import type { MatchmakerLogSource } from "@/lib/matchmaker-log-source";
import { DEFAULT_LEDGER_PAGE_SIZE } from "@/lib/ledger-table-view";

export type AdminDashboardTab =
  | "dashboard"
  | "players"
  | "matches"
  | "matchmaker"
  | "ledger";

export type DashboardUrlQuery = {
  tab: AdminDashboardTab;
  highlightId: string | null;
  participantRaw: string | null;
  editId?: number | null;
  saveError?: boolean;
  /** Ledger: failed system supply action */
  supplyError?: boolean;
  /** When tab is matchmaker: `raw` selects matchmaker.log; omit or processed → history.log */
  matchmakerSource?: MatchmakerLogSource | null;
  /** Ledger tab: UTC date-only bounds (`lfrom` / `lto` query params). */
  ledgerFrom?: string | null;
  ledgerTo?: string | null;
  ledgerPage?: number | null;
  /** Ledger rows per page (`lsize`); omitted from URL when equal to default. */
  ledgerPageSize?: number | null;
  ledgerSort?: string | null;
  ledgerOrder?: "asc" | "desc" | null;
};

/** Build `/?…` for dashboard tabs, filters, and optional edit / error flags. */
export function buildDashboardHref(q: DashboardUrlQuery): string {
  const p = new URLSearchParams();
  if (q.tab === "matches") p.set("tab", "matches");
  else if (q.tab === "players") p.set("tab", "players");
  else if (q.tab === "matchmaker") p.set("tab", "matchmaker");
  else if (q.tab === "ledger") p.set("tab", "ledger");
  if (q.highlightId) p.set("highlight", q.highlightId);
  if (q.participantRaw) p.set("participant", q.participantRaw);
  if (q.tab === "matchmaker" && q.matchmakerSource === "raw") {
    p.set("mklog", "raw");
  }
  if (q.tab === "ledger") {
    if (q.ledgerFrom) p.set("lfrom", q.ledgerFrom);
    if (q.ledgerTo) p.set("lto", q.ledgerTo);
    if (
      q.ledgerPage != null &&
      Number.isFinite(q.ledgerPage) &&
      Math.trunc(q.ledgerPage) > 1
    ) {
      p.set("lpage", String(Math.trunc(q.ledgerPage)));
    }
    if (q.ledgerSort) p.set("lsort", q.ledgerSort);
    if (q.ledgerOrder) p.set("lorder", q.ledgerOrder);
    if (
      q.ledgerPageSize != null &&
      Number.isFinite(q.ledgerPageSize) &&
      Math.trunc(q.ledgerPageSize) !== DEFAULT_LEDGER_PAGE_SIZE
    ) {
      p.set("lsize", String(Math.trunc(q.ledgerPageSize)));
    }
  }
  if (q.editId != null && Number.isFinite(q.editId)) {
    p.set("edit", String(q.editId));
  }
  if (q.saveError) p.set("saveError", "1");
  if (q.supplyError) p.set("supplyErr", "1");
  const s = p.toString();
  return s ? `/?${s}` : "/";
}