function parseInvite(invite, empty = false) {
    if (empty === true) {
        return ["None", "", "1"]
    } else {
        var i = ["", "", "0", invite['email']];
        i[0] = invite['code'];
        if (invite['hours'] == 0) {
            i[1] = invite['minutes'] + 'm';
        } else if (invite['minutes'] == 0) {
            i[1] = invite['hours'] + 'h';
        } else {
            i[1] = invite['hours'] + 'h ' + invite['minutes'] + 'm';
        }
        i[1] = "Expires in " + i[1] + "  ";
        return i
    }
}
function addItem(invite) {
    var links = document.getElementById('invites');
    var listItem = document.createElement('li');
    listItem.id = invite[0]
    listItem.classList.add('list-group-item', 'd-flex', 'justify-content-between', 'd-inline-block');
    var listCode = document.createElement('div');
    listCode.classList.add('d-flex', 'align-items-center', 'text-monospace');
    var codeLink = document.createElement('a');
    codeLink.setAttribute('style', 'margin-right: 2%;');
    codeLink.appendChild(document.createTextNode(invite[0].replace(/-/g, '‑')));
    listCode.appendChild(codeLink);
    listItem.appendChild(listCode);
    var listRight = document.createElement('div');
    listText = document.createElement('span');
    listText.id = invite[0] + '_expiry'
    listText.appendChild(document.createTextNode(invite[1]));
    listRight.appendChild(listText);
    if (invite[2] == 0) {
        var inviteCode = window.location.href + 'invite/' + invite[0];
        codeLink.href = inviteCode;
        // listCode.appendChild(document.createTextNode(" "));
        var codeCopy = document.createElement('i');
        codeCopy.onclick = function(){toClipboard(inviteCode)};
        codeCopy.classList.add('fa', 'fa-clipboard');
        listCode.appendChild(codeCopy);
        if (typeof(invite[3]) != 'undefined') {
            var sentTo = document.createElement('span');
            sentTo.setAttribute('style', 'color: grey; margin-left: 2%; font-style: italic; font-size: 75%;');
            if (invite[3].includes('Failed to send to')) {
                sentTo.appendChild(document.createTextNode(invite[3]));
            } else {
                sentTo.appendChild(document.createTextNode('Sent to ' + invite[3]));
            }
            listCode.appendChild(sentTo);
        };
        var listDelete = document.createElement('button');
        listDelete.onclick = function(){deleteInvite(invite[0])};
        listDelete.classList.add('btn', 'btn-outline-danger');
        listDelete.appendChild(document.createTextNode('Delete'));
        listRight.appendChild(listDelete);
    };
    listItem.appendChild(listRight);
    links.appendChild(listItem);
};
function updateInvite(invite) {
    var expiry = document.getElementById(invite[0] + '_expiry');
    expiry.textContent = invite[1];
}
function removeInvite(code) {
    var item = document.getElementById(code);
    item.parentNode.removeChild(item);
}
function generateInvites(empty = false) {
    // document.getElementById('invites').textContent = '';
    if (empty === false) {
        $.ajax('/getInvites', {
            type : 'GET',
            dataType : 'json',
            contentType: 'json',
            xhrFields : {
                withCredentials: true
            },
            beforeSend : function (xhr) {
                xhr.setRequestHeader("Authorization", "Basic " + btoa(window.token + ":"));
            },
            data: { get_param: 'value' },
            complete: function(response) {
                var data = JSON.parse(response['responseText']);
                if (data['invites'].length == 0) {
                    document.getElementById('invites').textContent = '';
                    addItem(parseInvite([], true));
                } else {
                    data['invites'].forEach(function(invite) {
                        var match = false;
                        var items = document.getElementById('invites').children;
                        for (var i = 0; i < items.length; i++) {
                            if (items[i].id == invite['code']) {
                                match = true;
                                updateInvite(parseInvite(invite));
                            };
                        };
                        if (match == false) {
                            addItem(parseInvite(invite));
                        };
                    });
                    var items = document.getElementById('invites').children;
                    for (var i = 0; i < items.length; i++) {
                        var exists = false;
                        data['invites'].forEach(function(invite) {
                            if (items[i].id == invite['code']) {
                                exists = true;
                            }
                        });
                        if (exists == false) {
                            removeInvite(items[i].id);
                        }
                    };
                };
            }
        });
    } else if (empty === true) {
        document.getElementById('invites').textContent = '';
        addItem(parseInvite([], true));
    };
};
function deleteInvite(code) {
    var send = JSON.stringify({ "code": code });
    $.ajax('/deleteInvite', {
        data : send,
        contentType : 'application/json',
        type : 'POST',
        xhrFields : {
            withCredentials: true
        },
        beforeSend : function (xhr) {
            xhr.setRequestHeader("Authorization", "Basic " + btoa(window.token + ":"));
        },
        success: function() { generateInvites(); },
    });
};
function addOptions(le, sel) {
    for (v = 0; v <= le; v++) {
        var opt = document.createElement('option');
        opt.appendChild(document.createTextNode(v))
        opt.value = v
        sel.appendChild(opt)
    }
};
function toClipboard(str) {
    const el = document.createElement('textarea');
    el.value = str;
    el.setAttribute('readonly', '');
    el.style.position = 'absolute';
    el.style.left = '-9999px';
    document.body.appendChild(el);
    const selected =
        document.getSelection().rangeCount > 0
            ? document.getSelection().getRangeAt(0)
            : false;
    el.select();
    document.execCommand('copy');
    document.body.removeChild(el);
    if (selected) {
        document.getSelection().removeAllRanges();
        document.getSelection().addRange(selected);
    }
};

$("form#inviteForm").submit(function() {
    var button = document.getElementById('generateSubmit');
    button.disabled = true;
    button.innerHTML =
        '<span class="spinner-border spinner-border-sm" role="status" aria-hidden="true" style="margin-right: 0.5rem;"></span>' +
        'Loading...';
    var send_object = $("form#inviteForm").serializeObject();
    if (document.getElementById('send_to_address') != null) {
        if (document.getElementById('send_to_address_enabled').checked) {
            send_object['email'] = document.getElementById('send_to_address').value;
        }
    }
    var send = JSON.stringify(send_object);
    $.ajax('/generateInvite', {
        data : send,
        contentType : 'application/json',
        type : 'POST',
        xhrFields : {
            withCredentials: true
        },
        beforeSend : function (xhr) {
            xhr.setRequestHeader("Authorization", "Basic " + btoa(window.token + ":"));
        },
        success: function() {
            button.textContent = 'Generate';
            button.disabled = false;
            generateInvites(); 
        },

    });
    return false;
});
$("form#loginForm").submit(function() {
    window.token = "";
    var details = $("form#loginForm").serializeObject();
    var errorArea = document.getElementById('loginErrorArea');
    errorArea.textContent = '';
    var button = document.getElementById('loginSubmit');
    button.disabled = true;
    button.innerHTML =
        '<span class="spinner-border spinner-border-sm" role="status" aria-hidden="true" style="margin-right: 0.5rem;"></span>' +
        'Loading...';
    $.ajax('/getToken', {
        type : 'GET',
        dataType : 'json',
        contentType: 'json',
        xhrFields : {
            withCredentials: true
        },
        beforeSend : function (xhr) {
            xhr.setRequestHeader("Authorization", "Basic " + btoa(details['username'] + ":" + details['password']));
        },
        data: { get_param: 'value' },
        complete: function(data) {
            if (data['status'] == 401) {
                button.disabled = false;
                button.textContent = 'Login';
                var wrongPassword = document.createElement('div');
                wrongPassword.classList.add('alert', 'alert-danger');
                wrongPassword.setAttribute('role', 'alert');
                wrongPassword.appendChild(document.createTextNode('Incorrect username or password.'));
                errorArea.appendChild(wrongPassword);
            } else {
                window.token = JSON.parse(data['responseText'])['token'];
                generateInvites();
                var interval = setInterval(function() { generateInvites(); }, 60 * 1000);
                var hour = document.getElementById('hours');
                addOptions(24, hour);
                hour.selected = "0";
                var minutes = document.getElementById('minutes');
                addOptions(59, minutes);
                minutes.selected = "30";
                $('#login').modal('hide');
            }
        }
    });
    return false;
});
document.getElementById('openDefaultsWizard').onclick = function () {
    this.disabled = true;
    this.innerHTML =
        '<span class="spinner-border spinner-border-sm" role="status" aria-hidden="true" style="margin-right: 0.5rem;"></span>' +
        'Loading...';
    $.ajax('getUsers', {
        type : 'GET',
        dataType : 'json',
        contentType : 'json',
        xhrFields : {
            withCredentials: true
        },
        beforeSend : function (xhr) {
            xhr.setRequestHeader("Authorization", "Basic " + btoa(window.token + ":"));
        },
        complete : function(data) {
            if (data['status'] == 200) {
                var radioList = document.getElementById('defaultUserRadios');
                radioList.textContent = '';
                if (document.getElementById('setDefaultUser')) {
                    document.getElementById('setDefaultUser').remove();
                };
                var users = data['responseJSON']['users'];
                for (var i = 0; i < users.length; i++) {
                    var user = users[i]
                    var radio = document.createElement('div');
                    radio.classList.add('radio');
                    if (i == 0) {
                        var checked = 'checked';
                    } else {
                        var checked = '';
                    };
                    radio.innerHTML =
                        '<label><input type="radio" name="defaultRadios" id="default_' +
                        user['name'] + '" style="margin-right: 1rem;"' + checked + '>' +
                        user['name'] + '</label>';
                    radioList.appendChild(radio);
                }
                var button = document.getElementById('openDefaultsWizard');
                button.disabled = false;
                button.innerHTML = 'Set new account defaults';
                var submitButton = document.getElementById('storeDefaults');
                submitButton.disabled = false;
                submitButton.textContent = 'Submit';
                if (submitButton.classList.contains('btn-success')) {
                    submitButton.classList.remove('btn-success');
                    submitButton.classList.add('btn-primary');
                } else if (submitButton.classList.contains('btn-danger')) {
                    submitButton.classList.remove('btn-danger');
                    submitButton.classList.add('btn-primary');
                };
                $('#settingsMenu').modal('hide');
                $('#userDefaults').modal('show');
            }
        }
    });
};
document.getElementById('storeDefaults').onclick = function () {
    this.disabled = true;
    this.innerHTML =
        '<span class="spinner-border spinner-border-sm" role="status" aria-hidden="true" style="margin-right: 0.5rem;"></span>' +
        'Loading...';
    var button = document.getElementById('storeDefaults');
    var radios = document.getElementsByName('defaultRadios');
    for (var i = 0; i < radios.length; i++) {
        if (radios[i].checked) {
            var data = {'username':radios[i].id.slice(8), 'homescreen':false};
            if (document.getElementById('storeDefaultHomescreen').checked) {
                data['homescreen'] = true;
            }
            $.ajax('/setDefaults', {
                data : JSON.stringify(data),
                contentType : 'application/json',
                type : 'POST',
                xhrFields : {
                    withCredentials: true
                },
                beforeSend : function (xhr) {
                    xhr.setRequestHeader("Authorization", "Basic " + btoa(window.token + ":"));
                },
                success: function() {
                    button.textContent = 'Success';
                    if (button.classList.contains('btn-danger')) {
                        button.classList.remove('btn-danger');
                    } else if (button.classList.contains('btn-primary')) {
                        button.classList.remove('btn-primary');
                    };
                    button.classList.add('btn-success');
                    button.disabled = false;
                    setTimeout(function(){$('#userDefaults').modal('hide');}, 1000);
                },
                error: function() {
                    button.textContent = 'Failed';
        config_base_path = local_dir / "config-base.json"
                    button.classList.remove('btn-primary');
                    button.classList.add('btn-danger');
                    setTimeout(function(){
                        var button = document.getElementById('storeDefaults');
                        button.textContent = 'Submit';
                        button.classList.remove('btn-danger');
                        button.classList.add('btn-primary');
                        button.disabled = false;
                    }, 1000);
                }
            });
        }
    }
};
document.getElementById('openUsers').onclick = function () {
    this.disabled = true;
    this.innerHTML =
        '<span class="spinner-border spinner-border-sm" role="status" aria-hidden="true" style="margin-right: 0.5rem;"></span>' +
        'Loading...';
    $.ajax('/getUsers', {
        type : 'GET',
        dataType : 'json',
        contentType: 'json',
        xhrFields : {
            withCredentials: true
        },
        beforeSend : function (xhr) {
            xhr.setRequestHeader("Authorization", "Basic " + btoa(window.token + ":"));
        },
        data: { get_param: 'value' },
        complete : function(data) {
            if (data['status'] == 200) {
                var list = document.getElementById('userList');
                list.textContent = '';
                if (document.getElementById('saveUsers')) {
                    document.getElementById('saveUsers').remove();
                };
                var users = data['responseJSON']['users'];
                for (var i = 0; i < users.length; i++) {
                    var user = users[i]
                    var entry = document.createElement('p');
                    entry.id = 'user_' + user['name'];
                    entry.appendChild(document.createTextNode(user['name']));
                    var address = document.createElement('span');
                    address.setAttribute('style', 'margin-left: 2%; margin-right: 2%; color: grey;');
                    address.classList.add('addressText');
                    address.id = 'address_' + user['email'];
                    if (typeof(user['email']) != 'undefined') {
                        address.appendChild(document.createTextNode(user['email']));
                    };
                    var editButton = document.createElement('i');
                    editButton.classList.add('fa', 'fa-edit');
                    editButton.onclick = function() {
                        this.classList.remove('fa', 'fa-edit');
                        var input = document.createElement('input');
                        input.setAttribute('type', 'email');
                        input.setAttribute('style', 'margin-left: 2%; color: grey;');
                        var addressElement = this.parentNode.getElementsByClassName('addressText')[0];
                        if (addressElement.textContent != '') {
                            input.value = addressElement.textContent;
                        } else {
                            input.placeholder = 'Email Address';
                        };
                        this.parentNode.replaceChild(input, addressElement);
                        if (document.getElementById('saveUsers') == null) {
                            var footer = document.getElementById('userFooter')
                            var saveUsers = document.createElement('input');
                            saveUsers.classList.add('btn', 'btn-primary');
                            saveUsers.setAttribute('type', 'button');
                            saveUsers.value = 'Save Changes';
                            saveUsers.id = 'saveUsers';
                            saveUsers.onclick = function() {
                                var send = {}
                                var entries = document.getElementById('userList').children;
                                for (var i = 0; i < entries.length; i++) {
                                    var entry = entries[i];
                                    if (typeof(entry.getElementsByTagName('input')[0]) != 'undefined') {
                                        var name = entry.id.replace(/user_/g, '')
                                        var address = entry.getElementsByTagName('input')[0].value;
                                        send[name] = address
                                    };
                                };
                                send = JSON.stringify(send);
                                $.ajax('/modifyUsers', {
                                    data : send,
                                    contentType : 'application/json',
                                    type : 'POST',
                                    xhrFields : {
                                        withCredentials: true
                                    },
                                    beforeSend : function (xhr) {
                                        xhr.setRequestHeader("Authorization", "Basic " + btoa(window.token + ":"));
                                    },
                                    success: function() { $('#users').modal('hide'); },
                                });
                            };
                            footer.appendChild(saveUsers);
                        };
                    };
                    entry.appendChild(address);
                    entry.appendChild(editButton);
                    list.appendChild(entry);
                };
                var button = document.getElementById('openUsers');
                button.disabled = false;
                button.innerHTML = 'Users <i class="fa fa-user"></i>';
                $('#settingsMenu').modal('hide');
                $('#users').modal('show');
            };
        }
    });
};
generateInvites(empty = true);
$("#login").modal('show');

var config = {};
var modifiedConfig = {};

document.getElementById('openSettings').onclick = function () {
    restart_setting_changed = false;
    $.ajax('getConfig', {
        type : 'GET',
        dataType : 'json',
        contentType : 'json',
        xhrFields : {
            withCredentials: true
        },
        beforeSend : function (xhr) {
            xhr.setRequestHeader("Authorization", "Basic " + btoa(window.token + ":"));
        },
        complete : function(data) {
            if (data['status'] == 200) {
                var settingsList = document.getElementById('settingsList');
                settingsList.textContent = '';
                config = data['responseJSON'];
                for (var section of Object.keys(config)) {
                    var sectionCollapse = document.createElement('div');
                    sectionCollapse.classList.add('collapse');
                    sectionCollapse.id = section;
                    
                    var sectionTitle = config[section]['meta']['name'];
                    var sectionDescription = config[section]['meta']['description'];
                    var entryListID = section + '_entryList';
                    var sectionFooter = section + '_footer';

                    var innerCollapse = `
                    <div class="card card-body">
                        <small class="text-muted">${sectionDescription}</small>
                        <div class="${entryListID}">
                        </div>
                    </div>
                    `;

                    sectionCollapse.innerHTML = innerCollapse;
                    
                    for (var entry of Object.keys(config[section])) {
                        if (entry != 'meta') {
                            var entryName = config[section][entry]['name'];
                            var required = false;
                            if (config[section][entry]['required']) {
                                entryName += ' <sup class="text-danger">*</sup>';
                                required = true;
                            };
                            if (config[section][entry]['requires_restart']) {
                                entryName += ' <sup class="text-danger">R</sup>';
                            };
                            if (config[section][entry].hasOwnProperty('description')) {
                                var tooltip = `
                                <a class="text-muted" href="#" data-toggle="tooltip" data-placement="right" title="${config[section][entry]['description']}"><i class="fa fa-question-circle-o"></i></a>
                                `;
                                entryName += ' ';
                                entryName += tooltip;
                            };
                            var entryValue = config[section][entry]['value'];
                            var entryType = config[section][entry]['type'];
                            var entryGroup = document.createElement('div');
                            if (entryType == 'bool') {
                                entryGroup.classList.add('form-check');
                                if (entryValue.toString() == 'true') {
                                    var checked = true;
                                } else {
                                    var checked = false;
                                };
                                entryGroup.innerHTML = `
                                <input class="form-check-input" type="checkbox" value="" id="${section}_${entry}">
                                <label class="form-check-label" for="${section}_${entry}">${entryName}</label>
                                `;
                                entryGroup.getElementsByClassName('form-check-input')[0].required = required;
                                entryGroup.getElementsByClassName('form-check-input')[0].checked = checked;
                                entryGroup.getElementsByClassName('form-check-input')[0].onclick = function() {
                                    var state = this.checked;
                                    for (var sect of Object.keys(config)) {
                                        for (var ent of Object.keys(config[sect])) {
                                            if ((sect + '_' + config[sect][ent]['depends_true']) == this.id) {
                                                document.getElementById(sect + '_' + ent).disabled = !state;
                                            } else if ((sect + '_' + config[sect][ent]['depends_false']) == this.id) {
                                                document.getElementById(sect + '_' + ent).disabled = state;
                                            };
                                        };
                                    };
                                };
                            } else if ((entryType == 'text') || (entryType == 'email') || (entryType == 'password') || (entryType == 'number')) {
                                entryGroup.classList.add('form-group');
                                entryGroup.innerHTML = `
                                <label for="${section}_${entry}">${entryName}</label>
                                <input type="${entryType}" class="form-control" id="${section}_${entry}" aria-describedby="${entry}" value="${entryValue}">
                                `;
                                entryGroup.getElementsByClassName('form-control')[0].required = required;
                            } else if (entryType == 'select') {
                                entryGroup.classList.add('form-group');
                                var entryOptions = config[section][entry]['options'];
                                var innerGroup = `
                                <label for="${section}_${entry}">${entryName}</label>
                                <select class="form-control" id="${section}_${entry}">
                                `;
                                for (var i = 0; i < entryOptions.length; i++) {
                                    if (entryOptions[i] == entryValue) {
                                        var selected = 'selected';
                                    } else {
                                        var selected = '';
                                    }
                                    innerGroup += `
                                    <option value="${entryOptions[i]}" ${selected}>${entryOptions[i]}</option>
                                    `;
                                };
                                innerGroup += '</select>';
                                entryGroup.innerHTML = innerGroup;
                                entryGroup.getElementsByClassName('form-control')[0].required = required;
                                
                            };
                            sectionCollapse.getElementsByClassName(entryListID)[0].appendChild(entryGroup);
                        };
                    };
                    var sectionButton = document.createElement('button');
                    sectionButton.setAttribute('type', 'button');
                    sectionButton.classList.add('list-group-item', 'list-group-item-action');
                    sectionButton.appendChild(document.createTextNode(sectionTitle));
                    sectionButton.id = section + '_button';
                    sectionButton.setAttribute('data-toggle', 'collapse');
                    sectionButton.setAttribute('data-target', '#' + section);
                    settingsList.appendChild(sectionButton);
                    settingsList.appendChild(sectionCollapse);
                };
            };
        },
    });
    $('#settingsMenu').modal('show');
};

$('#settingsMenu').on('shown.bs.modal', function() {
    $("a[data-toggle='tooltip']").each(function (i, obj) {
        $(obj).tooltip();
    });
});

function sendConfig(modalId) {
    var modal = document.getElementById(modalId);
    var send = JSON.stringify(modifiedConfig);
    $.ajax('/modifyConfig', {
        data : send,
        contentType : 'application/json',
        type : 'POST',
        xhrFields : {
            withCredentials: true
        },
        beforeSend : function (xhr) {
            xhr.setRequestHeader("Authorization", "Basic " + btoa(window.token + ":"));
        },
        success: function() {
            $('#' + modalId).modal('hide');
            if (modalId != 'settingsMenu') {
                $('#settingsMenu').modal('hide');
            };
        },
        fail: function(xhr, textStatus, errorThrown) {
            var footer = modal.getElementsByClassName('modal-dialog')[0].getElementsByClassName('modal-content')[0].getElementsByClassName('modal-footer')[0]; 
            var alert = document.createElement('div');
            alert.classList.add('alert', 'alert-danger');
            alert.setAttribute('role', 'alert');
            alert.appendChild(document.createTextNode('Error: ' + errorThrown));
            footer.appendChild(alert);
        },
    });
};

document.getElementById('settingsSave').onclick = function() {
    modifiedConfig = {};
    var restart_setting_changed = false;
    var settings_changed = false;
    
    for (var section of Object.keys(config)) {
        for (var entry of Object.keys(config[section])) {
            if (entry != 'meta') {
                var entryID = section + '_' + entry;
                var el = document.getElementById(entryID);
                if (el.type == 'checkbox') {
                    var value = el.checked.toString();
                } else {
                    var value = el.value.toString();
                };
                if (value != config[section][entry]['value'].toString()) {
                    if (!modifiedConfig.hasOwnProperty(section)) {
                        modifiedConfig[section] = {};
                    };
                    modifiedConfig[section][entry] = value;
                    settings_changed = true;
                    if (config[section][entry]['requires_restart']) {
                        restart_setting_changed = true;
                    };
                };
            };
        };
    };
    // if (restart_setting_changed) {
    if (restart_setting_changed) {
        document.getElementById('applyRestarts').onclick = function(){sendConfig('restartModal');};
        $('#settingsMenu').modal('hide');
        $('#restartModal').modal({
            backdrop: 'static',
            show: true
        });
    } else if (settings_changed) {
        sendConfig('settingsMenu');
    } else {
        $('#settingsMenu').modal('hide');
    };
};