examples/frontend/vanilla/cdn-javascript/index.html at main · junobuild/examples · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <link rel="stylesheet" href="style.css">
    <title>Juno Vanilla Example</title>

    <script type="module">
        import {authSubscribe, initJuno, signIn, signOut} from "https://cdn.jsdelivr.net/npm/@junobuild/core-standalone@latest/+esm";
        import {getDoc, setDoc, listDocs, deleteDoc} from "https://cdn.jsdelivr.net/npm/@junobuild/core-standalone@latest/+esm";
        import {listAssets, uploadFile} from "https://cdn.jsdelivr.net/npm/@junobuild/core-standalone@latest/+esm";
        import { nanoid } from "https://cdn.jsdelivr.net/npm/nanoid@latest/+esm";

        document.addEventListener("DOMContentLoaded", async () => await initJuno({
            satelliteId: "xo2hm-lqaaa-aaaal-ab3oa-cai"
        }), {once: true});

        /**
         * Authentication
         */

        document
            .querySelector("#signin")
            ?.addEventListener("click", signIn, { passive: true });

        document
            .querySelector("#signout")
            ?.addEventListener("click", signOut, { passive: true });

        authSubscribe((user) => {
            console.log("User", user);
        });

        /**
         * Datastore
         * - Set
         * - Get
         * - Delete
         * - List
         */

        let record;
        const key = nanoid();

        const set = async () => {
            record = await setDoc({
                collection: "demo",
                doc: {
                    key,
                    data: {
                        yolo: true,
                        hello: "world",
                    },
                    // This is necessary to update an entry. Juno verify the timestamp when an update is performed to be sure the most recent entry is updated.
                    ...(record !== undefined && {updated_at: record.updated_at}),
                },
            });

            console.log("Set done", record);
        };

        const del = async () => {
            if (record === undefined) {
                return;
            }

            await deleteDoc({
                collection: "demo",
                doc: record,
            });

            record = undefined;

            console.log("Delete done");
        };

        const get = async () => {
            record = await getDoc({
                collection: "demo",
                key,
            });

            console.log("Get done", record);
        }

        const list = async () =>
            console.log("List",
                await listDocs({
                    collection: "demo",
                    filter: {},
                })
            );

        document
            .querySelector("#set")
            ?.addEventListener("click", async () => await set(), { passive: true });
        document
            .querySelector("#read")
            ?.addEventListener("click", get, { passive: true });
        document
            .querySelector("#list")
            ?.addEventListener("click", list, { passive: true });
        document
            .querySelector("#delete")
            ?.addEventListener("click", del, { passive: true });

        /**
         * Storage
         */

        const listImages = async () =>
            console.log("List",
                await listAssets({
                    collection: "images",
                    filter: {},
                })
            );

        const upload = async () => {
            const input = document.querySelector("#file");

            if (!input) {
                return;
            }

            const data = input.files?.[0];

            if (!data) {
                return;
            }

            const {downloadUrl} = await uploadFile({
                data,
                collection: "images"
            });

            const div = document.querySelector("#result");

            if (!div) {
                return;
            }

            const img = document.createElement('img');
            img.src = downloadUrl;

            div.append(img);
        };

        document
            .querySelector("#upload")
            ?.addEventListener("click", upload, { passive: true });

        document
            .querySelector("#list_assets")
            ?.addEventListener("click", listImages, { passive: true });
    </script>
</head>
<body>
<div id="app">
    <article>
        <p>The output of most command is printed in the debugger console. Note also that all buttons are always displayed and enabled for simplicity reason.</p>
    </article>
    <hr />
    <button id="signin">Sign in</button>
    <button id="signout">Sign Out</button>
    <hr/>
    <button id="set">Set</button>
    <button id="read">Read</button>
    <button id="list">List</button>
    <button id="delete">Delete</button>
    <hr/>
    <button id="list_assets">List assets</button>
    <hr/>
    <input id="file" type="file">Upload</input>
    <button id="upload">Upload</button>
    <div id="result"></div>
</div>
</body>
</html>