import { getUserNameById } from "../../helpers.js";
import { state } from "../../store/store.js";
import {
    npcBecky,
    npcs,
    type IEntity,
    type INPC,
    type INPCData,
    type IPlayer,
    type NPC,
    type TFullNPC,
} from "./structures/entities.js";
import { itemShortsword } from "./structures/items.js";
import { Location } from "./structures/locations.js";
import { Race, raceHuman, races, type IRace } from "./structures/races.js";
import type { ILevel } from "./types.js";

const createPlayer = (name: string): IPlayer => ({
    name: name,
    description: "",
    race: Race.HUMAN,
    location: Location.FARLANDS,
    inventory: {
        items: [itemShortsword],
    },
    experience: 0,
    health: 100,
    vitality: 0,
    strength: 0,
    endurance: 0,
    agility: 0,
    dexterity: 0,
    intelligence: 0,
    wisdom: 0,
    stealth: 0,
    charisma: 0,
    lockpicking: 0,
});

const createNpcData = (npc: INPC): INPCData => ({
    id: npc.id,
    health: getMaxHealth(npc),
    dead: false,
});

const existsPlayer = (name: string): boolean => {
    return (
        state.game.players.find(
            (player) => player.name.toLowerCase() === name.toLowerCase(),
        ) !== undefined
    );
};

const existsNpc = (name: string): boolean => {
    return (
        npcs.find((npc) => npc.name.toLowerCase() === name.toLowerCase()) !==
        undefined
    );
};

const existsEntity = (name: string): boolean => {
    return existsPlayer(name) || existsNpc(name);
};

const getPlayer = (userId: string): IPlayer => {
    return getPlayerByName(getUserNameById(userId));
};

const getPlayerByName = (name: string): IPlayer => {
    const player = state.game.players.find((player) => player.name === name);
    if (player) {
        return player;
    }

    const newPlayer = createPlayer(name);
    state.game.players.push(newPlayer);

    return newPlayer;
};

const getEntityByName = (name: string): IPlayer | TFullNPC => {
    if (existsPlayer(name)) {
        return getPlayerByName(name);
    }

    const npc = getNpcByName(name);

    return { ...npc, ...getNpcData(npc.id) };
};

const getNpc = (id: NPC): INPC => {
    const npc = npcs.find((npc) => npc.id === id);

    return npc ? npc : npcBecky;
};

const getNpcByName = (name: string): INPC => {
    const npc = npcs.find((npc) => npc.id === name);

    return npc ? npc : npcBecky;
};

const getNpcData = (id: NPC): INPCData => {
    const npcData = state.game.npcs.find((npcData) => npcData.id === id);
    if (npcData) {
        return npcData;
    }

    const newNpcData = createNpcData(getNpc(id));
    state.game.npcs.push(newNpcData);

    return newNpcData;
};

const getNpcsAtLocation = (id: Location): INPC[] => {
    return npcs.filter((npc) => npc.location === id);
};

const getPlayersAtLocation = (id: Location): IPlayer[] => {
    return state.game.players.filter((player) => player.location === id);
};

const getEntitiesAtLocation = (id: Location): IEntity[] => {
    const npcsAtLocation = getNpcsAtLocation(id);
    const playersAtLocation = getPlayersAtLocation(id);

    return [...npcsAtLocation, ...playersAtLocation];
};

const getRace = (id: Race): IRace => {
    const race = races.find((race) => race.id === id);

    return race ? race : raceHuman;
};

const getLevel = (experience: number): ILevel => {
    let tmpExperience = experience;
    let experienceToNextLevel = 50;
    let level = 0;

    while (tmpExperience >= experienceToNextLevel) {
        level++;
        tmpExperience -= experienceToNextLevel;
        experienceToNextLevel = experienceToNextLevel *= 1.25;
    }

    return {
        level: level,
        totalExperience: Math.floor(experience),
        experienceInLevel: Math.floor(tmpExperience),
        experienceToNextLevel: Math.floor(experienceToNextLevel),
    };
};

const getMaxHealth = (entity: IEntity): number => {
    return entity.vitality * 10;
};

const getHealthPercentage = (entity: IPlayer | INPC): number => {
    if ("health" in entity) {
        return entity.health / getMaxHealth(entity);
    }

    const npcData = getNpcData(entity.id);
    return npcData.health / getMaxHealth(entity);
};

const getSpeed = (entity: IEntity) => {
    return 60 + 3 + Math.sqrt(entity.agility + entity.endurance) / 2;
};

export {
    createPlayer,
    createNpcData,
    existsPlayer,
    existsNpc,
    existsEntity,
    getPlayer,
    getPlayerByName,
    getEntityByName,
    getNpc,
    getNpcByName,
    getNpcData,
    getNpcsAtLocation,
    getPlayersAtLocation,
    getEntitiesAtLocation,
    getRace,
    getLevel,
    getMaxHealth,
    getHealthPercentage,
    getSpeed,
};