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calorie data persists with the help of local storage #4

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calorie data persists with the help of local storage #4

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19 changes: 15 additions & 4 deletions index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -78,14 +78,14 @@ <h1>Calorie Status</h1>

// user configuration ------
// these will count our calories burned at rest
let calorieCount = 0;
let calorieCount = parseFloat(localStorage.getItem('calorieCount')) || 0;
const hourlyCalorieBurn = 2000 / 24.0; // burned per hour
// goal is to lose 500 kcal/day (i.e. ~1 lb/week)
let desiredDeficitCount = 0;
let desiredDeficitCount = parseFloat(localStorage.getItem('desiredDeficitCount')) || 0;
const hourlyCalorieTargetDeficit = 500 / 24.0;
// --------------------------

let lastUpdateTime = Date.now();
let lastUpdateTime = parseInt(localStorage.getItem('lastUpdateTime')) || Date.now();

function updateCalorieCount() {
const currentTime = Date.now();
Expand All @@ -97,22 +97,33 @@ <h1>Calorie Status</h1>
document.getElementById('deficit-count').innerText = "GOAL: " + desiredDeficitCount.toFixed(2);
let color = calorieCount < desiredDeficitCount ? 'green' : 'red'; // green if met, red otherwise
document.getElementById('deficit-count').style.color = color;

// store the updated values in local storage
localStorage.setItem('calorieCount', calorieCount);
localStorage.setItem('desiredDeficitCount', desiredDeficitCount);
localStorage.setItem('lastUpdateTime', lastUpdateTime.toString());
}

document.getElementById('reset-button').addEventListener('click', () => {
calorieCount = 0;
desiredDeficitCount = 0; // reset the goal counter as well
desiredDeficitCount = 0;
lastUpdateTime = Date.now();
localStorage.setItem('calorieCount', calorieCount);
localStorage.setItem('desiredDeficitCount', desiredDeficitCount);
localStorage.setItem('lastUpdateTime', lastUpdateTime.toString());
updateCalorieCount();
});

document.getElementById('exercise-button').addEventListener('click', () => {
updateCalorieCount();
calorieCount -= 100;
localStorage.setItem('calorieCount', calorieCount);
});

document.getElementById('eat-button').addEventListener('click', () => {
updateCalorieCount();
calorieCount += 100;
localStorage.setItem('calorieCount', calorieCount);
});

setInterval(updateCalorieCount, 500); // update counter every 500ms
Expand Down