import { expect, test } from "bun:test";
import { resolve } from "node:path";

test("installed Studio previews resolve exact Linux filenames for every component", () => {
  const probe = `
    import { mock } from "bun:test";
    import { readFileSync, readdirSync } from "node:fs";
    import { dirname, basename } from "node:path";
    import { uiComponentsDir } from "@wrnexus/ui/registry";
    import { CORE_DESIGN_SYSTEMS } from "@wrnexus/design-system";
    const directory = uiComponentsDir(), names = new Set(readdirSync(directory)), originalRead = readFileSync;
    let checked = 0;
    mock.module("node:fs", () => ({ readFileSync(path, ...options) {
      if (typeof path === "string" && dirname(path) === directory && path.endsWith(".wrn")) {
        if (!names.has(basename(path))) throw Error("Case-sensitive component lookup failed: " + basename(path));
        checked++;
      }
      return originalRead(path, ...options);
    }}));
    const { createStudioHandler } = await import("@wrnexus/design-studio/server");
    const handler = await createStudioHandler();
    for (const options of [{}, ...Array.from({length:7}, (_, page) => ({content:"catalog", page}))]) {
      const response = await handler(new Request("http://127.0.0.1/api/preview", {
        method:"POST", headers:{"content-type":"application/json"}, body:JSON.stringify({system:CORE_DESIGN_SYSTEMS.soft,...options})
      }));
      if (!response.ok) throw Error(await response.text());
    }
    if (checked < 104) throw Error("Incomplete installed preview coverage: " + checked);
    console.log("All 104 installed preview components pass case-sensitive file lookup.");
  `;
  const result = Bun.spawnSync([process.execPath, "--eval", probe], {
    cwd: resolve(import.meta.dir, ".."),
    stdout: "pipe",
    stderr: "pipe",
  });
  expect(new TextDecoder().decode(result.stderr)).not.toContain(
    "Case-sensitive component lookup failed",
  );
  expect(result.exitCode).toBe(0);
  expect(new TextDecoder().decode(result.stdout)).toContain(
    "All 104 installed preview components",
  );
});