//-----------------------------------------------------------
// General Helpers
//-----------------------------------------------------------
function loading () { 
    return `<center>
                <div class="preloader-wrapper big active">
                    <div class="spinner-layer spinner-blue-only">
                        <div class="circle-clipper left">
                            <div class="circle">
                            </div>
                        </div>
                        <div class="gap-patch">
                            <div class="circle">
                            </div>
                        </div>
                        <div class="circle-clipper right">
                            <div class="circle"></div>
                        </div>
                    </div>
                </div>
            </center> `
}

function get_color(id) {
    // Define the colors... Seems like a good number to start with
    var colors = [
        "red         lighten-1",
        "teal        lighten-1",
        "blue        lighten-1",
        "blue-grey   lighten-1",
        "indigo      lighten-2",
        "green       lighten-1",
        "deep-orange lighten-1",
        "yellow      lighten-2",
        "purple      lighten-2",
        "indigo      lighten-2",
        "brown       lighten-1",
        "grey        lighten-1"
    ];
    index = id % colors.length
    return colors[index]
}

function get_base_path() {

}

// Generic modal used for alerts / problems
function load_modal_generic(type, title, message) {
    console.log("Loading the generic modal")
    element         = document.getElementById('generic_modal')
    content_element = document.getElementById('generic_modal_content')
    title_element   = document.getElementById('generic_modal_title')


    content_element.innerHTML = loading()
    title_element.innerHTML = "Loading..."
    html = ""

    switch (type) {
        case "warning" || "Warning":
            title_html = "Warning"
            content_html =`
            <ul class="collection">
                <li class="collection-item avatar">
                    <i class="material-icons circle yellow">priority_high</i>
                    <span class="title">${title}</span>
                    <p>${message}</p>
                </li>
            </ul>`
            break;
        case "success" || "Success":
            title_html = "Success"
            content_html =`
            <ul class="collection">
                <li class="collection-item avatar">
                    <i class="material-icons circle green">check</i>
                    <span class="title">${title}</span>
                    <p>${message}</p>
                </li>
            </ul>`
            break;
        case "error" || "Error": 
            title_html = "Error"
            content_html =`
            <ul class="collection">
                <li class="collection-item avatar">
                    <i class="material-icons circle red">warning</i>
                    <span class="title">${title}</span>
                    <p>${message}</p>
                </li>
            </ul>`
            break;
        case "information" || "Information":
            title_html = "Information"
            content_html =`
            <ul class="collection">
                <li class="collection-item avatar">
                    <i class="material-icons circle grey">help</i>
                    <span class="title">${title}</span>
                    <p>${message}</p>
                </li>
            </ul>`
            break;
    }
    title_element.innerHTML = title_html
    content_element.innerHTML = content_html

    var instance = M.Modal.getInstance(element);
    instance.open()
}

// Enables the Floating Action Button (FAB) for the Machines and Users page
document.addEventListener('DOMContentLoaded', function() {
    var elems = document.querySelectorAll('.fixed-action-btn');
    var instances = M.FloatingActionButton.init(elems, {hoverEnabled:false}); 
});

// Init the date picker when adding PreAuth keys
document.addEventListener('DOMContentLoaded', function() {
    var elems = document.querySelectorAll('.datepicker');
    var instances = M.Datepicker.init(elems);
});

//-----------------------------------------------------------
// Settings Page Actions
//-----------------------------------------------------------
function test_key() {
    document.getElementById('test_modal_results').innerHTML = loading()
    var data = $.ajax({
        type:"GET", 
        url: "api/test_key",
        success: function(response) {
            if(response == "Unauthenticated") {
                html = `
                <ul class="collection">
                    <li class="collection-item avatar">
                        <i class="material-icons circle red">warning</i>
                        <span class="title">Error</span>
                        <p>Key authentication failed.  Check your key.</p>
                    </li>
                </ul>
                `
                document.getElementById('test_modal_results').innerHTML = html
            } else {
                json = JSON.parse(response)
                var html = `
                    <ul class="collection">
                        <li class="collection-item avatar">
                            <i class="material-icons circle green">check</i>
                            <span class="title">Success</span>
                            <p>Key authenticated with the Headscale server.</p>
                        </li>
                    </ul>
                    <h6>Key Information</h6>
                    <table class="highlight">
                        <tbody>
                            <tr>
                                <td><b>Key ID</b></td>
                                <td>${json['id']}</td>
                            </tr>
                            <tr>
                                <td><b>Prefix</b></td>
                                <td>${json['prefix']}</td>
                            </tr>
                            <tr>
                                <td><b>Expiration Date</b></td>
                                <td>${json['expiration']}</td>
                            </tr>
                            <tr>
                                <td><b>Creation Date</b></td>
                                <td>${json['createdAt']}</td>
                            </tr>
                        </tbody>
                    </table>
                    `
                document.getElementById('test_modal_results').innerHTML = html
            }
        }
    })

}

function save_key() {
    var api_key = document.getElementById('api_key').value;
    if (!api_key) {
        html = `
        <ul class="collection">
            <li class="collection-item avatar">
                <i class="material-icons circle red">warning</i>
                <span class="title">Error</span>
                <p>You must enter an API key before saving.</p>
            </li>
        </ul>
        `
        document.getElementById('test_modal_results').innerHTML = html
        return
    };
    var data = {"api_key": api_key};
    $.ajax({
        type:"POST", 
        url: "api/save_key",
        data: JSON.stringify(data),
        contentType: "application/json",
        success: function(response) {
            M.toast({html: 'Key saved.  Testing...'});
            test_key();
        }
    })
}

//-----------------------------------------------------------
// Modal Loaders
//-----------------------------------------------------------
function load_modal_rename_user(user_id, old_name) {
    document.getElementById('modal_content').innerHTML = loading()
    document.getElementById('modal_title').innerHTML = "Loading..."
    document.getElementById('modal_confirm').className = "green btn-flat white-text"
    document.getElementById('modal_confirm').innerText = "Rename"

    modal         = document.getElementById('card_modal');
    modal_title   = document.getElementById('modal_title');
    modal_body    = document.getElementById('modal_content');
    modal_confirm = document.getElementById('modal_confirm');

    modal_title.innerHTML = "Rename user '"+old_name+"'?"
    body_html = `
    <ul class="collection">
        <li class="collection-item avatar">
            <i class="material-icons circle">language</i>
            <span class="title">Information</span>
            <p>You are about to rename the user '${old_name}'</p>
        </li>
    </ul>
    <h6>New Name</h6>
    <div class="input-field">
        <i class="material-icons prefix">language</i>
        <input value='${old_name}' id="new_user_name_form" type="text" data-length="32">
    </div>
    `

    modal_body.innerHTML = body_html
    $(document).ready(function() { $('input#new_user_name_form').characterCounter(); });    

    modal_confirm.setAttribute('onclick', 'rename_user('+user_id+', "'+old_name+'")')
}

function load_modal_delete_user(user_id, user_name) {
    document.getElementById('modal_content').innerHTML = loading()
    document.getElementById('modal_title').innerHTML = "Loading..."
    document.getElementById('modal_confirm').className = "red btn-flat white-text"
    document.getElementById('modal_confirm').innerText = "Delete"

    modal         = document.getElementById('card_modal');
    modal_title   = document.getElementById('modal_title');
    modal_body    = document.getElementById('modal_content');
    modal_confirm = document.getElementById('modal_confirm');

    modal_title.innerHTML = "Delete user '"+user_name+"'?"
    body_html = `
    <ul class="collection">
        <li class="collection-item avatar">
            <i class="material-icons circle red">warning</i>
            <span class="title">Warning</span>
            <p>Are you sure you want to delete the user '${user_name}'?</p>
        </li>
    </ul>
    `
    modal_body.innerHTML = body_html
    modal_confirm.setAttribute('onclick', 'delete_user("'+user_id+'", "'+user_name+'")')
}

function load_modal_add_preauth_key(user_name) {
    document.getElementById('modal_content').innerHTML = loading()
    document.getElementById('modal_title').innerHTML = "Loading..."
    document.getElementById('modal_confirm').className = "green btn-flat white-text"
    document.getElementById('modal_confirm').innerText = "Add"

    modal         = document.getElementById('card_modal');
    modal_title   = document.getElementById('modal_title');
    modal_body    = document.getElementById('modal_content');
    modal_confirm = document.getElementById('modal_confirm');

    modal_title.innerHTML = "Adding a PreAuth key to '"+user_name+"'"
    body_html = `
        <ul class="collection">
            <li class="collection-item avatar">
                <i class="material-icons circle">help</i>
                <span class="title">Information</span>
                <p>
                    <ul>
                        <li>Pre-Auth keys can be used to authenticate to Headscale without manually registering a machine.  Use the flag <code>--auth-key</code> to do so.</li>
                        <li>"Ephemeral" keys can be used to register devices that frequently come on and drop off the newtork (for example, docker containers)</li>
                        <li>Keys that are "Reusable" can be used multiple times.  Keys that are "One Time Use" will expire after their first use.</li> 
                    </ul>
                </p>
            </li>
        </ul>
        <h4>PreAuth Key Information</h4>
        <br>
        <input type="text" class="datepicker user-preauthkey-datepicker" id="preauth_key_expiration_date">
        <p>
            <label>
                <input type="checkbox" class="filled-in" id="checkbox-reusable"/>
                <span>Reusable</span>
            </label>
        </p>
        <p>
            <label>
                <input type="checkbox" class="filled-in" id="checkbox-ephemeral" />
                <span>Ephemeral</span>
            </label>
        </p>

    `

    modal_body.innerHTML = body_html

    // Init the date picker
    M.Datepicker.init(document.querySelector('.datepicker'), {format:'yyyy-mm-dd'});

    modal_confirm.setAttribute('onclick', 'add_preauth_key("'+user_name+'")')
}

function load_modal_expire_preauth_key(user_name, key) {
    document.getElementById('modal_content').innerHTML = loading()
    document.getElementById('modal_title').innerHTML = "Loading..."
    document.getElementById('modal_confirm').className = "red lighten-2 btn-flat white-text"
    document.getElementById('modal_confirm').innerText = "Expire"

    modal         = document.getElementById('card_modal');
    modal_title   = document.getElementById('modal_title');
    modal_body    = document.getElementById('modal_content');
    modal_confirm = document.getElementById('modal_confirm');

    modal_title.innerHTML = "Expire PreAuth Key?"
    body_html = `
    <ul class="collection">
        <li class="collection-item avatar">
            <i class="material-icons circle red">warning</i>
            <span class="title">Warning</span>
            <p>Are you sure you want to expire this key?  It will become unusable afterwards, and any machine currently using it will disconnect.</p>
        </li>
    </ul>
    `
    modal_body.innerHTML = body_html
    modal_confirm.setAttribute('onclick', 'expire_preauth_key("'+user_name+'", "'+key+'")')
}

function load_modal_move_machine(machine_id) {
    document.getElementById('modal_content').innerHTML = loading()
    document.getElementById('modal_title').innerHTML = "Loading..."
    document.getElementById('modal_confirm').className = "green btn-flat white-text"
    document.getElementById('modal_confirm').innerText = "Move"

    var data = {"id": machine_id}
    $.ajax({
        type: "POST", 
        url: "api/machine_information",
        data: JSON.stringify(data),
        contentType: "application/json",
        success: function(headscale) {
            $.ajax({
                type: "POST", 
                url: "api/get_users",
                success: function(response) {
                    modal         = document.getElementById('card_modal');
                    modal_title   = document.getElementById('modal_title');
                    modal_body    = document.getElementById('modal_content');
                    modal_confirm = document.getElementById('modal_confirm');
        
                    modal_title.innerHTML = "Move machine '"+headscale.machine.givenName+"'?"

                    select_html = `<h6>Select a User</h6><select id='move-select'>`
                    for (let i=0; i < response.users.length; i++) {
                        var name = response["users"][i]["name"]
                        select_html = select_html+`<option value="${name}">${name}</option>`
                    }
                    select_html = select_html+`</select>`

                    body_html = `
                    <ul class="collection">
                        <li class="collection-item avatar">
                            <i class="material-icons circle">language</i>
                            <span class="title">Information</span>
                            <p>You are about to move ${headscale.machine.givenName} to a new user.</p>
                        </li>
                    </ul>`
                    body_html = body_html+select_html
                    body_html = body_html+`<h6>Machine Information</h6>
                    <table class="highlight">
                        <tbody>
                            <tr>
                                <td><b>Machine ID</b></td>
                                <td>${headscale.machine.id}</td>
                            </tr>
                            <tr>
                                <td><b>Hostname</b></td>
                                <td>${headscale.machine.name}</td>
                            </tr>
                            <tr>
                                <td><b>User</b></td>
                                <td>${headscale.machine.user.name}</td>
                            </tr>
                        </tbody>
                    </table>
                    `

                    modal_body.innerHTML = body_html
                    M.FormSelect.init(document.querySelectorAll('select'))
                }
            })
            modal_confirm.setAttribute('onclick', 'move_machine('+machine_id+')')
        }
    })
}

function load_modal_delete_machine(machine_id) {
    document.getElementById('modal_content').innerHTML = loading()
    document.getElementById('modal_title').innerHTML = "Loading..."
    document.getElementById('modal_confirm').className = "red btn-flat white-text"
    document.getElementById('modal_confirm').innerText = "Delete"

    var data = {"id": machine_id}
    $.ajax({
        type: "POST", 
        url: "api/machine_information",
        data: JSON.stringify(data),
        contentType: "application/json",
        success: function(response) {
            modal         = document.getElementById('card_modal');
            modal_title   = document.getElementById('modal_title');
            modal_body    = document.getElementById('modal_content');
            modal_confirm = document.getElementById('modal_confirm');

            modal_title.innerHTML = "Delete machine '"+response.machine.givenName+"'?"
            body_html = `
            <ul class="collection">
                <li class="collection-item avatar">
                    <i class="material-icons circle red">warning</i>
                    <span class="title">Warning</span>
                    <p>Are you sure you want to delete ${response.machine.givenName}?</p>
                </li>
            </ul>
            <h6>Machine Information</h6>
            <table class="highlight">
                <tbody>
                    <tr>
                        <td><b>Machine ID</b></td>
                        <td>${response.machine.id}</td>
                    </tr>
                    <tr>
                        <td><b>Hostname</b></td>
                        <td>${response.machine.name}</td>
                    </tr>
                    <tr>
                        <td><b>User</b></td>
                        <td>${response.machine.user.name}</td>
                    </tr>
                </tbody>
            </table>
            `
            modal_body.innerHTML = body_html
            modal_confirm.setAttribute('onclick', 'delete_machine('+machine_id+')')
        }
    })
}

function load_modal_rename_machine(machine_id) {
    document.getElementById('modal_content').innerHTML = loading()
    document.getElementById('modal_title').innerHTML = "Loading..."
    document.getElementById('modal_confirm').className = "green btn-flat white-text"
    document.getElementById('modal_confirm').innerText = "Rename"
    var data = {"id": machine_id}
    $.ajax({
        type: "POST", 
        url: "api/machine_information",
        data: JSON.stringify(data),
        contentType: "application/json",
        success: function(response) {
            modal         = document.getElementById('card_modal');
            modal_title   = document.getElementById('modal_title');
            modal_body    = document.getElementById('modal_content');
            modal_confirm = document.getElementById('modal_confirm');

            modal_title.innerHTML = "Rename machine '"+response.machine.givenName+"'?"
            body_html = `
            <ul class="collection">
                <li class="collection-item avatar">
                    <i class="material-icons circle">devices</i>
                    <span class="title">Information</span>
                    <p>You are about to rename ${response.machine.givenName}</p>
                </li>
            </ul>
            <h6>New Name</h6>
            <div class="input-field">
                <input value='${response.machine.givenName}' id="new_name_form" type="text">
                <label for="new_name_form" class="active">New Machine Name</label>
            </div>
            <h6>Machine Information</h6>
            <table class="highlight">
                <tbody>
                    <tr>
                        <td><b>Machine ID</b></td>
                        <td>${response.machine.id}</td>
                    </tr>
                    <tr>
                        <td><b>Hostname</b></td>
                        <td>${response.machine.name}</td>
                    </tr>
                    <tr>
                        <td><b>User</b></td>
                        <td>${response.machine.user.name}</td>
                    </tr>
                </tbody>
            </table>
            `
            modal_body.innerHTML = body_html
            modal_confirm.setAttribute('onclick', 'rename_machine('+machine_id+')')
        }
    })
}

function load_modal_add_machine() {
    $.ajax({
        type: "POST", 
        url: "api/get_users",
        success: function(response) {
            modal_body = document.getElementById('default_add_new_machine_modal');
            modal_confirm = document.getElementById('new_machine_modal_confirm');

            select_html = `
            <div class="col s12 m6">
                <div class="input-field">
                    <i class="material-icons prefix">language</i>
                    <select id='add_machine_user_select'>
                        <option value="" disabled selected>Select a User</option>`
            for (let i=0; i < response.users.length; i++) {
                var name = response["users"][i]["name"]
                select_html = select_html+`<option value="${name}">${name}</option>`
            }
            select_html = select_html + `
                        <label>Select a User</label>
                    </select>
                </div>
            </div>`
            select_html = select_html + `
            <div class="col s12 m6">
                <div class="input-field">
                    <i class="material-icons prefix">vpn_key</i>
                    <input id="add_machine_key_field" type="password">
                    <label for="add_machine_key_field">Machine Registration Key</label>
                </div>
            </div>`
            for (let i=0; i < response.users.length; i++) {
                var name = response["users"][i]["name"]
                select_html = select_html+`<p><br></p>`
            }
            select_html = select_html+`<p><br></p>`
            select_html = select_html+`<p><br></p>`

            modal_body.innerHTML = select_html
            // Initialize the form and the machine tabs
            M.FormSelect.init(document.querySelectorAll('select'))
            M.Tabs.init(document.getElementById('new_machine_tabs'));
        }
    })
}

//-----------------------------------------------------------
// Machine Page Actions
//-----------------------------------------------------------
function delete_chip(machine_id, chipsData) {
    // We need to get ALL the current tags -- We don't care about what's deleted, just what's remaining
    // chipsData is an array generated from from the creation of the array.
    chips = JSON.stringify(chipsData)

    var formattedData = [];
    for (let tag in chipsData) {
        formattedData[tag] = '"tag:'+chipsData[tag].tag+'"'
    }
    var tags_list = '{"tags": [' + formattedData + ']}'
    var data = {"id": machine_id, "tags_list": tags_list}

    $.ajax({
        type:"POST", 
        url: "api/set_machine_tags",
        data: JSON.stringify(data),
        contentType: "application/json",
        success: function(response) {
            M.toast({html: 'Tag removed.'});
        }
    })
}

function add_chip(machine_id, chipsData) {
    chips = JSON.stringify(chipsData).toLowerCase()
    chipsData[chipsData.length - 1].tag = chipsData[chipsData.length - 1].tag.trim().replace(/\s+/g, '-')
    last_chip_fixed = chipsData[chipsData.length - 1].tag

    var formattedData = [];
    for (let tag in chipsData) {
        formattedData[tag] = '"tag:'+chipsData[tag].tag+'"'
    }
    var tags_list = '{"tags": [' + formattedData + ']}'
    var data = {"id": machine_id, "tags_list": tags_list}

    $.ajax({
        type:"POST", 
        url: "api/set_machine_tags",
        data: JSON.stringify(data),
        contentType: "application/json",
        success: function(response) {
            M.toast({html: 'Tag "' + last_chip_fixed + '" added.'});
        }
    })
}

function add_machine() {
    var key       = document.getElementById('add_machine_key_field').value
    var user = document.getElementById('add_machine_user_select').value
    var data = {"key": key, "user": user}

    if (user == "") {
        load_modal_generic("error", "User is empty", "Select a user before submitting")
        return
    }
    if (key == "") {
        load_modal_generic("error", "Key is empty", "Input the key generated by your <code>tailscale login</code> command")
        return
    }

    $.ajax({
        type: "POST", 
        url: "api/register_machine",
        data: JSON.stringify(data),
        contentType: "application/json",
        success: function(response) {
            alert("Response:  "+response)
        }
    })
}

function rename_machine(machine_id) {
    var new_name = document.getElementById('new_name_form').value;
    var data = {"id": machine_id, "new_name": new_name};

    // String to test against
    var regexIT= /[`!@#$%^&*()_+\=\[\]{};':"\\|,.<>\/?~]/;
    if (regexIT.test(new_name)) { load_modal_generic("error", "Invalid Name", "Name cannot contain special characters ('"+regexIT+"')") ;return }
    // If there are characters other than - and alphanumeric, throw an error
    if (new_name.includes(' ')) { load_modal_generic("error", "Name cannot have spaces", "Allowed characters are dashes (-) and alphanumeric characters"); return } 
    // If it is longer than 32 characters, throw an error
    if (new_name.length > 32) { load_modal_generic("error", "Name is too long", "The name name is too long.  Maximum length is 32 characters"); return }
    // If the new_name is empty, throw an error
    if (!new_name) { load_modal_generic("error", "Name can't be empty", "Please enter a machine name before submitting."); return}

    $.ajax({
        type:"POST", 
        url: "api/rename_machine",
        data: JSON.stringify(data),
        contentType: "application/json",
        success: function(response) {

            if (response.status == "True") {
                // Get the modal element and close it
                modal_element = document.getElementById('card_modal')
                M.Modal.getInstance(modal_element).close()

                document.getElementById(machine_id+'-name-container').innerHTML = machine_id+". "+new_name
                M.toast({html: 'Machine '+machine_id+' renamed to '+new_name});
            } else { 
                load_modal_generic("error", "Error setting the machine name", "Headscale response:  "+JSON.stringify(response.body.message))
            }
        }
    })
}

function move_machine(machine_id) {
    new_user = document.getElementById('move-select').value
    var data = {"id": machine_id, "new_user": new_user};

    $.ajax({
        type:"POST", 
        url: "api/move_user",
        data: JSON.stringify(data),
        contentType: "application/json",
        success: function(response) {
            // Get the modal element and close it
            modal_element = document.getElementById('card_modal')
            M.Modal.getInstance(modal_element).close()

            document.getElementById(machine_id+'-user-container').innerHTML = response.machine.user.name
            document.getElementById(machine_id+'-ns-badge').innerHTML = response.machine.user.name

            // Get the color and set it
            var user_color = get_color(response.machine.user.id)
            document.getElementById(machine_id+'-ns-badge').className = "badge ipinfo " + user_color + " white-text hide-on-small-only"

            M.toast({html:  "'"+response.machine.givenName+"' moved to user "+response.machine.user.name});
        }
    })
}

function delete_machine(machine_id) {
    var data = {"id": machine_id};
    $.ajax({
        type: "POST", 
        url: "api/delete_machine",
        data: JSON.stringify(data),
        contentType: "application/json",
        success: function(response) {
            // Get the modal element and close it
            modal_element = document.getElementById('card_modal')
            M.Modal.getInstance(modal_element).close()

            // When the machine is deleted, hide its collapsible:
            document.getElementById(machine_id+'-main-collapsible').className = "collapsible popout hide";

            M.toast({html: 'Machine deleted.'});
        }
    })
}

function toggle_route(route_id, current_state) {
    var data = {"route_id": route_id, "current_state": current_state}
    $.ajax({
        type:"POST", 
        url: "api/update_route",
        data: JSON.stringify(data),
        contentType: "application/json",
        success: function(response) {
            // Response is a JSON object containing the Headscale API response of /v1/api/machines/<id>/route
            var element         = document.getElementById(route_id);
            var disabledClass   = "waves-effect waves-light btn-small red lighten-2 tooltipped";
            var enabledClass    = "waves-effect waves-light btn-small green lighten-2 tooltipped";
            var disabledTooltip = "Click to enable"
            var enabledTooltip  = "Click to disable"
            var disableState    = "False"
            var enableState     = "True"
            var action_taken    = "unchanged.";
            
            if (element.className == disabledClass) {
                // 1.  Change the class to change the color of the icon
                // 2.  Change the "action taken" for the M.toast popup
                // 3.  Change the tooltip to say "Click to enable/disable"
                element.className  = enabledClass
                var action_taken   = "enabled."
                element.setAttribute('data-tooltip', enabledTooltip)
                element.setAttribute('onclick', 'toggle_route('+route_id+', "'+enableState+'")')
            } else if (element.className == enabledClass) {
                element.className    = disabledClass
                var action_taken     = "disabled."
                element.setAttribute('data-tooltip', disabledTooltip)
                element.setAttribute('onclick', 'toggle_route('+route_id+', "'+disableState+'")')
            }
            M.toast({html: 'Route '+action_taken});
        }
    })
}

//-----------------------------------------------------------
// Machine Page Helpers
//-----------------------------------------------------------
function btn_toggle(state) {
    if (state == "show" ) { document.getElementById('new_machine_modal_confirm').className = 'green btn-flat white-text'      }
    else                  { document.getElementById('new_machine_modal_confirm').className = 'green btn-flat white-text hide' }
}

//-----------------------------------------------------------
// User Page Actions
//-----------------------------------------------------------
function rename_user(user_id, old_name) {
    var new_name = document.getElementById('new_user_name_form').value;
    var data = {"old_name": old_name, "new_name": new_name}

    // String to test against
    var regexIT= /[`!@#$%^&*()_+\=\[\]{};':"\\|,.<>\/?~]/;
    if (regexIT.test(new_name)) { load_modal_generic("error", "Invalid Name", "Name cannot contain special characters ('"+regexIT+"')") ;return }
    // If there are characters other than - and alphanumeric, throw an error
    if (new_name.includes(' ')) { load_modal_generic("error", "Name cannot have spaces", "Allowed characters are dashes (-) and alphanumeric characters"); return } 
    // If it is longer than 32 characters, throw an error
    if (new_name.length > 32) { load_modal_generic("error", "Name is too long", "The user name is too long.  Maximum length is 32 characters"); return }
    // If the new_name is empty, throw an error
    if (!new_name) { load_modal_generic("error", "Name can't be empty", "The user name cannot be empty."); return}

    $.ajax({
        type: "POST", 
        url: "api/rename_user",
        data: JSON.stringify(data),
        contentType: "application/json",
        success: function(response) {
            if (response.status == "True") {
                // Get the modal element and close it
                modal_element = document.getElementById('card_modal')
                M.Modal.getInstance(modal_element).close()
                
                // Rename the user on the page:
                document.getElementById(user_id+'-name-span').innerHTML = new_name

                // Set the button to use the NEW name as the OLD name for both buttons
                var rename_button_sm = document.getElementById(user_id+'-rename-user-sm')
                rename_button_sm.setAttribute('onclick', 'load_modal_rename_user('+user_id+', "'+new_name+'")')
                var rename_button_lg = document.getElementById(user_id+'-rename-user-lg')
                rename_button_lg.setAttribute('onclick', 'load_modal_rename_user('+user_id+', "'+new_name+'")')

                // Send the completion toast
                M.toast({html: "User '"+old_name+"' renamed to '"+new_name+"'."})
            } else { 
                load_modal_generic("error", "Error setting user name", "Headscale response:  "+JSON.stringify(response.body.message))
            }
        }
    })
}

function delete_user(user_id, user_name) {
    var data = {"name": user_name};
    $.ajax({
        type: "POST", 
        url: "api/delete_user",
        data: JSON.stringify(data),
        contentType: "application/json",
        success: function(response) {
            if (response.status == "True") {
                // Get the modal element and close it
                modal_element = document.getElementById('card_modal')
                M.Modal.getInstance(modal_element).close()

                // When the machine is deleted, hide its collapsible:
                document.getElementById(user_id+'-main-collapsible').className = "collapsible popout hide";

                M.toast({html: 'User deleted.'});
            } else { 
                // We errored.  Decipher the error Headscale sent us and display it:
                load_modal_generic("error", "Error deleting user", "Headscale response:  "+JSON.stringify(response.body.message))
            }
        }
    })
}

function add_user() {
    var user_name = document.getElementById('add_user_name_field').value
    var data = {"name": user_name}
    $.ajax({
        type: "POST", 
        url: "api/add_user",
        data: JSON.stringify(data),
        contentType: "application/json",
        success: function(response) {
            if (response.status == "True") {
                // Get the modal element and close it
                modal_element = document.getElementById('card_modal')
                M.Modal.getInstance(modal_element).close()

                // Send the completion toast
                M.toast({html: "User '"+user_name+"' added to Headscale.  Refreshing..."})
                window.location.reload()
            } else { 
                // We errored.  Decipher the error Headscale sent us and display it:
                load_modal_generic("error", "Error adding  user", "Headscale response:  "+JSON.stringify(response.body.message))
            }
        }
    })
}

function add_preauth_key(user_name) {
    var date       = document.getElementById('preauth_key_expiration_date').value
    var ephemeral  = document.getElementById('checkbox-ephemeral').checked
    var reusable   = document.getElementById('checkbox-reusable').checked
    var expiration = date+"T00:00:00.000Z" // Headscale format.

    // If there is no date, error:
    if (!date) {load_modal_generic("error", "Invalid Date", "Please enter a valid date"); return}
    var data = {"user": user_name, "reusable": reusable, "ephemeral": ephemeral, "expiration": expiration}

    $.ajax({
        type: "POST", 
        url: "api/add_preauth_key",
        data: JSON.stringify(data),
        contentType: "application/json",
        success: function(response) {
            if (response.status == "True") {
                // Send the completion toast
                M.toast({html: 'PreAuth key created in user '+user_name})
                // If this is successfull, we should reload the table and close the modal:
                var user_data = {"name": user_name}
                $.ajax({
                    type: "POST", 
                    url: "api/build_preauthkey_table",
                    data: JSON.stringify(user_data),
                    contentType: "application/json",
                    success: function(table_data) {
                        table = document.getElementById(user_name+'-preauth-keys-collection')
                        table.innerHTML = table_data
                        // The tooltips need to be re-initialized afterwards:
                        M.Tooltip.init(document.querySelectorAll('.tooltipped'))
                    }
                })
                // Get the modal element and close it
                modal_element = document.getElementById('card_modal')
                M.Modal.getInstance(modal_element).close()

                // The tooltips need to be re-initialized afterwards:
                M.Tooltip.init(document.querySelectorAll('.tooltipped'))

            } else { 
                load_modal_generic("error", "Error adding a pre-auth key", "Headscale response:  "+JSON.stringify(response.body.message))
            }
        }
    })
}

function expire_preauth_key(user_name, key) {
    var data = {"user": user_name, "key": key}

    $.ajax({
        type: "POST", 
        url: "api/expire_preauth_key",
        data: JSON.stringify(data),
        contentType: "application/json",
        success: function(response) {
            if (response.status == "True") {
                // Send the completion toast
                M.toast({html: 'PreAuth expired in '+user_name})
                // If this is successfull, we should reload the table and close the modal:
                var user_data = {"name": user_name}
                $.ajax({
                    type: "POST", 
                    url: "api/build_preauthkey_table",
                    data: JSON.stringify(user_data),
                    contentType: "application/json",
                    success: function(table_data) {
                        table = document.getElementById(user_name+'-preauth-keys-collection')
                        table.innerHTML = table_data
                        // The tooltips need to be re-initialized afterwards:
                        M.Tooltip.init(document.querySelectorAll('.tooltipped'))
                    }
                })
                // Get the modal element and close it
                modal_element = document.getElementById('card_modal')
                M.Modal.getInstance(modal_element).close()

                // The tooltips need to be re-initialized afterwards:
                M.Tooltip.init(document.querySelectorAll('.tooltipped'))

            } else { 
                load_modal_generic("error", "Error expiring a pre-auth key", "Headscale response:  "+JSON.stringify(response.body.message))
            }
        }
    })
}

//-----------------------------------------------------------
// User Page Helpers
//-----------------------------------------------------------
// Toggle expired items on the Users PreAuth section:
function toggle_expired() {
    var toggle_hide = document.getElementsByClassName('expired-row');
    var hidden  = document.getElementsByClassName('expired-row hide');

    if (hidden.length == 0) {
        for (var i = 0; i < toggle_hide.length; i++) {
            toggle_hide[i].className = "expired-row hide";
        }
    } else if (hidden.length > 0) {
        for (var i = 0; i < toggle_hide.length; i++) {
            toggle_hide[i].className = "expired-row";
        }
    }
}

// Copy a PreAuth Key to the clipboard.  Show only the Prefix by default
function copy_preauth_key(key) {
    navigator.clipboard.writeText(key);
    M.toast({html: 'PreAuth key copied to clipboard.'})
}