/*
 * Some silly variables for window dressing etc.
 */
var myWindowId;
const contentBox = document.querySelector("#content");
 /*
 * Database configurations. 
 */
let db;
const DBRequest = window.indexedDB.open("cdskivor", 1);
let IDBTransaction = window.IDBTransaction || window.webkitIDBTransaction || window.msIDBTransaction;
let objectStore;
const note = document.getElementById('notifications');

if(!indexedDB){
    alert("No IDB here man.");
};

DBRequest.onerror = function(event){
    alert("Fakking DB error man: ");
};

DBRequest.onsuccess = function(event){
    db = DBRequest.result;
    alert(db.name);
    let transaction = db.transaction(["rushAlbumList"], "readwrite");
    transaction.oncomplete = function(event){
        note.innerHTML += '<li>Transaction completed: database modification finished.</li>';
        alert("Transaction SUCCEEDED");
    };

    transaction.error = function(event){
        console.log("Here was errorsz");
    };
    
    /*
    var objectStore = db.createObjectStore('rushAlbumList', { keyPath: 'albumTitle' });
    objectStore.createIndex("year","year", { unique: false });
    var transactionStore = transaction.objectStore("rushAlbumList");
    var objectStoreRequest = objectStore.add(newItem[0]);

    objectStoreRequest.onsuccess = function(event){
        objectStore.add(albumTitle: "Rising", year: 1996);
        alert("Reqyest successful");
    };*/
};

DBRequest.onupgradeneeded = function(event){
    alert("Upgrade needed");
    let db = event.target.result;
    db.onerror = function(event) {
        note.innerHTML += '<li>Error loading database.</li>';
    }
};


/*
Make the content box editable as soon as the user mouses over the sidebar.
*/
window.addEventListener("mouseover", () => {
    contentBox.setAttribute("contenteditable", true);
});

/*
When the user mouses out, save the current contents of the box.
*/
window.addEventListener("mouseout", () => {
  contentBox.setAttribute("contenteditable", false);
  browser.tabs.query({windowId: myWindowId, active: true}).then((tabs) => {
    let contentToStore = {};
    contentToStore[tabs[0].url] = contentBox.textContent;
    browser.storage.local.set(contentToStore);
  });
});

/*
Press S - store text to file 
*/
window.addEventListener("keydown", function(event){
    if (event.code == "KeyS"){
        console.log("User details inserted into DB. ");
        addToDatabase();
    }
    if(event.code =="KeyD"){
        getFromDatabase();
        alert("Fetching data from DB... ");
    }
    else{
        alert("No letter key pressed man. ");
    }
});

function addToDatabase(){
    /*var trans = db.transaction('rushAlbumList');
    
    var obs = trans.objectStore('rushAlbumList');
    
    obs.onerror = function(e){
        alert("DB insertion error.");
    };
    obs.onsuccess = function(e){
        alert("DB insertion sucessful.");
    };
    trans.oncomplete = function(e){
        alert("Datta inserted.");
    };*/

    var records = [
      { albumTitle: 'Power windows', year: 1985 },
      { albumTitle: 'Grace under pressure', year: 1984 },
      { albumTitle: 'Signals', year: 1982 },
      { albumTitle: 'Moving pictures', year: 1981 },
      { albumTitle: 'Permanent waves', year: 1980 },
      { albumTitle: 'Hemispheres', year: 1978 },
      { albumTitle: 'A farewell to kings', year: 1977 },
      { albumTitle: '2112', year: 1976 },
      { albumTitle: 'Caress of steel', year: 1975 },
      { albumTitle: 'Fly by night', year: 1975 },
      { albumTitle: 'Rush', year: 1974 }
    ];

    DBRequest.onerror = function(event){
        alert("Fakking DB error man: ");
    };

    DBRequest.onsuccess = function(event){
        db = dbRequest.result;
        alert(db.name);
        let transaction = db.transaction(["rushAlbumList"], "readwrite");
        transaction.oncomplete = function(event){
            alert("Transaction SUCCEEDED");
        };

        transaction.onerror = function(event){
            console.log("Here was errorsz");
        };
        /*
        var objectStore = db.createObjectStore('rushAlbumList', { keyPath: 'albumTitle' });
        objectStore.createIndex("year","year", { unique: false });
        var transactionStore = transaction.objectStore("rushAlbumList");
        var objectStoreRequest = objectStore.add(newItem[0]);

        objectStoreRequest.onsuccess = function(event){
            objectStore.add(albumTitle: "Rising", year: 1996);
            alert("Reqyest successful");
        };*/
    };

    DBRequest.onupgradeneeded = function(event){
        alert("Upgrade needed");
        let db = event.target.result;
        db.onerror = function(event) {
            note.innerHTML += '<li>Error loading database.</li>';
        }
    };


    /*
    for(i = 0; i < records.length ; i++){
        os.put(records[i]);
        alert(records[i].albumTitle);
    };
    obs.oncomplete = function(e){
        alert("Datta inserted.",e);
    };
    obs.onsuccess = function(e){
        alert("DB insertion sucessful.",e);
    };
    obs.onerror = function(e){
        alert("DB insertion error.", e);
    };*/
}

function getFromDatabase(){
    db.transaction("users").objectStore("users").get("id").onsuccess = function(event){
        alert("Fetched from database is: " + event.target.result.name);
    }
}

function updateContent() {
  browser.tabs.query({windowId: myWindowId, active: true})
    .then((tabs) => {
      return browser.storage.local.get(tabs[0].url);
    })
    .then((storedInfo) => {
      contentBox.textContent = storedInfo[Object.keys(storedInfo)[0]];
    });
}


function insertZango(people){
    let docs = [
        { name: 'Frank', age: 20 },
        { name: 'Thomas', age: 33 },
        { name: 'Todd', age: 88 },
    ];

    people.insert(docs).then(() => {
        return people.find({
            name: { $ne: 'Todd' },
        }).forEach(doc => console.log('doc:', doc));
    }).catch(error => console.error(error));
}

/*
Update content when a new tab becomes active.
*/
browser.tabs.onActivated.addListener(updateContent);

/*
Update content when a new page is loaded into a tab.
*/
browser.tabs.onUpdated.addListener(updateContent);

/*
When the sidebar loads, get the ID of its window,
and update its content.
*/
browser.windows.getCurrent({populate: true}).then((windowInfo) => {
  myWindowId = windowInfo.id;
  updateContent();
});