"use strict";

// Modules from file
import shared from "./scripts/shared.js";
import search from "./scripts/search.js";
import { authenticate, urlExists, isF95URL } from "./scripts/network-helper.js";
import fetchLatestHandiworkURLs from "./scripts/fetch-data/fetch-latest.js";
import fetchPlatformData from "./scripts/fetch-data/fetch-platform-data.js";
import getHandiworkInformation from "./scripts/scrape-data/handiwork-parse.js";
import { IBasic } from "./scripts/interfaces.js";

// Classes from file
import Credentials from "./scripts/classes/credentials.js";
import LoginResult from "./scripts/classes/login-result.js";
import UserProfile from "./scripts/classes/mapping/user-profile.js";
import LatestSearchQuery from "./scripts/classes/query/latest-search-query.js";
import HandiworkSearchQuery from "./scripts/classes/query/handiwork-search-query.js";
import HandiWork from "./scripts/classes/handiwork/handiwork.js";
import { UserNotLogged } from "./scripts/classes/errors.js";

//#region Global variables

const USER_NOT_LOGGED = "User not authenticated, unable to continue";

//#endregion

//#region Re-export classes
export { default as Animation } from "./scripts/classes/handiwork/animation.js";
export { default as Asset } from "./scripts/classes/handiwork/asset.js";
export { default as Comic } from "./scripts/classes/handiwork/comic.js";
export { default as Game } from "./scripts/classes/handiwork/game.js";
export { default as Handiwork } from "./scripts/classes/handiwork/handiwork.js";

export { default as PlatformUser } from "./scripts/classes/mapping/platform-user.js";
export { default as Post } from "./scripts/classes/mapping/post.js";
export { default as Thread } from "./scripts/classes/mapping/thread.js";
export { default as UserProfile } from "./scripts/classes/mapping/user-profile.js";

export { default as HandiworkSearchQuery } from "./scripts/classes/query/handiwork-search-query.js";
export { default as LatestSearchQuery } from "./scripts/classes/query/latest-search-query.js";
export { default as ThreadSearchQuery } from "./scripts/classes/query/thread-search-query.js";
//#endregion Re-export classes

//#region Export properties
/**
 * Set the logger level for module debugging.
 */
/* istambul ignore next */
export var loggerLevel = shared.logger.level;
shared.logger.level = "warn"; // By default log only the warn messages

/**
 * Indicates whether a user is logged in to the F95Zone platform or not.
 */
export function isLogged(): boolean { return shared.isLogged; };
//#endregion Export properties

//#region Export methods

/**
 * Log in to the F95Zone platform.
 *
 * This **must** be the first operation performed before accessing any other script functions.
 */
export async function login(username: string, password: string): Promise<LoginResult> {
    // Try to load a previous session
    await shared.session.load();

    // If the session is valid, return
    if (shared.session.isValid(username, password)) {
        shared.logger.info(`Loading previous session for ${username}`);

        // Load platform data
        await fetchPlatformData();

        shared.setIsLogged(true);
        return new LoginResult(true, `${username} already authenticated (session)`);
    }

    // Creating credentials and fetch unique platform token
    shared.logger.trace("Fetching token...");
    const creds = new Credentials(username, password);
    await creds.fetchToken();

    shared.logger.trace(`Authentication for ${username}`);
    const result = await authenticate(creds);
    shared.setIsLogged(result.success);

    if (result.success) {
        // Load platform data
        await fetchPlatformData();

        // Recreate the session, overwriting the old one
        shared.session.create(username, password, creds.token);
        await shared.session.save();

        shared.logger.info("User logged in through the platform");
    } else shared.logger.warn(`Error during authentication: ${result.message}`);

    return result;
};

/**
 * Chek if exists a new version of the handiwork.
 *
 * You **must** be logged in to the portal before calling this method.
 */
export async function checkIfHandiworkHasUpdate(hw: HandiWork): Promise<boolean> {
    // Local variables
    let hasUpdate = false;

    // Check if the user is logged
    if (!shared.isLogged) throw new UserNotLogged(USER_NOT_LOGGED);

    // F95 change URL at every game update,
    // so if the URL is different an update is available
    if (await urlExists(hw.url, true)) {
        // Fetch the online handiwork
        const onlineHw = await getHandiworkFromURL<HandiWork>(hw.url);

        // Compare the versions
        hasUpdate = onlineHw.version?.toUpperCase() !== hw.version?.toUpperCase();
    }

    return hasUpdate;
};

/**
 * Search for one or more handiworks identified by a specific query.
 *
 * You **must** be logged in to the portal before calling this method.
 *
 * @param {HandiworkSearchQuery} query Parameters used for the search.
 * @param {Number} limit Maximum number of results. Default: 10
 */
export async function searchHandiwork<T extends IBasic>(query: HandiworkSearchQuery, limit: number = 10): Promise<T[]> {
    // Check if the user is logged
    if (!shared.isLogged) throw new UserNotLogged(USER_NOT_LOGGED);

    return search<T>(query, limit);
};

/**
 * Given the url, it gets all the information about the handiwork requested.
 *
 * You **must** be logged in to the portal before calling this method.
 */
export async function getHandiworkFromURL<T extends IBasic>(url: string): Promise<T> {
    // Check if the user is logged
    if (!shared.isLogged) throw new UserNotLogged(USER_NOT_LOGGED);

    // Check URL validity
    const exists = await urlExists(url);
    if (!exists) throw new URIError(`${url} is not a valid URL`);
    if (!isF95URL(url)) throw new Error(`${url} is not a valid F95Zone URL`);
    
    // Get game data
    return getHandiworkInformation<T>(url);
};

/**
 * Gets the data of the currently logged in user.
 *
 * You **must** be logged in to the portal before calling this method.
 *
 * @returns {Promise<UserProfile>} Data of the user currently logged in
 */
export async function getUserData(): Promise<UserProfile> {
    // Check if the user is logged
    if (!shared.isLogged) throw new UserNotLogged(USER_NOT_LOGGED);

    // Create and fetch profile data
    const profile = new UserProfile();
    await profile.fetch();
    
    return profile;
};

/**
 * Gets the latest updated games that match the specified parameters.
 *
 * You **must** be logged in to the portal before calling this method.
 *
 * @param {LatestSearchQuery} query Parameters used for the search.
 * @param {Number} limit Maximum number of results. Default: 10
 */
export async function getLatestUpdates<T extends IBasic>(query: LatestSearchQuery, limit: number = 10): Promise<T[]> {
    // Check limit value
    if (limit <= 0) throw new Error("limit must be greater than 0");

    // Check if the user is logged
    if (!shared.isLogged) throw new UserNotLogged(USER_NOT_LOGGED);

    // Fetch the results
    const urls = await fetchLatestHandiworkURLs(query, limit);

    // Get the data from urls
    const promiseList = urls.map((u: string) => getHandiworkInformation<T>(u));
    return Promise.all(promiseList);
};

//#endregion