import {z} from 'zod'

export type AccessTokenCreationRequest = {client_id: string, duration_seconds: number | null, email: string | null, password: string | null, scopes: Array<'BACKEND' | 'CLIENT_ADMIN' | 'CLIENT_REPORT_DOWNLOAD' | 'CLIENT_SUPERUSER' | 'ONE_TIME' | 'PASSWORD_RESET' | 'UPDATE_PROFILE' | 'USER_SUPPORT' | 'VERIFIED_CONSUMER'> | null};

export type CreateApiV4TokensArgs = {body: AccessTokenCreationRequest};

export type CreateApiV4TokensOptions = {baseUrl?: string | undefined, HEADER?: string | undefined, fetch?: typeof fetch | undefined};

export const accessTokenResponse = z.object({access_token: z.string().optional(), client_id: z.string().optional(), expires_in: z.number().int().optional(), identity_id: z.string().optional(), person_id: z.string().optional(), scopes: z.array(z.enum(["BACKEND", "CLIENT_ADMIN", "CLIENT_REPORT_DOWNLOAD", "CLIENT_SUPERUSER", "ONE_TIME", "PASSWORD_RESET", "UPDATE_PROFILE", "USER_SUPPORT", "VERIFIED_CONSUMER"])).optional(), type: z.enum(["MANAGED", "RESOURCE", "USER"]).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
};

/**
 * Create access token
 * 
 * POST /v4/tokens
 * 
 * Also accepts auth: QUERY, COOKIE
 */
export const createApiV4Tokens = async (args: CreateApiV4TokensArgs, options?: CreateApiV4TokensOptions) => {
const {baseUrl = "https://api.extole.io", fetch: fetchFn = fetch, HEADER} = options ?? {}

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

if (HEADER !== undefined) headers.set("Authorization", HEADER)

const url = `${baseUrl.replace(/\/+$/, '')}/v4/tokens${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

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

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