feat(frontend): capture policy shows what each rule changes, rule card opens from folder and chat menus and can trash downloaded files, trash is paged

frontend/src/lib/format/policy.ts

@@ -0,0 +1,148 @@
+import type { CaptureToggles, PolicyScopeType } from "#lib/api/types.js";
+import { plural } from "#lib/format/shares.js";
+
+export type ToggleKey = keyof CaptureToggles;
+
+export const TOGGLE_LABELS: Record<ToggleKey, string> = {
+  backfill: "Бэкфилл",
+  media: "Медиа",
+  messages: "Сообщения",
+  presence: "Присутствие",
+  profile_history: "История профиля",
+  reactions: "Реакции",
+  self_destruct_media: "Исчезающие",
+  stories: "Сторис",
+  stt: "Расшифровка",
+  track_edits_deletes: "Правки, удаления",
+};
+
+export const TOGGLE_KEYS: ToggleKey[] = [
+  "messages",
+  "media",
+  "self_destruct_media",
+  "stt",
+  "reactions",
+  "track_edits_deletes",
+  "profile_history",
+  "stories",
+  "presence",
+  "backfill",
+];
+
+export const DEFAULT_LABELS: Partial<Record<PolicyScopeType, string>> = {
+  default_channel: "Каналы",
+  default_dm: "Личные чаты",
+  default_group: "Группы",
+};
+
+const PARENT_LABELS: Partial<Record<PolicyScopeType, string>> = {
+  default_channel: "у каналов",
+  default_dm: "у личных чатов",
+  default_group: "у групп",
+};
+
+const SHOWN_CHIPS = 3;
+const SHORT_LIST = 2;
+
+export interface Chip {
+  label: string;
+  sign: "plus" | "minus";
+}
+
+export function pickToggles(source: CaptureToggles): CaptureToggles {
+  return {
+    backfill: source.backfill,
+    media: source.media,
+    messages: source.messages,
+    presence: source.presence,
+    profile_history: source.profile_history,
+    reactions: source.reactions,
+    self_destruct_media: source.self_destruct_media,
+    stories: source.stories,
+    stt: source.stt,
+    track_edits_deletes: source.track_edits_deletes,
+  };
+}
+
+export function preset(only: ToggleKey[] | "all"): CaptureToggles {
+  const toggles = {} as CaptureToggles;
+  for (const key of TOGGLE_KEYS) {
+    toggles[key] = only === "all" || only.includes(key);
+  }
+  return toggles;
+}
+
+export function sameToggles(a: CaptureToggles, b: CaptureToggles): boolean {
+  return TOGGLE_KEYS.every((key) => a[key] === b[key]);
+}
+
+export function summary(toggles: CaptureToggles): string {
+  const on = TOGGLE_KEYS.filter((key) => toggles[key]);
+  const off = TOGGLE_KEYS.filter((key) => !toggles[key]);
+  if (off.length === 0) {
+    return "Всё";
+  }
+  if (on.length === 0) {
+    return "Ничего";
+  }
+  if (on.length === 1 && on[0] === "messages") {
+    return "Только сообщения";
+  }
+  if (off.length <= SHORT_LIST) {
+    const names = off.map((key) => TOGGLE_LABELS[key].toLowerCase());
+    return `Всё, кроме: ${names.join(", ")}`;
+  }
+  const names = on.slice(0, SHORT_LIST).map((key) => TOGGLE_LABELS[key]);
+  const rest = on.length - names.length;
+  return rest > 0 ? `${names.join(", ")} и ещё ${rest}` : names.join(", ");
+}
+
+export function parentLabel(
+  scopeType: PolicyScopeType,
+  title: string | null
+): string {
+  if (scopeType === "folder") {
+    return `у папки «${title ?? "без названия"}»`;
+  }
+  return PARENT_LABELS[scopeType] ?? "по умолчанию";
+}
+
+function settings(count: number): string {
+  return `${count} ${plural(count, "настройка", "настройки", "настроек")}`;
+}
+
+function collapse(
+  keys: ToggleKey[],
+  sign: Chip["sign"],
+  whole: string
+): Chip[] {
+  if (keys.length === 0) {
+    return [];
+  }
+  if (keys.length > SHOWN_CHIPS) {
+    return [{ label: whole, sign }];
+  }
+  return keys.map((key) => ({ label: TOGGLE_LABELS[key], sign }));
+}
+
+export function diffChips(
+  rule: CaptureToggles,
+  bases: CaptureToggles[]
+): Chip[] {
+  const plus = TOGGLE_KEYS.filter(
+    (key) => rule[key] && bases.some((base) => !base[key])
+  );
+  const minus = TOGGLE_KEYS.filter(
+    (key) => !rule[key] && bases.some((base) => base[key])
+  );
+  const allOn = TOGGLE_KEYS.every((key) => rule[key]);
+  const allOff = TOGGLE_KEYS.every((key) => !rule[key]);
+  return [
+    ...collapse(plus, "plus", allOn ? "Всё включено" : settings(plus.length)),
+    ...collapse(
+      minus,
+      "minus",
+      allOff ? "Всё выключено" : settings(minus.length)
+    ),
+  ];
+}