import {
  extractDiscordChannelId,
  extractDiscordChannelIdFromConversationMetadata,
  extractDiscordChannelIdFromSessionKey,
  extractUntrustedConversationInfo,
} from "./channel-resolver.js";

export type DerivedDecisionInput = {
  channel: string;
  channelId?: string;
  senderId?: string;
  content: string;
  conv: Record<string, unknown>;
};

export function deriveDecisionInputFromPrompt(params: {
  prompt: string;
  messageProvider?: string;
  sessionKey?: string;
  ctx?: Record<string, unknown>;
  event?: Record<string, unknown>;
}): DerivedDecisionInput {
  const { prompt, messageProvider, sessionKey, ctx, event } = params;
  const conv = extractUntrustedConversationInfo(prompt) || {};
  const channel = (messageProvider || "").toLowerCase();

  let channelId = extractDiscordChannelId(ctx || {}, event);
  if (!channelId) channelId = extractDiscordChannelIdFromSessionKey(sessionKey);
  if (!channelId) channelId = extractDiscordChannelIdFromConversationMetadata(conv);

  const senderId =
    (typeof conv.sender_id === "string" && conv.sender_id) ||
    (typeof conv.sender === "string" && conv.sender) ||
    undefined;

  return { channel, channelId, senderId, content: prompt, conv };
}