import { describe, expect, it, vi } from "vitest";
import {
  StuffboxClient,
  StuffboxError,
  type FetchLike,
} from "../src";

function json(value: unknown, init: ResponseInit = {}): Response {
  const headers = new Headers(init.headers);
  headers.set("content-type", "application/json");
  return new Response(JSON.stringify(value), {
    ...init,
    headers,
  });
}

describe("StuffboxClient", () => {
  it("creates a PKCE connection request using the protocol wire names", async () => {
    const fetcher = vi.fn<FetchLike>().mockResolvedValue(
      json({
        request_id: "cr_1",
        client_id: "app_0123456789abcdefghijklmnop",
        callback_url: "https://synapsis.test/stuffbox/callback",
        authorization_url: "https://stuffbox.test/authorize/cr_1",
        expires_at: "2026-01-01T00:05:00.000Z",
      }),
    );
    const client = new StuffboxClient({
      baseUrl: "https://stuffbox.test/",
      fetch: fetcher,
      accessToken: "must-not-leak",
    });

    await expect(
      client.createConnectionRequest({
        clientId: "app_0123456789abcdefghijklmnop",
        callbackUrl: "https://synapsis.test/stuffbox/callback",
        codeChallenge: "c".repeat(43),
        scopes: ["assets:read", "assets:write"],
        state: "state-with-enough-entropy",
      }),
    ).resolves.toEqual({
      id: "cr_1",
      clientId: "app_0123456789abcdefghijklmnop",
      callbackUrl: "https://synapsis.test/stuffbox/callback",
      authorizationUrl: "https://stuffbox.test/authorize/cr_1",
      expiresAt: "2026-01-01T00:05:00.000Z",
    });

    const [url, init] = fetcher.mock.calls[0];
    expect(url).toBe("https://stuffbox.test/api/v1/connection-requests");
    expect(init?.method).toBe("POST");
    expect(init?.headers).not.toHaveProperty("Authorization");
    expect(JSON.parse(String(init?.body))).toEqual({
      client_id: "app_0123456789abcdefghijklmnop",
      callback_url: "https://synapsis.test/stuffbox/callback",
      code_challenge: "c".repeat(43),
      code_challenge_method: "S256",
      scopes: ["assets:read", "assets:write"],
      state: "state-with-enough-entropy",
    });
  });

  it("automatically creates a callback identity when the client ID is omitted", async () => {
    const fetcher = vi.fn<FetchLike>().mockResolvedValue(
      json({
        request_id: "cr_self_hosted",
        client_id: "app_self_hosted_0123456789",
        callback_url: "https://synapsis.test/stuffbox/callback",
        authorization_url: "https://stuffbox.test/authorize/cr_self_hosted",
        expires_at: "2026-01-01T00:05:00.000Z",
      }),
    );
    const client = new StuffboxClient({
      baseUrl: "https://stuffbox.test",
      fetch: fetcher,
    });

    await expect(
      client.createConnectionRequest({
        callbackUrl: "https://synapsis.test/stuffbox/callback",
        codeChallenge: "c".repeat(43),
        scopes: ["assets:read", "assets:write"],
        state: "state-with-enough-entropy",
      }),
    ).resolves.toEqual({
      id: "cr_self_hosted",
      clientId: "app_self_hosted_0123456789",
      callbackUrl: "https://synapsis.test/stuffbox/callback",
      authorizationUrl: "https://stuffbox.test/authorize/cr_self_hosted",
      expiresAt: "2026-01-01T00:05:00.000Z",
    });

    expect(JSON.parse(String(fetcher.mock.calls[0][1]?.body))).toEqual({
      callback_url: "https://synapsis.test/stuffbox/callback",
      code_challenge: "c".repeat(43),
      code_challenge_method: "S256",
      scopes: ["assets:read", "assets:write"],
      state: "state-with-enough-entropy",
    });
  });

  it("keeps the deprecated selfHosted option wire-compatible", async () => {
    const fetcher = vi.fn<FetchLike>().mockResolvedValue(
      json({
        request_id: "cr_legacy",
        client_id: "app_legacy_0123456789abcdef",
        callback_url: "https://legacy.test/stuffbox/callback",
        authorization_url: "https://stuffbox.test/authorize/cr_legacy",
        expires_at: "2026-01-01T00:05:00.000Z",
      }),
    );
    const client = new StuffboxClient({ baseUrl: "https://stuffbox.test", fetch: fetcher });

    await client.createConnectionRequest({
      selfHosted: true,
      callbackUrl: "https://legacy.test/stuffbox/callback",
      codeChallenge: "c".repeat(43),
      scopes: ["assets:read"],
      state: "state-with-enough-entropy",
    });

    expect(JSON.parse(String(fetcher.mock.calls[0][1]?.body))).toMatchObject({
      registration_mode: "self_hosted",
    });
  });

  it("rejects a connection response that omits the client ID", async () => {
    const fetcher = vi.fn<FetchLike>().mockResolvedValue(
      json({
        request_id: "cr_missing_client",
        callback_url: "https://synapsis.test/stuffbox/callback",
        authorization_url: "https://stuffbox.test/authorize/cr_missing_client",
        expires_at: "2026-01-01T00:05:00.000Z",
      }),
    );
    const client = new StuffboxClient({
      baseUrl: "https://stuffbox.test",
      fetch: fetcher,
    });

    const error = await client
      .createConnectionRequest({
        callbackUrl: "https://synapsis.test/stuffbox/callback",
        codeChallenge: "c".repeat(43),
        scopes: ["assets:read"],
        state: "state-with-enough-entropy",
      })
      .catch((cause: unknown) => cause);

    expect(error).toBeInstanceOf(StuffboxError);
    expect(error).toMatchObject({
      code: "invalid_response",
      message: "Missing string field: clientId",
    });
  });

  it("rejects a connection response that omits the canonical callback URL", async () => {
    const fetcher = vi.fn<FetchLike>().mockResolvedValue(
      json({
        request_id: "cr_missing_callback",
        client_id: "app_self_hosted_0123456789",
        authorization_url: "https://stuffbox.test/authorize/cr_missing_callback",
        expires_at: "2026-01-01T00:05:00.000Z",
      }),
    );
    const client = new StuffboxClient({
      baseUrl: "https://stuffbox.test",
      fetch: fetcher,
    });

    const error = await client
      .createConnectionRequest({
        callbackUrl: "https://synapsis.test/stuffbox/callback",
        codeChallenge: "c".repeat(43),
        scopes: ["assets:read"],
        state: "state-with-enough-entropy",
      })
      .catch((cause: unknown) => cause);

    expect(error).toBeInstanceOf(StuffboxError);
    expect(error).toMatchObject({
      code: "invalid_response",
      message: "Missing string field: callbackUrl",
    });
  });

  it("dispatches authorization-code and refresh grants through one endpoint", async () => {
    const fetcher = vi.fn<FetchLike>().mockImplementation(async () =>
      json({
        access_token: "at_new",
        token_type: "bearer",
        expires_in: 600,
        refresh_token: "rt_new",
        refresh_token_expires_in: 2_592_000,
        scope: "assets:read assets:write",
      }),
    );
    const client = new StuffboxClient({
      baseUrl: "https://stuffbox.test",
      fetch: fetcher,
    });

    const exchanged = await client.exchangeAuthorizationCode({
      clientId: "app_0123456789abcdefghijklmnop",
      code: "code",
      codeVerifier: "verifier",
      redirectUri: "https://node.test/callback",
    });
    const refreshed = await client.refreshTokens("rt_old");

    expect(exchanged).toEqual(refreshed);
    expect(JSON.parse(String(fetcher.mock.calls[0][1]?.body))).toEqual({
      grant_type: "authorization_code",
      client_id: "app_0123456789abcdefghijklmnop",
      code: "code",
      code_verifier: "verifier",
      redirect_uri: "https://node.test/callback",
    });
    expect(JSON.parse(String(fetcher.mock.calls[1][1]?.body))).toEqual({
      grant_type: "refresh_token",
      refresh_token: "rt_old",
    });
    expect(fetcher.mock.calls[0][0]).toBe("https://stuffbox.test/api/v1/token");
    expect(fetcher.mock.calls[1][0]).toBe("https://stuffbox.test/api/v1/token");
  });

  it("adds a lazy bearer token only to protected requests", async () => {
    const accessToken = vi.fn().mockResolvedValue("at_secret");
    const fetcher = vi.fn<FetchLike>().mockResolvedValue(
      json({ items: [], next_cursor: "next" }),
    );
    const client = new StuffboxClient({
      baseUrl: "https://stuffbox.test",
      fetch: fetcher,
      accessToken,
    });

    await expect(client.listAssets({ limit: 10 })).resolves.toEqual({
      items: [],
      nextCursor: "next",
    });
    expect(accessToken).toHaveBeenCalledOnce();
    expect(fetcher.mock.calls[0][0]).toBe(
      "https://stuffbox.test/api/v1/assets?limit=10",
    );
    expect(fetcher.mock.calls[0][1]?.headers).toHaveProperty(
      "Authorization",
      "Bearer at_secret",
    );
  });

  it("rejects an asset page size outside the public API range before fetching", async () => {
    const fetcher = vi.fn<FetchLike>();
    const client = new StuffboxClient({
      baseUrl: "https://stuffbox.test",
      fetch: fetcher,
      accessToken: "at_secret",
    });

    await expect(client.listAssets({ limit: 101 })).rejects.toThrow(
      "Asset list limit must be between 1 and 100",
    );
    expect(fetcher).not.toHaveBeenCalled();
  });

  it("creates and completes a direct upload without handling file bytes", async () => {
    const fetcher = vi
      .fn<FetchLike>()
      .mockResolvedValueOnce(
        json({
          upload_id: "up_1",
          upload_url: "https://objects.test/signed",
          method: "PUT",
          required_headers: { "Content-Type": "image/png" },
          expires_at: "2026-01-01T00:10:00.000Z",
          completion_token: "uct_1",
        }),
      )
      .mockResolvedValueOnce(
        json({
          asset: {
            id: "as_1",
            public_id: "pub_1",
            canonical_url: "https://stuffbox.test/f/pub_1",
            original_filename: "image.png",
            mime_type: "image/png",
            byte_size: 12,
            status: "active",
            created_at: "2026-01-01T00:00:00.000Z",
          },
        }),
      );
    const client = new StuffboxClient({
      baseUrl: "https://stuffbox.test",
      fetch: fetcher,
      accessToken: "at_1",
    });

    const session = await client.createUpload({
      filename: "image.png",
      mimeType: "image/png",
      size: 12,
    });
    const asset = await client.completeUpload(session.id, {
      completionToken: session.completionToken,
    });

    expect(session.requiredHeaders).toEqual({ "Content-Type": "image/png" });
    expect(asset.url).toBe("https://stuffbox.test/f/pub_1");
    expect(JSON.parse(String(fetcher.mock.calls[1][1]?.body))).toEqual({
      completion_token: "uct_1",
    });
  });

  it("throws typed structured errors with retry metadata", async () => {
    const fetcher: FetchLike = async () =>
      json(
        {
          error: {
            code: "quota_exceeded",
            message: "Storage quota exceeded",
            details: { remaining_bytes: 4 },
            request_id: "req_1",
          },
        },
        { status: 409, headers: { "retry-after": "12" } },
      );
    const client = new StuffboxClient({
      baseUrl: "https://stuffbox.test",
      fetch: fetcher,
      accessToken: "at_1",
    });

    const error = await client
      .createUpload({ filename: "large.mp4", mimeType: "video/mp4", size: 100 })
      .catch((cause: unknown) => cause);
    expect(error).toBeInstanceOf(StuffboxError);
    expect(error).toMatchObject({
      code: "quota_exceeded",
      status: 409,
      requestId: "req_1",
      retryAfter: 12,
      details: { remaining_bytes: 4 },
    });
  });

  it("supports endpoint overrides and per-request bearer suppression", async () => {
    const fetcher = vi.fn<FetchLike>().mockResolvedValue(json({ items: [] }));
    const client = new StuffboxClient({
      baseUrl: "https://example.test/custom",
      fetch: fetcher,
      accessToken: "at_default",
      endpoints: { assets: "/assets" },
    });

    await client.listAssets({}, { accessToken: null });
    expect(fetcher.mock.calls[0][0]).toBe("https://example.test/custom/assets");
    expect(fetcher.mock.calls[0][1]?.headers).not.toHaveProperty("Authorization");
  });

  it("revokes opaque tokens without adding another bearer credential", async () => {
    const fetcher = vi
      .fn<FetchLike>()
      .mockResolvedValue(new Response(null, { status: 204 }));
    const client = new StuffboxClient({
      baseUrl: "https://stuffbox.test",
      fetch: fetcher,
      accessToken: "at_configured",
    });

    await client.revokeToken({
      token: "rt_revoked",
      tokenTypeHint: "refresh_token",
    });

    expect(fetcher.mock.calls[0][0]).toBe("https://stuffbox.test/api/v1/revoke");
    expect(fetcher.mock.calls[0][1]?.headers).not.toHaveProperty("Authorization");
    expect(JSON.parse(String(fetcher.mock.calls[0][1]?.body))).toEqual({
      token: "rt_revoked",
      token_type_hint: "refresh_token",
    });
  });

  it("gets and deletes an owner-scoped asset by encoded ID", async () => {
    const fetcher = vi
      .fn<FetchLike>()
      .mockResolvedValueOnce(
        json({
          asset: {
            id: "asset/one",
            public_asset_id: "pub_1",
            url: "https://stuffbox.test/f/pub_1",
            filename: "photo.jpg",
            mimeType: "image/jpeg",
            byteSize: 20,
            status: "active",
            createdAt: "2026-01-01T00:00:00.000Z",
          },
        }),
      )
      .mockResolvedValueOnce(new Response(null, { status: 204 }));
    const client = new StuffboxClient({
      baseUrl: "https://stuffbox.test",
      fetch: fetcher,
      accessToken: "at_1",
    });

    await expect(client.getAsset("asset/one")).resolves.toMatchObject({
      id: "asset/one",
      publicId: "pub_1",
    });
    await client.deleteAsset("asset/one");

    expect(fetcher.mock.calls[0][0]).toBe(
      "https://stuffbox.test/api/v1/assets/asset%2Fone",
    );
    expect(fetcher.mock.calls[1][1]?.method).toBe("DELETE");
  });
});