import assert from "node:assert/strict";
import { readFileSync } from "node:fs";
import { createRequire } from "node:module";
import vm from "node:vm";

const require = createRequire(new URL("../../../govoplan-core/webui/package.json", import.meta.url));
const ts = require("typescript");
const read = (path) => readFileSync(new URL(path, import.meta.url), "utf8");
const plain = (value) => JSON.parse(JSON.stringify(value));

function evaluate(source, fileName) {
  const exports = {};
  const compiled = ts.transpileModule(source, {
    fileName,
    compilerOptions: { module: ts.ModuleKind.CommonJS, target: ts.ScriptTarget.ES2022, jsx: ts.JsxEmit.ReactJSX }
  }).outputText;
  vm.runInNewContext(compiled, { exports, require: () => ({}) }, { filename: fileName });
  return exports;
}

const api = evaluate(read("../src/api/views.ts"), "views.ts");
const admin = read("../src/features/views/ViewsAdminPanel.tsx");
// Exercise the real private revision/dirty-state functions without mounting or making API calls.
const helpers = evaluate(`${admin}\nexport { revisionPresentation, presentationKey };`, "ViewsAdminPanel.tsx");
const layout = {
  contract_version: "1",
  order: ["separator:work", "files.nav.files", "tasks.nav.tasks"],
  hidden: ["mail.nav.mail"],
  locked: [],
  separators: [{ id: "separator:work", label: "Meine Arbeit" }]
};
for (const navigation of [null, layout, { ...layout, separators: [] }, { contract_version: "1", order: [], hidden: [] }]) {
  const presentation = { navigation, navigationMode: "grouped" };
  const wire = api.presentationToApi(presentation);
  assert.deepEqual(plain(api.presentationFromApi(wire).navigation), navigation, "Effective API projection preserves null, inherited groups, explicit flat, labels and ordered entries");
  const revision = helpers.revisionPresentation(wire, []);
  assert.deepEqual(plain(revision.navigation), navigation, "Opening a saved revision preserves its navigation preferences");
  assert.equal(helpers.presentationKey(revision), helpers.presentationKey(presentation), "Round-trip does not invent dirty state");
}
assert.equal(helpers.revisionPresentation(undefined, []).navigation, null, "Legacy revisions inherit navigation");
const saved = helpers.presentationKey({ navigation: layout });
for (const changed of [
  { ...layout, order: [...layout.order].reverse() },
  { ...layout, hidden: [] },
  { ...layout, separators: [] },
  { ...layout, separators: [{ ...layout.separators[0], label: "Changed" }] },
  null
]) {
  assert.notEqual(helpers.presentationKey({ navigation: changed }), saved, "Every navigation edit or inheritance reset participates in Save/dirty guards");
}
assert.match(admin, /<NavigationPreferenceEditor\s+scope="view"/);
assert.ok(admin.includes("configurableNavigationItemsForModules(modules)"));
assert.ok(admin.includes("productAreas={navigationProductAreas}"));
assert.ok(admin.includes("disabled={disabled || customNavigation}"), "Conflicting legacy layout controls disable while custom navigation is configured");
assert.ok(admin.includes("disabled={disabled || required}"), "Surface visibility remains separate from navigation ordering");
for (const key of ["navigation_editor_help", "product_areas_custom_navigation_help"]) {
  assert.equal(read("../src/i18n/generatedTranslations.ts").split(`"i18n:govoplan-views.${key}":`).length - 1, 2, "Shared layout guidance has English and German text");
}
console.log("Views shared navigation revision, inheritance, API and dirty-state contract passed.");