const { test } = require('node:test');
const assert = require('node:assert/strict');
const fs = require('node:fs');
const path = require('node:path');

const root = path.join(__dirname, '..');

function read(relativePath) {
  return fs.readFileSync(path.join(root, relativePath), 'utf8');
}

test('api models endpoint preserves saved default in model list', () => {
  const server = read('server.js');
  assert.match(server, /var defaultOverride = await db\.getSetting\('models\.default'\)/);
  assert.match(server, /models\.push\(\{ id: defaultOverride, name: defaultOverride \+ ' \(saved default\)'/);
  assert.match(server, /defaultModel: defaultOverride \|\| DEFAULT_MODEL/);
});

test('lazy-loaded tab model selectors apply admin default', () => {
  const app = read('public/js/app.js');
  const index = read('public/index.html');
  assert.match(app, /window\._defaultModelId = ''/);
  assert.match(app, /window\._defaultModelId = defaultModelId/);
  assert.match(app, /window\._buildModelOptions\(sel\)/);
  assert.match(app, /selectEl\.value = window\._defaultModelId/);
  assert.match(app, /saved\.textContent = window\._defaultModelId \+ ' \(saved default\)'/);
  assert.doesNotMatch(index, /global-model-select|model-cost-badge/);
});

test('top bar model selector is removed and omitted selections use backend default', () => {
  const app = read('public/js/app.js');
  const selector = app.match(/function getSelectedModel\(\) \{[\s\S]*?\n\}/)[0];
  assert.doesNotMatch(selector, /global-model-select|gemini-2\.5-flash/);
  assert.match(selector, /return undefined/);
});

test('learning hub model selector uses shared tab model options', () => {
  const learningHub = read('public/js/learningHub.js');
  const aiPanelController = read('public/js/learningHub/aiPanelController.js');
  assert.match(learningHub, /createAiPanelController\(/);
  assert.match(aiPanelController, /window\._buildModelOptions\(sel\)/);
  assert.doesNotMatch(learningHub, /global-model-select|globalSel\.innerHTML/);
  assert.match(learningHub, /if \(model\) formData\.append\('model', model\)/);
});

test('backend AI calls use admin default when request omits model', () => {
  const ai = read('src/utils/ai.js');
  assert.match(ai, /async function resolveModel\(requestedModel\)/);
  assert.match(ai, /await db\.getSetting\('models\.default'\)/);
  assert.match(ai, /var model = await resolveModel\(requestedModel\)/g);
  assert.match(ai, /await assertModelAllowed\(model, options\)/g);
});

test('personal notes voice generation sends selected model only when populated', () => {
  const recorder = read('public/js/notes/recorder.js');
  assert.match(recorder, /var modelEl = document\.getElementById\('notes-model-select'\)/);
  assert.match(recorder, /options\.noteFromVoice\(\{ transcript: resp\.text, model: selectedModel \|\| undefined \}\)/);
});