import {z} from 'zod'

export type SendTemplateMessageContentTemplateDataHeaderDtoV2 = {type?: ('TEXT' | 'IMAGE' | 'DOCUMENT' | 'VIDEO') | undefined, mediaUrl?: string | undefined};

export type SendTemplateMessageContentTemplateDataBodyDtoV2 = {placeholders: Array<{[key: string]: string}>};

export type SendTemplateMessageContentTemplateDataButtonDto = {type: 'URL', parameter?: string | undefined};

export type SendTemplateMessageContentTemplateCarouselCardsDtoV2 = {cardIndex?: number | undefined, components?: ({header?: ({type?: ('IMAGE' | 'VIDEO') | undefined, mediaUrl?: string | undefined}) | undefined, body?: SendTemplateMessageContentTemplateDataBodyDtoV2 | undefined, buttons?: Array<SendTemplateMessageContentTemplateDataButtonDto> | undefined}) | undefined};

export type SendTemplateMessageContentTemplateDataDtoV2 = {header?: SendTemplateMessageContentTemplateDataHeaderDtoV2 | undefined, body?: SendTemplateMessageContentTemplateDataBodyDtoV2 | undefined, buttons?: Array<SendTemplateMessageContentTemplateDataButtonDto> | undefined, cards?: Array<SendTemplateMessageContentTemplateCarouselCardsDtoV2> | undefined};

export type SendTemplateMessageContentDtoV2 = {templateName: string, language: 'en' | 'en_US' | 'en_GB' | 'pt_BR' | 'es' | 'id', templateData?: SendTemplateMessageContentTemplateDataDtoV2 | undefined};

export type SendWhatsappTemplateMessageDtoV2 = {from?: string | undefined, to?: string | undefined, groupId?: string | undefined, content: SendTemplateMessageContentDtoV2, customData?: {[key: string]: string} | undefined};

export type SendWhatsappTemplateMessagesDtoV2 = {messages: Array<SendWhatsappTemplateMessageDtoV2>, byPassMediaUrlValidation?: boolean | undefined};

export type CreateApiV2WhatsappMessageTemplateArgs = {body: SendWhatsappTemplateMessagesDtoV2};

export type CreateApiV2WhatsappMessageTemplateOptions = {baseUrl?: string | undefined, basic?: string | undefined, fetch?: typeof fetch | undefined};

export const sendWhatsappTemplateMessageResponseV2 = z.object({messages: z.array(z.object({status: z.enum(["SENT", "FAILED", "ENQUEUED"]).optional(), recipient: z.string().optional(), messageId: z.string().optional(), errorMessage: 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
};

/**
 * Send Whatsapp Template Message (V2)
 * 
 * POST /v2/whatsapp/message/template
 */
export const createApiV2WhatsappMessageTemplate = async (args: CreateApiV2WhatsappMessageTemplateArgs, options?: CreateApiV2WhatsappMessageTemplateOptions) => {
const {baseUrl = "https://public.doubletick.io", fetch: fetchFn = fetch, basic} = options ?? {}

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

if (basic !== undefined) headers.set("Authorization", basic)

const url = `${baseUrl.replace(/\/+$/, '')}/v2/whatsapp/message/template${query.size > 0 ? `?${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(sendWhatsappTemplateMessageResponseV2, await res.json())
};