import type {
  PortalMediaKind,
  SupportDocPayload,
  SupportDocSlug,
  SupportDocumentDetail,
  SupportDocVersionDetail,
  SupportDocVersionSummary,
} from "@edr/types";

import { api as client } from "../auth/http";

const ROOT = "/support-content";
const BASE = `${ROOT}/documents`;

/**
 * Customer-facing help/FAQ/legal copy for the freight portal. The client's
 * response interceptor already unwraps the `{ success, data }` envelope, so
 * every method is a one-liner.
 */
export const portalContentService = {
  async getBySlug(slug: SupportDocSlug): Promise<SupportDocumentDetail> {
    const { data } = await client.get<SupportDocumentDetail>(`${BASE}/${slug}`);
    return data;
  },

  /**
   * Replaces the document's whole payload. Whole-payload rather than per-field
   * on purpose: one Save becomes exactly one version, which is what keeps the
   * history list readable.
   */
  async update(
    slug: SupportDocSlug,
    payload: SupportDocPayload,
    note?: string,
  ): Promise<SupportDocumentDetail> {
    const { data } = await client.patch<SupportDocumentDetail>(
      `${BASE}/${slug}`,
      { payload, note },
    );
    return data;
  },

  async listVersions(slug: SupportDocSlug): Promise<SupportDocVersionSummary[]> {
    const { data } = await client.get<SupportDocVersionSummary[]>(
      `${BASE}/${slug}/versions`,
    );
    return data;
  },

  async getVersion(
    slug: SupportDocSlug,
    version: number,
  ): Promise<SupportDocVersionDetail> {
    const { data } = await client.get<SupportDocVersionDetail>(
      `${BASE}/${slug}/versions/${version}`,
    );
    return data;
  },

  /**
   * Uploads an image or video and returns its object *key*. The key is what
   * gets saved in the document; `url` is only for showing the editor a preview
   * right now, and expires.
   */
  async uploadMedia(
    file: File,
  ): Promise<{ key: string; kind: PortalMediaKind; url: string }> {
    const form = new FormData();
    form.append("file", file);

    const { data } = await client.post<{
      key: string;
      kind: PortalMediaKind;
      url: string;
    }>(`${ROOT}/media`, form);
    return data;
  },

  /** Resolves one stored key to a temporary URL, for editor previews. */
  async mediaUrl(key: string): Promise<string> {
    const { data } = await client.get<{ url: string }>(`${ROOT}/media-url`, {
      params: { key },
    });
    return data.url;
  },

  /** Re-saves an old payload as a new version — never destructive. */
  async restore(
    slug: SupportDocSlug,
    version: number,
  ): Promise<SupportDocumentDetail> {
    const { data } = await client.post<SupportDocumentDetail>(
      `${BASE}/${slug}/versions/${version}/restore`,
      {},
    );
    return data;
  },
};