import {z} from 'zod'

export type Uuid = string;

export type GetApiMessagesArgs = {id: Uuid};

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

export const messageDetails = z.object({id: z.string().max(36).optional(), source: z.string().max(255).optional(), destination: z.string().max(255).optional(), direction: z.enum(["MO", "MT"]).optional(), reference: z.string().max(255).optional(), content: z.string().max(5000).optional(), status: z.enum(["accepted", "queued", "submitted", "sent", "received", "blocked", "deficient", "frozen", "rejected", "failed", "dead", "expired"]).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 message details for an existing message
 * 
 * GET /messages
 */
export const getApiMessages = async (args: GetApiMessagesArgs, options?: GetApiMessagesOptions) => {
const {baseUrl = "https://api.sms.optus.com.au/rest/sms/v2", fetch: fetchFn = fetch, GatewayAuthorizer} = options ?? {}

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

if (args.id != null) query.append("id", String(args.id))
if (GatewayAuthorizer !== undefined) headers.set("Authorization", GatewayAuthorizer)

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(messageDetails, await res.json())
};