.config.CharacterConfig;
import uulm.teamname.marvelous.gamelibrary.config.PartyConfig;
import uulm.teamname.marvelous.gamelibrary.config.ScenarioConfig;
import uulm.teamname.marvelous.gamelibrary.entities.Character;
import uulm.teamname.marvelous.gamelibrary.entities.EntityID;
import uulm.teamname.marvelous.gamelibrary.entities.EntityType;
import uulm.teamname.marvelous.gamelibrary.gamelogic.GameStateView;
import uulm.teamname.marvelous.gamelibrary.requests.Request;
import uulm.teamname.marvelous.gamelibrary.requests.RequestBuilder;
import uulm.teamname.marvelous.gamelibrary.requests.RequestType;

import java.util.ArrayList;

/** Represents an AI instance for calculations. */
class AI {
    /** The {@link GameStateView} the AI is playing on. */
    private final GameStateView state;

    /** The Player the AI is playing for. */
    private final EntityType player;

    /** The config data. */
    private final PartyConfig partyConfig;
    private final CharacterConfig characterConfig;
    private final ScenarioConfig scenarioConfig;

    /** Constructs a new {@link AI} playing the given player based on the given config values. */
    public AI(GameStateView state, EntityType player, PartyConfig partyConfig, CharacterConfig characterConfig, ScenarioConfig scenarioConfig) {
        this.state = state;
        this.player = player;
        this.partyConfig = partyConfig;
        this.characterConfig = characterConfig;
        this.scenarioConfig = scenarioConfig;
    }

    /**
     * Calculates the appropriate actions for a turn of any of the characters the AI is playing for.
     * @param turn The {@link EntityID} that currently has the turn
     * @return A list of {@link Request Requests} with the actions the AI wants to perform
     */
    public ArrayList<Request> performTurn(EntityID turn) {
        System.out.println("[AI] Handling Character " + turn + " for Player " + player + ":");

        ArrayList<Request> result = new ArrayList<>();

        Character character = (Character)state.getEntities().findEntity(turn);

        Board board = Board.generate(state, player);
        Action action = board.analyze(character.getPosition(), player, partyConfig, characterConfig, scenarioConfig);

        switch(action.type) {
            case None -> {
                System.out.println("     Result: doing nothing");
            }
            case Move -> {
                System.out.println("     Result: moving to " + action.target);
                result.add(new RequestBuilder(RequestType.MoveRequest)
                        .withOriginEntity(turn)
                        .withOriginField(character.getPosition())
                        .withTargetField(action.target)
                        .buildCharacterRequest());
            }
            case MeleeAttack -> {
                System.out.println("     Result: melee attacking " + action.targetEntity);
                Character target = (Character)state.getEntities().findEntity(action.targetEntity);
                if(target != null) {
                    result.add(new RequestBuilder(RequestType.MeleeAttackRequest)
                            .withOriginEntity(turn)
                            .withTargetEntity(action.targetEntity)
                            .withOriginField(character.getPosition())
                            .withTargetField(action.target)
                            .withValue(character.meleeDamage)
                            .buildCharacterRequest());
                }
            }
            case RangedAttack -> {
                System.out.println("     Result: ranged attacking " + action.targetEntity);
                Character target = (Character)state.getEntities().findEntity(action.targetEntity);
                if(target != null) {
                    result.add(new RequestBuilder(RequestType.RangedAttackRequest)
                            .withOriginEntity(turn)
                            .withTargetEntity(action.targetEntity)
                            .withOriginField(character.getPosition())
                            .withTargetField(action.target)
                            .withValue(character.rangedDamage)
                            .buildCharacterRequest());
                }
            }
            case UseStone -> {
                switch(action.stone) {
                    case SpaceStone -> {
                        System.out.println("     Result: using space stone to " + action.target);
                        result.add(new RequestBuilder(RequestType.UseInfinityStoneRequest)
                                .withOriginEntity(turn)
                                .withOriginField(character.getPosition())
                                .withTargetField(action.target)
                                .withStoneType(action.stone)
                                .buildCharacterRequest());
                    }
                    case MindStone -> {
                        System.out.println("     Result: using mind stone to " + action.target);
                        result.add(new RequestBuilder(RequestType.UseInfinityStoneRequest)
                                .withOriginEntity(turn)
                                .withOriginField(character.getPosition())
                                .withTargetField(action.target)
                                .withValue(partyConfig.mindStoneDMG)
                                .withStoneType(action.stone)
                                .buildCharacterRequest());
                    }
                    case RealityStone -> {
                        System.out.println("     Result: using reality stone at " + action.target);
                        result.add(new RequestBuilder(RequestType.UseInfinityStoneRequest)
                                .withOriginEntity(turn)
                                .withTargetEntity(action.targetEntity)
                                .withOriginField(character.getPosition())
                                .withTargetField(action.target)
                                .withStoneType(action.stone)
                                .buildCharacterRequest());
                    }
                    case PowerStone -> {
                        System.out.println("     Result: using power stone against " + action.targetEntity);
                        result.add(new RequestBuilder(RequestType.UseInfinityStoneRequest)
                                .withOriginEntity(turn)
                                .withTargetEntity(action.targetEntity)
                                .withOriginField(character.getPosition())
                                .withTargetField(action.target)
                                .withValue(character.rangedDamage * 2)
                                .withStoneType(action.stone)
                                .buildCharacterRequest());
                    }
                    case TimeStone -> {
                        System.out.println("     Result: using time stone");
                        result.add(new RequestBuilder(RequestType.UseInfinityStoneRequest)
                                .withOriginEntity(turn)
                                .withOriginField(character.getPosition())
                                .withStoneType(action.stone)
                                .buildCharacterRequest());
                    }
                    case SoulStone -> {
                        System.out.println("     Result: using soul stone on " + action.targetEntity);
                        result.add(new RequestBuilder(RequestType.UseInfinityStoneRequest)
                                .withOriginEntity(turn)
                                .withTargetEntity(action.targetEntity)
                                .withOriginField(character.getPosition())
                                .withTargetField(action.target)
                                .withStoneType(action.stone)
                                .buildCharacterRequest());
                    }
                }
            }
            case GiveStone -> {
                System.out.println("     Result: giving stone to " + action.targetEntity);
                Character target = (Character)state.getEntities().findEntity(action.targetEntity);
                if(target != null) {
                    result.add(new RequestBuilder(RequestType.ExchangeInfinityStoneRequest)
                            .withOriginEntity(turn)
                            .withTargetEntity(action.targetEntity)
                            .withOriginField(character.getPosition())
                            .withTargetField(action.target)
                            .withStoneType(action.stone)
                            .buildCharacterRequest());
                }
            }
        }

        result.add(new RequestBuilder(RequestType.EndRoundRequest)
                .buildGameRequest());

        return result;
    }
}