import { Router } from 'express';
import SQL from 'sql-template-strings';
import avatar from '../avatar';
import {config as socialLoginConfig} from "../social";
import {buildDict, now, shuffle, handleErrorAsync} from "../../src/helpers";
import locales from '../../src/locales';
import {calculateStats, statsFile} from '../../src/stats';
import fs from 'fs';

const router = Router();

router.get('/admin/list', handleErrorAsync(async (req, res) => {
    const admins = await req.db.all(SQL`
        SELECT u.username, p.teamName, p.locale, u.id, u.email, u.avatarSource
        FROM users u
        LEFT JOIN profiles p ON p.userId = u.id
        WHERE p.teamName IS NOT NULL AND p.teamName != ''
        ORDER BY RANDOM()
    `);

    const adminsGroupped = buildDict(function*() {
        yield [req.config.locale, []];
        for (let [locale, , , published] of locales) {
            if (locale !== req.config.locale && published) {
                yield [locale, []];
            }
        }
        yield ['', []];
    });
    for (let admin of admins) {
        admin.avatar = await avatar(req.db, admin);
        delete admin.id;
        delete admin.email;

        if (adminsGroupped[admin.locale] !== undefined) {
            adminsGroupped[admin.locale].push(admin);
        } else {
            adminsGroupped[''].push(admin);
        }
    }

    return res.json(adminsGroupped);
}));

router.get('/admin/list/footer', handleErrorAsync(async (req, res) => {
    const fromDb = await req.db.all(SQL`
        SELECT u.username, p.footerName, p.footerAreas, p.locale
        FROM users u
        LEFT JOIN profiles p ON p.userId = u.id
        WHERE p.locale = ${req.config.locale}
          AND p.footerName IS NOT NULL AND p.footerName != ''
          AND p.footerAreas IS NOT NULL AND p.footerAreas != ''
    `);

    const fromConfig = req.config.contact.authors || [];

    return res.json(shuffle([...fromDb, ...fromConfig]));
}));

router.get('/admin/users', handleErrorAsync(async (req, res) => {
    if (!req.isGranted('users')) {
        return res.status(401).json({error: 'Unauthorised'});
    }

    return res.json({});

    const users = await req.db.all(SQL`
        SELECT u.id, u.username, u.email, u.roles, u.avatarSource, p.locale
        FROM users u
        LEFT JOIN profiles p ON p.userId = u.id
        ORDER BY u.id DESC
    `);

    const authenticators = await req.db.all(SQL`
        SELECT userId, type FROM authenticators
        WHERE type IN (`.append(Object.keys(socialLoginConfig).map(k => `'${k}'`).join(',')).append(SQL`)
        AND (validUntil IS NULL OR validUntil > ${now()})
    `));

    const groupedUsers = {};
    for (let user of users) {
        if (groupedUsers[user.id] === undefined) {
            groupedUsers[user.id] = {
                ...user,
                locale: undefined,
                profiles: user.locale ? [user.locale] : [],
                avatar: await avatar(req.db, user),
                socialConnections: [],
            }
        } else {
            groupedUsers[user.id].profiles.push(user.locale);
        }
    }

    for (let auth of authenticators) {
        groupedUsers[auth.userId].socialConnections.push(auth.type);
    }

    return res.json(groupedUsers);
}));

router.get('/admin/stats', handleErrorAsync(async (req, res) => {
    if (!req.isGranted('panel')) {
        return res.status(401).json({error: 'Unauthorised'});
    }

    const stats = fs.existsSync(statsFile)
        ? JSON.parse(fs.readFileSync(statsFile))
        : await calculateStats(req.db, req.locales);

    for (let locale in stats.locales) {
        if (stats.locales.hasOwnProperty(locale) && !req.isGranted('panel', locale)) {
            delete stats.locales[locale];
        }
    }

    return res.json(stats);
}));

export default router;