import { homedir } from "os"
import { join } from "path"

/** Read the ANTHROPIC_API_KEY from ~/.env. Returns undefined if not found. */
export async function getApiKey(): Promise<string | undefined> {
  const envFile = Bun.file(join(homedir(), ".env"))
  if (!(await envFile.exists())) return undefined

  const envContent = await envFile.text()
  return envContent.match(/^(?:export\s+)?ANTHROPIC_API_KEY=["']?([^"'\s]+)["']?/m)?.[1]
}