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/**
* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import { execSync } from 'child_process';
import { ProxyAgent, setGlobalDispatcher } from 'undici';
/**
* Checks if a directory is within a git repository hosted on GitHub.
* @returns true if the directory is in a git repository with a github.com remote, false otherwise
*/
export const isGitHubRepository = (): boolean => {
try {
const remotes = (
execSync('git remote -v', {
encoding: 'utf-8',
}) || ''
).trim();
const pattern = /github\.com/;
return pattern.test(remotes);
} catch (_error) {
// If any filesystem error occurs, assume not a git repo
console.debug(`Failed to get git remote:`, _error);
return false;
}
};
/**
* getGitRepoRoot returns the root directory of the git repository.
* @returns the path to the root of the git repo.
* @throws error if the exec command fails.
*/
export const getGitRepoRoot = (): string => {
const gitRepoRoot = (
execSync('git rev-parse --show-toplevel', {
encoding: 'utf-8',
}) || ''
).trim();
if (!gitRepoRoot) {
throw new Error(`Git repo returned empty value`);
}
return gitRepoRoot;
};
/**
* getLatestGitHubRelease returns the release tag as a string.
* @returns string of the release tag (e.g. "v1.2.3").
*/
export const getLatestGitHubRelease = async (
proxy?: string,
): Promise<string> => {
try {
const controller = new AbortController();
if (proxy) {
setGlobalDispatcher(new ProxyAgent(proxy));
}
const endpoint = `https://api.github.com/repos/google-github-actions/run-gemini-cli/releases/latest`;
const response = await fetch(endpoint, {
method: 'GET',
headers: {
Accept: 'application/vnd.github+json',
'Content-Type': 'application/json',
'X-GitHub-Api-Version': '2022-11-28',
},
signal: controller.signal,
});
if (!response.ok) {
throw new Error(
`Invalid response code: ${response.status} - ${response.statusText}`,
);
}
const releaseTag = (await response.json()).tag_name;
if (!releaseTag) {
throw new Error(`Response did not include tag_name field`);
}
return releaseTag;
} catch (_error) {
console.debug(`Failed to determine latest run-gemini-cli release:`, _error);
throw new Error(
`Unable to determine the latest run-gemini-cli release on GitHub.`,
);
}
};
/**
* getGitHubRepoInfo returns the owner and repository for a GitHub repo.
* @returns the owner and repository of the github repo.
* @throws error if the exec command fails.
*/
export function getGitHubRepoInfo(): { owner: string; repo: string } {
const remoteUrl = execSync('git remote get-url origin', {
encoding: 'utf-8',
}).trim();
// Matches either https://github.com/owner/repo.git or [email protected]:owner/repo.git
const match = remoteUrl.match(
/(?:https?:\/\/|git@)github\.com(?::|\/)([^/]+)\/([^/]+?)(?:\.git)?$/,
);
// If the regex fails match, throw an error.
if (!match || !match[1] || !match[2]) {
throw new Error(
`Owner & repo could not be extracted from remote URL: ${remoteUrl}`,
);
}
return { owner: match[1], repo: match[2] };
}
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