var booksUri = '/api/books/';
var authorsUri = '/api/authors/';

function ajaxHelper(uri, method, data) {//Envía y/o recibe los datos de acuerdo a la URL, el método y los datos proporcionados.
    $('#error').html(''); 
    return $.ajax({
        type: method,
        url: uri,
        dataType: 'json',
        contentType: 'application/json',
        data: data ? JSON.stringify(data) : null
    }).fail(function (jqXHR, textStatus, errorThrown) {
        $('#error').html(errorThrown);
    });
}

function getAuthors() {
    ajaxHelper(authorsUri, 'GET').done(function (data) {
        ImprimeAutores(data);
    });
}

function getAllBooks() {
    ajaxHelper(booksUri, 'GET').done(function (data) {
        ImprimeLista(data);
    });
}

function ImprimeAutores(jsondata) {
    var authors = $('#AuthorId');

    // Limpia la lista de autores
    $(authors).empty();
    $.each(jsondata, function (i, obj) {
        $(authors).append($('<option value="' + obj.Id + '">' + obj.Name + '</option>'));
    });
}

function ImprimeLista(jsondata) {
    var books = $('#books');
    var plantilla = $('#books li:first').clone();

    // Limpia la lista de libros
    $(books).empty();
    $.each(jsondata, function (i, obj) {
        var book = plantilla.clone();
        $(book).find('.AuthorName').text(obj.AuthorName);
        $(book).find('.Title').text(obj.Title);
        $(book).find('a').click(function () {
            ajaxHelper(booksUri + obj.Id, 'GET').done(function (data) {
                ImprimeDetalle(data);
            });
        });
        $(book).appendTo(books);
    });
}

function ImprimeDetalle(obj) {
    var tabladetalle = $('.table-details');

    $(tabladetalle).find('.AuthorName').text(obj.AuthorName);
    $(tabladetalle).find('.Title').text(obj.Title);
    $(tabladetalle).find('.Year').text(obj.Year);
    $(tabladetalle).find('.Genre').text(obj.Genre);
    $(tabladetalle).find('.Price').text(obj.Price);
}

function addBook() {
    var book = {
        AuthorId: $('#AuthorId').val(),
        Genre: $('#inputGenre').val(),
        Price: $('#inputPrice').val(),
        Title: $('#inputTitle').val(),
        Year: $('#inputYear').val()
    };

    ajaxHelper(booksUri, 'POST', book).done(function (item) {
        getAllBooks();
    });
    return false;
}

// Fetch the initial data.
getAllBooks();
getAuthors();