import {z} from 'zod'

export type CreateApiV1TokensArgs = {body: {account_name: string, user_name: string, password: string, grant_type: string, app_id: string, app_secret: string, device_id: string}};

export type CreateApiV1TokensOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const createApiV1TokensResponse = z.object({credentials: z.object({access_token: z.string().optional(), access_token_expiry: z.string().optional(), refresh_token: z.string().optional(), refresh_token_expiry: z.string().optional(), token_type: z.string().optional(), token_id: z.string().optional(), app_id: z.string().optional(), user_type: z.string().optional()}).optional(), login_policy_evaluation: z.object({allowlogin: z.boolean().optional(), policyaction: z.number().int().optional(), policyactiondata: z.unknown(), userid: z.unknown(), passwordexpiryreminder: z.boolean().optional()}).optional(), error: z.unknown()});

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
};

/**
 * Generate an access token
 * 
 * POST /v1/tokens
 */
export const createApiV1Tokens = async (args: CreateApiV1TokensArgs, options?: CreateApiV1TokensOptions) => {
const {baseUrl = "https://api.zenoti.com", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/v1/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(createApiV1TokensResponse, await res.json())
};