import { mergeDeltaRows } from "@govoplan/core-webui";
import type { CampaignJobsDeltaResponse, CampaignJobsResponse } from "../../../api/campaigns";

export function emptyCampaignJobsResponse(): CampaignJobsResponse {
  return {
    jobs: [],
    page: 1,
    page_size: 50,
    total: 0,
    total_unfiltered: 0,
    pages: 0,
    cursor: null,
    next_cursor: null,
    counts: {},
    filtered_counts: {},
    review: {}
  };
}

export function mergeCampaignJobsDelta(current: CampaignJobsResponse, response: CampaignJobsDeltaResponse): CampaignJobsResponse {
  if (response.full) return campaignJobsResponseFromDelta(response);
  return {
    ...campaignJobsResponseFromDelta(response),
    jobs: mergeDeltaRows(current.jobs, response.jobs, response.deleted, (row) => String(row.id ?? ""), {
      deletedResourceType: "campaign_job",
      sort: sortJobsByEntry
    }),
    cursor: response.cursor ?? current.cursor,
    next_cursor: response.next_cursor ?? current.next_cursor
  };
}

export function campaignJobsResponseFromDelta(response: CampaignJobsDeltaResponse): CampaignJobsResponse {
  return {
    jobs: response.jobs,
    page: response.page,
    page_size: response.page_size,
    total: response.total,
    total_unfiltered: response.total_unfiltered,
    pages: response.pages,
    cursor: response.cursor,
    next_cursor: response.next_cursor,
    counts: response.counts,
    filtered_counts: response.filtered_counts,
    review: response.review
  };
}

function sortJobsByEntry(left: Record<string, unknown>, right: Record<string, unknown>): number {
  const indexDelta = Number(left.entry_index ?? 0) - Number(right.entry_index ?? 0);
  if (indexDelta !== 0) return indexDelta;
  return String(left.id ?? "").localeCompare(String(right.id ?? ""));
}