import {
  ToolboxValidationError,
  contextualizeToolboxLink,
  discoverToolboxCatalog,
  loadToolboxContext,
  parseToolboxApp,
  parseToolboxCatalog,
  type ToolboxAppManifest,
} from "../src/index.js";
import { describe, expect, it, vi } from "vitest";

const app = (
  overrides: Record<string, unknown> = {},
): Record<string, unknown> => ({
  schemaVersion: 1,
  id: "de.add-ideas.pdf-tools",
  name: "PDF Workbench",
  version: "1.2.3",
  description: "Local PDF tools",
  entry: "./index.html",
  icon: "./icon.svg",
  categories: ["documents", "pdf"],
  tags: ["merge", "split"],
  integration: {
    contextVersion: 1,
    launchModes: ["navigate", "new-tab"],
    embedding: "unsupported",
  },
  requirements: {
    secureContext: true,
    workers: true,
    indexedDb: true,
    crossOriginIsolated: false,
  },
  privacy: {
    processing: "local",
    fileUploads: false,
    telemetry: false,
  },
  source: {
    repository: "https://git.example.test/pdf-tools",
    license: "AGPL-3.0-only",
  },
  ...overrides,
});

const catalog = (
  overrides: Record<string, unknown> = {},
): Record<string, unknown> => ({
  schemaVersion: 1,
  id: "de.add-ideas.toolbox",
  name: "Toolbox",
  home: "./",
  theme: { mode: "system", brand: "add·ideas" },
  apps: [{ manifest: "./pdf/toolbox-app.json", enabled: true }],
  ...overrides,
});

const json = (value: unknown, init: ResponseInit = {}): Response =>
  new Response(JSON.stringify(value), {
    status: 200,
    headers: { "content-type": "application/json" },
    ...init,
  });

describe("v1 runtime parsing", () => {
  it("parses the full app contract and drops unknown optional fields", () => {
    const parsed = parseToolboxApp(
      app({
        futureField: "ignored",
        privacy: {
          processing: "local",
          fileUploads: false,
          telemetry: false,
          futurePrivacyField: true,
        },
      }),
    );

    expect(parsed).toMatchObject({
      schemaVersion: 1,
      id: "de.add-ideas.pdf-tools",
      privacy: { processing: "local", fileUploads: false, telemetry: false },
    });
    expect(parsed).not.toHaveProperty("futureField");
    expect(parsed.privacy).not.toHaveProperty("futurePrivacyField");
  });

  it("rejects unsupported versions and malformed known optional fields", () => {
    expect(() => parseToolboxApp(app({ schemaVersion: 2 }))).toThrow(
      ToolboxValidationError,
    );
    expect(() =>
      parseToolboxApp(
        app({
          requirements: {
            secureContext: true,
            workers: true,
            indexedDb: true,
            crossOriginIsolated: false,
            topLevelContext: "sometimes",
          },
        }),
      ),
    ).toThrow(/topLevelContext must be a boolean/u);
  });

  it("accepts omitted source metadata but validates it when supplied", () => {
    const withoutSource = app();
    delete withoutSource.source;
    expect(parseToolboxApp(withoutSource)).not.toHaveProperty("source");
    expect(() =>
      parseToolboxApp(
        app({ source: { repository: "../repository", license: "MIT" } }),
      ),
    ).toThrow(/absolute HTTP\(S\) URL/u);
  });

  it("parses manifest references and external inline catalog entries", () => {
    const parsed = parseToolboxCatalog(
      catalog({
        futureField: 1,
        apps: [
          { manifest: "./pdf/toolbox-app.json", enabled: true, future: true },
          {
            name: "External docs",
            entry: "https://docs.example.test/",
            launch: "new-tab",
            enabled: true,
          },
        ],
      }),
    );

    expect(parsed.apps).toHaveLength(2);
    expect(parsed.apps[1]).toEqual({
      name: "External docs",
      entry: "https://docs.example.test/",
      launch: "new-tab",
      enabled: true,
    });
    expect(parsed).not.toHaveProperty("futureField");
  });
});

describe("same-origin discovery", () => {
  it("prefers a same-origin query context over meta context", () => {
    const result = discoverToolboxCatalog({
      location: "https://tools.example.test/pdf/?toolbox=%2Fcatalog.json",
      document: {
        querySelector: () => ({
          getAttribute: () => "/meta-catalog.json",
        }),
      },
    });

    expect(result.status).toBe("found");
    if (result.status === "found") {
      expect(result.source).toBe("query");
      expect(result.catalogUrl.href).toBe(
        "https://tools.example.test/catalog.json",
      );
    }
  });

  it("rejects a cross-origin query without falling through to meta", () => {
    const result = discoverToolboxCatalog({
      location:
        "https://tools.example.test/pdf/?toolbox=https%3A%2F%2Fevil.test%2Fcatalog.json",
      document: {
        querySelector: () => ({ getAttribute: () => "/safe.json" }),
      },
    });

    expect(result.status).toBe("error");
    if (result.status === "error")
      expect(result.error.code).toBe("cross-origin");
  });
});

describe("loading and links", () => {
  it("loads a catalog, resolves manifests and URLs, and supports external apps", async () => {
    const fetch = vi.fn(
      async (input: string | URL | Request, init?: RequestInit) => {
        void init;
        const url = new URL(input instanceof Request ? input.url : input);
        if (url.pathname === "/catalog.json") {
          return json(
            catalog({
              apps: [
                { manifest: "./pdf/toolbox-app.json", enabled: true },
                { manifest: "./disabled/toolbox-app.json", enabled: false },
                {
                  name: "Documentation",
                  entry: "https://docs.example.test/",
                  launch: "new-tab",
                  enabled: true,
                },
              ],
            }),
          );
        }
        if (url.pathname === "/pdf/toolbox-app.json") return json(app());
        if (url.pathname === "/disabled/toolbox-app.json") {
          throw new Error("Disabled manifests must not be fetched");
        }
        return new Response("Not found", { status: 404 });
      },
    );

    const result = await loadToolboxContext({
      location: "https://tools.example.test/pdf/?toolbox=/catalog.json",
      fetch,
    });

    for (const [, init] of fetch.mock.calls) {
      expect(init).toMatchObject({ redirect: "error" });
    }

    expect(result.status).toBe("ready");
    if (result.status === "ready") {
      expect(result.context.catalog.homeUrl.href).toBe(
        "https://tools.example.test/",
      );
      expect(result.context.catalog.apps[0]?.kind).toBe("manifest");
      const first = result.context.catalog.apps[0];
      if (first?.kind === "manifest") {
        expect(first.app.entryUrl.href).toBe(
          "https://tools.example.test/pdf/index.html",
        );
      }
      expect(result.context.catalog.apps[1]).toMatchObject({
        kind: "external",
        launch: "new-tab",
      });
    }
  });

  it("returns a graceful error result for invalid JSON and fetch failure", async () => {
    const invalid = await loadToolboxContext({
      location: "https://tools.example.test/?toolbox=/catalog.json",
      fetch: async () => json(catalog({ schemaVersion: 2 })),
    });
    expect(invalid.status).toBe("error");

    const unavailable = await loadToolboxContext({
      location: "https://tools.example.test/?toolbox=/catalog.json",
      fetch: async () => new Response("No", { status: 503 }),
    });
    expect(unavailable.status).toBe("error");
    if (unavailable.status === "error") {
      expect(unavailable.error.code).toBe("fetch-failed");
    }
  });

  it("rejects a fetch redirected to a cross-origin response URL", async () => {
    const response = json(catalog());
    Object.defineProperty(response, "url", {
      value: "https://evil.example/toolbox.catalog.json",
    });
    const result = await loadToolboxContext({
      location: "https://tools.example.test/?toolbox=/catalog.json",
      fetch: async () => response,
    });

    expect(result.status).toBe("error");
    if (result.status === "error")
      expect(result.error.code).toBe("cross-origin");
  });

  it("adds context to same-origin links but leaves external links alone", () => {
    expect(
      new URL(
        contextualizeToolboxLink("./other/", "/catalog.json", {
          location: "https://tools.example.test/pdf/",
        }),
      ).searchParams.get("toolbox"),
    ).toBe("https://tools.example.test/catalog.json");

    expect(
      contextualizeToolboxLink("https://docs.example.test/", "/catalog.json", {
        location: "https://tools.example.test/pdf/",
      }),
    ).toBe("https://docs.example.test/");
  });
});

export const validAppFixture = app() as unknown as ToolboxAppManifest;