import { describe, expect, it, vi } from "vitest";

import {
  CACHEABLE_ASSET_CONTENT_TYPES,
  decodeStaticAssetManifest,
} from "../../src/contracts/service-worker-static-manifest.ts";

/**
 * SW-RR-03. The build generator and the shared runtime decoder must agree on
 * exactly which asset kinds exist. A generator that emits `.mjs` or `.png` while
 * the decoder refuses them turns a correct build into a runtime contract
 * failure, and the reverse admits a kind no build produces.
 */
describe("SW-RR-03 one authoritative cacheable asset table", () => {
  it("covers every extension the generator emits", async () => {
    const generator = await import(
      "../../scripts/generate-service-worker-assets.ts"
    );
    expect(generator).toBeDefined();
    for (const extension of [
      ".js",
      ".mjs",
      ".css",
      ".woff2",
      ".svg",
      ".png",
      ".webp",
    ]) {
      expect(CACHEABLE_ASSET_CONTENT_TYPES[extension]).toBeDefined();
    }
  });

  it("decodes a manifest row for every table entry", () => {
    const assets = Object.entries(CACHEABLE_ASSET_CONTENT_TYPES).map(
      ([extension, contentType], index) => ({
        url: `/assets/name-abcdefgh${index}${extension}`,
        sha256: `sha256:${"a".repeat(64)}`,
        bytes: 16,
        contentType,
      }),
    );
    const decoded = decodeStaticAssetManifest({
      schemaVersion: 1,
      buildId: "build-1",
      releaseId: "release-1",
      assets,
      setDigest: `sha256:${"b".repeat(64)}`,
    });
    expect(decoded).toMatchObject({ ok: true });
  });

  it("refuses a row whose extension is not in the table", () => {
    const decoded = decodeStaticAssetManifest({
      schemaVersion: 1,
      buildId: "build-1",
      releaseId: "release-1",
      setDigest: `sha256:${"b".repeat(64)}`,
      assets: [
        {
          url: "/assets/control-abcdefgh.json",
          sha256: `sha256:${"a".repeat(64)}`,
          bytes: 16,
          contentType: "application/json",
        },
      ],
    });
    expect(decoded.ok).toBe(false);
  });
});