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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import path from 'node:path';
import * as fs from 'node:fs';
import { Writable } from 'node:stream';
import { ProxyAgent } from 'undici';
import { CommandContext } from '../../ui/commands/types.js';
import {
getGitRepoRoot,
getLatestGitHubRelease,
isGitHubRepository,
getGitHubRepoInfo,
} from '../../utils/gitUtils.js';
import {
CommandKind,
SlashCommand,
SlashCommandActionReturn,
} from './types.js';
import { getUrlOpenCommand } from '../../ui/utils/commandUtils.js';
// Generate OS-specific commands to open the GitHub pages needed for setup.
function getOpenUrlsCommands(readmeUrl: string): string[] {
// Determine the OS-specific command to open URLs, ex: 'open', 'xdg-open', etc
const openCmd = getUrlOpenCommand();
// Build a list of URLs to open
const urlsToOpen = [readmeUrl];
const repoInfo = getGitHubRepoInfo();
if (repoInfo) {
urlsToOpen.push(
`https://github.com/${repoInfo.owner}/${repoInfo.repo}/settings/secrets/actions`,
);
}
// Create and join the individual commands
const commands = urlsToOpen.map((url) => `${openCmd} "${url}"`);
return commands;
}
// Add Gemini CLI specific entries to .gitignore file
export async function updateGitignore(gitRepoRoot: string): Promise<void> {
const gitignoreEntries = ['.gemini/', 'gha-creds-*.json'];
const gitignorePath = path.join(gitRepoRoot, '.gitignore');
try {
// Check if .gitignore exists and read its content
let existingContent = '';
let fileExists = true;
try {
existingContent = await fs.promises.readFile(gitignorePath, 'utf8');
} catch (_error) {
// File doesn't exist
fileExists = false;
}
if (!fileExists) {
// Create new .gitignore file with the entries
const contentToWrite = gitignoreEntries.join('\n') + '\n';
await fs.promises.writeFile(gitignorePath, contentToWrite);
} else {
// Check which entries are missing
const missingEntries = gitignoreEntries.filter(
(entry) =>
!existingContent
.split(/\r?\n/)
.some((line) => line.split('#')[0].trim() === entry),
);
if (missingEntries.length > 0) {
const contentToAdd = '\n' + missingEntries.join('\n') + '\n';
await fs.promises.appendFile(gitignorePath, contentToAdd);
}
}
} catch (error) {
console.debug('Failed to update .gitignore:', error);
// Continue without failing the whole command
}
}
export const setupGithubCommand: SlashCommand = {
name: 'setup-github',
description: 'Set up GitHub Actions',
kind: CommandKind.BUILT_IN,
action: async (
context: CommandContext,
): Promise<SlashCommandActionReturn> => {
const abortController = new AbortController();
if (!isGitHubRepository()) {
throw new Error(
'Unable to determine the GitHub repository. /setup-github must be run from a git repository.',
);
}
// Find the root directory of the repo
let gitRepoRoot: string;
try {
gitRepoRoot = getGitRepoRoot();
} catch (_error) {
console.debug(`Failed to get git repo root:`, _error);
throw new Error(
'Unable to determine the GitHub repository. /setup-github must be run from a git repository.',
);
}
// Get the latest release tag from GitHub
const proxy = context?.services?.config?.getProxy();
const releaseTag = await getLatestGitHubRelease(proxy);
const readmeUrl = `https://github.com/google-github-actions/run-gemini-cli/blob/${releaseTag}/README.md#quick-start`;
// Create the .github/workflows directory to download the files into
const githubWorkflowsDir = path.join(gitRepoRoot, '.github', 'workflows');
try {
await fs.promises.mkdir(githubWorkflowsDir, { recursive: true });
} catch (_error) {
console.debug(
`Failed to create ${githubWorkflowsDir} directory:`,
_error,
);
throw new Error(
`Unable to create ${githubWorkflowsDir} directory. Do you have file permissions in the current directory?`,
);
}
// Download each workflow in parallel - there aren't enough files to warrant
// a full workerpool model here.
const workflows = [
'gemini-cli/gemini-cli.yml',
'issue-triage/gemini-issue-automated-triage.yml',
'issue-triage/gemini-issue-scheduled-triage.yml',
'pr-review/gemini-pr-review.yml',
];
const downloads = [];
for (const workflow of workflows) {
downloads.push(
(async () => {
const endpoint = `https://raw.githubusercontent.com/google-github-actions/run-gemini-cli/refs/tags/${releaseTag}/examples/workflows/${workflow}`;
const response = await fetch(endpoint, {
method: 'GET',
dispatcher: proxy ? new ProxyAgent(proxy) : undefined,
signal: AbortSignal.any([
AbortSignal.timeout(30_000),
abortController.signal,
]),
} as RequestInit);
if (!response.ok) {
throw new Error(
`Invalid response code downloading ${endpoint}: ${response.status} - ${response.statusText}`,
);
}
const body = response.body;
if (!body) {
throw new Error(
`Empty body while downloading ${endpoint}: ${response.status} - ${response.statusText}`,
);
}
const destination = path.resolve(
githubWorkflowsDir,
path.basename(workflow),
);
const fileStream = fs.createWriteStream(destination, {
mode: 0o644, // -rw-r--r--, user(rw), group(r), other(r)
flags: 'w', // write and overwrite
flush: true,
});
await body.pipeTo(Writable.toWeb(fileStream));
})(),
);
}
// Wait for all downloads to complete
await Promise.all(downloads).finally(() => {
// Stop existing downloads
abortController.abort();
});
// Add entries to .gitignore file
await updateGitignore(gitRepoRoot);
// Print out a message
const commands = [];
commands.push('set -eEuo pipefail');
commands.push(
`echo "Successfully downloaded ${workflows.length} workflows and updated .gitignore. Follow the steps in ${readmeUrl} (skipping the /setup-github step) to complete setup."`,
);
commands.push(...getOpenUrlsCommands(readmeUrl));
const command = `(${commands.join(' && ')})`;
return {
type: 'tool',
toolName: 'run_shell_command',
toolArgs: {
description:
'Setting up GitHub Actions to triage issues and review PRs with Gemini.',
command,
},
};
},
};
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