import type { OsDependency, PluginPermission } from './manifest';

// What the platform could install but does not have yet.
//
// ── Why this exists ──
//
// Discovery answers "what is on this machine". That was enough while every plugin shipped inside the
// platform's own repository, because being on disk and being available were the same fact. They stopped
// being the same fact on 2026-08-15, when music moved to gitea.officer.dev/plugins/music and left the
// tree entirely: it is real, installable and completely invisible to `discoverPlugins`.
//
// So there are three states now, not two:
//
//   available   in the catalogue, not on disk        — nothing here yet; clone it first
//   on disk     a directory, no `plugin_installs` row — a developer working on one
//   installed   both                                  — mounted, running
//
// ── Why a local constant rather than a fetch ──
//
// This is deliberately a stand-in for marketplace.officer.dev, and it is shaped as the wire format that
// marketplace would return rather than as something convenient for a TypeScript file. When the real one
// exists, `fetchCatalogue()` replaces the constant and nothing above it changes. That is the whole point
// of writing it this way now: the seam is chosen while it costs nothing.
//
// ── Why the entry repeats the manifest ──
//
// A local plugin's capabilities are read from its directory — `api/router.ts` present means it has
// routes. A remote one has no directory to read, so everything the plugins page shows BEFORE installing
// has to be declared here. That includes the two things worth seeing before consenting to an install:
// which permissions it wants, and which host binaries it will make the machine acquire.
//
// The duplication is real and it is the price of describing something you do not have. It is checked
// rather than trusted: after a clone, the plugin's own manifest is what the platform reads, and a
// catalogue that lied about it is a catalogue bug, not a new source of truth.

/** One plugin as the marketplace describes it. The manifest, plus where to get it. */
export type CatalogueEntry = {
  /** The directory it will be cloned into, and its id everywhere else. */
  appName: string;
  publisher: string;
  version: string;
  platform: string;
  label: string;
  summary: string;
  color: string;
  tile?: 'badge' | 'bare';
  /**
   * An absolute URL, unlike a manifest's `icon`, which is a lucide NAME or an `assets/icon.png` that
   * only exists once the plugin is on disk. A marketplace has to show artwork for something the machine
   * has never seen, so the catalogue carries a link rather than a file.
   */
  iconUrl?: string;
  /**
   * A lucide NAME, for a plugin that ships no artwork. Mirrors `manifest.icon`, and the same precedence
   * applies: `iconUrl` wins where both are given. Without this a glyph plugin draws the generic puzzle
   * piece in the store and its real icon only after install, which reads as the icon having changed.
   */
  icon?: string;
  /**
   * Where to clone from. HTTPS, never SSH: a marketplace serves the same URL to every machine, and an
   * `ssh://` clone assumes a key on that host for that user — true on the machine that published the
   * plugin and false everywhere else. Anonymous HTTPS also keeps credentials out of the install path
   * entirely, which is the property that makes a public marketplace simple.
   *
   * `[open]` A private or paid plugin needs authentication here, and that is a different feature: the
   * credential has to live somewhere the platform can read and must never appear in this catalogue.
   */
  source: string;
  /** What the owner is agreeing to, shown before the button rather than discovered afterwards. */
  permissions: PluginPermission[];
  /** Host binaries the install will acquire. Same reasoning — visible before consent. */
  osDependencies?: OsDependency[];
  /** What it ships. Read from the directory for a local plugin; declared here for one that is not. */
  has: { api: boolean; schema: boolean; sidecar: boolean; web: boolean };
};

/**
 * What this machine knows without asking anyone.
 *
 * This WAS the catalogue until marketplace.officer.dev existed. It is now the floor under it: the
 * answer when the store cannot be reached and nothing has been cached yet.
 *
 * Kept rather than deleted, and kept CURRENT, because the alternative is a first-boot machine with no
 * internet showing an empty store — which is indistinguishable from a store with nothing in it. Three
 * entries is a small price for "the plugins page always has something true on it".
 *
 * It will drift from the real catalogue, and that is acceptable in exactly one direction: it may be
 * missing something new. It must never describe a plugin that no longer exists, because that produces
 * an install button that fails at clone time.
 */
const BUNDLED: CatalogueEntry[] = [
  {
    appName: 'email',
    publisher: 'officerdev',
    version: '1.0.0',
    platform: '>=1.0.0',
    label: 'Email',
    summary: 'IMAP and Gmail accounts, synced locally and searchable offline',
    color: '#38bdf8',
    icon: 'Mail',
    source: 'https://gitea.officer.dev/plugins/email.git',
    permissions: [
      {
        key: 'email',
        label: 'Email',
        description: 'Mail accounts and messages',
      },
    ],
    // Email ships all four: the proxy router, `email_accounts`, the sync sidecar, and the mail panels.
    has: { api: true, schema: true, sidecar: true, web: true },
  },
  {
    appName: 'photos',
    publisher: 'officerdev',
    version: '1.0.0',
    platform: '>=1.0.0',
    label: 'Photos',
    summary: 'Your Immich library — browse, search, upload from the phone',
    color: '#10b981',
    icon: 'Images',
    source: 'https://gitea.officer.dev/plugins/photos.git',
    permissions: [
      {
        key: 'photos',
        label: 'Photos',
        description: 'Browse the photo library',
      },
    ],
    // No osDependencies: the sidecar is a Bun HTTP proxy and reaches Immich with `fetch`.
    has: { api: true, schema: true, sidecar: true, web: true },
  },
  {
    appName: 'transmission',
    publisher: 'officerdev',
    version: '1.0.0',
    platform: '>=1.0.0',
    label: 'Transmission',
    summary: 'Torrent downloads — queue, files, peers and speed, from your own daemon',
    color: '#dc2626',
    icon: 'Download',
    source: 'https://gitea.officer.dev/plugins/transmission.git',
    permissions: [
      {
        key: 'transmission',
        label: 'Transmission',
        description: 'Torrent downloads',
      },
    ],
    // `schema: false` — the connection lives in `service_connections`, a core table. See its manifest.
    has: { api: true, schema: false, sidecar: true, web: true },
  },
  {
    appName: 'soulseek',
    publisher: 'officerdev',
    version: '1.0.0',
    platform: '>=1.0.0',
    label: 'Soulseek',
    summary: 'Search and download from the Soulseek network, via your own slskd daemon',
    color: '#22c55e',
    icon: 'Music2',
    source: 'https://gitea.officer.dev/plugins/soulseek.git',
    permissions: [
      {
        key: 'soulseek',
        label: 'Soulseek',
        description: 'Search and download from the Soulseek network',
      },
    ],
    // `schema: true` unlike transmission: the CONNECTION lives in core `service_connections`, but the
    // favourites and the cached browse tree are this plugin's own three tables.
    has: { api: true, schema: true, sidecar: true, web: true },
  },
  {
    appName: 'vault',
    publisher: 'officerdev',
    version: '1.0.0',
    platform: '>=1.0.0',
    label: 'Vault',
    summary: 'Your Vaultwarden, behind an Officer session — passwords for the apps that speak Bitwarden',
    color: '#175ddc',
    icon: 'KeyRound',
    source: 'https://gitea.officer.dev/plugins/vault.git',
    permissions: [
      {
        key: 'vault',
        label: 'Vault',
        description: 'The password vault, and the Officer-held session that opens it',
      },
    ],
    // No osDependencies: the sidecar is a Bun HTTP/WS proxy and reaches its upstream with `fetch`.
    has: { api: true, schema: true, sidecar: true, web: true },
  },
  {
    appName: 'music',
    publisher: 'officerdev',
    version: '1.0.0',
    platform: '>=1.0.0',
    label: 'Music',
    summary: 'The music library — browse, play, favourites and playlists',
    color: '#22c55e',
    // Artwork rather than a glyph, so the tile draws no coloured square behind it.
    tile: 'bare',
    iconUrl: 'https://gitea.officer.dev/plugins/music/raw/branch/main/assets/icon.png',
    source: 'https://gitea.officer.dev/plugins/music.git',
    permissions: [
      {
        key: 'music',
        label: 'Music',
        description: 'The music library, playback, and your own favourites and playlists',
        readOnlyWrites: ['/favorites', '/now-playing', '/playlists', '/queue'],
      },
    ],
    osDependencies: [
      {
        binary: 'ffprobe',
        reason: 'Reads tags, duration and embedded lyrics. Without it every track indexes as a bare filename.',
        packages: { apt: 'ffmpeg', pacman: 'ffmpeg', dnf: 'ffmpeg', brew: 'ffmpeg' },
      },
      {
        binary: 'ffmpeg',
        reason: 'Compresses cover art for phones and grabs poster frames from videos.',
        packages: { apt: 'ffmpeg', pacman: 'ffmpeg', dnf: 'ffmpeg', brew: 'ffmpeg' },
      },
    ],
    has: { api: true, schema: true, sidecar: true, web: true },
  },
  {
    appName: 'offscale',
    publisher: 'officerdev',
    version: '1.0.0',
    platform: '>=1.0.0',
    label: 'Offscale',
    summary: 'Your tailnet — machines, users, pre-auth keys, access policy and device invites',
    color: '#818cf8',
    // Ships artwork as of 2026-08-15, so the tile is `bare` like music's. `icon` stays as the fallback
    // for the case the assets fail to publish — the glyph is strictly better than the generic box.
    tile: 'bare',
    iconUrl: 'https://gitea.officer.dev/plugins/offscale/raw/branch/main/assets/icon.png',
    icon: 'Network',
    source: 'https://gitea.officer.dev/plugins/offscale.git',
    permissions: [
      {
        key: 'offscale',
        label: 'Offscale',
        description: 'The tailnet: machines, routes, keys and ACLs',
        readOnlyWrites: ['/ssh-test', '/policy/assist'],
      },
    ],
    has: { api: true, schema: true, sidecar: true, web: true },
  },
  {
    appName: 'example',
    publisher: 'officerdev',
    version: '1.0.0',
    platform: '>=1.0.0',
    label: 'Example',
    summary: 'The reference plugin — one route, nothing else',
    color: '#94a3b8',
    icon: 'Puzzle',
    source: 'https://gitea.officer.dev/plugins/example.git',
    permissions: [{ key: 'example', label: 'Example', description: 'The reference plugin' }],
    // No `db/` — the one part it deliberately omits, so the smallest real plugin stays the smallest.
    has: { api: true, schema: false, sidecar: true, web: true },
  },
];

// ── Reaching the real one ──

/** Where the catalogue lives. Overridable so a fork, an air-gapped install or a test can point elsewhere. */
const MARKETPLACE_URL = process.env.MARKETPLACE_URL ?? 'https://marketplace.officer.dev';

/**
 * How long a good answer is reused before asking again.
 *
 * Long enough that opening the plugins page repeatedly does not hammer the store, short enough that a
 * plugin published this morning shows up this morning. The cache is per PROCESS and dies with it — a
 * restart is always a fresh look.
 */
const CACHE_TTL_MS = 5 * 60 * 1000;

/**
 * How long to wait for the store before giving up on it.
 *
 * The plugins page is blocked on this call, so the ceiling is "how long may that page take to render
 * when marketplace.officer.dev is unreachable". Four seconds is already at the edge of what a page can
 * spend before it feels broken — and a DNS black hole would otherwise hang it for the OS timeout.
 */
const FETCH_TIMEOUT_MS = 4000;

let cache: { entries: CatalogueEntry[]; at: number } | null = null;

/**
 * A catalogue entry drives `git clone`, so nothing arrives from the network untyped.
 *
 * This is not defence against a hostile marketplace — a store that serves a malicious `source` has
 * already won, since the owner asked to install what it lists. It is defence against a WRONG one: a
 * half-deployed API, a proxy serving an error page as JSON, a field renamed on one side. Every one of
 * those otherwise reaches the install path as `undefined` and fails somewhere far less legible.
 *
 * Entries that fail are dropped individually rather than failing the whole response: one malformed
 * plugin should not empty the store.
 */
function isEntry(value: unknown): value is CatalogueEntry {
  if (!value || typeof value !== 'object') return false;
  const e = value as Record<string, unknown>;
  return (
    typeof e.appName === 'string' &&
    e.appName.length > 0 &&
    typeof e.source === 'string' &&
    e.source.startsWith('https://') &&
    typeof e.label === 'string' &&
    typeof e.summary === 'string' &&
    Array.isArray(e.permissions) &&
    typeof e.has === 'object' &&
    e.has !== null
  );
}

/**
 * Everything the marketplace offers.
 *
 * Three answers in preference order — live, cached, bundled — and the page cannot tell which it got.
 * That is deliberate: the plugins page's job is to show what can be installed, and it can always show
 * something true. The alternative, an error state on the store being unreachable, makes an owner's own
 * installed plugins unmanageable because a website is down.
 *
 * Never throws. `catalogueEntry` below is on the install path, and an install that fails because the
 * catalogue lookup threw would be reported as "that plugin does not exist".
 */
export async function fetchCatalogue(): Promise<CatalogueEntry[]> {
  if (cache && Date.now() - cache.at < CACHE_TTL_MS) return cache.entries;

  try {
    const res = await fetch(`${MARKETPLACE_URL}/api/plugins`, {
      signal: AbortSignal.timeout(FETCH_TIMEOUT_MS),
      headers: { accept: 'application/json' },
    });
    if (!res.ok) throw new Error(`marketplace responded ${res.status}`);

    const body: unknown = await res.json();
    if (!Array.isArray(body)) throw new Error('marketplace returned a non-array');

    const entries = body.filter(isEntry);
    const dropped = body.length - entries.length;
    if (dropped > 0) console.warn(`[marketplace] dropped ${dropped} malformed entr(y/ies)`);

    // An empty valid response is cached like any other: a store may legitimately list nothing, and
    // treating empty as failure would pin a stale cache forever the first time it happened.
    cache = { entries, at: Date.now() };
    return entries;
  } catch (err) {
    const reason = err instanceof Error ? err.message : String(err);
    if (cache) {
      console.warn(`[marketplace] unreachable (${reason}) — serving the cached catalogue`);
      return cache.entries;
    }
    console.warn(`[marketplace] unreachable (${reason}) — serving the bundled catalogue`);
    return BUNDLED;
  }
}

/** One entry by app name, or null. Used by install to find where to clone from. */
export async function catalogueEntry(appName: string): Promise<CatalogueEntry | null> {
  const all = await fetchCatalogue().catch(() => BUNDLED);
  return all.find((e) => e.appName === appName) ?? null;
}

/**
 * A plugin's README, from the marketplace's single-entry endpoint.
 *
 * Separate from `fetchCatalogue` because the list endpoint deliberately does not carry READMEs — three
 * of them is already 38KB of markdown nobody has asked to read, on the request that draws the tiles.
 *
 * Fetched by the SERVER rather than by the browser, though CORS would allow either. An Officer client is
 * routinely somewhere its server is not: a phone on the tailnet, a laptop with the store blocked. The
 * server has the internet connection that already had to work for the catalogue itself, so routing
 * through it means the README appears in exactly the cases the plugin list did.
 *
 * Null on any failure. A missing README is a section that does not render, never an error state on a
 * page whose actual job is installing things.
 */
export async function fetchReadme(appName: string): Promise<string | null> {
  try {
    const res = await fetch(`${MARKETPLACE_URL}/api/plugins/${encodeURIComponent(appName)}`, {
      signal: AbortSignal.timeout(FETCH_TIMEOUT_MS),
      headers: { accept: 'application/json' },
    });
    if (!res.ok) return null;
    const body: unknown = await res.json();
    if (!body || typeof body !== 'object') return null;
    const readme = (body as { readme?: unknown }).readme;
    return typeof readme === 'string' && readme.length > 0 ? readme : null;
  } catch {
    return null;
  }
}

/** Testing seam. The cache is process-lifetime, so a test that does not clear it leaks into the next. */
export function clearCatalogueCache(): void {
  cache = null;
}