From e2a3803138754c1d452ab92aa18823d640716b57 Mon Sep 17 00:00:00 2001
From: wellwelwel <46850407+wellwelwel@users.noreply.github.com>
Date: Fri, 13 Sep 2024 23:12:06 -0300
Subject: [PATCH] feat: add the `--help` command line option

---
 src/bin/help.ts       | 103 ++++++++++++++++++++++++++++++++++++++++++
 src/bin/index.ts      |   8 ++++
 test/e2e/help.test.ts |  40 ++++++++++++++++
 3 files changed, 151 insertions(+)
 create mode 100644 src/bin/help.ts
 create mode 100644 test/e2e/help.test.ts

diff --git a/src/bin/help.ts b/src/bin/help.ts
new file mode 100644
index 00000000..c90e4b27
--- /dev/null
+++ b/src/bin/help.ts
@@ -0,0 +1,103 @@
+import { format } from '../services/format.js';
+import { Write } from '../services/write.js';
+
+const b = (text: string) => `${format(text).bold()}`;
+const i = (text: string) => `${format(text).italic()}`;
+const u = (text: string) => `${format(text).underline()}`;
+const d = (text: string) => `${format(text).dim()}`;
+
+const options = i('[--options]');
+const option = i('[--option]');
+const paths = i('[paths]');
+const path = i('[path]');
+const bullet = d('●');
+const summary: [string, string][] = [
+  ['--bun', 'Enforce tests to run through Bun.'],
+  ['--concurrency', 'Limit the number of tests running concurrently.'],
+  ['--config, -c', 'Specify a configuration file.'],
+  ['--debug, -d', 'Show detailed logs.'],
+  ['--deno', 'Enforce tests to run through Deno.'],
+  ['--denoAllow', 'Allow permissions for Deno.'],
+  ['--denoCjs', 'Support CommonJS in Deno.'],
+  ['--denoDeny', 'Deny permissions for Deno.'],
+  ['--enforce, -x', 'Validate options before running tests.'],
+  ['--envFile', 'Read and set an environment file.'],
+  ['--exclude', 'Exclude by path using Regex to match files.'],
+  ['--failFast', 'Stop tests at the first failure.'],
+  ['--filter', 'Filter by path using Regex to match files.'],
+  ['--help, -h', "Show Poku's CLI basic usage."],
+  ['--killPid', 'Terminate the specified processes.'],
+  ['--killPort', 'Terminate the specified ports.'],
+  ['--killRange', 'Terminate the specified port ranges.'],
+  ['--listFiles', 'Display all the files returned in the terminal.'],
+  ['--node', 'Enforce tests to run through Node.js.'],
+  ['--parallel, -p', 'Run tests files in parallel.'],
+  ['--platform', 'Enforce tests to run through a platform.'],
+  ['--quiet, -q', 'Run tests with no logs.'],
+  ['--version, -v', "Show Poku's installed version."],
+  ['--watch, -w', 'Watch for test events.'],
+  ['--watchInterval', 'Set an interval for watch events.'],
+];
+const sortedSummary = summary.sort(([a], [b]) => a.localeCompare(b));
+const largeEndPad = (() =>
+  Math.max(...summary.map(([start]) => start.length)))();
+
+const header = `
+🐷 ${format(' Poku — CLI Usage ').bg('brightMagenta')}
+
+› ${u(b('Usage:'))}
+
+  poku ${options} ${paths}
+  poku ${paths} ${options}
+  poku ${option} ${path} ${option} ${path}
+
+› ${u(b('Ensuring platforms:'))}
+
+  poku ${b('--node')} ${options} ${paths}
+  poku ${b('--bun')} ${options} ${paths}
+  poku ${b('--deno')} ${options} ${paths}
+
+› ${u(b('Tips:'))}
+
+  ${bullet} All CLI options use camel case pattern (e.g.: ${b('--failFast')}).
+  ${bullet} Use ${b('=')} to set an option value (e.g.: ${b('--concurrency=4')}).
+  ${bullet} If you're seeing this, ${u('feel special')} ✨
+`;
+
+const main = `
+🐽 ${format(' Poku — Options ').bg('brightMagenta')}
+
+› ${u(b('Summary:'))}
+
+${sortedSummary
+  .map(
+    ([command, description]) =>
+      `${command.padEnd(largeEndPad)}  ${d(description)}`
+  )
+  .join('\n')}
+
+› ${u(b('Notes:'))}
+
+  ${bullet} For Glob support, see:
+    ${u('https://poku.io/docs/documentation/poku/include-files#by-extending-glob-patterns-from-shell')}
+
+  ${bullet} Avoid conflicts for environments with multiple platforms:
+    ${u('https://poku.io/docs/tutorials/cross-platform')}
+`;
+
+const footer = `
+${b('Documentation:')} ${u('https://poku.io')}
+
+${bullet} ${b('Poku')} is made with ${b('love')} and ${b('care')} in every detail.
+${bullet} Give him a ${b('star')} to show your support 🌟
+`;
+
+export const help = () => {
+  Write.hr();
+  Write.log(header.trim());
+  Write.hr();
+  Write.log(main.trim());
+  Write.hr();
+  Write.log(footer.trim());
+  Write.hr();
+};
diff --git a/src/bin/index.ts b/src/bin/index.ts
index 184ec101..42257581 100644
--- a/src/bin/index.ts
+++ b/src/bin/index.ts
@@ -20,6 +20,14 @@ import { getConfigs } from '../parsers/options.js';
     return;
   }
 
+  if (hasArg('help') || hasArg('h', '-')) {
+    const { help } = require('./help.js');
+
+    help();
+
+    return;
+  }
+
   const enforce = hasArg('enforce') || hasArg('x', '-');
   const configFile = getArg('config') || getArg('c', '-');
   const defaultConfigs = await getConfigs(configFile);
diff --git a/test/e2e/help.test.ts b/test/e2e/help.test.ts
new file mode 100644
index 00000000..6bf5d2e7
--- /dev/null
+++ b/test/e2e/help.test.ts
@@ -0,0 +1,40 @@
+import { describe } from '../../src/modules/helpers/describe.js';
+import { it } from '../../src/modules/helpers/it/core.js';
+import { skip } from '../../src/modules/helpers/skip.js';
+import { assert } from '../../src/modules/essentials/assert.js';
+import { inspectPoku, isBuild } from '../__utils__/capture-cli.test.js';
+import { getRuntime } from '../../src/parsers/get-runtime.js';
+
+const runtime = getRuntime();
+
+if (isBuild || runtime === 'deno') skip();
+
+describe('Help', async () => {
+  await it('--help', async () => {
+    const results = await inspectPoku('--help');
+
+    if (results.exitCode !== 0) {
+      console.log(results.stdout);
+      console.log(results.stderr);
+    }
+
+    assert.strictEqual(results.exitCode, 0);
+    assert.match(results.stdout, /Poku — CLI Usage/);
+    assert.match(results.stdout, /Poku — Options/);
+    assert.match(results.stdout, /https:\/\/poku.io/);
+  });
+
+  await it('-h', async () => {
+    const results = await inspectPoku('-h');
+
+    if (results.exitCode !== 0) {
+      console.log(results.stdout);
+      console.log(results.stderr);
+    }
+
+    assert.strictEqual(results.exitCode, 0);
+    assert.match(results.stdout, /Poku — CLI Usage/);
+    assert.match(results.stdout, /Poku — Options/);
+    assert.match(results.stdout, /https:\/\/poku.io/);
+  });
+});