feat: initial commit

.github/workflows/pr.yml

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+name: Create and test a Docker image
+
+on:
+  pull_request:
+    branches: ['main']
+
+jobs:
+  build-and-test-image:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Start containers
+        run: docker compose up --build --detach
+
+      - name: Run test
+        run: curl -s localhost:3000 | grep "Appvia Todo List"
+
+      - name: Stop containers
+        run: docker compose down

.github/workflows/release.yml

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+name: Create and publish a Docker image
+
+# Configures this workflow to run every time a change is pushed to the branch called `main`, or a version tag is pushed.
+on:
+  push:
+    branches: ['main']
+    tags:
+      - 'v*'
+
+# Defines two custom environment variables for the workflow. These are used for the Container registry domain, and a name for the Docker image that this workflow builds.
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+# There is a single job in this workflow. It's configured to run on the latest available version of Ubuntu.
+jobs:
+  build-and-push-image:
+    runs-on: ubuntu-latest
+    # Sets the permissions granted to the `GITHUB_TOKEN` for the actions in this job.
+    permissions:
+      contents: read
+      packages: write
+      attestations: write
+      id-token: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      # Uses the `docker/login-action` action to log in to the Container registry registry using the account and password that will publish the packages. Once published, the packages are scoped to the account defined here.
+      - name: Log in to the Container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      # This step uses [docker/metadata-action](https://github.com/docker/metadata-action#about) to extract tags and labels that will be applied to the specified image. The `id` "meta" allows the output of this step to be referenced in a subsequent step. The `images` value provides the base name for the tags and labels.
+      - name: Extract metadata (tags, labels) for Docker
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+
+      # This step uses the `docker/build-push-action` action to build the image, based on your repository's `Dockerfile`. If the build succeeds, it pushes the image to GitHub Packages.
+      # It uses the `context` parameter to define the build's context as the set of files located in the specified path.
+      # It uses the `tags` and `labels` parameters to tag and label the image with the output from the "meta" step.
+      - name: Build and push Docker image
+        id: push
+        uses: docker/build-push-action@v6
+        with:
+          context: ./app
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+
+      # This step generates an artifact attestation for the image, which is an unforgeable statement about where and how it was built. It increases supply chain security for people who consume the image.
+      - name: Generate artifact attestation
+        uses: actions/attest-build-provenance@v1
+        with:
+          subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME}}
+          subject-digest: ${{ steps.push.outputs.digest }}
+          push-to-registry: true
+

app/Dockerfile

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+# syntax=docker/dockerfile:1
+FROM node:22-alpine
+WORKDIR /app
+COPY yarn.lock ./
+COPY package.json ./
+RUN yarn install --production
+COPY . .
+EXPOSE 3000
+CMD ["node", "src/index.js"]

app/package.json

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+{
+  "name": "todo-app",
+  "version": "1.0.0",
+  "main": "index.js",
+  "license": "MIT",
+  "scripts": {
+    "prettify": "prettier -l --write \"**/*.js\"",
+    "test": "jest",
+    "dev": "nodemon src/index.js"
+  },
+  "dependencies": {
+    "express": "^4.17.1",
+    "mysql": "^2.18.1",
+    "sqlite3": "^5.0.0",
+    "uuid": "^3.3.3",
+    "wait-port": "^0.2.2"
+  },
+  "resolutions": {
+    "ansi-regex": "5.0.1"
+  },
+  "prettier": {
+    "trailingComma": "all",
+    "tabWidth": 4,
+    "useTabs": false,
+    "semi": true,
+    "singleQuote": true
+  },
+  "devDependencies": {
+    "jest": "^27.2.5",
+    "nodemon": "^2.0.13",
+    "prettier": "^1.18.2"
+  }
+}

app/spec/persistence/sqlite.spec.js

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+const db = require('../../src/persistence/sqlite');
+const fs = require('fs');
+const location = process.env.SQLITE_DB_LOCATION || '/etc/todos/todo.db';
+
+const ITEM = {
+    id: '7aef3d7c-d301-4846-8358-2a91ec9d6be3',
+    name: 'Test',
+    completed: false,
+};
+
+beforeEach(() => {
+    if (fs.existsSync(location)) {
+        fs.unlinkSync(location);
+    }
+});
+
+test('it initializes correctly', async () => {
+    await db.init();
+});
+
+test('it can store and retrieve items', async () => {
+    await db.init();
+
+    await db.storeItem(ITEM);
+
+    const items = await db.getItems();
+    expect(items.length).toBe(1);
+    expect(items[0]).toEqual(ITEM);
+});
+
+test('it can update an existing item', async () => {
+    await db.init();
+
+    const initialItems = await db.getItems();
+    expect(initialItems.length).toBe(0);
+
+    await db.storeItem(ITEM);
+
+    await db.updateItem(
+        ITEM.id,
+        Object.assign({}, ITEM, { completed: !ITEM.completed }),
+    );
+
+    const items = await db.getItems();
+    expect(items.length).toBe(1);
+    expect(items[0].completed).toBe(!ITEM.completed);
+});
+
+test('it can remove an existing item', async () => {
+    await db.init();
+    await db.storeItem(ITEM);
+
+    await db.removeItem(ITEM.id);
+
+    const items = await db.getItems();
+    expect(items.length).toBe(0);
+});
+
+test('it can get a single item', async () => {
+    await db.init();
+    await db.storeItem(ITEM);
+
+    const item = await db.getItem(ITEM.id);
+    expect(item).toEqual(ITEM);
+});

app/spec/routes/addItem.spec.js

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+const db = require('../../src/persistence');
+const addItem = require('../../src/routes/addItem');
+const ITEM = { id: 12345 };
+const uuid = require('uuid/v4');
+
+jest.mock('uuid/v4', () => jest.fn());
+
+jest.mock('../../src/persistence', () => ({
+    removeItem: jest.fn(),
+    storeItem: jest.fn(),
+    getItem: jest.fn(),
+}));
+
+test('it stores item correctly', async () => {
+    const id = 'something-not-a-uuid';
+    const name = 'A sample item';
+    const req = { body: { name } };
+    const res = { send: jest.fn() };
+
+    uuid.mockReturnValue(id);
+
+    await addItem(req, res);
+
+    const expectedItem = { id, name, completed: false };
+
+    expect(db.storeItem.mock.calls.length).toBe(1);
+    expect(db.storeItem.mock.calls[0][0]).toEqual(expectedItem);
+    expect(res.send.mock.calls[0].length).toBe(1);
+    expect(res.send.mock.calls[0][0]).toEqual(expectedItem);
+});

app/spec/routes/deleteItem.spec.js

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+const db = require('../../src/persistence');
+const deleteItem = require('../../src/routes/deleteItem');
+const ITEM = { id: 12345 };
+
+jest.mock('../../src/persistence', () => ({
+    removeItem: jest.fn(),
+    getItem: jest.fn(),
+}));
+
+test('it removes item correctly', async () => {
+    const req = { params: { id: 12345 } };
+    const res = { sendStatus: jest.fn() };
+
+    await deleteItem(req, res);
+
+    expect(db.removeItem.mock.calls.length).toBe(1);
+    expect(db.removeItem.mock.calls[0][0]).toBe(req.params.id);
+    expect(res.sendStatus.mock.calls[0].length).toBe(1);
+    expect(res.sendStatus.mock.calls[0][0]).toBe(200);
+});

app/spec/routes/getItems.spec.js

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+const db = require('../../src/persistence');
+const getItems = require('../../src/routes/getItems');
+const ITEMS = [{ id: 12345 }];
+
+jest.mock('../../src/persistence', () => ({
+    getItems: jest.fn(),
+}));
+
+test('it gets items correctly', async () => {
+    const req = {};
+    const res = { send: jest.fn() };
+    db.getItems.mockReturnValue(Promise.resolve(ITEMS));
+
+    await getItems(req, res);
+
+    expect(db.getItems.mock.calls.length).toBe(1);
+    expect(res.send.mock.calls[0].length).toBe(1);
+    expect(res.send.mock.calls[0][0]).toEqual(ITEMS);
+});

app/spec/routes/updateItem.spec.js

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+const db = require('../../src/persistence');
+const updateItem = require('../../src/routes/updateItem');
+const ITEM = { id: 12345 };
+
+jest.mock('../../src/persistence', () => ({
+    getItem: jest.fn(),
+    updateItem: jest.fn(),
+}));
+
+test('it updates items correctly', async () => {
+    const req = {
+        params: { id: 1234 },
+        body: { name: 'New title', completed: false },
+    };
+    const res = { send: jest.fn() };
+
+    db.getItem.mockReturnValue(Promise.resolve(ITEM));
+
+    await updateItem(req, res);
+
+    expect(db.updateItem.mock.calls.length).toBe(1);
+    expect(db.updateItem.mock.calls[0][0]).toBe(req.params.id);
+    expect(db.updateItem.mock.calls[0][1]).toEqual({
+        name: 'New title',
+        completed: false,
+    });
+
+    expect(db.getItem.mock.calls.length).toBe(1);
+    expect(db.getItem.mock.calls[0][0]).toBe(req.params.id);
+
+    expect(res.send.mock.calls[0].length).toBe(1);
+    expect(res.send.mock.calls[0][0]).toEqual(ITEM);
+});

app/src/index.js

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+const express = require('express');
+const app = express();
+const db = require('./persistence');
+const getItems = require('./routes/getItems');
+const addItem = require('./routes/addItem');
+const updateItem = require('./routes/updateItem');
+const deleteItem = require('./routes/deleteItem');
+
+app.use(express.json());
+app.use(express.static(__dirname + '/static'));
+
+app.get('/items', getItems);
+app.post('/items', addItem);
+app.put('/items/:id', updateItem);
+app.delete('/items/:id', deleteItem);
+
+db.init().then(() => {
+    app.listen(3000, () => console.log('Listening on port 3000'));
+}).catch((err) => {
+    console.error(err);
+    process.exit(1);
+});
+
+const gracefulShutdown = () => {
+    db.teardown()
+        .catch(() => {})
+        .then(() => process.exit());
+};
+
+process.on('SIGINT', gracefulShutdown);
+process.on('SIGTERM', gracefulShutdown);
+process.on('SIGUSR2', gracefulShutdown); // Sent by nodemon

app/src/persistence/index.js

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+if (process.env.MYSQL_HOST) module.exports = require('./mysql');
+else module.exports = require('./sqlite');