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

import { analyzeBundleScan, formatBundleScanSummary } from "./bundleScan";

describe("bundle scan", () => {
  it("reports actionable over-budget vendor chunks", () => {
    const result = analyzeBundleScan({
      assets: [{ name: "assets/vendor-react.abcd.js", sizeKb: 620 }],
      warnings: [
        {
          code: "PLUGIN_WARNING",
          message: "Some chunks are larger than 500 kB after minification.",
        },
      ],
    });

    expect(result.budgetViolations).toEqual([
      {
        name: "assets/vendor-react.abcd.js",
        sizeKb: 620,
        thresholdKb: 500,
        budgetKind: "vendor",
      },
    ]);
    expect(result.warnings[0]?.class).toBe("large-chunk");
  });

  it("accepts chunks within explicit app, vendor and editor budgets", () => {
    const result = analyzeBundleScan({
      assets: [
        { name: "assets/routes-dashboard.js", sizeKb: 340 },
        { name: "assets/vendor-radix.js", sizeKb: 480 },
        { name: "assets/monaco-editor.js", sizeKb: 840 },
      ],
    });

    expect(result.budgetViolations).toEqual([]);
  });

  it("formats largest chunk summaries in deterministic size order", () => {
    const result = analyzeBundleScan(
      {
        assets: [
          { name: "assets/workflow.js", sizeKb: 220 },
          { name: "assets/vendor-react.js", sizeKb: 500 },
          { name: "assets/editor-monaco.js", sizeKb: 500 },
          { name: "assets/settings.js", sizeKb: 120 },
        ],
      },
      { largestChunkLimit: 3 },
    );

    expect(result.largestChunks.map((asset) => asset.name)).toEqual([
      "assets/editor-monaco.js",
      "assets/vendor-react.js",
      "assets/workflow.js",
    ]);
    expect(formatBundleScanSummary(result)).toContain("- assets/editor-monaco.js: 500 kB");
  });

  it("keeps unknown warnings visible instead of suppressing them", () => {
    const result = analyzeBundleScan({
      assets: [{ name: "assets/app.js", sizeKb: 100 }],
      warnings: [
        {
          code: "SYNTHETIC_NEW_WARNING",
          message: "Bundler emitted a warning this helper does not know yet.",
          file: "apps/web/app/routes/dashboard.tsx",
        },
      ],
    });

    expect(result.unknownWarnings).toHaveLength(1);
    expect(result.unknownWarnings[0]).toMatchObject({
      class: "unknown",
      suppressed: false,
      code: "SYNTHETIC_NEW_WARNING",
    });
    expect(formatBundleScanSummary(result)).toContain(
      "- SYNTHETIC_NEW_WARNING: Bundler emitted a warning this helper does not know yet.",
    );
  });
});