import type { ChannelOutboundAdapter, ChannelPollResult } from "../channels/plugins/types.js";
import type { OutboundDeliveryResult } from "../infra/outbound/deliver.js";

export type { ChannelOutboundAdapter } from "../channels/plugins/types.js";

export type ChannelSendRawResult = {
  ok: boolean;
  messageId?: string | null;
  error?: string | null;
};

export function attachChannelToResult<T extends object>(channel: string, result: T) {
  return {
    channel,
    ...result,
  };
}

export function attachChannelToResults<T extends object>(channel: string, results: readonly T[]) {
  return results.map((result) => attachChannelToResult(channel, result));
}

export function createEmptyChannelResult(
  channel: string,
  result: Partial<Omit<OutboundDeliveryResult, "channel" | "messageId">> & {
    messageId?: string;
  } = {},
): OutboundDeliveryResult {
  return attachChannelToResult(channel, {
    messageId: "",
    ...result,
  });
}

type MaybePromise<T> = T | Promise<T>;
type SendTextParams = Parameters<NonNullable<ChannelOutboundAdapter["sendText"]>>[0];
type SendMediaParams = Parameters<NonNullable<ChannelOutboundAdapter["sendMedia"]>>[0];
type SendPollParams = Parameters<NonNullable<ChannelOutboundAdapter["sendPoll"]>>[0];

export function createAttachedChannelResultAdapter(params: {
  channel: string;
  sendText?: (ctx: SendTextParams) => MaybePromise<Omit<OutboundDeliveryResult, "channel">>;
  sendMedia?: (ctx: SendMediaParams) => MaybePromise<Omit<OutboundDeliveryResult, "channel">>;
  sendPoll?: (ctx: SendPollParams) => MaybePromise<Omit<ChannelPollResult, "channel">>;
}): Pick<ChannelOutboundAdapter, "sendText" | "sendMedia" | "sendPoll"> {
  return {
    sendText: params.sendText
      ? async (ctx) => attachChannelToResult(params.channel, await params.sendText!(ctx))
      : undefined,
    sendMedia: params.sendMedia
      ? async (ctx) => attachChannelToResult(params.channel, await params.sendMedia!(ctx))
      : undefined,
    sendPoll: params.sendPoll
      ? async (ctx) => attachChannelToResult(params.channel, await params.sendPoll!(ctx))
      : undefined,
  };
}

export function createRawChannelSendResultAdapter(params: {
  channel: string;
  sendText?: (ctx: SendTextParams) => MaybePromise<ChannelSendRawResult>;
  sendMedia?: (ctx: SendMediaParams) => MaybePromise<ChannelSendRawResult>;
}): Pick<ChannelOutboundAdapter, "sendText" | "sendMedia"> {
  return {
    sendText: params.sendText
      ? async (ctx) => buildChannelSendResult(params.channel, await params.sendText!(ctx))
      : undefined,
    sendMedia: params.sendMedia
      ? async (ctx) => buildChannelSendResult(params.channel, await params.sendMedia!(ctx))
      : undefined,
  };
}

/** Normalize raw channel send results into the shape shared outbound callers expect. */
export function buildChannelSendResult(channel: string, result: ChannelSendRawResult) {
  return {
    channel,
    ok: result.ok,
    messageId: result.messageId ?? "",
    error: result.error ? new Error(result.error) : undefined,
  };
}