// Bugzilla configuration — loads from .bugzilla.json or environment variables
import * as fs from "fs"
import * as path from "path"

export interface BugzillaConfig {
  baseUrl: string
  apiKey: string
  product: string
  component: string
}

const CONFIG_FILE = ".bugzilla.json"

export function loadConfig(cwd = process.cwd()): BugzillaConfig {
  const filePath = path.join(cwd, CONFIG_FILE)

  if (fs.existsSync(filePath)) {
    const raw = fs.readFileSync(filePath, "utf-8")
    const json = JSON.parse(raw)
    return {
      baseUrl: json.baseUrl ?? json.base_url ?? "",
      apiKey: json.apiKey ?? json.api_key,
      product: json.product ?? "",
      component: json.component ?? "",
    }
  }

  const baseUrl = process.env.BUGZILLA_URL
  const apiKey = process.env.BUGZILLA_API_KEY

  if (!baseUrl || !apiKey) {
    throw new Error(
      `Bugzilla config not found. Create ${CONFIG_FILE} or set BUGZILLA_URL and BUGZILLA_API_KEY`
    )
  }

  return {
    baseUrl: baseUrl.replace(/\/+$/, ""),
    apiKey,
    product: process.env.BUGZILLA_PRODUCT ?? "",
    component: process.env.BUGZILLA_COMPONENT ?? "",
  }
}