import type { PageServerLoad } from "./$types";
import { API_BASE_PREFIX, apiRequest } from "$lib/server/utils";
import type { ChangeLog, User, Collab } from "$lib/db-schema";

export const load: PageServerLoad = async ({ parent, fetch, params, url }) => {
  const userFilter = url.searchParams.get("logs_filter_user");
  const resourceFilter = url.searchParams.get("logs_filter_resource");
  const operationFilter = url.searchParams.get("logs_filter_operation");
  const currentPage = Number.parseInt(url.searchParams.get("logs_results_page") ?? "1");
  const resultOffset = (currentPage - 1) * 50;

  const searchParams = new URLSearchParams();

  const baseFetchUrl = `${API_BASE_PREFIX}/change_log?website_id=eq.${params.websiteId}&select=id,table_name,operation,tstamp,old_value,new_value,user_id,username&order=tstamp.desc`;

  if (userFilter && userFilter !== "all") {
    searchParams.append("username", `eq.${userFilter}`);
  }

  if (resourceFilter && resourceFilter !== "all") {
    searchParams.append("table_name", `eq.${resourceFilter}`);
  }

  if (operationFilter && operationFilter !== "all") {
    searchParams.append("operation", `eq.${operationFilter.toUpperCase()}`);
  }

  const constructedFetchUrl = `${baseFetchUrl}&${searchParams.toString()}&limit=50&offset=${resultOffset}`;

  const changeLog: (ChangeLog & { user: { username: User["username"] } })[] = (
    await apiRequest(fetch, constructedFetchUrl, "GET", { returnData: true })
  ).data;

  const resultChangeLogData = await apiRequest(fetch, constructedFetchUrl, "HEAD", {
    headers: {
      Prefer: "count=exact"
    },
    returnData: true
  });

  const resultChangeLogCount = Number(
    resultChangeLogData.data.headers.get("content-range")?.split("/").at(-1)
  );

  const collaborators: (Collab & { user: User })[] = (
    await apiRequest(
      fetch,
      `${API_BASE_PREFIX}/collab?website_id=eq.${params.websiteId}&select=*,user!user_id(*)&order=last_modified_at.desc,added_at.desc`,
      "GET",
      { returnData: true }
    )
  ).data;

  const { website, home } = await parent();

  return {
    changeLog,
    resultChangeLogCount,
    website,
    home,
    collaborators
  };
};