Function buildGitHubApp

apps/api/src/github/github-app.ts:9–34

(env: ApiEnv)

type ApiEnv = typeof apiEnv;

export function buildGitHubApp(env: ApiEnv): GitHubApp {
    if (env.LOCAL_DEV) {
        logger.info("LOCAL_DEV=true - using LocalDevGitHubApp (fake GitHub integration)");
        return new LocalDevGitHubApp();
    }

    const missing = getMissingGitHubCredentials(env);
    if (missing.length > 0) {
        throw new Error(
            `Missing GitHub app credentials: ${missing.join(", ")}. Set them, or set LOCAL_DEV=true to use the fake app.`,
        );
    }

    // Postgres-backed ETag store enables conditional requests (free 304s) on every GitHub call.
    const etagStore = new PrismaEtagStore(db);

    return new OctokitGitHubApp(
        {
            appId: env.GITHUB_APP_ID!,
            privateKey: env.GITHUB_APP_PRIVATE_KEY!,
            webhookSecret: env.GITHUB_APP_WEBHOOK_SECRET!,
            appSlug: env.GITHUB_APP_SLUG!,
        },
        etagStore,
    );
}

function getMissingGitHubCredentials(env: ApiEnv): string[] {
    const missing: string[] = [];