import { z } from 'zod';

/**
 * Plugin administration types shared between api and web (ADR 0008, issue #71).
 * The manifest itself lives in `@dorfteich/plugin-sdk`; these types describe an
 * *installed* plugin as the instance stores and surfaces it.
 */

/**
 * Instance-level activation a Site Admin sets per plugin (ADR 0008 lifecycle):
 * `disabled` — installed but inert; `optional` — available, Pond Admins toggle
 * it per pond; `required` — always on everywhere and cannot be uninstalled.
 */
export const PLUGIN_INSTANCE_MODES = ['disabled', 'optional', 'required'] as const;
export type PluginInstanceMode = (typeof PLUGIN_INSTANCE_MODES)[number];

/** One extension point as surfaced to admins (mirrors the manifest entry). */
export interface PluginExtensionPointView {
  type: string;
  id: string;
  title: Record<string, string>;
}

/** An installed plugin as returned by the admin API. */
export interface PluginView {
  id: string;
  name: string;
  version: string;
  apiVersion: string;
  kind: string;
  mode: PluginInstanceMode;
  /** Capabilities the manifest declared, shown to the Site Admin at install. */
  permissions: string[];
  extensionPoints: PluginExtensionPointView[];
  /** Base path the sandbox loads assets from: `/plugins/<id>/<version>/`. */
  assetBasePath: string;
  license: string;
  homepage?: string;
  /** SHA-256 (hex) of the installed bundle ZIP (#232); null = installed
   * before hash recording existed — reinstall to record it. */
  bundleSha256: string | null;
  /** Verdict against `plugins.allowlist` (#232): `not_enforced` while the
   * allowlist is empty; otherwise pinned / unpinned / mismatch. */
  pinning: 'not_enforced' | 'pinned' | 'unpinned' | 'mismatch';
  installedAt: string;
  updatedAt: string;
}

/**
 * Machine-readable rejection codes for an install/uninstall attempt. Each is
 * also an `errors.<code>` i18n key. `validateManifest` field issues travel in
 * the ApiErrorBody `details`.
 */
export const PLUGIN_ERROR_CODES = [
  'plugin_invalid_zip',
  'plugin_bad_structure',
  'plugin_invalid_manifest',
  'plugin_api_incompatible',
  'plugin_too_large',
  'plugin_missing_bundle',
  'plugin_missing_styles',
  'plugin_css_unsafe',
  'plugin_version_not_higher',
  'plugin_required_cannot_uninstall',
  'plugin_not_found',
  'plugin_not_optional',
  'plugin_not_pinned',
  'plugin_hash_mismatch',
] as const;
export type PluginErrorCode = (typeof PLUGIN_ERROR_CODES)[number];

/**
 * An optional plugin as shown in a pond's plugin settings (issue #72): the
 * installed plugin plus whether this pond has activated it. Only `optional`
 * plugins appear here — `required` ones are always on and `disabled` ones are
 * never available, so neither is a per-pond choice.
 */
export interface PondPluginSetting {
  plugin: PluginView;
  enabled: boolean;
}

/** Payload to switch a plugin's instance mode (Site Admin, issue #72). */
export const pluginModeInputSchema = z.object({
  mode: z.enum(PLUGIN_INSTANCE_MODES),
});
export type PluginModeInput = z.infer<typeof pluginModeInputSchema>;

/** Payload to toggle an optional plugin for one pond (Pond Admin, issue #72). */
export const pondPluginToggleInputSchema = z.object({
  enabled: z.boolean(),
});
export type PondPluginToggleInput = z.infer<typeof pondPluginToggleInputSchema>;

/**
 * What a `plugin_block` of an inactive plugin renders instead of its sandbox
 * (issue #76): the manifest `fallback`, resolved server-side from the stored
 * manifest snapshot — which survives uninstall as a tombstone, so blocks in
 * documents always have something to show. An image fallback is resolved to
 * its served URL while the files exist and degrades to `null` (neutral
 * placeholder) once they are gone.
 */
export interface PluginFallbackView {
  pluginId: string;
  name: string;
  fallback: { type: 'text'; value: string } | { type: 'image'; url: string } | null;
}

/**
 * Responses of the viewer-scoped plugin API (issue #74, `/api/v1/plugin/…`).
 * Every call runs with the requesting user's session behind the standard
 * permission guards, so a plugin never sees more than its viewer could. The
 * heading outline reuses the editor's `OutlineEntry` (see editor-schema).
 */
export interface PluginPageSummary {
  id: string;
  title: string;
  slug: string;
  /** Label names, for pageTool filtering (issue #77). */
  labels: string[];
}

export interface PluginPageMeta {
  id: string;
  title: string;
  pondId: string;
  slug: string;
}

export interface PluginPageContent {
  markdown: string;
}