import {z} from 'zod'

export type GetApiContactsArgs = {cursor?: string | undefined, waId?: string | undefined, phoneNumber?: string | undefined};

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

export const getApiContactsResponse = z.object({data: z.array(z.object({id: z.string(), waId: z.string().nullable(), waProfileName: z.string().nullable(), firstName: z.string().nullable(), lastName: z.string().nullable(), email: z.string().nullable(), phone: z.string().nullable(), occupation: z.string().nullable(), gender: z.string().nullable(), birthdate: z.string().nullable(), age: z.number().nullable(), notes: z.string().nullable(), tags: z.array(z.object({id: z.string(), name: z.string()})), createDate: z.string(), updateDate: z.string(), customProperties: z.record(z.string(), z.union([z.string(), z.number(), z.boolean()]).nullable())})), cursors: z.object({next: z.string().optional()}).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
};

/**
 * List contacts
 * 
 * GET /contacts
 */
export const getApiContacts = async (args: GetApiContactsArgs, options?: GetApiContactsOptions) => {
const {baseUrl = "https://messenger-public-api.cogfy.com", fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

if (args.cursor != null) query.append("cursor", String(args.cursor))
if (args.waId != null) query.append("waId", String(args.waId))
if (args.phoneNumber != null) query.append("phoneNumber", String(args.phoneNumber))
if (ApiKeyAuth !== undefined) headers.set("api-key", ApiKeyAuth)

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