import {z} from 'zod'

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

export type GetApiContactTypeConsentsArgs = {contact_type: CmContactType, client_key: string, from: string, to: string, page?: number | undefined, per_page?: number | undefined};

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

export const cmConsentListItem = z.object({contact_value: z.string(), opt_in: z.boolean().nullable(), consent_timestamp: z.string()});

export const cmPaginationMeta = z.object({current_page: z.number().int(), per_page: z.number().int(), total: z.number().int(), last_page: z.number().int()});

export const cmListConsentsResponse = z.object({data: z.array(cmConsentListItem), meta: cmPaginationMeta});

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 consents in a date window
 * 
 * GET /{contact_type}/consents
 */
export const getApiContactTypeConsents = async (args: GetApiContactTypeConsentsArgs, options?: GetApiContactTypeConsentsOptions) => {
const {baseUrl = "https://api.fullpath.com/consent-management", fetch: fetchFn = fetch, Bearer} = options ?? {}

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

if (args.client_key != null) query.append("client_key", String(args.client_key))
if (args.from != null) query.append("from", String(args.from))
if (args.to != null) query.append("to", String(args.to))
if (args.page != null) query.append("page", String(args.page))
if (args.per_page != null) query.append("per_page", String(args.per_page))
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: "GET", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(cmListConsentsResponse, await res.json())
};