import {z} from 'zod'

export type GetApiUserOptions = {baseUrl: string, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const accountStatus = z.object({is_admin: z.boolean(), expired: z.boolean(), stale: z.boolean(), has_jira: z.boolean(), has_ci: z.boolean(), has_deployments: z.boolean()});

export const user = z.object({accounts: z.record(z.string(), accountStatus).optional(), email: z.string().optional(), id: z.string(), impersonated_by: z.string().optional(), login: z.string(), native_id: z.string(), name: z.string().optional(), picture: z.string().optional(), updated: z.string().optional()});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * Show details about the calling user.
 * 
 * GET /user
 * 
 * Also accepts auth: apiKeyAuth
 */
export const getApiUser = async (options: GetApiUserOptions) => {
const {baseUrl, fetch: fetchFn = fetch, bearerAuth} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('accept', "application/json")

if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/user${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(user, await res.json())
};