import { en } from './locales/en.js';
import { normalizeServer, needsConfirmation } from './server.js';

for (const element of document.querySelectorAll('[data-i18n]')) {
    element.textContent = en[element.dataset.i18n];
}

const form = document.querySelector('#server-form');
const input = document.querySelector('#server-url');
const status = document.querySelector('#connection-status');
const open = document.querySelector('.open-workspace');
const resume = document.querySelector('#resume');
const confirmation = document.querySelector('#switch-confirmation');
let activeServer = null;
let pendingServer = null;
let initialized = false;

function action(name, server) {
    const url = new URL(`/action/${name}`, location.href);
    if (server) {
        url.searchParams.set('server', server);
    }
    if (window.nativeLauncher) {
        window.nativeLauncher.postMessage(url.href);
    } else {
        location.href = url.href;
    }
}

window.updateLauncher = (query) => {
    const state = new URLSearchParams(query);
    const phase = state.get('phase');
    const server = state.get('server');
    if (!initialized) {
        input.value = server;
        initialized = true;
    }
    if (phase === 'connecting' || phase === 'connected') {
        activeServer = server;
    }
    status.textContent =
        en[
            phase === 'connected' && state.get('platform') === 'android'
                ? 'connectedMobile'
                : phase
        ] ?? '';
    status.dataset.state = phase;
    open.disabled = phase === 'connecting';
    open.textContent =
        en[phase === 'connectionError' ? 'retry' : 'openWorkspace'];
    resume.hidden = state.get('ready') !== 'true';
    form.setAttribute('aria-busy', String(phase === 'connecting'));
};

function connect(server) {
    confirmation.hidden = true;
    pendingServer = null;
    action('open', server);
}

form.addEventListener('submit', (event) => {
    event.preventDefault();
    let server;
    try {
        server = normalizeServer(input.value);
    } catch {
        status.textContent = en.invalidServer;
        input.setAttribute('aria-invalid', 'true');
        input.focus();
        return;
    }
    input.removeAttribute('aria-invalid');
    if (needsConfirmation(activeServer, server)) {
        pendingServer = server;
        confirmation.hidden = false;
        document.querySelector('#confirm-switch').focus();
        return;
    }
    connect(server);
});

document.querySelector('#confirm-switch').addEventListener('click', () => {
    if (pendingServer) {
        connect(pendingServer);
    }
});
document.querySelector('#cancel-switch').addEventListener('click', () => {
    confirmation.hidden = true;
    pendingServer = null;
    input.focus();
});
resume.addEventListener('click', () => action('resume'));

document.querySelector('#appearance').addEventListener('change', (event) => {
    document.documentElement.dataset.appearance = event.target.value;
});

if (window.nativeLauncher) {
    action('ready');
}

window.updateAvailable = (available) => {
    document.querySelector('#update-notice').hidden = !available;
};
document
    .querySelector('#update-notice')
    .addEventListener('click', () => action('updates'));