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

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

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

test('dashboard starts live polling and exposes required controls', () => {
    const html = read('frontend/index.html');
    const dashboard = read('frontend/dashboard.js');

    assert.match(html, /id="history-interval"/);
    assert.match(dashboard, /updateDashboard\(\);/);
    assert.match(
        dashboard,
        /setInterval\(updateDashboard,\s*POLLING_INTERVAL_MS\)/
    );
});

test('dashboard HTML has balanced structural containers', () => {
    const html = read('frontend/index.html');
    const openDivs = (html.match(/<div\b/g) || []).length;
    const closeDivs = (html.match(/<\/div>/g) || []).length;
    const openSections = (html.match(/<section\b/g) || []).length;
    const closeSections = (html.match(/<\/section>/g) || []).length;

    assert.equal(openDivs, closeDivs);
    assert.equal(openSections, closeSections);
});

test('terminal output does not append untrusted HTML', () => {
    const service = read('frontend/ezo-service.js');

    assert.doesNotMatch(service, /terminalOutput\.innerHTML/);
    assert.match(service, /line\.textContent = message/);
});

test('sensor Makefiles reference their real implementation objects', () => {
    assert.match(read('sensors/EZOPH/Makefile'), /OBJ=main\.o ezoph\.o/);
    assert.match(read('sensors/EZODO/Makefile'), /OBJ=main\.o ezodo\.o/);
    assert.match(read('sensors/EZOEC/Makefile'), /OBJ=main\.o ezoec\.o/);
    assert.ok(read('sensors/EZODO/main.c').trim().length > 0);
});