import { DEFAULT_SETTINGS } from "@umt/contracts";
import { secretPatch } from "~/lib/secret.ts";
import { str } from "./resource-section.tsx";
import { type CardSpec, SettingsCard, SettingsGate } from "./settings-card.tsx";

// 元数据:TMDB 接入(API Key 只写,存 secret;Base URL)与语言回退、特别篇。缓存在「缓存」分区,资源识别在「获取」分区。

const DEFAULT_LANGUAGES = DEFAULT_SETTINGS.metadata.languages;

/** "zh-CN, zh_sg en" → ["zh-CN","zh-SG","en"];不合法的项丢弃,全空回缺省 */
function parseLanguages(v: string): string[] {
  const out = v
    .split(/[,，、\s]+/)
    .map((x) => x.trim().replace("_", "-"))
    .filter(Boolean)
    .map((x) => {
      const [l, r] = x.split("-");
      return r ? `${l!.toLowerCase()}-${r.toUpperCase()}` : l!.toLowerCase();
    })
    .filter((x) => /^[a-z]{2,3}(-[A-Z]{2})?$/.test(x));
  return out.length ? [...new Set(out)].slice(0, 8) : [...DEFAULT_LANGUAGES];
}

export 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: "secret",
      secret: { set: (v) => v["metadata.tmdbApiKey:set"] === true, clearable: true },
      hint: "v3 API Key 或 v4 Read Access Token",
      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.tmdbApiKey:set": !!s.metadata.tmdbApiKeySecretRef,
    "metadata.tmdbBaseUrl": s.metadata.tmdbBaseUrl ?? "",
  }),
  toPatch: (v) => {
    const key = secretPatch(v["metadata.tmdbApiKey"]);
    return {
      metadata: {
        tmdbBaseUrl: str(v["metadata.tmdbBaseUrl"]) || null,
        ...(key !== undefined ? { tmdbApiKey: key } : {}),
      },
    };
  },
};

export const LANGUAGE_CARD: CardSpec = {
  anchor: "language",
  title: "语言与季集",
  description: "作品、季、集的标题和简介按语言回退链取值；特别篇决定是否拉取季 0。",
  fields: [
    {
      name: "metadata.languages",
      label: "语言回退链",
      kind: "text",
      placeholder: DEFAULT_LANGUAGES.join(", "),
      hint: "逗号分隔，如 zh-CN, zh-SG。标题和每集信息取链上第一个有值的语言，简介默认只取中文。只认简繁中文、英文和作品原语言（如日语作品的 ja-JP），其他语言跳过",
      wide: true,
    },
    {
      name: "metadata.overviewNonChineseFallback",
      label: "简介回退到非中文",
      kind: "switch",
      hint: "没有中文简介时，按回退链取英文等语言。关闭时留空，标题不受影响",
      wide: true,
    },
    {
      name: "metadata.includeSpecials",
      label: "包含特别篇（季 0）",
      kind: "switch",
      hint: "全量刷新和元数据回刷时，TMDB 有季 0 就一并拉取每集信息。特别篇不计入正片季的总集数和订阅完成判定",
      wide: true,
    },
  ],
  fromSettings: (s) => ({
    "metadata.languages": (s.metadata.languages ?? DEFAULT_LANGUAGES).join(", "),
    "metadata.includeSpecials": s.metadata.includeSpecials !== false,
    "metadata.overviewNonChineseFallback": s.metadata.overviewNonChineseFallback === true,
  }),
  toPatch: (v) => ({
    metadata: {
      languages: parseLanguages(str(v["metadata.languages"])),
      includeSpecials: v["metadata.includeSpecials"] === true,
      overviewNonChineseFallback: v["metadata.overviewNonChineseFallback"] === true,
    },
  }),
};

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