import {z} from 'zod'

export type CmContactType = 'email' | 'phone_sms' | 'phone_call';

export type CmConsentContact = {contact_value: string, opt_in: boolean, consent_timestamp: string};

export type CmStoreConsentsRequest = {contacts: Array<CmConsentContact>};

export type CreateApiContactTypeConsentsArgs = {contact_type: CmContactType, client_key: string, body: CmStoreConsentsRequest};

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

export const cmEmptySuccessResponse = z.object({});

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
};

/**
 * Store consents in bulk
 * 
 * POST /{contact_type}/consents
 */
export const createApiContactTypeConsents = async (args: CreateApiContactTypeConsentsArgs, options?: CreateApiContactTypeConsentsOptions) => {
const {baseUrl = "https://api.fullpath.com/consent-management", fetch: fetchFn = fetch, Bearer} = options ?? {}

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

if (args.client_key != null) query.append("client_key", String(args.client_key))
if (Bearer !== undefined) headers.set('authorization', `Bearer ${Bearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/${encodeURIComponent(String(args.contact_type))}/consents${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(cmEmptySuccessResponse, await res.json())
};