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

const { fetchWeatherLocationForecast } = require('../src/data/weather');

test('Open-Meteo hourly forecast starts at the current hour and spans 24 hours', async () => {
  const originalFetch = global.fetch;
  const originalDateNow = Date.now;
  let requestUrl;
  global.fetch = async function (url) {
    requestUrl = new URL(url);
    return { ok: true, json: async function () { return { hourly: { time: [] } }; } };
  };
  Date.now = function () { return new Date('2026-08-28T12:34:00Z').getTime(); };

  try {
    await fetchWeatherLocationForecast({ query: async function () { return [[]]; } }, {
      latitude: 51.5,
      longitude: -0.1,
      timezone: 'Europe/London',
      provider: 'open-meteo'
    });
  } finally {
    global.fetch = originalFetch;
    Date.now = originalDateNow;
  }

  assert.equal(requestUrl.searchParams.get('forecast_hours'), '24');
  assert.equal(requestUrl.searchParams.get('forecast_days'), '7');
});

test('weather forecast preview only shows the fetch hint without a snapshot', () => {
  const template = fs.readFileSync(path.join(__dirname, '..', 'src', 'web', 'views', 'data-sources', 'weather', 'forecast-preview.hbs'), 'utf8');

  assert.match(template, /\{\{#if weatherPreview\.hasSnapshot\}\}[\s\S]*weather-daily-forecast[\s\S]*weather-hourly-forecast[\s\S]*\{\{\/if\}\}/);
  assert.match(template, /Daily and hourly forecasts will appear here after the first successful fetch\./);
});