import React, {useState} from 'react'; // FishTime.jsx // Single-file React component (Tailwind-ready) that checks weather for a ZIP code // and gives a simple "Fishing Score" (0-100) and recommendation. // Requirements (developer / user): // - This example uses OpenWeatherMap's Geocoding + One Call API. // - Create an account at https://openweathermap.org/ and get an API key. // - Add your API key to the REACT_APP_OWM_KEY environment variable or paste into the UI (demo only). // How it works (brief): // 1. Geocode ZIP -> lat/lon using OWM Geocoding API // 2. Fetch 7-day daily forecast (One Call) for lat/lon // 3. Compute a fishing score from weather factors (precipitation chance, wind, temp, cloud cover, moon phase) // 4. Display scores and short tips export default function FishTime() { const [zip, setZip] = useState(''); const [apiKey, setApiKey] = useState(process.env.REACT_APP_OWM_KEY || ''); const [loading, setLoading] = useState(false); const [error, setError] = useState(null); const [forecast, setForecast] = useState(null); // scoring weights (tweakable) const WEIGHTS = { precip: 0.30, // probability of precipitation (POP) wind: 0.25, // wind speed temp: 0.20, // temperature suitability clouds: 0.15, // cloud cover moon: 0.10 // moon phase }; async function handleCheck(e) { e.preventDefault(); setError(null); setForecast(null); if (!zip || !/^[0-9]{5}$/.test(zip)) return setError('Please enter a valid 5-digit ZIP code.'); if (!apiKey) return setError('Please add your OpenWeatherMap API key (top-right).'); setLoading(true); try { // 1) Geocode ZIP -> lat/lon const geoRes = await fetch(`https://api.openweathermap.org/geo/1.0/zip?zip=${zip},US&appid=${apiKey}`); if (!geoRes.ok) throw new Error('Failed to geocode ZIP.'); const geo = await geoRes.json(); const {lat, lon, name} = geo; // 2) One Call (daily) - use exclude to save bandwidth const onecall = await fetch(`https://api.openweathermap.org/data/2.5/onecall?lat=${lat}&lon=${lon}&exclude=minutely,hourly,alerts&units=imperial&appid=${apiKey}`); if (!onecall.ok) throw new Error('Failed to fetch forecast.'); const data = await onecall.json(); // We'll analyze the daily array (today + 7 days) const daily = data.daily || []; setForecast({place: name || `${lat.toFixed(2)},${lon.toFixed(2)}`, daily}); } catch (err) { console.error(err); setError(err.message || 'Unknown error'); } finally { setLoading(false); } } function scoreDay(day) { // day is an object from One Call daily // Values: day.pop (probability of precipitation 0-1), day.wind_speed (mph), day.temp.day (F), day.clouds (0-100), day.moon_phase (0-1) // Convert each to a 0-1 where 1 is perfect fishing conditions, then build weighted sum. // precipitation: best when pop is low const pop = day.pop ?? 0; // 0..1 const precipScore = Math.max(0, 1 - pop); // 1 when 0 pop, 0 when 1 pop // wind: best when calm. We'll assume <8 mph ideal, 8-20 okay, >20 bad const w = day.wind_speed ?? 0; let windScore = 1; if (w <= 8) windScore = 1; else if (w <= 20) windScore = 1 - (w - 8) / 12 * 0.75; // degrade to 0.25 else windScore = 0.1; // temp: fish species differ; we'll assume comfortable 50-75 F ideal. const t = day.temp?.day ?? (day.temp || {}).day ?? 60; let tempScore = 0; if (t >= 50 && t <= 75) tempScore = 1; else if (t >= 40 && t < 50) tempScore = 0.7; else if (t > 75 && t <= 85) tempScore = 0.6; else tempScore = 0.3; // clouds: some anglers like overcast (fish feed more). We'll give higher score for partial/overcast. const c = (day.clouds ?? 50) / 100; // 0..1 // ideal: 0.4 - 0.9 (40% - 90%). Very clear or very dark not ideal. let cloudScore = 0.5; if (c >= 0.4 && c <= 0.9) cloudScore = 1; else cloudScore = Math.max(0.2, 1 - Math.abs(c - 0.65) * 1.5); // moon phase: 0 new, 0.5 full. Some anglers prefer new or full (feeding). We'll treat 0 or 0.5 as slightly better. const m = day.moon_phase ?? 0.5; // 0..1 // score peaks at 0 and 0.5. compute distance to nearest of {0,0.5,1} const distToNew = Math.min(Math.abs(m - 0), Math.abs(m - 1)); const distToFull = Math.abs(m - 0.5); const moonFavor = Math.min(distToNew, distToFull); // 0 is best const moonScore = 1 - Math.min(1, moonFavor * 2.0); // when moonFavor=0 =>1, when 0.5=>0 // combine const combined = (precipScore * WEIGHTS.precip) + (windScore * WEIGHTS.wind) + (tempScore * WEIGHTS.temp) + (cloudScore * WEIGHTS.clouds) + (moonScore * WEIGHTS.moon); // normalize 0..1 -> 0..100 return Math.round(combined * 100); } function niceTip(score) { if (score >= 80) return 'Great time to fish — calm, comfortable, low chance of rain.'; if (score >= 60) return 'Good conditions — bring light layers and polarized sunglasses.'; if (score >= 40) return 'Mixed conditions — consider sheltered spots or slower presentations.'; return 'Poor conditions — heavy wind/precipitation or extreme temps. Consider rescheduling.'; } return ( ); } /* README (short) 1) Create a new React app (Vite or CRA). Place this component as src/FishTime.jsx and import it in App.jsx. 2) Install Tailwind or adjust classes to your CSS system. 3) Set REACT_APP_OWM_KEY in your environment, or paste your key in the UI for demo. 4) Run the app and enter a US ZIP code to see the 7-day fishing outlook. Notes & improvements: - Add caching of geocode results and daily barometer trends for better accuracy. - Add species presets (bass, trout, walleye) with different temp/wind preferences. - Add a small backend to securely store the API key and handle rate limits. */