import {z} from 'zod'

export type DeriveApiTokenRequest = {label?: string | undefined, scopes?: (Array<'trading' | 'account_creation' | 'delegated_signing'>) | undefined};

export type CreateApiAuthApiTokensDeriveArgs = {body: DeriveApiTokenRequest};

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

export const deriveApiTokenResponse = z.object({apiKey: z.string(), secret: z.string(), tokenId: z.string(), createdAt: z.string(), scopes: z.array(z.string()), profile: z.object({id: z.number().int().optional(), account: 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
};

/**
 * Derive scoped API token
 * 
 * POST /auth/api-tokens/derive
 */
export const createApiAuthApiTokensDerive = async (args: CreateApiAuthApiTokensDeriveArgs, options?: CreateApiAuthApiTokensDeriveOptions) => {
const {baseUrl = "https://api.limitless.exchange", fetch: fetchFn = fetch, HmacAuth} = options ?? {}

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

if (HmacAuth !== undefined) headers.set("lmts-api-key", HmacAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/auth/api-tokens/derive${query.size > 0 ? `?${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(deriveApiTokenResponse, await res.json())
};