import { getHeaders, useClient } from 'hooks/useClient';

// Every call the panels make to this plugin's own sidecar, through `/api/atelier`.
//
// `useClient('/api/atelier')` gives typed verbs for JSON; `fileUrl` below is the one thing a client
// call cannot do — put a bearer token on an `<img src>`.

const ATELIER_API = '/api/atelier';

/**
 * A provider: a vendor Officer curates, and whether we hold a key for it.
 *
 * Every provider in the catalogue is listed, set up or not — a vendor you have no key for is exactly
 * what you need to see in order to add one. There is no "configured provider" as a separate thing;
 * `configured` is a fact about the key, and the model is chosen per generation.
 */
export type ProviderStatus = {
  name: string;
  label: string;
  configured: boolean;
  /**
   * This provider authenticates with nothing — a service of ours rather than a vendor's. It is
   * `configured` by existing, so anywhere that offers to add or change a key must skip it.
   */
  keyless: boolean;
  key_source: 'store' | 'environment' | 'keyless' | null;
  /** Null for a keyless provider: naming a variable nobody can usefully set would be a wrong hint. */
  env_var: string | null;
  /** False when the catalogue lists a vendor this build has no adapter for. */
  usable: boolean;
  supports_edit: boolean;
  refreshable: boolean;
  default_model: string | null;
  models: string[];
  model_details: CatalogueModel[];
  updated_at: string | null;
};

/** One model in the catalogue — what it makes, what it accepts, what it costs. */
export type CatalogueModel = {
  id: string;
  label?: string;
  kind: 'image' | 'video';
  sizes?: string[];
  qualities?: string[];
  transparency?: boolean;
  edit?: boolean;
  pricing?: Record<string, unknown>;
  status?: 'current' | 'deprecated';
  source?: 'shipped' | 'api' | 'scraped';
};

/** Snake case, matching the server — one spelling per field across every endpoint. */
export type GenerationRow = {
  id: string;
  request_id: string;
  index: number;
  operation: 'generate' | 'edit';
  status: 'queued' | 'running' | 'succeeded' | 'failed';
  provider: string;
  model: string;
  prompt: string;
  options: Record<string, unknown> | null;
  input_images: string[] | null;
  mask_image: string | null;
  image_path: string | null;
  url: string | null;
  width: number | null;
  height: number | null;
  has_alpha: boolean | null;
  opaque: boolean | null;
  cost_usd: string | null;
  duration_ms: number | null;
  error: string | null;
  created_at: string;
};

export type JobResponse = {
  id?: string;
  status?: string;
  created?: number;
  data?: { url: string; revised_prompt?: string; b64_json?: string }[];
  atelier?: {
    id: string;
    status: 'queued' | 'running' | 'succeeded' | 'failed' | 'partial';
    cost_usd: string | null;
    duration_ms: number;
    images: { id: string; status: string; url: string | null; error: string | null }[];
  };
  error?: { message: string; param?: string | null };
};

export type Collection = {
  id: string;
  name: string;
  description: string | null;
  created_at: string;
  updated_at: string;
};

export type CollectionSummary = Collection & { item_count: number; cover_image_path: string | null; cover_url: string | null };
export type CollectionDetail = Collection & { images: GenerationRow[] };

/**
 * `row.url` (e.g. `/files/<name>`) with this session's bearer token appended, for an `<img src>`.
 *
 * Browsers cannot set an `Authorization` header on an `<img>` request, so the token travels in the
 * query string instead — the same escape hatch `FileViewer/file-types.ts` and the music plugin's
 * `MusicPlayerHost` already use for exactly this reason (`permission-gate.ts` and `user-middleware.ts`
 * both read `?token=` as well as the header).
 */
export function fileUrl(path: string | null): string | null {
  if (!path) return null;
  const token = getHeaders()['Authorization']?.replace('Bearer ', '') ?? '';
  return `${ATELIER_API}${path}?token=${encodeURIComponent(token)}`;
}

export function useAtelierClient() {
  const client = useClient(ATELIER_API);

  return {
    ...client,

    listProviders: () => client.get<{ data: ProviderStatus[] }>('providers').then((r) => r.data),

    /** Save a provider's key. Goes to the platform's secret store; nothing ever reads it back. */
    setProviderKey: (name: string, apiKey: string) =>
      client.put<{ data: ProviderStatus[] }>(`providers/${name}/key`, { apiKey }).then((r) => r.data),
    /** Forget a stored key. Refused for a key that came from the environment — that one is the install's. */
    clearProviderKey: (name: string) =>
      client.delete<{ data: ProviderStatus[] }>(`providers/${name}/key`).then((r) => r.data),

    /**
     * Re-read one provider's models and prices from the vendor, or every provider when omitted.
     *
     * The only thing that updates the catalogue — there is no schedule. It runs a live fetch, so it is
     * as slow as the vendor is and the caller should show that it is working.
     */
    refreshCatalogue: (provider?: string) =>
      client
        .post<{ data: { updated_at: string | null; providers: ProviderStatus[]; changed: boolean } }>(
          `providers/catalogue/refresh${provider ? `?provider=${encodeURIComponent(provider)}` : ''}`,
          {},
        )
        .then((r) => r.data),

    listGenerations: (limit = 60) => client.get<{ data: GenerationRow[] }>(`images?limit=${limit}`).then((r) => r.data),

    startGeneration: (body: Record<string, unknown>) => client.post<{ id: string }>('images/generations', body),

    /** Long-polls up to `waitSeconds` server-side, so the panel does not run its own retry loop. */
    awaitGeneration: (id: string, waitSeconds = 30) => client.get<JobResponse>(`images/generations/${id}?wait=${waitSeconds}`),

    /** A provider row is adapter + model; the key is set separately, and never comes back. */
    createProvider: (adapter: string, model: string) =>
      client.post<{ data: ProviderStatus[] }>('providers', { adapter, model }).then((r) => r.data),
    updateProvider: (id: string, values: Record<string, unknown>) =>
      client.patch<{ data: ProviderStatus[] }>(`providers/${id}`, values).then((r) => r.data),
    deleteProvider: (id: string) => client.delete<{ data: ProviderStatus[] }>(`providers/${id}`).then((r) => r.data),

    listCollections: () => client.get<{ data: CollectionSummary[] }>('collections').then((r) => r.data),
    getCollection: (id: string) => client.get<{ data: CollectionDetail }>(`collections/${id}`).then((r) => r.data),
    createCollection: (name: string) =>
      client.post<{ data: Collection }>('collections', { name }).then((r) => r.data),
    renameCollection: (id: string, name: string) =>
      client.patch<{ data: Collection }>(`collections/${id}`, { name }).then((r) => r.data),
    /**
     * `deleteImages` is the difference between filing something wrongly and regretting the whole
     * afternoon — the server keeps the images unless it is asked, by name, not to.
     */
    deleteCollection: (id: string, deleteImages = false) =>
      client
        .delete<{ data: { id: string; deleted: boolean; deletedImages: number } }>(
          `collections/${id}${deleteImages ? '?images=delete' : ''}`,
        )
        .then((r) => r.data),
    addToCollection: (id: string, generationIds: string[]) =>
      client
        .post<{ data: { added: number; images: GenerationRow[] } }>(`collections/${id}/items`, { generationIds })
        .then((r) => r.data),
    removeFromCollection: (id: string, generationId: string) =>
      client.delete<{ data: { images: GenerationRow[] } }>(`collections/${id}/items/${generationId}`).then((r) => r.data),
  };
}

export type UseAtelierClientType = ReturnType<typeof useAtelierClient>;