Initial project setup for task-inventory

Node.js + Express 5 backend with flat NDJSON key-value store (borrowed from
electronics-inventory). Sequential integer IDs per namespace. Vanilla JS SPA
with filters for status, priority, and tags.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
2026-05-17 18:05:30 +00:00
commit 1100720b03
13 changed files with 1773 additions and 0 deletions

267
public/app.mjs Normal file
View File

@@ -0,0 +1,267 @@
import * as api from './lib/api.mjs';
import { qs, clone, set_text, show, hide } from './lib/dom.mjs';
// ---------------------------------------------------------------------------
// State
// ---------------------------------------------------------------------------
class App_State {
constructor() {
this.tasks = [];
this.filter_status = 'open';
this.filter_priority = '';
this.filter_tag = '';
this.search = '';
}
}
const state = new App_State();
// ---------------------------------------------------------------------------
// Helpers
// ---------------------------------------------------------------------------
function filtered_tasks() {
return state.tasks.filter(t => {
if (state.filter_status && t.status !== state.filter_status) { return false; }
if (state.filter_priority && t.priority !== state.filter_priority) { return false; }
if (state.filter_tag && !t.tags.includes(state.filter_tag)) { return false; }
if (state.search) {
const q = state.search.toLowerCase();
if (!t.title.toLowerCase().includes(q) && !t.body.toLowerCase().includes(q)) { return false; }
}
return true;
});
}
function all_tags() {
const tags = new Set();
for (const t of state.tasks) {
for (const tag of t.tags) { tags.add(tag); }
}
return [...tags].sort();
}
// ---------------------------------------------------------------------------
// Task dialog
// ---------------------------------------------------------------------------
class Task_Dialog {
constructor() {
const el = clone('t-task-dialog');
document.body.appendChild(el);
this.dialog = el;
this.form = el.querySelector('form');
this.on_save = null;
el.querySelector('.btn-cancel').addEventListener('click', () => el.close());
this.form.addEventListener('submit', (e) => {
e.preventDefault();
if (this.on_save) { this.on_save(this._read_form()); }
el.close();
});
}
_read_form() {
const fd = new FormData(this.form);
const tags_raw = fd.get('tags').trim();
return {
title: fd.get('title').trim(),
body: fd.get('body').trim(),
status: fd.get('status'),
priority: fd.get('priority'),
tags: tags_raw ? tags_raw.split(',').map(s => s.trim()).filter(Boolean) : [],
};
}
open(title_text, initial = {}, on_save) {
set_text(this.dialog, '.dialog-title', title_text);
this.form.elements['title'].value = initial.title ?? '';
this.form.elements['body'].value = initial.body ?? '';
this.form.elements['status'].value = initial.status ?? 'open';
this.form.elements['priority'].value = initial.priority ?? 'normal';
this.form.elements['tags'].value = (initial.tags ?? []).join(', ');
this.on_save = on_save;
this.dialog.showModal();
}
}
const task_dialog = new Task_Dialog();
// ---------------------------------------------------------------------------
// Render
// ---------------------------------------------------------------------------
function render_tasks(container) {
container.innerHTML = '';
// Toolbar
const toolbar = document.createElement('div');
toolbar.className = 'toolbar';
toolbar.innerHTML = '<h2>Tasks</h2>';
const add_btn = document.createElement('button');
add_btn.className = 'btn-primary';
add_btn.textContent = '+ New task';
add_btn.addEventListener('click', () => open_add_dialog());
toolbar.appendChild(add_btn);
container.appendChild(toolbar);
// Filter bar
const filter_bar = document.createElement('div');
filter_bar.className = 'filter-bar';
const status_sel = document.createElement('select');
for (const [val, label] of [['', 'All statuses'], ['open', 'Open'], ['deferred', 'Deferred'], ['done', 'Done'], ['cancelled', 'Cancelled']]) {
const opt = document.createElement('option');
opt.value = val; opt.textContent = label;
if (val === state.filter_status) { opt.selected = true; }
status_sel.appendChild(opt);
}
status_sel.addEventListener('change', () => { state.filter_status = status_sel.value; render(); });
filter_bar.appendChild(status_sel);
const priority_sel = document.createElement('select');
for (const [val, label] of [['', 'All priorities'], ['high', 'High'], ['normal', 'Normal'], ['low', 'Low']]) {
const opt = document.createElement('option');
opt.value = val; opt.textContent = label;
if (val === state.filter_priority) { opt.selected = true; }
priority_sel.appendChild(opt);
}
priority_sel.addEventListener('change', () => { state.filter_priority = priority_sel.value; render(); });
filter_bar.appendChild(priority_sel);
const tag_sel = document.createElement('select');
const all_opt = document.createElement('option');
all_opt.value = ''; all_opt.textContent = 'All tags';
tag_sel.appendChild(all_opt);
for (const tag of all_tags()) {
const opt = document.createElement('option');
opt.value = tag; opt.textContent = tag;
if (tag === state.filter_tag) { opt.selected = true; }
tag_sel.appendChild(opt);
}
tag_sel.addEventListener('change', () => { state.filter_tag = tag_sel.value; render(); });
filter_bar.appendChild(tag_sel);
const search_input = document.createElement('input');
search_input.type = 'text';
search_input.placeholder = 'Search…';
search_input.value = state.search;
search_input.addEventListener('input', () => { state.search = search_input.value; render(); });
filter_bar.appendChild(search_input);
container.appendChild(filter_bar);
// Task list
const tasks = filtered_tasks();
const list = document.createElement('div');
list.className = 'task-list';
if (tasks.length === 0) {
const empty = document.createElement('div');
empty.className = 'empty-state';
empty.textContent = 'No tasks.';
list.appendChild(empty);
}
for (const task of tasks) {
const row = clone('t-task-row');
row.dataset.priority = task.priority;
row.dataset.status = task.status;
set_text(row, '.task-id', `#${task.id}`);
const status_el = row.querySelector('.task-status');
status_el.textContent = task.status;
status_el.dataset.val = task.status;
const priority_el = row.querySelector('.task-priority');
priority_el.textContent = task.priority;
priority_el.dataset.val = task.priority;
set_text(row, '.task-title', task.title);
const tags_el = row.querySelector('.task-tags');
for (const tag of task.tags) {
const span = document.createElement('span');
span.className = 'tag';
span.textContent = tag;
tags_el.appendChild(span);
}
row.querySelector('.btn-edit').addEventListener('click', () => open_edit_dialog(task));
row.querySelector('.btn-delete').addEventListener('click', () => confirm_delete(task));
list.appendChild(row);
}
container.appendChild(list);
}
function render() {
const main = document.getElementById('main');
render_tasks(main);
}
// ---------------------------------------------------------------------------
// Actions
// ---------------------------------------------------------------------------
function open_add_dialog() {
task_dialog.open('New task', {}, async (data) => {
try {
const { task } = await api.create_task(data);
state.tasks.unshift(task);
render();
} catch (err) {
alert(err.message);
}
});
}
function open_edit_dialog(task) {
task_dialog.open('Edit task', task, async (data) => {
try {
const { task: updated } = await api.update_task(task.id, data);
const idx = state.tasks.findIndex(t => t.id === task.id);
if (idx !== -1) { state.tasks[idx] = updated; }
render();
} catch (err) {
alert(err.message);
}
});
}
function confirm_delete(task) {
if (!confirm(`Delete task #${task.id}: "${task.title}"?`)) { return; }
api.delete_task(task.id).then(() => {
state.tasks = state.tasks.filter(t => t.id !== task.id);
render();
}).catch(err => alert(err.message));
}
// ---------------------------------------------------------------------------
// Init
// ---------------------------------------------------------------------------
async function init() {
// Inject templates
const tmpl_res = await fetch('/templates.html');
const tmpl_html = await tmpl_res.text();
const tmpl_container = document.createElement('div');
tmpl_container.innerHTML = tmpl_html;
for (const tmpl of tmpl_container.querySelectorAll('template')) {
document.body.appendChild(tmpl);
}
// Load data
const { tasks } = await api.get_tasks();
state.tasks = tasks;
render();
}
init().catch(err => {
console.error('Init failed:', err);
document.getElementById('main').textContent = 'Failed to load: ' + err.message;
});

19
public/index.html Normal file
View File

@@ -0,0 +1,19 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Task Inventory</title>
<link rel="stylesheet" href="/style.css">
</head>
<body>
<header>
<h1>Task Inventory</h1>
<nav>
<button data-nav="tasks" class="nav-btn active">Tasks</button>
</nav>
</header>
<main id="main"></main>
<script type="module" src="/app.mjs"></script>
</body>
</html>

16
public/lib/api.mjs Normal file
View File

@@ -0,0 +1,16 @@
async function req(method, path, body) {
const opts = { method, headers: {} };
if (body !== undefined) {
opts.headers['Content-Type'] = 'application/json';
opts.body = JSON.stringify(body);
}
const res = await fetch(path, opts);
const data = await res.json();
if (!data.ok) { throw new Error(data.error ?? 'Request failed'); }
return data;
}
export const get_tasks = () => req('GET', '/api/tasks');
export const create_task = (body) => req('POST', '/api/tasks', body);
export const update_task = (id, body) => req('PUT', `/api/tasks/${id}`, body);
export const delete_task = (id) => req('DELETE', `/api/tasks/${id}`);

16
public/lib/dom.mjs Normal file
View File

@@ -0,0 +1,16 @@
export function qs(scope, selector) {
if (typeof scope === 'string') { return document.querySelector(scope); }
return scope.querySelector(selector);
}
export function clone(template_id) {
return document.getElementById(template_id).content.cloneNode(true).firstElementChild;
}
export function set_text(el, selector, text) {
const target = typeof selector === 'string' ? el.querySelector(selector) : selector;
target.textContent = text;
}
export function show(el) { el.hidden = false; }
export function hide(el) { el.hidden = true; }

204
public/style.css Normal file
View File

@@ -0,0 +1,204 @@
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
font-family: system-ui, sans-serif;
font-size: 14px;
background: #1a1a1a;
color: #e0e0e0;
min-height: 100vh;
}
header {
display: flex;
align-items: center;
gap: 1.5rem;
padding: 0.75rem 1.25rem;
background: #242424;
border-bottom: 1px solid #333;
}
header h1 {
font-size: 1rem;
font-weight: 600;
color: #fff;
}
nav { display: flex; gap: 0.5rem; }
.nav-btn {
padding: 0.3rem 0.75rem;
border: 1px solid #444;
border-radius: 4px;
background: transparent;
color: #aaa;
cursor: pointer;
font-size: 13px;
}
.nav-btn.active, .nav-btn:hover {
background: #333;
color: #fff;
border-color: #555;
}
main { padding: 1.25rem; }
/* Toolbar */
.toolbar {
display: flex;
align-items: center;
gap: 0.75rem;
margin-bottom: 1rem;
}
.toolbar h2 { font-size: 1rem; flex: 1; }
/* Filter bar */
.filter-bar {
display: flex;
gap: 0.5rem;
margin-bottom: 0.75rem;
flex-wrap: wrap;
}
.filter-bar select, .filter-bar input {
padding: 0.3rem 0.5rem;
background: #2a2a2a;
border: 1px solid #444;
border-radius: 4px;
color: #e0e0e0;
font-size: 13px;
}
/* Task list */
.task-list { display: flex; flex-direction: column; gap: 1px; }
.task-row {
display: grid;
grid-template-columns: 2.5rem 5rem 4.5rem 1fr auto auto;
align-items: center;
gap: 0.5rem;
padding: 0.5rem 0.75rem;
background: #242424;
border-radius: 4px;
border-left: 3px solid transparent;
}
.task-row[data-priority='high'] { border-left-color: #e05555; }
.task-row[data-priority='normal'] { border-left-color: #5588e0; }
.task-row[data-priority='low'] { border-left-color: #555; }
.task-row[data-status='done'] { opacity: 0.5; }
.task-row[data-status='cancelled'] { opacity: 0.4; text-decoration: line-through; }
.task-id { color: #666; font-size: 12px; }
.task-title { font-weight: 500; }
.task-status, .task-priority {
font-size: 11px;
padding: 0.15rem 0.4rem;
border-radius: 3px;
text-align: center;
text-transform: uppercase;
letter-spacing: 0.03em;
}
.task-status[data-val='open'] { background: #1e3a5f; color: #6ab0f5; }
.task-status[data-val='done'] { background: #1a3a1a; color: #6ad06a; }
.task-status[data-val='cancelled'] { background: #2a1a1a; color: #c06060; }
.task-status[data-val='deferred'] { background: #2a2a1a; color: #c0b060; }
.task-priority[data-val='high'] { background: #3a1a1a; color: #e08080; }
.task-priority[data-val='normal'] { background: transparent; color: #777; }
.task-priority[data-val='low'] { background: transparent; color: #555; }
.task-tags { display: flex; gap: 0.25rem; flex-wrap: wrap; }
.tag {
font-size: 11px;
padding: 0.1rem 0.35rem;
background: #2a2a3a;
border-radius: 3px;
color: #8899cc;
}
.task-actions { display: flex; gap: 0.4rem; }
/* Buttons */
button {
cursor: pointer;
border: none;
border-radius: 4px;
font-size: 13px;
padding: 0.3rem 0.7rem;
background: #333;
color: #ccc;
}
button:hover { background: #444; color: #fff; }
.btn-primary {
background: #2a4a7a;
color: #8bb8f0;
}
.btn-primary:hover { background: #335a90; color: #c0d8ff; }
.btn-danger { background: #4a1a1a; color: #e08080; }
.btn-danger:hover { background: #5a2020; color: #ffaaaa; }
.btn-edit { font-size: 12px; padding: 0.2rem 0.5rem; }
.btn-delete { font-size: 12px; padding: 0.2rem 0.5rem; }
/* Dialog */
dialog {
background: #242424;
border: 1px solid #444;
border-radius: 8px;
color: #e0e0e0;
padding: 1.5rem;
width: 480px;
max-width: 95vw;
}
dialog::backdrop { background: rgba(0,0,0,0.6); }
dialog h2 { margin-bottom: 1rem; font-size: 1rem; }
dialog label {
display: flex;
flex-direction: column;
gap: 0.3rem;
margin-bottom: 0.75rem;
font-size: 12px;
color: #999;
}
dialog input, dialog textarea, dialog select {
padding: 0.4rem 0.6rem;
background: #1a1a1a;
border: 1px solid #444;
border-radius: 4px;
color: #e0e0e0;
font-size: 13px;
font-family: inherit;
resize: vertical;
}
dialog input:focus, dialog textarea:focus, dialog select:focus {
outline: none;
border-color: #5588e0;
}
.dialog-buttons {
display: flex;
gap: 0.5rem;
justify-content: flex-end;
margin-top: 1rem;
}
.empty-state {
color: #555;
padding: 2rem;
text-align: center;
}

51
public/templates.html Normal file
View File

@@ -0,0 +1,51 @@
<!-- Task list item -->
<template id="t-task-row">
<div class="task-row">
<span class="task-id"></span>
<span class="task-status"></span>
<span class="task-priority"></span>
<span class="task-title"></span>
<span class="task-tags"></span>
<div class="task-actions">
<button class="btn-edit">Edit</button>
<button class="btn-delete">Delete</button>
</div>
</div>
</template>
<!-- Task form dialog -->
<template id="t-task-dialog">
<dialog class="task-dialog">
<form method="dialog">
<h2 class="dialog-title"></h2>
<label>Title
<input name="title" type="text" required autocomplete="off">
</label>
<label>Body
<textarea name="body" rows="4"></textarea>
</label>
<label>Status
<select name="status">
<option value="open">Open</option>
<option value="deferred">Deferred</option>
<option value="done">Done</option>
<option value="cancelled">Cancelled</option>
</select>
</label>
<label>Priority
<select name="priority">
<option value="high">High</option>
<option value="normal" selected>Normal</option>
<option value="low">Low</option>
</select>
</label>
<label>Tags (comma-separated)
<input name="tags" type="text" autocomplete="off">
</label>
<div class="dialog-buttons">
<button type="submit" class="btn-save">Save</button>
<button type="button" class="btn-cancel">Cancel</button>
</div>
</form>
</dialog>
</template>