import {z} from 'zod'

export type GetApiMessagesInboundArgs = {'X-Postmark-Server-Token': string, count: number, offset: number, recipient?: string | undefined, fromemail?: string | undefined, subject?: string | undefined, mailboxhash?: string | undefined, tag?: string | undefined, status?: ('blocked' | 'processed' | 'queued' | 'failed' | 'scheduled') | undefined, todate?: string | undefined, fromdate?: string | undefined};

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

export const emailNameAddressPair = z.object({Name: z.string().optional(), Email: z.string().optional()});

export const attachment = z.object({Name: z.string().optional(), Content: z.string().optional(), ContentType: z.string().optional(), ContentID: z.string().optional()});

export const attachmentCollection = z.array(attachment);

export const inboundMessageDetail = z.object({From: z.string().optional(), FromName: z.string().optional(), FromFull: z.object({Email: z.string().optional(), Name: z.string().optional()}).optional(), To: z.string().optional(), ToFull: z.array(emailNameAddressPair).optional(), Cc: z.string().optional(), CcFull: z.array(emailNameAddressPair).optional(), ReplyTo: z.string().optional(), OriginalRecipient: z.string().optional(), Subject: z.string().optional(), Date: z.string().optional(), MailboxHash: z.string().optional(), Tag: z.string().optional(), Attachments: attachmentCollection.optional(), MessageID: z.string().optional(), Status: z.string().optional()});

export const inboundSearchResponse = z.object({TotalCount: z.number().int().optional(), InboundMessages: z.array(inboundMessageDetail).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
};

/**
 * Inbound message search
 * 
 * GET /messages/inbound
 */
export const getApiMessagesInbound = async (args: GetApiMessagesInboundArgs, options: GetApiMessagesInboundOptions) => {
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.count != null) query.append("count", String(args.count))
if (args.offset != null) query.append("offset", String(args.offset))
if (args.recipient != null) query.append("recipient", String(args.recipient))
if (args.fromemail != null) query.append("fromemail", String(args.fromemail))
if (args.subject != null) query.append("subject", String(args.subject))
if (args.mailboxhash != null) query.append("mailboxhash", String(args.mailboxhash))
if (args.tag != null) query.append("tag", String(args.tag))
if (args.status != null) query.append("status", String(args.status))
if (args.todate != null) query.append("todate", String(args.todate))
if (args.fromdate != null) query.append("fromdate", String(args.fromdate))

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