import {z} from 'zod'

export type GetApiApiV2StatsMessagingArgs = {by?: ('off' | 'day' | 'month' | 'year') | undefined, start?: number | undefined, end?: number | undefined};

export type GetApiApiV2StatsMessagingOptions = {baseUrl?: string | undefined, BasicAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const messagingStatItem = z.object({replyRate: z.number().nullable(), date: z.string().nullable(), deliveryRate: z.number().nullable(), costs: z.number().nullable(), messagesReceived: z.number().int().nullable(), messagesSentDelivered: z.number().int().nullable(), messagesSentAccepted: z.number().int().nullable(), messagesSentBuffered: z.number().int().nullable(), messagesSentFailed: z.number().int().nullable(), messagesSentRejected: z.number().int().nullable(), messagesSentParts: z.number().int().nullable()});

export const getMessagingStatResponse = z.array(messagingStatItem);

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 messaging statistics
 * 
 * GET /api/v2/stats/messaging
 */
export const getApiApiV2StatsMessaging = async (args: GetApiApiV2StatsMessagingArgs, options?: GetApiApiV2StatsMessagingOptions) => {
const {baseUrl = "https://rest.textmagic.com", fetch: fetchFn = fetch, BasicAuth} = options ?? {}

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

if (args.by != null) query.append("by", String(args.by))
if (args.start != null) query.append("start", String(args.start))
if (args.end != null) query.append("end", String(args.end))
if (BasicAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${BasicAuth.username}:${BasicAuth.password}`)}`)

const url = `${baseUrl.replace(/\/+$/, '')}/api/v2/stats/messaging${query.size > 0 ? `?${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(getMessagingStatResponse, await res.json())
};