Untitled

async function checkEIPCredit() {
    const myHeaders = new Headers();
    myHeaders.append("Accept", "application/json, text/plain, */*");
    myHeaders.append("Accept-Language", "en-US,en;q=0.9");

    // Get the current cookies and insert them into the request.
    const cookies = document.cookie;
    if (cookies) {
        myHeaders.append("Cookie", cookies);
    }

    const data = JSON.stringify({});
    const requestOptions = {
        method: "POST",
        headers: myHeaders,
        redirect: "follow",
        body: data,
        credentials: "include"
    };

    try {
        // Send T-Mobile the request to check current EIP credit availability.
        const responseEIP = await fetch("https://my.t-mobile.com/apps/mytmobile/eservice/servlet/AALEligiblity?action=getAALEligibility", requestOptions);

        // Check if the response is okay (status code 200-299)
        if (!responseEIP.ok) {
            throw new Error(`HTTP error! Status: ${responseEIP.status}`);
        }

        const resultEIP = await responseEIP.json();
        const availableEIP = parseFloat(resultEIP.equipmentCreditAvailable);

        // Send T-Mobile the request to get all current financing plans.
        const responsePlan = await fetch("https://www.t-mobile.com/apps/mytmobile/eservice/servlet/EquipmentPlan", requestOptions);

        // Check if the response is okay (status code 200-299)
        if (!responsePlan.ok) {
            throw new Error(`HTTP error! Status: ${responsePlan.status}`);
        }

        const resultPlan = await responsePlan.json();
        const activePlans = resultPlan.eipDetails.eipDetails.activePlanArray;
        
        let planBalance = 0;

        // Find out the current balance owed on each device and add it to the plan balance.
        for (const plan of activePlans) {
            const deviceInfoArray = plan.deviceInfoArray;
            for (const deviceInfo of deviceInfoArray) {
                const deviceBalance = parseFloat(deviceInfo.devicePlanBalance);
                if (!isNaN(deviceBalance)) {
                    planBalance += deviceBalance;
                }
            }
        }

        // Convert the current plan balance to have two decimal places to get the exact plan balance owed.
        planBalance = parseFloat(planBalance.toFixed(2));

        console.log(`Plan Balance: ${planBalance}`);
        console.log(`Available EIP: ${availableEIP}`);

        // Bring up a window showing the available EIP limit, the amount used, and how much is issued to the user in total.
        alert(`Available Equipment Credit: $${availableEIP.toFixed(2)}\nPlan Balance $${planBalance.toFixed(2)}\nTotal EIP Credit: $${(planBalance + availableEIP).toFixed(2)}`);

    } catch (error) {
        console.error("Error fetching EIP credit:", error);
    }
}

checkEIPCredit();