import {z} from 'zod'

export type SubsciptionStatus = 'subscribed' | 'unsubscribed' | 'non_subscribed';

export type CreateApiEmailContactsArgs = {body: {title?: string | undefined, first_name?: string | undefined, last_name?: string | undefined, email: string, phone?: string | undefined, subscription_status?: SubsciptionStatus | undefined, segment_id?: string | undefined}};

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

export const contact = z.object({type: z.string(), id: z.string(), attributes: z.object({title: z.string().optional(), firstName: z.string().optional(), lastName: z.string().optional(), email: z.string().optional()})});

export const createApiEmailContactsResponse = z.object({data: contact.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
};

/**
 * Create a new contact
 * 
 * POST /email/contacts
 */
export const createApiEmailContacts = async (args: CreateApiEmailContactsArgs, options?: CreateApiEmailContactsOptions) => {
const {baseUrl = "https://api.spectre.uk.com/v1", fetch: fetchFn = fetch, yourApiToken} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/email/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(createApiEmailContactsResponse, await res.json())
};