import { toast } from "sonner";
import { useClearImageCache, useClearTmdbCache, useImageCache, useTmdbCache } from "~/api/cache.ts";
import { useUpdateSettings } from "~/api/settings.ts";
import { StatusBadge } from "~/components/console/status-badge.tsx";
import { Button } from "~/components/ui/button.tsx";
import { errorMessage } from "~/lib/api.ts";
import { str } from "./resource-section.tsx";
import { type CardSpec, n, SettingsCard, SettingsGate } from "./settings-card.tsx";

// 元数据:TMDB API Key(只写,存 secret)与 Base URL

const TMDB_CARD: CardSpec = {
  anchor: "tmdb",
  title: "TMDB",
  description: "留空时用环境变量 TMDB_API_KEY / TMDB_ACCESS_TOKEN / TMDB_BASE_URL。",
  fields: [
    {
      name: "metadata.tmdbApiKey",
      label: "API Key",
      kind: "password",
      hint: "v3 API Key 或 v4 Read Access Token；留空不修改",
      wide: true,
    },
    {
      name: "metadata.tmdbBaseUrl",
      label: "Base URL",
      kind: "url",
      placeholder: "https://api.themoviedb.org",
      hint: "自建反代时填写；留空用官方地址",
      wide: true,
    },
  ],
  fromSettings: (s) => ({ "metadata.tmdbApiKey": "", "metadata.tmdbBaseUrl": s.metadata.tmdbBaseUrl ?? "" }),
  toPatch: (v) => ({
    metadata: {
      tmdbBaseUrl: str(v["metadata.tmdbBaseUrl"]) || null,
      ...(str(v["metadata.tmdbApiKey"]) ? { tmdbApiKey: str(v["metadata.tmdbApiKey"]) } : {}),
    },
  }),
  extra: (s) => <TmdbKeyStatus saved={!!s.metadata.tmdbApiKeySecretRef} />,
};

function TmdbKeyStatus({ saved }: { saved: boolean }) {
  const update = useUpdateSettings();
  return (
    <div className="mb-2 flex flex-wrap items-center gap-2">
      <StatusBadge tone={saved ? "success" : "neutral"}>{saved ? "API Key 已保存" : "未保存 API Key"}</StatusBadge>
      {saved ? (
        <Button
          type="button"
          variant="ghost"
          size="xs"
          className="hover:text-destructive"
          disabled={update.isPending}
          onClick={async () => {
            try {
              await update.mutateAsync({ metadata: { tmdbApiKey: null } });
              toast.success("TMDB API Key 已清除");
            } catch (err) {
              toast.error(errorMessage(err, "清除失败"));
            }
          }}
        >
          清除
        </Button>
      ) : null}
    </div>
  );
}

// TMDB 缓存(对照 MP:META_CACHE_EXPIRE / CONF.tmdb / EMPTY_RESULT_CACHE_TTL)
const TMDB_CACHE_CARD: CardSpec = {
  anchor: "tmdb-cache",
  title: "TMDB 缓存",
  description: "请求响应与识别结果存在数据库里，三个进程共用。超过条数上限时删最久未用的条目。",
  fields: [
    { name: "cache.tmdbTtlHours", label: "有效期（小时）", kind: "number" },
    { name: "cache.tmdbMaxSize", label: "条数上限", kind: "number", hint: "请求缓存和识别缓存各自计数" },
    {
      name: "cache.emptyResultTtlSec",
      label: "空结果有效期（秒）",
      kind: "number",
      hint: "搜索无结果、未识别时的短缓存",
    },
  ],
  fromSettings: (s) => ({
    "cache.tmdbTtlHours": n(s.cache.tmdbTtlHours),
    "cache.tmdbMaxSize": n(s.cache.tmdbMaxSize),
    "cache.emptyResultTtlSec": n(s.cache.emptyResultTtlSec),
  }),
  toPatch: (v) => ({
    cache: {
      tmdbTtlHours: Number(v["cache.tmdbTtlHours"]),
      tmdbMaxSize: Number(v["cache.tmdbMaxSize"]),
      emptyResultTtlSec: Number(v["cache.emptyResultTtlSec"]),
    },
  }),
  extra: () => <TmdbCacheStatus />,
};

function TmdbCacheStatus() {
  const q = useTmdbCache();
  const clear = useClearTmdbCache();
  const c = q.data?.counts;
  return (
    <div className="mb-2 flex flex-wrap items-center gap-2 text-meta text-muted-foreground">
      <span className="tabular-nums">
        {c ? `识别 ${c.recognize} 条 · 请求 ${c.request} 条 · 上限各 ${q.data?.maxSize} 条` : "读取中…"}
      </span>
      <Button
        type="button"
        variant="ghost"
        size="xs"
        className="hover:text-destructive"
        disabled={clear.isPending}
        onClick={async () => {
          try {
            const r = await clear.mutateAsync();
            toast.success(`已清空 ${r.deleted} 条 TMDB 缓存`);
          } catch (err) {
            toast.error(errorMessage(err, "清空失败"));
          }
        }}
      >
        清空
      </Button>
    </div>
  );
}

// 图片代理与缓存(对照 MP GLOBAL_IMAGE_CACHE / GLOBAL_IMAGE_CACHE_DAYS)
const IMAGES_CARD: CardSpec = {
  anchor: "images",
  title: "图片代理与缓存",
  description: "海报经服务端从 TMDB 取回。开启缓存后保存到数据目录，下次直接读取。",
  fields: [
    { name: "cache.globalImageCache", label: "缓存图片", kind: "switch" },
    { name: "cache.globalImageCacheDays", label: "保留天数", kind: "number", hint: "超过天数的图片每天清理一次" },
  ],
  fromSettings: (s) => ({
    "cache.globalImageCache": s.cache.globalImageCache,
    "cache.globalImageCacheDays": n(s.cache.globalImageCacheDays),
  }),
  toPatch: (v) => ({
    cache: {
      globalImageCache: v["cache.globalImageCache"] === true,
      globalImageCacheDays: Number(v["cache.globalImageCacheDays"]),
    },
  }),
  extra: () => <ImageCacheStatus />,
};

function ImageCacheStatus() {
  const q = useImageCache();
  const clear = useClearImageCache();
  const d = q.data;
  return (
    <div className="mb-2 flex flex-wrap items-center gap-2 text-meta text-muted-foreground">
      <span className="tabular-nums">
        {d ? `${d.files} 张 · ${(d.usedBytes / 1024 / 1024).toFixed(1)} MiB` : "读取中…"}
      </span>
      <Button
        type="button"
        variant="ghost"
        size="xs"
        className="hover:text-destructive"
        disabled={clear.isPending}
        onClick={async () => {
          try {
            const r = await clear.mutateAsync();
            toast.success(`已删除 ${r.deleted} 张缓存图片`);
          } catch (err) {
            toast.error(errorMessage(err, "清空失败"));
          }
        }}
      >
        清空
      </Button>
    </div>
  );
}

export function MetadataSection() {
  return (
    <SettingsGate>
      {(s) => (
        <>
          <SettingsCard section="metadata" spec={TMDB_CARD} settings={s} />
          <SettingsCard section="metadata" spec={TMDB_CACHE_CARD} settings={s} />
          <SettingsCard section="metadata" spec={IMAGES_CARD} settings={s} />
        </>
      )}
    </SettingsGate>
  );
}