import {z} from 'zod'

export type PageLimit = number;

export type PageCursor = string;

export type GetApiCustomerFamiliesArgs = {limit?: PageLimit | undefined, cursor?: PageCursor | undefined, search?: string | undefined, 'updated.gt'?: string | undefined, sort_by?: ('created' | 'updated') | undefined};

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

export const customerFamily = z.object({id: z.string(), name: z.string(), root_parent_customer_id: z.string(), member_count: z.number().int()});

export const pageCursor = z.string();

export const pagination = z.object({next_cursor: pageCursor.optional()});

export const getApiCustomerFamiliesResponse = z.object({customer_families: z.array(customerFamily), pagination: pagination.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
};

/**
 * Lists all customer families
 * 
 * GET /customer-families
 */
export const getApiCustomerFamilies = async (args: GetApiCustomerFamiliesArgs, options?: GetApiCustomerFamiliesOptions) => {
const {baseUrl = "https://api.rillet.com", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (args.limit != null) query.append("limit", String(args.limit))
if (args.cursor != null) query.append("cursor", String(args.cursor))
if (args.search != null) query.append("search", String(args.search))
if (args['updated.gt'] != null) query.append("updated.gt", String(args['updated.gt']))
if (args.sort_by != null) query.append("sort_by", String(args.sort_by))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/customer-families${query.size > 0 ? `?${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(getApiCustomerFamiliesResponse, await res.json())
};