feat(backend): add basic backend server

backend/.eslintignore

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+# don't ever lint node_modules
+node_modules
+# don't lint build output (make sure it's set to your correct build folder name)
+dist
+# don't lint nyc coverage output
+coverage

backend/.eslintrc.js

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+module.exports = {
+	'env': {
+		'commonjs': true,
+		'es6': true,
+		'node': true
+	},
+	'parser': '@typescript-eslint/parser',
+	'extends': [
+		'eslint:recommended',
+		'plugin:@typescript-eslint/eslint-recommended',
+		'plugin:@typescript-eslint/recommended'
+	],
+	'globals': {
+		'Atomics': 'readonly',
+		'SharedArrayBuffer': 'readonly'
+	},
+	'parserOptions': {
+		'ecmaVersion': 2018
+	},
+	'rules': {
+		'indent': 'off',
+		'@typescript-eslint/indent': ['warn', 'tab', { SwitchCase: 1 }],
+		'linebreak-style': [
+			'error',
+			'unix'
+		],
+		'quotes': [
+			'error',
+			'single'
+		],
+		'semi': [
+			'error',
+			'always'
+		],
+		'require-atomic-updates': 'off',
+		'brace-style': ['error', 'stroustrup'],
+		'no-throw-literal': 'error',
+		'@typescript-eslint/explicit-function-return-type': 'off',
+		'@typescript-eslint/no-explicit-any': 'off'
+	}
+};

backend/package.json

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+{
+  "name": "backend",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "dev": "ts-node src/app.ts"
+  },
+  "author": "DCsunset",
+  "license": "GPL-3.0-or-later",
+  "dependencies": {
+    "@koa/router": "^9.0.1",
+    "koa": "^2.13.0",
+    "koa-bodyparser": "^4.3.0",
+    "koa-logger": "^3.2.1",
+    "taskwarrior-lib": "^0.2.0"
+  },
+  "devDependencies": {
+    "@types/koa": "^2.11.3",
+    "@types/koa-bodyparser": "^4.3.0",
+    "@types/koa-logger": "^3.1.1",
+    "@types/koa-router": "^7.4.1",
+    "@types/koa__router": "^8.0.2",
+    "@typescript-eslint/eslint-plugin": "^3.5.0",
+    "@typescript-eslint/parser": "^3.5.0",
+    "eslint": "^7.3.1",
+    "ts-node": "^8.10.2",
+    "typescript": "^3.9.5"
+  }
+}

backend/src/app.ts

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+import * as Koa from 'koa';
+import * as Router from '@koa/router';
+import * as bodyParser from 'koa-bodyparser';
+import tasksRouter from './tasks';
+
+const app = new Koa();
+
+app.use(bodyParser());
+
+const router = new Router();
+router.use(tasksRouter.routes());
+
+app.use(router.routes());
+app.use(router.allowedMethods());
+
+const prod = process.env.NODE_ENV === 'production';
+const addr = prod ? '0.0.0.0' : 'localhost';
+app.listen(3000, addr);
+
+console.log(`Server listening on http://${addr}:3000`);

backend/src/tasks.ts

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+import * as Router from '@koa/router';
+
+import taskwarrior from './taskwarrior';
+
+const router = new Router();
+
+router.get('/', async ctx => {
+	const tasks = taskwarrior.load();
+	ctx.body = tasks;
+});
+
+router.post('/', async ctx => {
+	const msg = taskwarrior.update(ctx.body);
+	console.log(msg);
+	ctx.status = 200;
+});
+
+router.put('/', async ctx => {
+	const msg = taskwarrior.update(ctx.body);
+	console.log(msg);
+	ctx.status = 200;
+});
+
+router.delete('/', async ctx => {
+	const tasks = ctx.query.tasks;
+	console.log(tasks);
+	/*
+	const msg = taskwarrior.update(tasks);
+	console.log(msg);
+	*/
+	ctx.status = 200;
+});
+
+export default router;

backend/src/taskwarrior.ts

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+import { TaskwarriorLib } from 'taskwarrior-lib';
+import * as path from 'path';
+
+const prod = process.env.NODE_ENV === 'production';
+
+const taskwarrior = new TaskwarriorLib(
+	prod ? '~/.taskrc' : path.join(__dirname, '../test/.taskrc'),
+	prod ? '~/.task' : path.join(__dirname, '../test/.task'),
+);
+
+export default taskwarrior;

backend/tsconfig.json

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+{
+	"compilerOptions": {
+		"module": "commonjs",
+		"target": "es2017",
+		"outDir": "./dist",
+		"sourceMap": true,
+		"strict": true,
+    "baseUrl": "."
+	},
+	"include": ["src"]
+}