Function fetchIssueContext

apps/agents-web/lib/server/github/github-context.ts:138–238

(
  installationId: number,
  owner: string,
  repo: string,
  issueNumber: number,
  isPullRequest: boolean
)

 * Fetch full issue/PR context including all comments
 */
export async function fetchIssueContext(
  installationId: number,
  owner: string,
  repo: string,
  issueNumber: number,
  isPullRequest: boolean
): Promise<IssueContext> {
  console.log(`📖 [Context] Fetching ${isPullRequest ? "PR" : "Issue"} #${issueNumber} from ${owner}/${repo}`)

  const token = await getInstallationAccessToken(installationId)
  const headers = {
    Authorization: `Bearer ${token}`,
    Accept: "application/vnd.github+json",
    "X-GitHub-Api-Version": "2022-11-28",
    "User-Agent": "21st-dev-app",
  }

  // Fetch issue or PR details
  const detailsUrl = isPullRequest
    ? `https://api.github.com/repos/${owner}/${repo}/pulls/${issueNumber}`
    : `https://api.github.com/repos/${owner}/${repo}/issues/${issueNumber}`

  console.log(`📖 [Context] Fetching details from: ${detailsUrl}`)

  // Fetch details, comments, and commits (for PRs) in parallel
  const fetchPromises: Promise<Response>[] = [
    fetch(detailsUrl, { headers }),
    fetch(
      `https://api.github.com/repos/${owner}/${repo}/issues/${issueNumber}/comments?per_page=100`,
      { headers }
    ),
  ]

  // Also fetch commits for PRs
  if (isPullRequest) {
    fetchPromises.push(
      fetch(
        `https://api.github.com/repos/${owner}/${repo}/pulls/${issueNumber}/commits?per_page=100`,
        { headers }
      )
    )
  }

  const responses = await Promise.all(fetchPromises)
  const [detailsRes, commentsRes, commitsRes] = responses

  if (!detailsRes.ok) {
    console.error(`❌ [Context] Failed to fetch details: ${detailsRes.status}`)
    throw new Error(`Failed to fetch issue details: ${detailsRes.status}`)
  }

  const details: GitHubIssue | GitHubPullRequest = await detailsRes.json()
  const comments: GitHubComment[] = commentsRes.ok ? await commentsRes.json() : []
  const commits: GitHubCommit[] = commitsRes?.ok ? await commitsRes.json() : []

  console.log(`📖 [Context] Fetched issue: "${details.title}"`)
  console.log(`📖 [Context] Author: @${details.user.login}, State: ${details.state}`)
  console.log(`📖 [Context] Body length: ${details.body?.length || 0} chars`)