import {z} from 'zod'

export type PatchApiPolicyTenantLocatorTransactionsLocatorUnderwriteArgs = {tenantLocator: string, locator: unknown, stateless?: boolean | undefined};

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

export const taskCreationResponse = z.object({taskLocator: z.string(), status: z.enum(["succeeded", "failed"])});

export const underwritingFlagResponse = z.object({locator: z.string(), level: z.enum(["info", "block", "decline", "reject", "approve"]), referenceType: z.enum(["quote", "transaction"]), referenceLocator: z.string(), note: z.string(), tag: z.string(), elementLocator: z.string().optional(), createdBy: z.string(), createdTime: z.string(), clearedBy: z.string(), clearedTime: z.string(), taskCreationResponse: taskCreationResponse});

export const validationItemResponse = z.object({elementType: z.string(), locator: z.string(), errors: z.array(z.string())});

export const validationResult = z.object({validationItems: z.array(validationItemResponse).optional(), success: z.boolean()});

export const transactionUnderwritingResponse: z.ZodType<TransactionUnderwritingResponse> = z.object({locator: z.string(), policyLocator: z.string(), transactionCategory: z.enum(["issuance", "change", "renewal", "cancellation", "continuation", "flatCancellation", "reinstatement", "reversal", "aggregate"]), transactionState: z.enum(["draft", "initialized", "validated", "earlyUnderwritten", "priced", "underwritten", "accepted", "issued", "underwrittenBlocked", "declined", "rejected", "refused", "discarded", "invalidated", "reversed"]), effectiveTime: z.string(), underwritingStatus: z.string(), underwritingFlags: z.array(underwritingFlagResponse).optional(), aggregatedTransactions: z.array(z.lazy(() => transactionUnderwritingResponse)).optional(), validationResult: validationResult.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
};

/**
 * PATCH /policy/{tenantLocator}/transactions/{locator}/underwrite
 */
export const patchApiPolicyTenantLocatorTransactionsLocatorUnderwrite = async (args: PatchApiPolicyTenantLocatorTransactionsLocatorUnderwriteArgs, options: PatchApiPolicyTenantLocatorTransactionsLocatorUnderwriteOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.stateless != null) query.append("stateless", String(args.stateless))

const url = `${baseUrl.replace(/\/+$/, '')}/policy/${encodeURIComponent(String(args.tenantLocator))}/transactions/${encodeURIComponent(String(args.locator))}/underwrite${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "PATCH", headers})

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

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