function hideLoginWindow() {
    document.getElementById("signup-window").style.display = "none"
}

async function registerUser() {
    let username = document.getElementById("user-name").value
    let password = document.getElementById("user-pwd").value
    errorField = document.getElementById("login-error")

    console.log("Registration started");

    fetch("/create/user/" + username + "/" + password, { method: 'POST' })
    .then(function(response) {
        if (response.status == 200) { // Success
            return response.text()
        }
        if (response.status == 400) { // Bad request
            throw Error("The request had an error")
        }
        if (response.status == 409) { // Conflict
            throw Error("A user with the same name is already registered")
        }
        throw Error("Unexpected response: " + response.statusText)
    }).then(function(text) {
        localStorage.setItem('token', text)
        hideLoginWindow()
        console.log("Registered")
    }).catch(function(error) {
        errorField.innerHTML = error.message
        console.log(error)
        return
    })
}

function loadExistingSession() {
    console.log("Checking to resume session");
    const token = localStorage.getItem('token');
    if (token) {
        console.log("Resuming session with token " + token);
        resumeSession(token);
    }
}

function resumeSession(token) {

    localStorage.removeItem('token');
    hideLoginWindow()
}

function loginUser() {

}