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import type { SourceModule } from "../registry";
import { getSettings } from "@/lib/store";
import {
WeatherConfig,
WeatherPayload,
type WeatherConfig as Config,
type WeatherPayload as Payload,
} from "@/lib/schemas/sources/weather";
// WMO weather interpretation codes → short text.
const WMO: Record<number, string> = {
0: "Clear", 1: "Mainly clear", 2: "Partly cloudy", 3: "Overcast",
45: "Fog", 48: "Rime fog", 51: "Light drizzle", 53: "Drizzle", 55: "Dense drizzle",
56: "Freezing drizzle", 57: "Freezing drizzle", 61: "Light rain", 63: "Rain", 65: "Heavy rain",
66: "Freezing rain", 67: "Freezing rain", 71: "Light snow", 73: "Snow", 75: "Heavy snow",
77: "Snow grains", 80: "Light showers", 81: "Showers", 82: "Violent showers",
85: "Snow showers", 86: "Snow showers", 95: "Thunderstorm", 96: "Thunderstorm + hail",
99: "Thunderstorm + hail",
};
const codeText = (c: number) => WMO[c] ?? "—";
function resolveLocation(config: Config): { lat: number; lon: number; label: string } | null {
if (config.lat != null && config.lon != null) {
return { lat: config.lat, lon: config.lon, label: config.label ?? "Custom" };
}
const loc = getSettings().location;
if (loc) return { lat: loc.lat, lon: loc.lon, label: loc.label || "Home" };
const envLat = process.env.WEATHER_LAT;
const envLon = process.env.WEATHER_LON;
if (envLat && envLon) return { lat: Number(envLat), lon: Number(envLon), label: "Home" };
return null;
}
function aqiCategory(v: number | null): string {
if (v == null) return "";
if (v <= 50) return "Good";
if (v <= 100) return "Moderate";
if (v <= 150) return "Unhealthy (sensitive)";
if (v <= 200) return "Unhealthy";
if (v <= 300) return "Very Unhealthy";
return "Hazardous";
}
function pollenLevel(v: number): string {
if (v < 10) return "Low";
if (v < 30) return "Moderate";
if (v < 70) return "High";
return "Very High";
}
const POLLEN_KEYS: Array<[string, string]> = [
["grass_pollen", "Grass"],
["birch_pollen", "Birch"],
["alder_pollen", "Alder"],
["ragweed_pollen", "Ragweed"],
["mugwort_pollen", "Mugwort"],
["olive_pollen", "Olive"],
];
const SEVERITY_RANK: Record<string, number> = {
Extreme: 4, Severe: 3, Moderate: 2, Minor: 1, Unknown: 0,
};
function moonPhase(date: Date): { phase: string; emoji: string } {
// Reference new moon: Jan 6 2000 18:14 UTC
const refNewMoon = Date.UTC(2000, 0, 6, 18, 14, 0);
const synodicPeriod = 29.53058867;
const days = (date.getTime() - refNewMoon) / 86_400_000;
const pos = ((days % synodicPeriod) + synodicPeriod) % synodicPeriod;
if (pos < 1.85) return { phase: "New Moon", emoji: "🌑" };
if (pos < 7.38) return { phase: "Waxing Crescent", emoji: "🌒" };
if (pos < 9.22) return { phase: "First Quarter", emoji: "🌓" };
if (pos < 14.77) return { phase: "Waxing Gibbous", emoji: "🌔" };
if (pos < 16.61) return { phase: "Full Moon", emoji: "🌕" };
if (pos < 22.15) return { phase: "Waning Gibbous", emoji: "🌖" };
if (pos < 23.99) return { phase: "Last Quarter", emoji: "🌗" };
return { phase: "Waning Crescent", emoji: "🌘" };
}
export const weatherModule: SourceModule<Config, Payload> = {
kind: "weather",
label: "Weather",
keyless: true,
defaultRefreshSeconds: 1800,
configSchema: WeatherConfig,
payloadSchema: WeatherPayload,
isConfigured: (config) => resolveLocation(config) !== null,
async fetch({ config, signal }) {
const place = resolveLocation(config);
if (!place) throw new Error("No location set — add one in Settings.");
const units = getSettings().units;
const tempUnit = units === "metric" ? "celsius" : "fahrenheit";
const windUnit = units === "metric" ? "kmh" : "mph";
const weatherUrl = new URL("https://api.open-meteo.com/v1/forecast");
weatherUrl.searchParams.set("latitude", String(place.lat));
weatherUrl.searchParams.set("longitude", String(place.lon));
weatherUrl.searchParams.set(
"current",
"temperature_2m,apparent_temperature,weather_code,wind_speed_10m,relative_humidity_2m,uv_index",
);
weatherUrl.searchParams.set(
"daily",
"temperature_2m_max,temperature_2m_min,weather_code,precipitation_probability_max,sunrise,sunset",
);
weatherUrl.searchParams.set(
"hourly",
"temperature_2m,weather_code,precipitation_probability",
);
weatherUrl.searchParams.set("temperature_unit", tempUnit);
weatherUrl.searchParams.set("wind_speed_unit", windUnit);
weatherUrl.searchParams.set("timezone", "auto");
weatherUrl.searchParams.set("forecast_days", "3");
const aqiUrl = new URL("https://air-quality-api.open-meteo.com/v1/air-quality");
aqiUrl.searchParams.set("latitude", String(place.lat));
aqiUrl.searchParams.set("longitude", String(place.lon));
aqiUrl.searchParams.set("timezone", "auto");
aqiUrl.searchParams.set("current", "us_aqi,pm2_5");
aqiUrl.searchParams.set("hourly", POLLEN_KEYS.map(([k]) => k).join(","));
const alertsUrl =
`https://api.weather.gov/alerts/active?point=${place.lat},${place.lon}`;
const [weatherRes, aqiRes, alertsRes] = await Promise.all([
fetch(weatherUrl, { signal }),
fetch(aqiUrl, { signal }).catch(() => null),
fetch(alertsUrl, {
signal,
headers: { "User-Agent": "personal-dashboard/1.0" },
}).catch(() => null),
]);
if (!weatherRes.ok) throw new Error(`Open-Meteo ${weatherRes.status}`);
const j = (await weatherRes.json()) as {
current: {
temperature_2m: number;
apparent_temperature: number;
weather_code: number;
wind_speed_10m: number;
relative_humidity_2m: number;
uv_index: number | null;
};
daily: {
time: string[];
temperature_2m_max: number[];
temperature_2m_min: number[];
weather_code: number[];
precipitation_probability_max: (number | null)[];
sunrise: string[];
sunset: string[];
};
hourly?: {
time: string[];
temperature_2m: number[];
weather_code: number[];
precipitation_probability: (number | null)[];
};
};
// --- AQI + pollen ---
let aqi: number | null = null;
let aqiCat = "";
const pollen: Payload["pollen"] = [];
if (aqiRes?.ok) {
const aq = (await aqiRes.json()) as {
current?: { time?: string; us_aqi?: number | null; pm2_5?: number | null };
hourly?: { time: string[] } & Record<string, (number | null)[]>;
};
aqi = aq.current?.us_aqi ?? null;
aqiCat = aqiCategory(aqi);
if (aq.hourly?.time?.length) {
const nowHour = (aq.current?.time ?? aq.hourly.time[0]).slice(0, 13);
let idx = aq.hourly.time.findIndex((t) => t.slice(0, 13) === nowHour);
if (idx < 0) idx = 0;
for (const [key, label] of POLLEN_KEYS) {
const v = aq.hourly[key]?.[idx];
if (typeof v === "number" && v > 0) {
pollen.push({ label, value: Math.round(v), level: pollenLevel(v) });
}
}
}
}
// --- NWS alerts (US only; non-US locations 404 or error → empty) ---
const alerts: Payload["alerts"] = [];
if (alertsRes?.ok) {
const al = (await alertsRes.json()) as {
features?: Array<{
properties: {
event?: string;
severity?: string;
headline?: string;
ends?: string | null;
};
}>;
};
const raw = (al.features ?? [])
.filter((f) => f.properties.event)
.map((f) => ({
event: f.properties.event!,
severity: f.properties.severity ?? "Unknown",
headline: f.properties.headline,
ends: f.properties.ends ?? null,
}));
raw.sort((a, b) => (SEVERITY_RANK[b.severity] ?? 0) - (SEVERITY_RANK[a.severity] ?? 0));
alerts.push(...raw.slice(0, 3));
}
// --- Daily ---
const daily = j.daily.time.map((date, i) => ({
date,
max: Math.round(j.daily.temperature_2m_max[i]),
min: Math.round(j.daily.temperature_2m_min[i]),
code: j.daily.weather_code[i],
text: codeText(j.daily.weather_code[i]),
precipProb: j.daily.precipitation_probability_max[i] ?? null,
}));
// --- Day-parts strip ---
const today = j.daily.time[0];
const parts: Payload["parts"] = [];
if (j.hourly && today) {
const anchors: Array<[string, number]> = [
["Morning", 8], ["Noon", 12], ["Evening", 18], ["Night", 22],
];
const hours = j.hourly.time
.map((t, i) => ({ t, i, hr: Number(t.slice(11, 13)), day: t.slice(0, 10) }))
.filter((h) => h.day === today && Number.isFinite(h.hr));
for (const [label, anchor] of anchors) {
let best: (typeof hours)[number] | null = null;
for (const h of hours) {
if (!best || Math.abs(h.hr - anchor) < Math.abs(best.hr - anchor)) best = h;
}
if (!best) continue;
const code = j.hourly.weather_code[best.i];
parts.push({
label,
temp: Math.round(j.hourly.temperature_2m[best.i]),
code,
text: codeText(code),
precipProb: j.hourly.precipitation_probability[best.i] ?? null,
});
}
}
// --- Moon phase ---
const moon = moonPhase(new Date());
return {
location: place.label,
units,
current: {
temp: Math.round(j.current.temperature_2m),
feelsLike: Math.round(j.current.apparent_temperature),
code: j.current.weather_code,
text: codeText(j.current.weather_code),
wind: Math.round(j.current.wind_speed_10m),
humidity: j.current.relative_humidity_2m ?? null,
uvIndex: j.current.uv_index != null ? Math.round(j.current.uv_index) : null,
},
daily,
parts,
sunrise: j.daily.sunrise?.[0] ?? null,
sunset: j.daily.sunset?.[0] ?? null,
moonPhase: moon.phase,
moonEmoji: moon.emoji,
aqi,
aqiCategory: aqiCat,
pollen,
alerts,
};
},
};
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