fix(ui): восстанавливать поиск и фильтры BGP из URL

hooks/use-bgp-url-state.ts

@@ -0,0 +1,49 @@
+"use client"
+
+import { useEffect, useMemo, useState } from "react"
+import { useSearchParams } from "next/navigation"
+import type { FilterQuery } from "@/components/reui/filters/filters-types"
+import { encodeBgpQuery, patchBgpUrl, readBgpUrl, validateBgpQuery, type BgpTypeFilter, type BgpStateFilter } from "@/lib/data-filters/bgp-url-state"
+
+export function useBgpUrlState() {
+  const params = useSearchParams()
+  const raw = params.toString()
+  const state = useMemo(() => readBgpUrl(new URLSearchParams(raw)), [raw])
+  const filterKey = params.get("filters")
+  const [draft, setDraft] = useState<{ key: string | null; query: FilterQuery; error: string | null } | null>(null)
+  useEffect(() => {
+    const reset = () => setDraft(null)
+    window.addEventListener("popstate", reset)
+    return () => window.removeEventListener("popstate", reset)
+  }, [])
+  function write(changes: Record<string, string | null>, replace = false) {
+    const href = patchBgpUrl(new URLSearchParams(window.location.search), changes)
+    if (href === window.location.pathname + window.location.search) return
+    if (replace) window.history.replaceState(null, "", href)
+    else window.history.pushState(null, "", href)
+  }
+  function setFilters(query: FilterQuery) {
+    if (validateBgpQuery(query) === "draft") { setDraft({ key: filterKey, query, error: null }); return }
+    try {
+      const encoded = encodeBgpQuery(query)
+      setDraft(null)
+      write({ filters: encoded })
+    } catch (error) {
+      setDraft({ key: filterKey, query, error: error instanceof Error ? error.message : "Некорректный фильтр." })
+    }
+  }
+  const currentDraft = draft?.key === filterKey ? draft : null
+  return {
+    search: state.search,
+    typeFilter: state.type,
+    stateFilter: state.state,
+    filters: currentDraft?.query ?? state.query,
+    error: state.error ?? currentDraft?.error ?? null,
+    hasFilters: params.has("q") || params.has("type") || params.has("state") || params.has("filters") || currentDraft !== null,
+    setSearch: (value: string) => write({ q: value }, true),
+    setTypeFilter: (value: BgpTypeFilter) => write({ type: value === "all" ? null : value }),
+    setStateFilter: (value: BgpStateFilter) => write({ state: value === "all" ? null : value }),
+    setFilters,
+    reset: () => { setDraft(null); write({ q: null, type: null, state: null, filters: null }) },
+  }
+}