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import { STORAGE_KEYS } from "@/client/lib/constants";
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import { readVersionedStorageJson, writeVersionedStorageJson } from "@/client/lib/storage";
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const MAX_RECENTS = 16;
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const EMOJI_RECENTS_VERSION = 1;
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function parseEmojiList(value: unknown): string[] | null {
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  if (!Array.isArray(value)) return null;
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  return value.filter((item): item is string => typeof item === "string" && item.length > 0).slice(0, MAX_RECENTS);
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}
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export function readRecentEmojis(): string[] {
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  return readVersionedStorageJson(STORAGE_KEYS.EMOJI_RECENTS, EMOJI_RECENTS_VERSION, parseEmojiList) ?? [];
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}
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export function writeRecentEmoji(emoji: string): string[] {
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  if (!emoji) return readRecentEmojis();
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  const previous = readRecentEmojis().filter((item) => item !== emoji);
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  const next = [emoji, ...previous].slice(0, MAX_RECENTS);
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  writeVersionedStorageJson(STORAGE_KEYS.EMOJI_RECENTS, EMOJI_RECENTS_VERSION, next);
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  return next;
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}