3bf965ddef
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- GET /tags returns deduplicated sorted array of all tags across todos - POST /todos/:id/tags attaches a tag to a todo (idempotent, ignores duplicates) - DELETE /todos/:id/tags/:tag removes a specific tag from a todo - Both /todos/:id/tags routes return 404 for non-existent todos
81 lines
1.9 KiB
JavaScript
81 lines
1.9 KiB
JavaScript
const express = require('express');
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const { name, version } = require('./package.json');
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const app = express();
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const PORT = 3000;
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app.use(express.json());
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let todos = [
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{ id: 1, title: 'Buy groceries', done: false, tags: [] },
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{ id: 2, title: 'Walk the dog', done: true, tags: [] },
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{ id: 3, title: 'Read a book', done: false, tags: [] },
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];
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let nextId = 4;
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app.get('/healthz', (req, res) => {
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res.json({ ok: true });
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});
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app.get('/version', (req, res) => {
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res.json({ name, version });
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});
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app.get('/todos', (req, res) => {
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const { tag } = req.query;
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if (tag !== undefined) {
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return res.json(todos.filter(t => t.tags.includes(tag)));
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}
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res.json(todos);
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});
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app.post('/todos', (req, res) => {
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const { title, tags } = req.body;
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const todo = { id: nextId++, title, done: false, tags: Array.isArray(tags) ? tags : [] };
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todos.push(todo);
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res.status(201).json(todo);
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});
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app.delete('/todos/:id', (req, res) => {
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const id = parseInt(req.params.id, 10);
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const index = todos.findIndex(t => t.id === id);
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if (index === -1) {
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return res.status(404).end();
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}
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todos.splice(index, 1);
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res.status(204).end();
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});
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app.get('/tags', (req, res) => {
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const tags = [...new Set(todos.flatMap(t => t.tags))].sort();
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res.json(tags);
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});
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app.post('/todos/:id/tags', (req, res) => {
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const id = parseInt(req.params.id, 10);
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const todo = todos.find(t => t.id === id);
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if (!todo) {
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return res.status(404).end();
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}
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const { tag } = req.body;
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if (!todo.tags.includes(tag)) {
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todo.tags.push(tag);
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}
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res.json(todo);
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});
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app.delete('/todos/:id/tags/:tag', (req, res) => {
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const id = parseInt(req.params.id, 10);
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const todo = todos.find(t => t.id === id);
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if (!todo) {
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return res.status(404).end();
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}
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todo.tags = todo.tags.filter(t => t !== req.params.tag);
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res.status(204).end();
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});
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app.listen(PORT, () => {
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console.log(`Server listening on http://localhost:${PORT}`);
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});
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