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Backs both /get-information (~3s) and\n// /get-information-slow (~20s); see README.md for the API options considered.\n//\n// Weather → Open-Meteo (geocoding + forecast) — no key, no rate limit.\n// Headlines → Hacker News (Firebase) API — no key, consistently low latency.\n\nimport { logRequest } from \"./db.ts\";\nimport { readJson } from \"./api.ts\";\nimport { loadSettingsWithDefaults } from \"./settings-store.ts\";\nimport { isRecord, jsonOk } from \"./shared.ts\";\n\nconst FETCH_TIMEOUT_MS = 4_000; // per external call; keeps worst-case bounded\nconst HEADLINES_LIMIT = 5;\n\n// ------------------------------------------------------------------------------\n// fetchers — Open-Meteo (weather) + Hacker News (headlines), both free/keyless\n// ------------------------------------------------------------------------------\n\nexport interface WeatherReport {\n location: string;\n country?: string;\n temperatureC: number;\n windKph: number;\n humidityPct: number;\n conditions: string;\n source: \"open-meteo.com\";\n}\n\nconst WMO_CONDITIONS: Record = {\n 0: \"Clear sky\",\n 1: \"Mainly clear\",\n 2: \"Partly cloudy\",\n 3: \"Overcast\",\n 45: \"Fog\",\n 48: \"Depositing rime fog\",\n 51: \"Light drizzle\",\n 53: \"Moderate drizzle\",\n 55: \"Dense drizzle\",\n 61: \"Slight rain\",\n 63: \"Moderate rain\",\n 65: \"Heavy rain\",\n 71: \"Slight snow\",\n 73: \"Moderate snow\",\n 75: \"Heavy snow\",\n 80: \"Slight rain showers\",\n 81: \"Moderate rain showers\",\n 82: \"Violent rain showers\",\n 95: \"Thunderstorm\",\n 96: \"Thunderstorm with slight hail\",\n 99: \"Thunderstorm with heavy hail\",\n};\n\n/** Shape of `geocoding-api.open-meteo.com/v1/search` — only the fields we read. */\ninterface GeocodeResult {\n results?: Array<{ name: string; latitude: number; longitude: number; country?: string }>;\n}\n\n/** Shape of `api.open-meteo.com/v1/forecast` (current-conditions block only). */\ninterface ForecastResult {\n current?: {\n temperature_2m: number;\n weather_code: number;\n wind_speed_10m: number;\n relative_humidity_2m: number;\n };\n}\n\nasync function fetchWeather(location: string): Promise {\n try {\n const geo = await fetchJson(\n `https://geocoding-api.open-meteo.com/v1/search?name=${encodeURIComponent(location)}` +\n `&count=1&language=en&format=json`,\n );\n const place = geo.results?.[0];\n if (!place) return { error: `No location match for \"${location}\"` };\n\n const fc = await fetchJson(\n `https://api.open-meteo.com/v1/forecast?latitude=${place.latitude}&longitude=${place.longitude}` +\n `¤t=temperature_2m,weather_code,wind_speed_10m,relative_humidity_2m&timezone=auto`,\n );\n const cur = fc.current;\n if (!cur) return { error: \"Forecast unavailable\" };\n\n return {\n location: place.name,\n country: place.country,\n temperatureC: cur.temperature_2m,\n windKph: cur.wind_speed_10m,\n humidityPct: cur.relative_humidity_2m,\n conditions: WMO_CONDITIONS[cur.weather_code] ?? `WMO code ${cur.weather_code}`,\n source: \"open-meteo.com\",\n };\n } catch (err) {\n return { error: errMessage(err) };\n }\n}\n\n// headlines — Hacker News (Firebase-hosted) API: top story ids, then titles ---\n\nexport interface Headline {\n title: string;\n source: string;\n url: string;\n}\n\nconst HN_BASE = \"https://hacker-news.firebaseio.com/v0\";\n\n/** Shape of `hacker-news.firebaseio.com/v0/item/.json` — fields we read. */\ninterface HnItem {\n title?: string;\n url?: string;\n id?: number;\n}\n\nasync function fetchHeadlines(): Promise {\n try {\n const ids = await fetchJson(`${HN_BASE}/topstories.json`);\n const items = await Promise.all(\n ids.slice(0, HEADLINES_LIMIT).map((id) => fetchJson(`${HN_BASE}/item/${id}.json`)),\n );\n return items.map((item) => ({\n title: String(item.title ?? \"\"),\n source: \"news.ycombinator.com\",\n url: typeof item.url === \"string\"\n ? item.url\n : `https://news.ycombinator.com/item?id=${item.id}`,\n }));\n } catch (err) {\n return { error: errMessage(err) };\n }\n}\n\n// ------------------------------------------------------------------------------\n// payload + handler factory\n// ------------------------------------------------------------------------------\n\nexport interface InformationPayload {\n location: string;\n weather: WeatherReport | { error: string };\n headlines: Headline[] | { error: string };\n elapsedMs: number;\n generatedAt: string;\n}\n\n/** Fetch weather + headlines in parallel, then pad the response so total time\n * is at least `minMs` — demonstrates a slow downstream integration without\n * depending on the (fast) public APIs actually being slow. */\nasync function buildInformationPayload(\n location: string,\n minMs: number,\n): Promise {\n const start = Date.now();\n const [weather, headlines] = await Promise.all([fetchWeather(location), fetchHeadlines()]);\n const remaining = minMs - (Date.now() - start);\n if (remaining > 0) await sleep(remaining);\n return {\n location,\n weather,\n headlines,\n elapsedMs: Date.now() - start,\n generatedAt: new Date().toISOString(),\n };\n}\n\n/** Build a POST handler returning weather + headlines, padded to ≥ `targetMs`.\n * Location comes from the request body (`{\"location\": \"...\"}`) or falls back\n * to the mock user's configured location (Settings tab). */\nexport function makeInformationHandler(targetMs: number): (req: Request) => Promise {\n return async (req: Request): Promise => {\n const body = await readJson(req);\n const settings = await loadSettingsWithDefaults();\n const location = isRecord(body) && typeof body.location === \"string\" && body.location.trim()\n ? 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