import {z} from 'zod'

export type GetApiMessagesSendArgs = {to: string, body: string, 'deduplication-id'?: number | undefined};

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

export const message = z.object({id: z.string(), type: z.enum(["SENT", "RECEIVED"]), from: z.string().optional(), to: z.string(), body: z.string(), encoding: z.enum(["TEXT", "UNICODE", "BINARY"]).optional(), protocolId: z.number().int().optional(), messageClass: z.number().int().optional(), numberOfParts: z.number().int().optional(), creditCost: z.number().optional(), submission: z.object({id: z.string(), date: z.string()}).optional(), status: z.object({id: z.string(), type: z.enum(["ACCEPTED", "SCHEDULED", "SENT", "DELIVERED", "UNKNOWN", "FAILED"]), subtype: z.enum(["EXPIRED", "HANDSET_ERROR", "BLOCKED", "NOT_SENT"]).optional()}), relatedSentMessageId: z.string().optional(), userSuppliedId: z.string().optional()});

export const getApiMessagesSendResponse = z.array(message);

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
};

/**
 * Send message by simple GET or POST
 * 
 * GET /messages/send
 */
export const getApiMessagesSend = async (args: GetApiMessagesSendArgs, options?: GetApiMessagesSendOptions) => {
const {baseUrl = "https://api.bulksms.com/v1", fetch: fetchFn = fetch, basicAuth} = options ?? {}

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

if (args.to != null) query.append("to", String(args.to))
if (args.body != null) query.append("body", String(args.body))
if (args['deduplication-id'] != null) query.append("deduplication-id", String(args['deduplication-id']))
if (basicAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${basicAuth.username}:${basicAuth.password}`)}`)

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