import {z} from 'zod'

export type GetApiMessagesArgs = {'Accept-Language'?: string | undefined, count?: number | undefined, offset?: number | undefined, sort_field?: string | undefined, sort_direction?: ('ASC' | 'DESC') | undefined, customer_id?: string | undefined, contact?: string | undefined, communication_channel_id?: string | undefined, send_time_from?: string | undefined, send_time_to?: string | undefined};

export type GetApiMessagesOptions = {baseUrl?: string | undefined, bearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const parameter = z.object({parameter_name: z.string(), value: z.string()});

export const attachment = z.object({upload_method: z.enum(["url", "base64"]), file_data: z.string(), cache_for: z.number().int().optional()});

export const message = z.object({message_id: z.string().optional(), status: z.union([z.literal(0), z.literal(1), z.literal(-1), z.literal(-2), z.literal(2), z.literal(4), z.literal(5)]).optional(), message_template_id: z.string(), customer_id: z.string(), contact: z.string().optional(), title: z.string().optional(), send_time: z.string().optional(), opened_time: z.string().optional(), mail_client_user_agent: z.string().optional(), mail_client_language: z.string().optional(), communication_channel_id: z.union([z.literal(1), z.literal(2), z.literal(4), z.literal(5)]), message_data: z.array(parameter).optional(), attachments: z.array(attachment).optional(), last_change: z.string().optional()});

export const getApiMessagesResponse = z.object({data: z.object({messages: z.array(message).optional(), total_items: z.number().int().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
};

/**
 * Get all messages
 * 
 * GET /messages
 * 
 * Also accepts auth: basicAuth
 */
export const getApiMessages = async (args: GetApiMessagesArgs, options?: GetApiMessagesOptions) => {
const {baseUrl = "https://sandbox.crmcarecloud.com/webservice/rest-api/enterprise-interface/v1.0", fetch: fetchFn = fetch, bearerAuth} = options ?? {}

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

if (args['Accept-Language'] != null) headers.set("Accept-Language", String(args['Accept-Language']))
if (args.count != null) query.append("count", String(args.count))
if (args.offset != null) query.append("offset", String(args.offset))
if (args.sort_field != null) query.append("sort_field", String(args.sort_field))
if (args.sort_direction != null) query.append("sort_direction", String(args.sort_direction))
if (args.customer_id != null) query.append("customer_id", String(args.customer_id))
if (args.contact != null) query.append("contact", String(args.contact))
if (args.communication_channel_id != null) query.append("communication_channel_id", String(args.communication_channel_id))
if (args.send_time_from != null) query.append("send_time_from", String(args.send_time_from))
if (args.send_time_to != null) query.append("send_time_to", String(args.send_time_to))
if (bearerAuth !== undefined) headers.set('authorization', `Bearer ${bearerAuth}`)

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