//
// Init:
//
// Setup quick links
const ql = ["ql0","ql1","ql2","ql3","ql4","ql5","ql6","ql7","ql8","ql9","ql10","ql11"]
storageAvailable("localStorage");
getQl();
// Check if already registered
ifAlreadyRegistered();
// Hide loading
hideLoading();

async function ifAlreadyRegistered() { // If already registered, show this on the page
    if (! await isRegistered()) { return } else {
        document.getElementsByName("eml")[0].placeholder = "Registered";
        document.getElementById("reg_text").textContent = "You are already registered";
        document.getElementById("reg_button").textContent = "Log Out";
    }
}

async function getQl(){ // Fetch Quick Links from localstorage
    var qlOpt = await getQuickLinks()
    if (qlOpt){
        var i = 0
        while (i < 12) {
            if (qlOpt[i] != 'undefined') {
                document.getElementById(`ql${i}`).value = qlOpt[i]
                i +=1
            }
        }
    }
}

async function setQl(){ // Fetch Quick Links from text input and save to localstorage
    await showLoading();// called as an onclick function
    var qlSet = []
    for (i in ql) {
        var opt = document.getElementById(`ql${i}`).value
        if (opt != ""){
            qlSet.push(opt)
        }
        qlSet.sort()
    }
    localStorage.setItem("qlOpt", JSON.stringify(qlSet))
    log(`settings.setQl: User settings saved`, "INFO")
    await hideLoading();
    await showDone();
    vibe("ok")
    await delay(800);
    hideDone();
}

async function clearQl(){ // Clear Quick Links from localstorage
    showLoading();
    localStorage.removeItem("qlOpt")
    log(`settings.setQl: User settings reset to default`, "INFO")
    getQl()
    await hideLoading();
    await showDone();
    vibe("ok");
    await delay(800);
    hideDone();
}

async function isRegistered() { // Check if a device is registered, returns BOOL
    if (localStorage.getItem("uuid")) {
        return true
        // Also need an API Call here to check if auth is working.
        // A Suitable function exists in auth.js - move it to lib.main.js
    }
    localStorage.removeItem("uuid");
    return false
}

async function register() { // Registers a device by sending POST request to API Server
    if (! await isRegistered()) {
        showLoading()
        let url = `${window.location.origin}/api/v1/register/request`;
        let email = document.getElementById("eml").textContent
        let res = await fetch(url, {
            method: "POST",
            headers: {
              "Content-Type": "application/json"
            },
            redirect: "follow",
            body: JSON.stringify({email: email})
        })
        if (res.status == 201) {
            showDone();
            hideLoading();
            return;
        }
        log(`settings.register: Error: Fetch returned: ${res.status}`, "err")
    } else {
        logout()
    } 
}

async function logout() { // Simply removed the UUID from localstorage
    localStorage.removeItem("uuid");
    location.reload();
    return
}

async function showDone() { // Diaplays the 'Done' dialogue.
    document.getElementById("done").style = "opacity: 1";
}

async function hideDone() { // Hides the 'Done' dialogue.
    document.getElementById("done").style = "opacity: 0";
}