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Fix: handle missing CO₂ Signal data safely #1551

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Fix: handle missing CO₂ Signal data safely #1551

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26 changes: 14 additions & 12 deletions 5-browser-extension/solution/src/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -35,37 +35,39 @@ const displayCarbonUsage = async (apiKey, region) => {
try {
await axios
.get('https://api.co2signal.com/v1/latest', {
params: {
countryCode: region,
},
headers: {
//please get your own token from CO2Signal https://www.co2signal.com/
'auth-token': apiKey,
},
params: { countryCode: region },
headers: { 'auth-token': apiKey },
})
.then((response) => {
let CO2 = Math.floor(response.data.data.carbonIntensity);
const data = response?.data?.data;

// ✅ Validate required data before using
if (data?.carbonIntensity == null || data?.fossilFuelPercentage == null) {
throw new Error('Missing carbon intensity or fossil fuel data');
}

let CO2 = Math.floor(data.carbonIntensity);
calculateColor(CO2);

loading.style.display = 'none';
form.style.display = 'none';
myregion.textContent = region;
usage.textContent =
Math.round(response.data.data.carbonIntensity) + ' grams (grams C02 emitted per kilowatt hour)';
Math.round(data.carbonIntensity) + ' grams (grams C02 emitted per kilowatt hour)';
fossilfuel.textContent =
response.data.data.fossilFuelPercentage.toFixed(2) +
data.fossilFuelPercentage.toFixed(2) +
'% (percentage of fossil fuels used to generate electricity)';
results.style.display = 'block';
});
} catch (error) {
console.log(error);
console.warn('Data fetch failed:', error.message);
loading.style.display = 'none';
results.style.display = 'none';
errors.textContent = 'Sorry, we have no data for the region you have requested.';
errors.textContent = 'Sorry, data unavailable for the selected region.';
}
};


// set up api key and region
const setUpUser = async (apiKey, region) => {
localStorage.setItem('apiKey', apiKey);
Expand Down