import {z} from 'zod'

export type CheckContactRequestBody = {blocking?: ('no_wait' | 'wait') | undefined, contacts: Array<string>};

export type CreateApiContactsArgs = {body: CheckContactRequestBody};

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

export const meta = z.object({version: z.string().optional(), api_status: z.enum(["deprecated", "experimental", "stable"]).optional()});

export const error = z.object({code: z.number().int().optional(), title: z.string().optional(), details: z.string().optional(), href: z.string().optional()});

export const checkContact = z.object({input: z.string().optional(), status: z.enum(["processing", "valid", "invalid"]).optional(), wa_id: z.string().optional()});

export const checkContactResponse = z.object({meta: meta.optional(), errors: z.array(error).optional(), contacts: z.array(checkContact).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
};

/**
 * Check-Contact
 * 
 * POST /contacts
 */
export const createApiContacts = async (args: CreateApiContactsArgs, options?: CreateApiContactsOptions) => {
const {baseUrl = "http://example.com/v1", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

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