SillyTavern/public/scripts/extensions/caption/index.js

import { getBase64Async } from "../../utils.js";
import { getContext, getApiUrl, doExtrasFetch } from "../../extensions.js";
export { MODULE_NAME };

const MODULE_NAME = 'caption';
const UPDATE_INTERVAL = 1000;

async function moduleWorker() {
    $('#send_picture').toggle(getContext().onlineStatus !== 'no_connection');
}

async function setImageIcon() {
    try {
        const sendButton = $('#send_picture .extensionsMenuExtensionButton');
        sendButton.addClass('fa-image');
        sendButton.removeClass('fa-hourglass-half');
    }
    catch (error) {
        console.log(error);
    }
}

async function setSpinnerIcon() {
    try {
        const sendButton = $('#send_picture .extensionsMenuExtensionButton');
        sendButton.removeClass('fa-image');
        sendButton.addClass('fa-hourglass-half');
    }
    catch (error) {
        console.log(error);
    }
}

async function sendCaptionedMessage(caption, image) {
    const context = getContext();
    const messageText = `[${context.name1} sends ${context.name2 ?? ''} a picture that contains: ${caption}]`;
    const message = {
        name: context.name1,
        is_user: true,
        is_name: true,
        send_date: Date.now(),
        mes: messageText,
        extra: {
            image: image,
            title: caption,
        },
    };
    context.chat.push(message);
    context.addOneMessage(message);
    await context.generate();
}

async function onSelectImage(e) {
    setSpinnerIcon();
    const file = e.target.files[0];

    if (!file) {
        return;
    }

    try {
        const base64Img = await getBase64Async(file);
        const url = new URL(getApiUrl());
        url.pathname = '/api/caption';

        const apiResult = await doExtrasFetch(url, {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json',
                'Bypass-Tunnel-Reminder': 'bypass',
            },
            body: JSON.stringify({ image: base64Img.split(',')[1] })
        });

        if (apiResult.ok) {
            const data = await apiResult.json();
            const caption = data.caption;
            const imageToSave = data.thumbnail ? `data:image/jpeg;base64,${data.thumbnail}` : base64Img;
            await sendCaptionedMessage(caption, imageToSave);
        }
    }
    catch (error) {
        console.log(error);
    }
    finally {
        e.target.form.reset();
        setImageIcon();
    }
}

jQuery(function () {
    function addSendPictureButton() {
        const sendButton = $(`
        <div id="send_picture" class="list-group-item flex-container flexGap5">
            <div class="fa-solid fa-image extensionsMenuExtensionButton"></div>
            Send a picture
        </div>`);

        $('#extensionsMenu').prepend(sendButton);
        $(sendButton).hide();
        $(sendButton).on('click', () => $('#img_file').trigger('click'));
    }
    function addPictureSendForm() {
        const inputHtml = `<input id="img_file" type="file" accept="image/*">`;
        const imgForm = document.createElement('form');
        imgForm.id = 'img_form';
        $(imgForm).append(inputHtml);
        $(imgForm).hide();
        $('#form_sheld').append(imgForm);
        $('#img_file').on('change', onSelectImage);
    }

    addPictureSendForm();
    addSendPictureButton();
    setImageIcon();
    moduleWorker();
    setInterval(moduleWorker, UPDATE_INTERVAL);
});