import {z} from 'zod'

export type GetApiPolicyTenantLocatorTransactionsSegmentsSegmentLocatorArgs = {tenantLocator: string, segmentLocator: unknown};

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

export const elementResponse: z.ZodType<ElementResponse> = z.object({type: z.string(), locator: z.string(), parentLocator: z.string(), elements: z.array(z.lazy(() => elementResponse)).optional(), coverageTerms: z.record(z.string(), z.object({})).optional(), data: z.record(z.string(), z.object({})).optional(), staticLocator: z.string(), originalEffectiveTime: z.string(), category: z.enum(["product", "coverage", "exposure", "exposureGroup", "policyLine"]).optional()});

export const producerInfo = z.object({producerCode: z.string().optional(), producerCodeOfRecord: z.string().optional()});

export const segmentResponse = z.object({locator: z.string(), transactionLocator: z.string(), segmentType: z.enum(["coverage", "gap"]), startTime: z.string(), endTime: z.string(), element: elementResponse, duration: z.number(), basedOn: z.string().optional(), anonymizedAt: z.string().optional(), producerInfo: producerInfo.optional(), proxyPayerLocator: 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
};

/**
 * GET /policy/{tenantLocator}/transactions/segments/{segmentLocator}
 */
export const getApiPolicyTenantLocatorTransactionsSegmentsSegmentLocator = async (args: GetApiPolicyTenantLocatorTransactionsSegmentsSegmentLocatorArgs, options: GetApiPolicyTenantLocatorTransactionsSegmentsSegmentLocatorOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/policy/${encodeURIComponent(String(args.tenantLocator))}/transactions/segments/${encodeURIComponent(String(args.segmentLocator))}${query.size > 0 ? `?${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(segmentResponse, await res.json())
};