import {z} from 'zod'

export type GetApiEmailsArgs = {page?: number | undefined, per_page?: number | undefined, cursor?: string | undefined, status?: ('queued' | 'sending' | 'deferred' | 'delivered' | 'bounced' | 'complained' | 'failed') | undefined, domain_id?: number | undefined, to?: string | undefined, tag?: string | undefined, date_from?: string | undefined, date_to?: string | undefined, provider?: string | undefined, country?: string | undefined, device?: string | undefined, from?: string | undefined, subject?: string | undefined};

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

export const spamSymbol = z.object({name: z.string(), score: z.number(), description: z.string().optional()});

export const email = z.object({id: z.number().int(), publicId: z.string(), domainId: z.number().int().nullable().optional(), fromAddress: z.string(), fromName: z.string().nullable().optional(), toAddresses: z.array(z.string()), ccAddresses: z.array(z.string()).nullable().optional(), bccAddresses: z.array(z.string()).nullable().optional(), replyTo: z.array(z.string()).nullable().optional(), subject: z.string().optional(), headers: z.object({}).nullable().optional(), tags: z.array(z.string()).nullable().optional(), status: z.enum(["queued", "sending", "deferred", "delivered", "bounced", "complained", "failed"]), testMode: z.boolean().optional(), recipientProvider: z.string().nullable().optional(), unsubscribeEnabled: z.boolean().optional(), attachmentCount: z.number().int().optional(), spamScore: z.string().nullable().optional(), spamWarnings: z.array(spamSymbol).nullable().optional(), scheduledAt: z.string().nullable().optional(), sentAt: z.string().nullable().optional(), createdAt: z.string()});

export const paginationMeta = z.object({page: z.number().int(), perPage: z.number().int(), total: z.number().int(), totalPages: z.number().int()});

export const getApiEmailsResponse = z.object({data: z.array(email), meta: paginationMeta});

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
};

/**
 * List emails
 * 
 * GET /emails
 * 
 * Also accepts auth: bearerOAuth
 */
export const getApiEmails = async (args: GetApiEmailsArgs, options?: GetApiEmailsOptions) => {
const {baseUrl = "https://api.poststack.dev", fetch: fetchFn = fetch, bearerApiKey} = options ?? {}

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

if (args.page != null) query.append("page", String(args.page))
if (args.per_page != null) query.append("per_page", String(args.per_page))
if (args.cursor != null) query.append("cursor", String(args.cursor))
if (args.status != null) query.append("status", String(args.status))
if (args.domain_id != null) query.append("domain_id", String(args.domain_id))
if (args.to != null) query.append("to", String(args.to))
if (args.tag != null) query.append("tag", String(args.tag))
if (args.date_from != null) query.append("date_from", String(args.date_from))
if (args.date_to != null) query.append("date_to", String(args.date_to))
if (args.provider != null) query.append("provider", String(args.provider))
if (args.country != null) query.append("country", String(args.country))
if (args.device != null) query.append("device", String(args.device))
if (args.from != null) query.append("from", String(args.from))
if (args.subject != null) query.append("subject", String(args.subject))
if (bearerApiKey !== undefined) headers.set('authorization', `Bearer ${bearerApiKey}`)

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