function doAccountAction(requestData, successMessage, failureMessage, silent=false) {
    return fetch('/account', {
        method: 'POST',
        body: requestData,
    })
        .then(response => {
            if (!response.ok) {
                throw new Error(`HTTP error! Status: ${response.status}`);
            }
            return response.json();
        })
        .then(data => {
            if(!silent) {
                handleResponse(data, successMessage, failureMessage);
            }
            return data; // Returning the response data for further processing
        })
        .catch((error) => {
            console.error('Error:', error);
        });
}



function handlePageResponse(data){
    if(data.Navigation){
        document.getElementById("navbar").innerHTML = data.Navigation;
    }
    if(data.Page){
        document.getElementById("pagearea").innerHTML = data.Page;
        // if(data.PageLocation){
        //     history.pushState({}, "", data.PageLocation);
        // }
    }
}

function doPageAction(requestData){
    return fetch('/page', {
        method: 'POST',
        body: requestData,
    })
        .then(response => {
            if (!response.ok) {
                throw new Error(`HTTP error! Status: ${response.status}`);
            }
            return response.json();
        })
        .then(data => {
                handlePageResponse(data);
        })
        .catch((error) => {
            console.error('Error:', error);
        });
}

function displayList(data, element_id, delete_function=null) {
    const tableContainer = document.getElementById(element_id);
    tableContainer.innerHTML = ""; // Clear previous content

    const table = document.createElement("table");
    table.classList.add("list-table");

    // Create header row
    const headerRow = table.insertRow(0);
    for (const key in data[0]) {
        const th = document.createElement("th");
        th.appendChild(document.createTextNode(key));
        headerRow.appendChild(th);
    }

    if(typeof delete_function === "function") {
        const th = document.createElement("th");
        th.appendChild(document.createTextNode("Delete"));
        headerRow.appendChild(th);
    }

    // Create data rows
    for (const line of data) {
        const dataRow = table.insertRow();
        for (const key in line) {
            const td = document.createElement("td");
            td.appendChild(document.createTextNode(line[key]));
            dataRow.appendChild(td);
        }
        if(typeof delete_function === "function") {
            const td = document.createElement("td");
            let delete_button = document.createElement('button');
            delete_button.textContent = "Delete"
            delete_button.onclick = function (){
                delete_function(line.ID);
            }
            td.appendChild(delete_button);
            dataRow.appendChild(td);
        }
    }

    tableContainer.appendChild(table);
}

function handleResponse(data, SuccessMessage, failureMessage) {
    const StatusMessageElement = document.getElementById("StatusMessage");

    if (data.Status === 'Success') {
        StatusMessageElement.innerText = SuccessMessage;
    } else {
        StatusMessageElement.innerText = failureMessage;
    }

    // Show the status message
    StatusMessageElement.style.display = "block";
    setTimeout(() => {
        // Hide the status message after 3 seconds
        StatusMessageElement.style.opacity = "0";
        setTimeout(() => {
            StatusMessageElement.style.display = "none";
            // Reset opacity for future messages
            StatusMessageElement.style.opacity = "1";
        }, 500);
    }, 3000);
}

function navigateTo(site, page){
    const data = new URLSearchParams();
    data.append("action", "getPage");
    data.append("site", site);
    data.append("page", page);
    doPageAction(data).then(() => {
        localStorage.setItem("currentSite", site);
        localStorage.setItem("currentPage", page);
        onPageLoad();
        // Expected output: "Success!"
    });
}

function softReload(){
    navigateTo(localStorage.getItem("currentSite"), localStorage.getItem("currentPage"));
}

function refreshNavbar(){
    const data = new URLSearchParams();
    data.append("action", "getNavigation");
    doPageAction(data);
}

function logout() {
    const data = new URLSearchParams();
    data.append("action", "logout");

    doAccountAction(data, "Logout Successful!", "Logout failed.").then(() => {
        refreshNavbar();
        navigateTo("", localStorage.getItem("defaultPage"));
        // Expected output: "Success!"
    });
}

function initAjax() {
    let links = document.querySelectorAll('.navsite_link, .navpage_link');

// Add click event listener to each link
    links.forEach(function (link) {
        link.addEventListener('click', function (e) {
            e.preventDefault();

            // Get page and site information
            let site = this.dataset.site;
            let page = this.dataset.page;

            if (site && page) {
                navigateTo(site, page);
            }

            // You can use this information to update the URL or perform other actions
        });
    });
    onPageLoad();
}
document.addEventListener('DOMContentLoaded', initAjax);


function onPageLoad(){
    let currentSite = localStorage.getItem("currentSite");
    let currentPage = localStorage.getItem("currentPage");
    if(currentSite === "home" && currentPage === "settings"){
        if(document.getElementById("user-settings")){
            getUserInfo();
        }
        if(document.getElementById("admin-settings")){
            listActivationCodes();
            listUsers();
        }
    }
}

//Login

function login() {
    const email = document.getElementById("login_email").value;
    const password = document.getElementById("login_password").value;
    doLogin(email, password);
    refreshNavbar();
    softReload();
}

function doLogin(email, password) {
    const data = new URLSearchParams();
    data.append("action", "login");
    data.append("email", email);
    data.append("password", password);

    doAccountAction(data, "Login Successful!", "Login failed. Please check your credentials.");
}

function register() {
    const firstName = document.getElementById("register_firstName").value;
    const lastName = document.getElementById("register_lastName").value;
    const email = document.getElementById("register_email").value;
    const password = document.getElementById("register_password").value;
    const activationToken = document.getElementById("register_activationToken").value;

    const data = new URLSearchParams();
    data.append("action", "register");
    data.append("firstname", firstName);
    data.append("lastname", lastName);
    data.append("email", email);
    data.append("password", password);
    data.append("activation_token", activationToken);

    doRegister(data);
}

function doRegister(requestData) {
    doAccountAction(requestData, "Registration Successful!", "Registration failed.");
}


//User settings start

function changePassword() {
    const oldPassword = document.getElementById("changeOldPassword").value;
    const newPassword = document.getElementById("changeNewPassword").value;

    const data = new URLSearchParams();
    data.append("action", "change_password");
    data.append("old_password", oldPassword);
    data.append("new_password", newPassword);

    doChangePassword(data, "Password change Successful!", "Password change failed.");
}

function doChangePassword(requestData, successMessage, failureMessage) {
    doAccountAction(requestData, successMessage, failureMessage);
}

function updateUserProfile() {
    const firstName = document.getElementById("updateFirstName").value;
    const lastName = document.getElementById("updateLastName").value;
    const nickname = document.getElementById("updateNickname").value;
    const minecraftNick = document.getElementById("updateMinecraftNick").value;

    const data = new URLSearchParams();
    data.append("action", "update_user_profile");
    data.append("first_name", firstName);
    data.append("last_name", lastName);
    data.append("nickname", nickname);
    data.append("minecraft_nick", minecraftNick);

    doAccountAction(data, "Profile update Successful!", "Profile update failed.");
}

function updateEmail() {
    const newEmail = document.getElementById("updateNewEmail").value;

    const data = new URLSearchParams();
    data.append("action", "update_user_email");
    data.append("email", newEmail);

    doAccountAction(data, "Email update Successful!", "Email update failed.");
}

function populateUserInfoFields(userData) {
    document.getElementById("updateFirstName").value = userData.FirstName || "";
    document.getElementById("updateLastName").value = userData.LastName || "";
    document.getElementById("updateNickname").value = userData.Nickname || "";
    document.getElementById("updateMinecraftNick").value = userData.MinecraftNick || "";
    document.getElementById("updateNewEmail").value = userData.Email || "";
}

async function getUserInfo() {
    const data = new URLSearchParams();
    data.append("action", "get_user_info");

    const result = await doAccountAction(data, "User info retrieved Successfully!", "User info retrieval failed.", true);

    if (result && result.Status === "Success") {
        populateUserInfoFields(result.UserInfo);
    }
}

//User settings end

//Admin settings start

async function addActivationCodes() {
    const count = document.getElementById("activationCodeCount").value;

    const data = new URLSearchParams();
    data.append("action", "add_activation_codes");
    data.append("count", count);

    const result = await doAccountAction(data, "Activation codes added Successfully!", "Activation codes addition failed.");

    displayList(result.ActivationCodes, "codeListTable", deleteActivationCode);
}

async function listUsers() {
    const data = new URLSearchParams();
    data.append("action", "list_users");

    const result = await doAccountAction(data, "User list retrieved Successfully!", "User list retrieval failed.");

    if (result && result.Status === "Success") {
        displayList(result.Users, "userListTable", deleteUser);
    }
}


async function listActivationCodes() {
    const data = new URLSearchParams();
    data.append("action", "list_activation_codes");

    const result = await doAccountAction(data, "Activation code list retrieved Successfully!", "Activation code list retrieval failed.");

    displayList(result.ActivationCodes, "codeListTable", deleteActivationCode);
}

function deleteUser(userId) {

    const data = new URLSearchParams();
    data.append("action", "delete_user");
    data.append("user_id", userId);

    doAccountAction(data, "User deleted Successfully!", "User deletion failed.");
    listUsers();
}

function deleteActivationCode(activationCode) {

    const data = new URLSearchParams();
    data.append("action", "delete_activation_code");
    data.append("activation_code", activationCode);

    doAccountAction(data, "Activation code deleted Successfully!", "Activation code deletion failed.");
    listActivationCodes();
}
//Admin settings end