import createClient from 'openapi-fetch'
import type { paths } from './types'

// Vue CLI uses process.env.VUE_APP_*
const vueCliBase: string | undefined = typeof process !== 'undefined' ? (process.env?.VUE_APP_API_BASE ?? undefined) : undefined
const isTest = typeof process !== 'undefined' && (process.env?.VITEST === 'true' || process.env?.NODE_ENV === 'test')
// Prefer absolute http URL in tests to avoid TLS issues and ease MSW interception
// Use host-only base URL; always pass full "/api/v1/..." paths to the client methods
const defaultBase = ''
const baseUrl: string = isTest ? 'http://localhost' : (vueCliBase || defaultBase)

let householdSlugProvider: (() => string | null) | null = null
let authTokenProvider: (() => string | null) | null = null

export function setHouseholdSlugProvider(provider: (() => string | null) | null) {
  householdSlugProvider = provider
}

// Expose current household slug for SDK convenience (temporary during migration)
export function getHouseholdSlug(): string | null {
  return householdSlugProvider ? householdSlugProvider() : null
}

export function setAuthTokenProvider(provider: (() => string | null) | null) {
  authTokenProvider = provider
}

export const api = createClient<paths>({
  baseUrl,
  fetch: (input: RequestInfo | URL, init?: RequestInit) => {
    const headers = new Headers(init?.headers || {})
    const slug = householdSlugProvider ? householdSlugProvider() : null
    if (slug) headers.set('X-Household-Slug', slug)
    const token = authTokenProvider ? authTokenProvider() : null
    if (token) headers.set('Authorization', `Bearer ${token}`)
    return globalThis.fetch(input, {
      credentials: 'include',
      ...init,
      headers,
    })
  },
})

// For endpoints not yet in OpenAPI, provide a raw fetch that preserves header injection and base URL behavior
export async function fetchApi(path: string, init?: RequestInit): Promise<Response> {
  const headers = new Headers(init?.headers || {})
  const slug = householdSlugProvider ? householdSlugProvider() : null
  if (slug) headers.set('X-Household-Slug', slug)
  const token = authTokenProvider ? authTokenProvider() : null
  if (token) headers.set('Authorization', `Bearer ${token}`)
  const url = baseUrl ? new URL(path, baseUrl).toString() : path
  return globalThis.fetch(url, {
    credentials: 'include',
    ...init,
    headers,
  })
}