import type { OpenClawPluginApi } from "openclaw/plugin-sdk";
import { resolvePolicy, type DirigentConfig } from "../rules.js";
import { onSpeakerDone, setWaitingForHuman } from "../turn-manager.js";
import { extractDiscordChannelId, extractDiscordChannelIdFromSessionKey } from "../channel-resolver.js";

type DebugConfig = {
  enableDebugLogs?: boolean;
  debugLogChannelIds?: string[];
};

type MessageSentDeps = {
  api: OpenClawPluginApi;
  baseConfig: DirigentConfig;
  policyState: { channelPolicies: Record<string, unknown> };
  sessionChannelId: Map<string, string>;
  sessionAccountId: Map<string, string>;
  sessionTurnHandled: Set<string>;
  ensurePolicyStateLoaded: (api: OpenClawPluginApi, config: DirigentConfig) => void;
  resolveDiscordUserId: (api: OpenClawPluginApi, accountId: string) => string | undefined;
  sendModeratorMessage: (
    botToken: string,
    channelId: string,
    content: string,
    logger: { info: (m: string) => void; warn: (m: string) => void },
  ) => Promise<void>;
};

export function registerMessageSentHook(deps: MessageSentDeps): void {
  const {
    api,
    baseConfig,
    policyState,
    sessionChannelId,
    sessionAccountId,
    sessionTurnHandled,
    ensurePolicyStateLoaded,
    resolveDiscordUserId,
    sendModeratorMessage,
  } = deps;

  api.on("message_sent", async (event, ctx) => {
    try {
      const key = ctx.sessionKey;
      const c = (ctx || {}) as Record<string, unknown>;
      const e = (event || {}) as Record<string, unknown>;

      api.logger.info(
        `dirigent: DEBUG message_sent RAW ctxKeys=${JSON.stringify(Object.keys(c))} eventKeys=${JSON.stringify(Object.keys(e))} ` +
          `ctx.channelId=${String(c.channelId ?? "undefined")} ctx.conversationId=${String(c.conversationId ?? "undefined")} ` +
          `ctx.accountId=${String(c.accountId ?? "undefined")} event.to=${String(e.to ?? "undefined")} ` +
          `session=${key ?? "undefined"}`,
      );

      let channelId = extractDiscordChannelId(c, e);
      if (!channelId && key) {
        channelId = sessionChannelId.get(key);
      }
      if (!channelId && key) {
        channelId = extractDiscordChannelIdFromSessionKey(key);
      }
      const accountId = (ctx.accountId as string | undefined) || (key ? sessionAccountId.get(key) : undefined);
      const content = (event.content as string) || "";

      api.logger.info(
        `dirigent: DEBUG message_sent RESOLVED session=${key ?? "undefined"} channelId=${channelId ?? "undefined"} accountId=${accountId ?? "undefined"} content=${content.slice(0, 100)}`,
      );

      if (!channelId || !accountId) return;

      const live = baseConfig as DirigentConfig & DebugConfig;
      ensurePolicyStateLoaded(api, live);
      const policy = resolvePolicy(live, channelId, policyState.channelPolicies as Record<string, any>);

      const trimmed = content.trim();
      const isNoReply = /^NO$/i.test(trimmed) || /^NO_REPLY$/i.test(trimmed);
      const lastChar = trimmed.length > 0 ? Array.from(trimmed).pop() || "" : "";
      const hasEndSymbol = !!lastChar && policy.endSymbols.includes(lastChar);
      const waitId = live.waitIdentifier || "👤";
      const hasWaitIdentifier = !!lastChar && lastChar === waitId;
      // Treat explicit NO/NO_REPLY keywords as no-reply.
      const wasNoReply = isNoReply;

      if (key && sessionTurnHandled.has(key)) {
        sessionTurnHandled.delete(key);
        api.logger.info(
          `dirigent: message_sent skipping turn advance (already handled in before_message_write) session=${key} channel=${channelId}`,
        );
        return;
      }

      if (hasWaitIdentifier) {
        setWaitingForHuman(channelId);
        api.logger.info(
          `dirigent: message_sent wait-for-human triggered channel=${channelId} from=${accountId}`,
        );
        return;
      }

      if (wasNoReply || hasEndSymbol) {
        const nextSpeaker = onSpeakerDone(channelId, accountId, wasNoReply);
        const trigger = wasNoReply ? "no_reply_keyword" : "end_symbol";
        const noReplyKeyword = wasNoReply ? (/^NO$/i.test(trimmed) ? "NO" : "NO_REPLY") : "";
        const keywordNote = wasNoReply ? ` keyword=${noReplyKeyword}` : "";
        api.logger.info(
          `dirigent: turn onSpeakerDone channel=${channelId} from=${accountId} next=${nextSpeaker ?? "dormant"} trigger=${trigger}${keywordNote}`,
        );

        if (wasNoReply && nextSpeaker && live.moderatorBotToken) {
          const nextUserId = resolveDiscordUserId(api, nextSpeaker);
          if (nextUserId) {
            const schedulingId = live.schedulingIdentifier || "➡️";
            const handoffMsg = `<@${nextUserId}>${schedulingId}`;
            await sendModeratorMessage(live.moderatorBotToken, channelId, handoffMsg, api.logger);
          } else {
            api.logger.warn(`dirigent: cannot resolve Discord userId for next speaker accountId=${nextSpeaker}`);
          }
        }
      }
    } catch (err) {
      api.logger.warn(`dirigent: message_sent hook failed: ${String(err)}`);
    }
  });
}