import {z} from 'zod'

export type GetApiStatsOutboundArgs = {'X-Postmark-Server-Token': string, tag?: string | undefined, fromdate?: string | undefined, todate?: string | undefined};

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

export const outboundOverviewStatsResponse = z.object({Sent: z.number().int().optional(), Bounced: z.number().int().optional(), SMTPAPIErrors: z.number().int().optional(), BounceRate: z.number().int().optional(), SpamComplaints: z.number().int().optional(), SpamComplaintsRate: z.number().int().optional(), Opens: z.number().int().optional(), UniqueOpens: z.number().int().optional(), Tracked: z.number().int().optional(), WithOpenTracking: z.number().int().optional(), WithLinkTracking: z.number().int().optional(), TotalClicks: z.number().int().optional(), UniqueLinksClicked: z.number().int().optional(), TotalTrackedLinksSent: z.number().int().optional(), WithClientRecorded: z.number().int().optional(), WithPlatformRecorded: z.number().int().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 outbound overview
 * 
 * GET /stats/outbound
 */
export const getApiStatsOutbound = async (args: GetApiStatsOutboundArgs, options: GetApiStatsOutboundOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args['X-Postmark-Server-Token'] != null) headers.set("X-Postmark-Server-Token", String(args['X-Postmark-Server-Token']))
if (args.tag != null) query.append("tag", String(args.tag))
if (args.fromdate != null) query.append("fromdate", String(args.fromdate))
if (args.todate != null) query.append("todate", String(args.todate))

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