function LoadUsersList(user_id) {
    var xmlhttp = new XMLHttpRequest();
    xmlhttp.onreadystatechange = function () {
        if (this.readyState == 4 && this.status == 200) {
            document.querySelector("#users_list_content").innerHTML = this.responseText;

            TransfersListUser(user_id);

            $(document).ready(function() {
                new DataTable('#users_transfer_table', {
                    paging: false,
                    scrollCollapse: true,
                    scrollY: '500px',
                    language: {
                        emptyTable: "Nessun dato presente nella tabella",
                        search: "Cerca:",
                        infoEmpty: "Visualizzati da 0 a 0 di 0 risultati",
                        info: "Visualizzati da _START_ a _END_ di _TOTAL_ risultati",
                        buttons: {
                            print: "Stampa",
                            colvis: "Visualizza",
                            colvisRestore: "Ripristina visualizzazione"
                        }
                    }
                });
            });
        }
    };
    xmlhttp.open("GET", "public/transfers/users_list.php");
    xmlhttp.send();
}

function TransfersListUser(user_id) {
    ShowPageLoader();
    for(i=0;i<50;i++) {
        if(document.getElementById(i) != null) {
            document.getElementById(i).style.backgroundColor = "transparent";
        }
    }

    document.getElementById(user_id).style.backgroundColor = "#e0f2f1";
    document.getElementById("transfers_list_loader").style.display = "block";

    var xmlhttp = new XMLHttpRequest();
    xmlhttp.onreadystatechange = function () {
        if (this.readyState == 4 && this.status == 200) {
            document.querySelector("#transfers_list_content").innerHTML = this.responseText;
            HidePageLoader();

            $(document).ready( function () {
                new DataTable('#transfers_list_table', {
                    paging: false,
                    scrollCollapse: true,
                    scrollY: '500px',
                    layout: {
                        topStart: {
                            buttons: [
                                {
                                    extend: 'print',
                                    split: ['print','excel','pdf', 'csv']
                                },
                                {
                                    text: 'Calendario',
                                    action: function (e, dt, node, config) {
                                        UserCalendar(user_id);
                                    }
                                },
                                {
                                    text: 'Nuova trasferta',
                                    action: function (e, dt, node, config) {
                                        NewTransfer(user_id);
                                    }
                                }
                            ]
                        }
                    },
                    language: {
                        emptyTable: "Nessun dato presente nella tabella",
                        search: "Cerca:",
                        infoEmpty: "Visualizzati da 0 a 0 di 0 risultati",
                        info: "Visualizzati da _START_ a _END_ di _TOTAL_ risultati",
                        buttons: {
                            print: "Stampa",
                            colvis: "Visualizza",
                            colvisRestore: "Ripristina visualizzazione"
                        }
                    },
                    order: {
                        idx: 0,
                        dir: 'desc'
                    }
                });        
            } );

            document.getElementById("transfers_list_loader").style.display = "none";
        }
    };
    xmlhttp.open("GET", "public/transfers/transfers_list.php?user_id="+user_id);
    xmlhttp.send();
}

function loadTotalTransfersToApprove() {
    var xmlhttp = new XMLHttpRequest();
    xmlhttp.onreadystatechange = function () {
        if (this.readyState == 4 && this.status == 200) {
            document.querySelector("#transfers_to_approve_count").innerHTML = this.responseText;
        }
    };
    xmlhttp.open("GET", "public/transfers/transfers_to_approve_count.php");
    xmlhttp.send();
}

function transfersToApprove() {
    document.getElementById("open_transfers_to_approve").click();
    loadTransfersToApprove();
}

function loadTransfersToApprove() {
    ShowPageLoader();

    setTimeout(() => {
        var xmlhttp = new XMLHttpRequest();
        xmlhttp.onreadystatechange = function () {
            if (this.readyState == 4 && this.status == 200) {
                document.querySelector("#transfers_to_approve_content").innerHTML = this.responseText;
                HidePageLoader();

                $(document).ready( function () {
                    new DataTable('#transfers_to_approve_table', {
                        paging: false,
                        scrollCollapse: true,
                        scrollY: '400px',
                        layout: {
                            topStart: {
                                buttons: [
                                    {
                                        extend: 'colvis',
                                        postfixButtons: ['colvisRestore'],
                                        popoverTitle: 'Visibilità colonne'
                                    },
                                    {
                                        extend: 'print',
                                        split: ['print','excel','pdf', 'csv']
                                    }
                                ]
                            }
                        },
                        language: {
                            emptyTable: "Nessun dato presente nella tabella",
                            search: "Cerca:",
                            infoEmpty: "Visualizzati da 0 a 0 di 0 risultati",
                            info: "Visualizzati da _START_ a _END_ di _TOTAL_ risultati",
                            buttons: {
                                print: "Stampa",
                                colvis: "Visualizza",
                                colvisRestore: "Ripristina visualizzazione"
                            }
                        },
                        order: {
                            idx: 1,
                            dir: 'desc'
                        }
                    });        
                } );
            }
        };
        xmlhttp.open("GET", "public/transfers/transfers_to_approve_list.php");
        xmlhttp.send();
        }, 1000);
}

function NewTransfer(user_id) {
    document.getElementById("open_new_transfer").click();

    var xmlhttp = new XMLHttpRequest();
    xmlhttp.onreadystatechange = function () {
        if (this.readyState == 4 && this.status == 200) {
            document.querySelector("#new_transfer_content").innerHTML = this.responseText;
        }
    };
    xmlhttp.open("GET", "public/transfers/new_transfer_content.php?user_id="+user_id);
    xmlhttp.send();
}

function CreateNewTransfer(user_id) {
    ShowPageLoader();
    var transfer_start_date = document.getElementById("new_transfer_start_date").value;
    var transfer_end_date = document.getElementById("new_transfer_end_date").value;
    var transfer_location = document.getElementById("new_transfer_location").value;
    var transfer_destination = document.getElementById("new_transfer_destination").value;

    if(transfer_location == "") {
        ErrorAlert("Italia o estero è obbligatorio");
        exit;
    }

    $.ajax({
        type: "POST",
        url: "php/transfers/new_transfer.php",
        data: { user_id: user_id, transfer_start_date: transfer_start_date, transfer_end_date: transfer_end_date, transfer_location: transfer_location, transfer_destination: transfer_destination },
        success: function (res) {
            if (res === 'error') {
                ErrorAlert("Errore: "+res)
            } else {
                SuccessAlert('Trasferta inserita');
                document.getElementById("close_new_transfer").click();
                TransfersListUser(user_id);
                loadUserCalendar(user_id);
            }
            HidePageLoader();
        }
    });
}

function approveTransfer(user_id, transfer_id) {
    Swal.fire({
        title: "Confermi approvazione?",
        text: "",
        icon: "question",
        showCancelButton: true,
        confirmButtonColor: "#d33",
        cancelButtonColor: "gray",
        confirmButtonText: "Procedi",
        cancelButtonText: "Annulla"
    }).then((result) => {
        if (result.isConfirmed) {
            ShowPageLoader();

            $.ajax({
                type: "POST",
                url: "php/transfers/manage_transfer.php",
                data: { id: transfer_id, result: 'approvato' },
                success: function (res) {
                    if (res === 'error') {
                        ErrorAlert("Errore: "+res);
                    } else {
                        SuccessAlert('Trasferta approvata');
                        LoadUsersList(user_id);
                        loadTotalTransfersToApprove();
                        loadUserCalendar(user_id);
                        loadTransfersToApprove();
                        document.getElementById("close_transfer_details").click();
                    }
                    HidePageLoader();
                }
            });
        }
    });
}

function rejectTransfer(user_id, transfer_id) {
    Swal.fire({
        title: "Confermi rifiuto?",
        text: "",
        icon: "question",
        showCancelButton: true,
        confirmButtonColor: "#d33",
        cancelButtonColor: "gray",
        confirmButtonText: "Procedi",
        cancelButtonText: "Annulla"
    }).then((result) => {
        if (result.isConfirmed) {
            ShowPageLoader();

            $.ajax({
                type: "POST",
                url: "php/transfers/manage_transfer.php",
                data: { id: transfer_id, result: 'rifiutato' },
                success: function (res) {
                    if (res === 'error') {
                        ErrorAlert("Errore: "+res);
                    } else {
                        SuccessAlert('Trasferta rifiutata');
                        LoadUsersList(user_id);
                        loadTotalTransfersToApprove();
                        loadUserCalendar(user_id);
                        loadTransfersToApprove();
                        document.getElementById("close_transfer_details").click();
                    }
                    HidePageLoader();
                }
            });
        }
    });
}

function deleteTransfer(user_id, transfer_id) {
    Swal.fire({
        title: "Confermi eliminazione?",
        text: "La trasferta verrà eliminata dal sistema",
        icon: "warning",
        showCancelButton: true,
        confirmButtonColor: "#d33",
        cancelButtonColor: "#3085d6",
        confirmButtonText: "Sì, elimina!",
        cancelButtonText: "Annulla"
    }).then((result) => {
        if (result.isConfirmed) {
            ShowPageLoader();
            $.ajax({
                type: "POST",
                url: "php/transfers/delete_transfer.php",
                data: { transfer_id: transfer_id },
                success: function (res) {
                    if (res === 'error') {
                        ErrorAlert("Errore: "+res)
                    } else {
                        SuccessAlert('Trasferta eliminata');
                        TransfersListUser(user_id);
                        loadUserCalendar(user_id);
                        document.getElementById("close_transfer_details").click();
                    }
                    HidePageLoader();
                }
            });
        }
    });
}

function editTransfer(user_id, transfer_id) {
    document.getElementById("open_transfer_details").click();

    var xmlhttp = new XMLHttpRequest();
    xmlhttp.onreadystatechange = function () {
        if (this.readyState == 4 && this.status == 200) {
            document.querySelector("#transfer_details_content").innerHTML = this.responseText;
        }
    };
    xmlhttp.open("GET", "public/transfers/transfer_details_content.php?transfer_id="+transfer_id+"&user_id="+user_id);
    xmlhttp.send();
}

function updateTransfer(user_id, transfer_id) {
    ShowPageLoader();
    var transfer_start_date = document.getElementById("transfer_start_date").value;
    var transfer_end_date = document.getElementById("transfer_end_date").value;
    var transfer_location = document.getElementById("transfer_location").value;
    var transfer_destination = document.getElementById("transfer_destination").value;

    $.ajax({
        type: "POST",
        url: "php/transfers/update_transfer.php",
        data: { transfer_id: transfer_id, transfer_start_date: transfer_start_date, transfer_end_date: transfer_end_date, transfer_location: transfer_location, transfer_destination: transfer_destination },
        success: function (res) {
            if (res === 'error') {
                ErrorAlert("Errore: "+res);
            } else {
                SuccessAlert('Trasferta modificata');
                TransfersListUser(user_id);
                loadUserCalendar(user_id);
                document.getElementById("close_transfer_details").click();
            }
            HidePageLoader();
        }
    });
}

function UserCalendar(user_id) {
    document.getElementById("open_user_calendar").click();

    ShowPageLoader();
    setTimeout(() => {
        loadUserCalendar(user_id);
        HidePageLoader();
    }, 1000);
}

function loadUserCalendar(user_id) {
    var xmlhttp = new XMLHttpRequest();
    xmlhttp.onreadystatechange = function () {
        if (this.readyState == 4 && this.status == 200) {
            document.querySelector("#user_calendar_content").innerHTML = this.responseText;

            var calendarEl = document.getElementById('calendar');
            var calendar = new FullCalendar.Calendar(calendarEl, {
                initialView: 'dayGridMonth',
                locale: 'it',
                editable: false,
                height: 700,
                displayEventTime: true,
                firstDay: 1,
                customButtons: {
                    myCustomButton: {
                        text: 'Nuova trasferta',
                        click: function() {
                            NewTransfer(user_id);
                        }
                    }
                },
                headerToolbar: {
                    left: 'prev,next today myCustomButton',
                    center: 'title',
                    right: 'dayGridMonth,timeGridWeek,timeGridDay,listMonth'
                },
                buttonText: {
                    prev: 'Prec',
                    next: 'Succ',
                    today: 'Oggi',
                    year: 'Anno',
                    month: 'Mese',
                    week: 'Settimana',
                    day: 'Giorno',
                    list: 'Agenda',
                },
                allDayText: 'Tutto il giorno',
                moreLinkText(n) {
                    return '+altri ' + n;
                },
                events: "php/transfers/get_calendar_transfers.php?user_id="+user_id,
                eventDisplay: 'block',
                /* eventColor: '#378006', */
                displayEventTime: true,
                eventTimeFormat: {
                    hour: '2-digit',
                    minute: '2-digit',
                    hour12: false
                },
                selectable: true,
                select: function (info) {

                    document.getElementById("open_new_transfer").click();

                    var xmlhttp = new XMLHttpRequest();
                    xmlhttp.onreadystatechange = function () {
                        if (this.readyState == 4 && this.status == 200) {
                            document.querySelector("#new_transfer_content").innerHTML = this.responseText;
                        }
                    };
                    xmlhttp.open("GET", "public/transfers/new_transfer_content.php?user_id="+user_id+"&startDate="+info.startStr+"&endDate="+info.endStr);
                    xmlhttp.send();
                },
                eventClick: function (info) {
                    if(info.event.id < 9000000) {
                        document.getElementById("open_transfer_details").click();

                        var xmlhttp = new XMLHttpRequest();
                        xmlhttp.onreadystatechange = function () {
                            if (this.readyState == 4 && this.status == 200) {
                                document.querySelector("#transfer_details_content").innerHTML = this.responseText;
                            }
                        };
                        xmlhttp.open("GET", "public/transfers/transfer_details_content.php?transfer_id="+info.event.id+"&user_id="+user_id);
                        xmlhttp.send();
                    }
                }
            });
            calendar.render();
        }
    };
    xmlhttp.open("GET", "public/transfers/transfers_calendar_content.php?user_id="+user_id);
    xmlhttp.send();
}