import {
  ICreateSessionResponse,
  IUpdateSessionRequest,
} from "@/entities/session/types";
import {
  createSession as createSessionApi,
  updateSession as updateSessionApi,
} from "@/entities/session/actions";
import { getClientTimezone } from "@/shared/utils/locales";
import { parseQueryParams } from "@/shared/utils/url";
import { useCallback, useMemo, useState } from "react";
import { setSessionIdToCookie } from "@/entities/session/serverActions";
import { metricService } from "@/services/analytics/metricService";

// TODO
const locale = "en";

interface IUseSessionProps {
  funnelId: string;
  googleAnalyticsId?: string;
}

export const useSession = ({ funnelId, googleAnalyticsId }: IUseSessionProps) => {
  const localStorageKey = `${funnelId}_sessionId`;
  const sessionId =
    typeof window === "undefined" ? "" : localStorage.getItem(localStorageKey);

  const timezone = getClientTimezone();

  const [isError, setIsError] = useState(false);

  const setSessionId = useCallback(
    async (sessionId: string) => {
      localStorage.setItem(localStorageKey, sessionId);
      localStorage.setItem("activeSessionId", sessionId);
      await setSessionIdToCookie("activeSessionId", sessionId);
    },
    [localStorageKey]
  );

  const createSession =
    useCallback(async (): Promise<ICreateSessionResponse> => {
      if (typeof window === "undefined") {
        return {
          sessionId: "",
          status: "error",
        };
      }
      if (sessionId?.length) {
        setSessionId(sessionId);
        return {
          sessionId,
          status: "old",
        };
      }
      try {
        const utm = parseQueryParams();
        const sessionParams = {
          feature: "stripe",
          locale,
          timezone,
          source: funnelId,
          sign: false,
          utm,
          domain: window.location.hostname,
        };
        console.log("Creating session with parameters:", sessionParams);
        const sessionFromServer = await createSessionApi(sessionParams);
        console.log("Session creation response:", sessionFromServer);
        if (
          sessionFromServer?.sessionId?.length &&
          sessionFromServer?.status === "success"
        ) {
          await setSessionId(sessionFromServer.sessionId);
          
          // ✅ Отправляем sessionId в userParams (параметры посетителя)
          metricService.userParams({
            sessionId: sessionFromServer.sessionId,
          });
          
          // ✅ Отправляем контекст визита в params (параметры визита)
          metricService.sendVisitContext({
            sessionId: sessionFromServer.sessionId,
            funnelId,
            gaId: googleAnalyticsId,
          });
          
          return sessionFromServer;
        }
        console.error(
          "Session creation failed - invalid response:",
          sessionFromServer
        );
        setIsError(true);
        return {
          status: "error",
          sessionId: "",
        };
      } catch (error) {
        console.error("Session creation failed with error:", error);
        setIsError(true);
        return {
          status: "error",
          sessionId: "",
        };
      }
    }, [sessionId, timezone, setSessionId, funnelId, googleAnalyticsId]);

  const updateSession = useCallback(
    async (data: IUpdateSessionRequest["data"]) => {
      try {
        let _sessionId = sessionId;
        if (!_sessionId) {
          const session = await createSession();
          _sessionId = session.sessionId;
        }
        const result = await updateSessionApi({
          sessionId: _sessionId,
          data: {
            feature: "stripe",
            ...data,
          },
        });
        return result;
      } catch (error) {
        console.log(error);
      }
    },
    [sessionId, createSession]
  );

  const deleteSession = useCallback(async () => {
    if (typeof window === "undefined") {
      return;
    }
    localStorage.removeItem(localStorageKey);
  }, [localStorageKey]);

  return useMemo(
    () => ({
      session: sessionId,
      isError,
      createSession,
      updateSession,
      deleteSession,
    }),
    [sessionId, isError, createSession, deleteSession, updateSession]
  );
};