import {z} from 'zod'

export type CMAssetTypeType = 'ANCHORAGECUSTODY' | 'EXTERNAL';

export type CMAssetType = {assetType: string, type: CMAssetTypeType};

export type CMPriceSource = 'COINBASEPRO' | 'KRAKEN' | 'KAMINO' | 'BINANCE';

export type CMExposureAssetTrackingConfig = {asset: CMAssetType, liquidationPriority: number, notes?: string | undefined, priceSource?: CMPriceSource | undefined};

export type CMPriceStrategy = 'DEFAULT' | 'BID' | 'ASK' | 'MID' | 'LAST';

export type CMExposureType = 'LOAN';

export type CMCreateExposureRequest = {assetTrackingConfig: CMExposureAssetTrackingConfig, clientReferenceId?: string | undefined, collateralPackageID: string, priceStrategy: CMPriceStrategy, type: CMExposureType};

export type CreateApiCollateralManagementExposuresArgs = {'Api-Signature': string, 'Api-Timestamp': number, body: CMCreateExposureRequest};

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

export const cMCreateExposureResponse = z.object({exposureId: z.string()});

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 a new exposure
 * 
 * POST /collateral_management/exposures
 */
export const createApiCollateralManagementExposures = async (args: CreateApiCollateralManagementExposuresArgs, options?: CreateApiCollateralManagementExposuresOptions) => {
const {baseUrl = "https://api.anchorage-staging.com/v2", fetch: fetchFn = fetch, ApiAccessKey} = options ?? {}

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

if (args['Api-Signature'] != null) headers.set("Api-Signature", String(args['Api-Signature']))
if (args['Api-Timestamp'] != null) headers.set("Api-Timestamp", String(args['Api-Timestamp']))
if (ApiAccessKey !== undefined) headers.set("Api-Access-Key", ApiAccessKey)

const url = `${baseUrl.replace(/\/+$/, '')}/collateral_management/exposures${query.size > 0 ? `?${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(cMCreateExposureResponse, await res.json())
};