"use strict";

const sql = require('../services/sql');
const attributeService = require('../services/attributes');
const config = require('../services/config');
const optionService = require('../services/options');
const log = require('../services/log');
const env = require('../services/env');
const utils = require('../services/utils');
const protectedSessionService = require("../services/protected_session");
const packageJson = require('../../package.json');

function index(req, res) {
    const options = optionService.getOptionsMap();

    let view = (!utils.isElectron() && req.cookies['trilium-device'] === 'mobile')
        ? 'mobile'
        : 'desktop';

    const csrfToken = req.csrfToken();
    log.info(`Generated CSRF token ${csrfToken} with secret ${res.getHeader('set-cookie')}`);

    res.render(view, {
        csrfToken: csrfToken,
        themeCssUrl: getThemeCssUrl(options.theme),
        headingStyle: options.headingStyle,
        mainFontSize: parseInt(options.mainFontSize),
        treeFontSize: parseInt(options.treeFontSize),
        detailFontSize: parseInt(options.detailFontSize),
        maxEntityChangeIdAtLoad: sql.getValue("SELECT COALESCE(MAX(id), 0) FROM entity_changes"),
        maxEntityChangeSyncIdAtLoad: sql.getValue("SELECT COALESCE(MAX(id), 0) FROM entity_changes WHERE isSynced = 1"),
        instanceName: config.General ? config.General.instanceName : null,
        appCssNoteIds: getAppCssNoteIds(),
        isDev: env.isDev(),
        isMainWindow: !req.query.extra,
        extraHoistedNoteId: req.query.extraHoistedNoteId,
        isProtectedSessionAvailable: protectedSessionService.isProtectedSessionAvailable(),
        maxContentWidth: parseInt(options.maxContentWidth),
        triliumVersion: packageJson.version
    });
}

function getThemeCssUrl(theme) {
    if (theme === 'light') {
        return false; // light theme is always loaded as baseline
    }

    if (theme === 'dark') {
        return `stylesheets/theme-dark.css`;
    }
    else {
        const themeNote = attributeService.getNoteWithLabel('appTheme', theme);

        if (themeNote) {
            return `api/notes/download/${themeNote.noteId}`;
        }
        else {
            return false; // baseline light theme
        }
    }
}

function getAppCssNoteIds() {
    return attributeService.getNotesWithLabel('appCss').map(note => note.noteId);
}

module.exports = {
    index
};
