import { define, State } from "../../../utils.ts";
import { Context } from "fresh";
import { getUser } from "../../../services/userService.ts";
import { hashText } from "../../../services/stateMiddleware.ts";
import { User } from "../../../db/interfaces.ts";
import { createPublicId } from "../../../helpers.ts";

export const handler = define.handlers({
  async GET(ctx: Context<State>) {
    try {
      // Resolve user ID from authenticated state/session (cookie-backed)
      const userId = ctx.state.auth?.userId ?? ctx.state.data.user_id?.trim();

      if (!userId) {
        return new Response(
          JSON.stringify({ error: "User not authenticated" }),
          {
            status: 401,
            headers: { "Content-Type": "application/json" },
          },
        );
      }

      // Parse naunce parameter from URL
      const url = new URL(ctx.req.url);
      const naunce = url.searchParams.get("naunce") || "";

      // Get user profile from database
      const user = await getUser(userId) as User | null;

      if (!user) {
        return new Response(
          JSON.stringify({ error: "User profile not found" }),
          {
            status: 404,
            headers: { "Content-Type": "application/json" },
          },
        );
      }

      const responseUser: User = {
        ...user,
        id: await createPublicId(userId),
        started_on: 0,
        updated_on: 0,
      };

      // If naunce is provided, compare with user hash
      if (naunce) {
        const userHash = await hashText(JSON.stringify(responseUser));
        if (userHash === naunce) {
          console.log("User naunce matched");
          return new Response("", {
            status: 200,
            headers: { "Content-Type": "application/json" },
          });
        }
      }

      // Return user profile data
      return new Response(
        JSON.stringify(responseUser),
        {
          status: 200,
          headers: { "Content-Type": "application/json" },
        },
      );
    } catch (error) {
      console.error("Error getting user profile:", error);
      return new Response(
        JSON.stringify({ error: "Internal server error" }),
        {
          status: 500,
          headers: { "Content-Type": "application/json" },
        },
      );
    }
  },
});