Feat: [create astro] add directory prompt (#3168)

* wip: add prompt for directory with validation

* feat: wire up dir response to cwd

* feat: improve error handling on non-empty dirs

* fix: update test helpers to execaSync

* chore: add .skipped to old tests for clarity

* deps: add mocha and chai to create-astro

* feat: add directory step test with fixture

* feat: update turbo to run create-astro tests again 🥳

* chore: changeset

11 files changed, 161 insertions, 20 deletions

diff --git a/.changeset/soft-berries-admire.md b/.changeset/soft-berries-admire.md
new file mode 100644
index 000000000..a0d2957ad
--- /dev/null
+++ b/.changeset/soft-berries-admire.md
@@ -0,0 +1,5 @@
+---
+'create-astro': minor
+---
+
+Add prompt to choose a directory, now defaulting to a separate "./my-astro-site" instead of "." (current directory)
diff --git a/package.json b/package.json
index badc19ad0..5a9b6e267 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
     "build:ci": "turbo run build:ci --no-deps --scope=astro --scope=create-astro --scope=\"@astrojs/*\"",
     "build:examples": "turbo run build --scope=\"@example/*\"",
     "dev": "turbo run dev --no-deps --no-cache --parallel --scope=astro --scope=create-astro --scope=\"@astrojs/*\"",
-    "test": "turbo run test --filter=!create-astro --concurrency=1",
+    "test": "turbo run test --concurrency=1",
     "test:match": "cd packages/astro && pnpm run test:match",
     "test:templates": "turbo run test --filter=create-astro --concurrency=1",
     "test:smoke": "node scripts/smoke/index.js",
diff --git a/packages/create-astro/package.json b/packages/create-astro/package.json
index 3714ddbdd..b28997d3a 100644
--- a/packages/create-astro/package.json
+++ b/packages/create-astro/package.json
@@ -21,7 +21,7 @@
     "build": "astro-scripts build \"src/**/*.ts\" && tsc",
     "build:ci": "astro-scripts build \"src/**/*.ts\"",
     "dev": "astro-scripts dev \"src/**/*.ts\"",
-    "test": "rm -rf test/fixtures && mkdir test/fixtures && node --unhandled-rejections=strict test/create-astro.test.js"
+    "test": "mocha --exit --timeout 20000"
   },
   "files": [
     "dist",
@@ -38,8 +38,12 @@
     "yargs-parser": "^21.0.1"
   },
   "devDependencies": {
+    "@types/chai": "^4.3.1",
+    "@types/mocha": "^9.1.0",
     "@types/yargs-parser": "^21.0.0",
     "astro-scripts": "workspace:*",
+    "chai": "^4.3.6",
+    "mocha": "^9.2.2",
     "uvu": "^0.5.3"
   },
   "engines": {
diff --git a/packages/create-astro/src/index.ts b/packages/create-astro/src/index.ts
index ec54d250c..2286c13f5 100644
--- a/packages/create-astro/src/index.ts
+++ b/packages/create-astro/src/index.ts
@@ -28,6 +28,10 @@ export function mkdirp(dir: string) {
 	}
 }
 
+function isEmpty(dirPath: string) {
+	return !fs.existsSync(dirPath) || fs.readdirSync(dirPath).length === 0;
+}
+
 const { version } = JSON.parse(
 	fs.readFileSync(new URL('../package.json', import.meta.url), 'utf-8')
 );
@@ -47,22 +51,41 @@ export async function main() {
 
 	spinner.succeed();
 
-	const cwd = (args['_'][2] as string) || '.';
-	if (fs.existsSync(cwd)) {
-		if (fs.readdirSync(cwd).length > 0) {
-			const response = await prompts({
-				type: 'confirm',
-				name: 'forceOverwrite',
-				message: 'Directory not empty. Continue [force overwrite]?',
-				initial: false,
-			});
-			if (!response.forceOverwrite) {
-				process.exit(1);
-			}
-			mkdirp(cwd);
+	let cwd = args['_'][2] as string;
+
+	if (cwd && isEmpty(cwd)) {
+		let acknowledgeProjectDir = ora({
+			color: 'green',
+			text: `Using ${bold(cwd)} as project directory.`,
+		});
+		acknowledgeProjectDir.succeed();
+	}
+
+	if (!cwd || !isEmpty(cwd)) {
+		const notEmptyMsg = (dirPath: string) =>
+			`"${bold(dirPath)}" is not empty. Please clear contents or choose a different path.`;
+
+		if (!isEmpty(cwd)) {
+			let rejectProjectDir = ora({ color: 'red', text: notEmptyMsg(cwd) });
+			rejectProjectDir.fail();
 		}
-	} else {
-		mkdirp(cwd);
+		const dirResponse = await prompts({
+			type: 'text',
+			name: 'directory',
+			message: 'Where would you like to create your app?',
+			initial: './my-astro-site',
+			validate(value) {
+				if (!isEmpty(value)) {
+					return notEmptyMsg(value);
+				}
+				return true;
+			},
+		});
+		cwd = dirResponse.directory;
+	}
+
+	if (!cwd) {
+		process.exit(1);
 	}
 
 	const options = await prompts([
diff --git a/packages/create-astro/test/.gitignore b/packages/create-astro/test/.gitignore
deleted file mode 100644
index 116caa127..000000000
--- a/packages/create-astro/test/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-fixtures
diff --git a/packages/create-astro/test/create-astro.test.js b/packages/create-astro/test/create-astro.test.js.skipped
index 86a64e1f5..86a64e1f5 100644
--- a/packages/create-astro/test/create-astro.test.js
+++ b/packages/create-astro/test/create-astro.test.js.skipped
diff --git a/packages/create-astro/test/directory-step.test.js b/packages/create-astro/test/directory-step.test.js
new file mode 100644
index 000000000..843b8cf92
--- /dev/null
+++ b/packages/create-astro/test/directory-step.test.js
@@ -0,0 +1,102 @@
+import { execa} from 'execa';
+import { fileURLToPath } from 'url';
+import { dirname, resolve } from 'path';
+import {promises, existsSync} from 'fs'
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = dirname(__filename);
+
+const createAstroError = new Error('Timed out waiting for create-astro to respond with expected output.')
+const timeout = 5000;
+
+const instructions = {
+	directory: 'Where would you like to create your app?',
+	template: 'Which app template would you like to use?', 
+};
+const inputs = {
+	nonEmptyDir: './fixtures/select-directory/nonempty-dir',
+	emptyDir: './fixtures/select-directory/empty-dir',
+	nonexistentDir: './fixtures/select-directory/banana-dir',
+};
+
+function promiseWithTimeout(testFn) {
+	return new Promise((resolve, reject) => {
+		const timeoutEvent = setTimeout(() => {
+			reject(createAstroError);
+		}, timeout);
+		function resolver() {
+			clearTimeout(timeoutEvent);
+			resolve();
+		}
+		testFn(resolver);
+	})
+}
+
+function setup(args = []) {
+	const {stdout, stdin} = execa('../create-astro.mjs', args, { cwd: __dirname })
+	return {
+		stdin,
+		stdout,
+	}
+}
+
+describe('[create-astro] select directory', function() {
+	this.timeout(timeout);
+	it ('should prompt for directory when none is provided', function () {
+		return promiseWithTimeout(resolve => {
+			const {stdout} = setup()
+			stdout.on('data', chunk => {
+				if (chunk.includes(instructions.directory)) {
+					resolve()
+				}
+			})
+		})
+	})
+	it ('should NOT proceed on a non-empty directory', function () {
+		return promiseWithTimeout(resolve => {
+			const {stdout} = setup([inputs.nonEmptyDir])
+			stdout.on('data', chunk => {
+				if (chunk.includes(instructions.directory)) {
+					resolve()
+				}
+			})
+		})
+	})
+	it ('should proceed on an empty directory', async function () {
+		const resolvedEmptyDirPath = resolve(__dirname, inputs.emptyDir)
+		if (!existsSync(resolvedEmptyDirPath)) {
+			await promises.mkdir(resolvedEmptyDirPath)
+		}
+		return promiseWithTimeout(resolve => {
+			const {stdout} = setup([inputs.emptyDir])
+			stdout.on('data', chunk => {
+				if (chunk.includes(instructions.template)) {
+					resolve()
+				}
+			})
+		})
+	})
+	it ('should proceed when directory does not exist', function () {
+		return promiseWithTimeout(resolve => {
+			const {stdout} = setup([inputs.nonexistentDir])
+			stdout.on('data', chunk => {
+				if (chunk.includes(instructions.template)) {
+					resolve()
+				}
+			})
+		})
+	})
+	it ('should error on bad directory selection in prompt', function () {
+		return promiseWithTimeout(resolve => {
+			const {stdout, stdin} = setup()
+			stdout.on('data', chunk => {
+				if (chunk.includes('Please clear contents or choose a different path.')) {
+					resolve()
+				}
+				if (chunk.includes(instructions.directory)) {
+					stdin.write(`${inputs.nonEmptyDir}\x0D`)
+				}
+			})
+		})
+	})
+})
diff --git a/packages/create-astro/test/external.test.js b/packages/create-astro/test/external.test.js.skipped
index 277e498e0..277e498e0 100644
--- a/packages/create-astro/test/external.test.js
+++ b/packages/create-astro/test/external.test.js.skipped
diff --git a/packages/create-astro/test/fixtures/select-directory/nonempty-dir/astro-origin-story.php b/packages/create-astro/test/fixtures/select-directory/nonempty-dir/astro-origin-story.php
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/packages/create-astro/test/fixtures/select-directory/nonempty-dir/astro-origin-story.php
diff --git a/packages/create-astro/test/helpers.js b/packages/create-astro/test/helpers.js
index 6e4445045..4f0b6ec3e 100644
--- a/packages/create-astro/test/helpers.js
+++ b/packages/create-astro/test/helpers.js
@@ -1,8 +1,8 @@
-import { execa } from 'execa';
+import { execaSync } from 'execa';
 import path from 'path';
 import { fileURLToPath, pathToFileURL } from 'url';
 
-const GITHUB_SHA = process.env.GITHUB_SHA || execa.sync('git', ['rev-parse', 'HEAD']).stdout; // process.env.GITHUB_SHA will be set in CI; if testing locally execa() will gather this
+const GITHUB_SHA = process.env.GITHUB_SHA || execaSync('git', ['rev-parse', 'HEAD']).stdout; // process.env.GITHUB_SHA will be set in CI; if testing locally execa() will gather this
 const FIXTURES_DIR = path.join(fileURLToPath(path.dirname(import.meta.url)), 'fixtures');
 const FIXTURES_URL = pathToFileURL(FIXTURES_DIR + '/');
 
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index b6c860568..ca2cdee4f 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -1202,12 +1202,16 @@ importers:
 
   packages/create-astro:
     specifiers:
+      '@types/chai': ^4.3.1
       '@types/degit': ^2.8.3
+      '@types/mocha': ^9.1.0
       '@types/prompts': ^2.0.14
       '@types/yargs-parser': ^21.0.0
       astro-scripts: workspace:*
+      chai: ^4.3.6
       degit: ^2.8.4
       kleur: ^4.1.4
+      mocha: ^9.2.2
       node-fetch: ^3.2.3
       ora: ^6.1.0
       prompts: ^2.4.2
@@ -1223,8 +1227,12 @@ importers:
       prompts: 2.4.2
       yargs-parser: 21.0.1
     devDependencies:
+      '@types/chai': 4.3.1
+      '@types/mocha': 9.1.0
       '@types/yargs-parser': 21.0.0
       astro-scripts: link:../../scripts
+      chai: 4.3.6
+      mocha: 9.2.2
       uvu: 0.5.3
 
   packages/integrations/deno: