function openPermissionList() {
    if (auth_user == 1) {
        document.getElementById("permission_list").style.display = 'block';
        document.getElementById("open_permission_list").click();
        var xmlhttp = new XMLHttpRequest();
        xmlhttp.onreadystatechange = function () {
            if (this.readyState == 4 && this.status == 200) {
                document.querySelector("#permission_list_content").innerHTML = this.responseText;

                $(document).ready( function () {
                    new DataTable('#permission_list_table', {
                        paging: false,
                        scrollCollapse: true,
                        scrollY: '70vh',
                        order: [[0, 'desc']],
                        dom: 'Bftip',
                        buttons: [
                            'print', 'excel', 'pdf'
                        ]
                    });
                } );
            }
        };
        xmlhttp.open("GET", "php/permission/permission_list_content.php");
        xmlhttp.send();
    } else {
        openLoginSection();
    }
}

function openNewPermission() {
    if (auth_user == 1) {
        document.getElementById("new_permission").style.display = 'block';
        document.getElementById("open_new_permission").click();
        var xmlhttp = new XMLHttpRequest();
        xmlhttp.onreadystatechange = function () {
            if (this.readyState == 4 && this.status == 200) {
                document.querySelector("#new_permission_content").innerHTML = this.responseText;
            }
        };
        xmlhttp.open("GET", "php/permission/new_permission.php");
        xmlhttp.send();
    } else {
        openLoginSection();
    }
}

function fullDayClick() {
    var full_day = document.getElementById("permission_full_day").checked;
    
    if(full_day == true) {
        document.getElementById("permission_start_time").style.display = 'none';
        document.getElementById("permission_end_time").style.display = 'none';
        document.getElementById("permission_start_time_title").style.display = 'none';
        document.getElementById("permission_end_time_title").style.display = 'none';
    } else {
        document.getElementById("permission_start_time").style.display = 'block';
        document.getElementById("permission_end_time").style.display = 'block';
        document.getElementById("permission_start_time_title").style.display = 'block';
        document.getElementById("permission_end_time_title").style.display = 'block';
    }
}

function sendPermission() {
    var permission_justification = document.querySelector('#permission_justification').value;
    var permission_start_date = document.querySelector('#permission_start_date').value;
    var permission_end_date = document.querySelector('#permission_end_date').value;
    var permission_start_time = document.querySelector('#permission_start_time').value;
    var permission_end_time = document.querySelector('#permission_end_time').value;
    var permission_note = document.querySelector('#permission_note').value;
    var permission_full_day = document.getElementById("permission_full_day").checked;

    var today = new Date();
    var today_dd = String(today.getDate()).padStart(2, '0');
    var today_mm = String(today.getMonth() + 1).padStart(2, '0'); //January is 0!
    var today_yyyy = today.getFullYear();
    today = today_yyyy + '-' + today_mm + '-' + today_dd;

    var nextDay = new Date();
    nextDay.setDate(nextDay.getDate()+1);
    var nextDay_dd = String(nextDay.getDate()).padStart(2, '0');
    var nextDay_mm = String(nextDay.getMonth() + 1).padStart(2, '0'); //January is 0!
    var nextDay_yyyy = nextDay.getFullYear();
    nextDay = nextDay_yyyy + '-' + nextDay_mm + '-' + nextDay_dd;

    var error = false;

    /* if(permission_start_date == today) {
        Swal.fire({
            type: 'error',
            text: 'La richiesta deve avere almeno un giorno di anticipo'
        });
        error = true;
    }
    
    if(permission_start_date == nextDay) {
        Swal.fire({
            type: 'error',
            text: 'La richiesta deve avere almeno un giorno di anticipo'
        });
        error = true;
    } */

    if(permission_justification == "") {
        Swal.fire({
            type: 'error',
            text: 'La richiesta deve avere un giustificativo'
        });
        error = true;
    }

    if(permission_end_date == "") {
        Swal.fire({
            type: 'error',
            text: 'La richiesta deve avere una data di fine'
        });
        error = true;
    }

    if(permission_full_day == false) {
        if(permission_start_time == "") {
            Swal.fire({
                type: 'error',
                text: 'La richiesta deve avere ora inizio'
            });
            error = true;
        }

        if(permission_end_time == "") {
            Swal.fire({
                type: 'error',
                text: 'La richiesta deve avere ora fine'
            });
            error = true;
        }
    }

    if(error == false) {
        $.ajax({
            type: "POST",
            url: "php/permission/send_new_permission.php",
            data: { permission_justification: permission_justification, permission_start_date: permission_start_date, permission_end_date: permission_end_date, permission_start_time: permission_start_time, permission_end_time : permission_end_time, permission_note : permission_note, permission_full_day : permission_full_day },
            success: function (res) {
                if (res === 'error') {
                    Swal.fire({
                        type: 'error',
                        text: 'Errore: ' + res
                    });
                } else {
                    Swal.fire({
                        type: 'success',
                        title: 'Permesso richiesto con successo!',
                        showConfirmButton: false,
                        timer: 2000
                    });

                    document.querySelector('#close_new_permission').click();
                    openPermissionList();
                }
            }
        });
    }
}

function permissionDetailUser(id) {
    if (auth_user == 1) {
        document.getElementById("permission_detail_user").style.display = 'block';
        document.getElementById("open_permission_detail_user").click();
        var xmlhttp = new XMLHttpRequest();
        xmlhttp.onreadystatechange = function () {
            if (this.readyState == 4 && this.status == 200) {
                document.querySelector("#permission_detail_content_user").innerHTML = this.responseText;
            }
        };
        xmlhttp.open("GET", "php/admin/permission_detail_content.php?id="+id);
        xmlhttp.send();
    } else {
        openLoginSection();
    }
}

function deletePermission(id) {
    Swal.fire({
        title: "Eliminare il permesso?",
        showDenyButton: false,
        showCancelButton: true,
        confirmButtonText: "Elimina",
        denyButtonText: `No`
      }).then((result) => {
        if (result.value == true) {
            $.ajax({
                type: "POST",
                url: "php/permission/delete_permission.php",
                data: { id : id },
                success: function (res) {
                    if (res === 'error') {
                        Swal.fire({
                            type: 'error',
                            text: 'Errore: ' + res
                        });
                    } else {
                        Swal.fire({
                            type: 'success',
                            title: 'Permesso eliminato con successo!',
                            showConfirmButton: false,
                            timer: 2000
                        });
        
                        openPermissionList();
                    }
                }
            });
        }
      });
}