Add checkbox for monitoring when creating node.

frontend/src/components/BaseCard.vue

@@ -0,0 +1,95 @@
+<script setup lang="ts">
+import { onMounted, ref } from "vue";
+import type { ComponentVariant } from "@/types";
+
+interface Props {
+    variant: ComponentVariant;
+    icon: string;
+    scrollIntoView: boolean;
+}
+
+const props = defineProps<Props>();
+const element = ref<HTMLElement>();
+
+function scrollIntoView() {
+    element.value?.scrollIntoView({
+        behavior: "smooth",
+        block: "nearest",
+    });
+}
+
+if (props.scrollIntoView) {
+    onMounted(scrollIntoView);
+}
+</script>
+
+<template>
+    <div ref="element" :class="['card', props.variant]">
+        <i :class="['icon', 'fa', `fa-${props.icon}`]" aria-hidden="true" />
+        <slot />
+    </div>
+</template>
+
+<style lang="scss">
+@import "../scss/variables";
+
+.card {
+    position: relative;
+    clear: both;
+
+    min-height: $base-card-min-height;
+
+    margin: $base-card-margin;
+    padding: $base-card-padding;
+
+    border: {
+        width: $base-card-border-width;
+        style: $base-card-border-style;
+        radius: $base-card-border-radius;
+    }
+
+    font-weight: $base-card-font-weight;
+
+    *:nth-child(2) {
+        margin-top: 0;
+    }
+
+    *:last-child {
+        margin-bottom: 0;
+    }
+
+    .icon {
+        float: left;
+        margin: $base-card-icon-margin;
+        font-size: $base-card-icon-size;
+    }
+
+    a:focus {
+        outline: {
+            width: $base-card-link-focus-outline-width;
+            style: $base-card-link-focus-outline-style;
+        }
+    }
+}
+
+@each $variant, $color in $variant-colors {
+    .card.#{$variant} {
+        border-color: $color;
+
+        background-color: darken($color, 30%);
+        color: lighten($color, 30%);
+
+        a {
+            color: darken($color, 30%);
+
+            &:hover {
+                color: darken($color, 30%);
+            }
+
+            &:focus {
+                outline-color: darken($color, 30%);
+            }
+        }
+    }
+}
+</style>

frontend/src/components/ErrorCard.vue

@@ -1,49 +1,16 @@
 <script setup lang="ts">
-import { onMounted, ref } from "vue";
-
-const element = ref<HTMLElement>();
-
-function scrollIntoView() {
-    element.value?.scrollIntoView({
-        behavior: "smooth",
-        block: "nearest",
-    });
-}
-
-onMounted(scrollIntoView);
+import BaseCard from "@/components/BaseCard.vue";
+import { ComponentVariant } from "@/types";
 </script>
 
 <template>
-    <div ref="element" class="error-card">
-        <slot></slot>
-    </div>
+    <BaseCard
+        :variant="ComponentVariant.DANGER"
+        icon="warning"
+        :scrollIntoView="true"
+    >
+        <slot />
+    </BaseCard>
 </template>
 
-<style lang="scss">
-@import "../scss/variables";
-
-.error-card {
-    margin: $error-card-margin;
-    padding: $error-card-padding;
-
-    border: $error-card-border;
-    border-radius: $error-card-border-radius;
-
-    font-weight: $error-card-font-weight;
-
-    background-color: $error-card-background-color;
-    color: $error-card-color;
-
-    a {
-        color: $error-card-link-color;
-
-        &:hover {
-            color: $error-card-link-hover-color;
-        }
-
-        &:focus {
-            outline: $error-card-link-focus-outline;
-        }
-    }
-}
-</style>
+<style lang="scss"></style>

frontend/src/components/InfoCard.vue

@@ -0,0 +1,16 @@
+<script setup lang="ts">
+import BaseCard from "@/components/BaseCard.vue";
+import { ComponentVariant } from "@/types";
+</script>
+
+<template>
+    <BaseCard
+        :variant="ComponentVariant.INFO"
+        icon="info-circle"
+        :scrollIntoView="false"
+    >
+        <slot />
+    </BaseCard>
+</template>
+
+<style lang="scss"></style>

frontend/src/components/form/CheckboxInput.vue

@@ -0,0 +1,135 @@
+<script setup lang="ts">
+import { ref } from "vue";
+import ExpandableHelpBox from "@/components/ExpandableHelpBox.vue";
+
+interface Props {
+    name: string;
+    modelValue?: boolean;
+    label: string;
+    help?: string;
+}
+
+const props = defineProps<Props>();
+const emit = defineEmits<{
+    (e: "update:modelValue", value: boolean): void;
+}>();
+
+const input = ref<HTMLInputElement>();
+const focussed = ref(false);
+
+function onChange() {
+    const element = input.value;
+    if (!element) {
+        console.warn("Could not get referenced input element.");
+        return;
+    }
+    emit("update:modelValue", element.checked);
+}
+
+function onFocus() {
+    focussed.value = true;
+}
+
+function onBlur() {
+    focussed.value = false;
+}
+</script>
+
+<template>
+    <div
+        :class="{
+            'checkbox-input': true,
+            checked: modelValue,
+            focussed,
+        }"
+    >
+        <label>
+            <input
+                ref="input"
+                type="checkbox"
+                :name="props.name"
+                :checked="props.modelValue"
+                @change="onChange"
+                @focus="onFocus"
+                @blur="onBlur"
+            />
+            {{ props.label }}
+            <ExpandableHelpBox v-if="props.help" :text="props.help" />
+        </label>
+    </div>
+</template>
+
+<style scoped lang="scss">
+@import "../../scss/variables";
+
+.checkbox-input {
+    margin: $validation-form-input-margin;
+}
+
+input {
+    // hide the default checkbox and then rebuild a new one via label::before
+    z-index: -1;
+
+    position: absolute;
+
+    margin: 0;
+    padding: 0;
+
+    width: 0;
+    height: 0;
+
+    opacity: 0;
+
+    border: none;
+    box-shadow: none;
+}
+
+label {
+    position: relative;
+    clear: both;
+
+    display: block;
+    width: 100%;
+    font-weight: $label-font-weight;
+    cursor: pointer;
+
+    &::before {
+        float: left;
+
+        display: block;
+        vertical-align: top;
+
+        content: "";
+
+        margin: $checkbox-margin;
+
+        width: $checkbox-size;
+        height: $checkbox-size;
+
+        background-color: $input-background-color;
+        border-radius: $checkbox-border-radius;
+
+        cursor: pointer;
+    }
+
+    .checked &::before {
+        // TODO: Fallback if font does not load?
+        content: "\f00c";
+
+        //noinspection CssNoGenericFontName
+        font-family: ForkAwesome;
+
+        text-align: center;
+        line-height: $checkbox-size;
+
+        font-weight: bold;
+
+        color: $input-text-color;
+    }
+
+    .focussed &::before {
+        outline: $input-outline;
+        outline-offset: $input-outline-offset;
+    }
+}
+</style>

frontend/src/components/form/ValidationFormInput.vue

@@ -3,11 +3,13 @@ import { computed, getCurrentInstance, onMounted, ref } from "vue";
 import { type Constraint, forConstraint } from "@/shared/validation/validator";
 import ExpandableHelpBox from "@/components/ExpandableHelpBox.vue";
 
+type InputType = "text" | "number" | "password" | "email" | "tel" | "url";
+
 interface Props {
     name: string;
     modelValue?: string;
     label?: string;
-    type?: string;
+    type?: InputType;
     placeholder: string;
     constraint: Constraint;
     validationError: string;

frontend/src/components/nodes/NodeCreateForm.vue

@@ -27,6 +27,8 @@ import { route, RouteName } from "@/router";
 import RouteButton from "@/components/form/RouteButton.vue";
 import { ApiError } from "@/utils/Api";
 import NodeCoordinatesInput from "@/components/nodes/NodeCoordinatesInput.vue";
+import CheckboxInput from "@/components/form/CheckboxInput.vue";
+import InfoCard from "@/components/InfoCard.vue";
 
 const configStore = useConfigStore();
 const nodeStore = useNodeStore();
@@ -211,8 +213,57 @@ async function onSubmit() {
                 />
             </fieldset>
 
-            <fieldset>
-                <h3>TODO: Monitoring</h3>
+            <fieldset v-if="configStore.getConfig.monitoring.enabled">
+                <h3>Möchtest Du automatisiert Status-E-Mails bekommen?</h3>
+
+                <i class="monitoring-icon fa fa-heartbeat" aria-hidden="true" />
+
+                <p class="help-block">
+                    Du kannst Dich automatisiert benachrichtigen lassen, sobald
+                    Dein Knoten längere Zeit offline ist. Die erste E-Mail
+                    bekommst Du nach 3 Stunden, nach einem Tag gibt es dann
+                    nochmal eine Erinnerung. Sollte Dein Knoten nach einer Woche
+                    immernoch offline sein, bekommst Du eine letzte
+                    Status-E-Mail.
+                </p>
+
+                <p class="help-block">
+                    Du kannst den automatisierten Versand von Status-E-Mails
+                    hier selbstverständlich jederzeit wieder deaktivieren.
+                </p>
+
+                <CheckboxInput
+                    v-model="monitoringModel"
+                    name="monitoring"
+                    label="Informiert mich, wenn mein Knoten offline ist"
+                />
+
+                <InfoCard v-if="monitoringModel">
+                    <p>
+                        Zur Bestätigung Deiner E-Mail-Adresse schicken wir Dir
+                        nach dem Speichern Deiner Knotendaten eine E-Mail mit
+                        einem Bestätigungs-Link. Erst nach der Bestätigung
+                        deiner E-Mail-Adresse wirst Du informiert, falls Dein
+                        Knoten längere Zeit offline ist.
+                    </p>
+
+                    <p>
+                        Die Inbetriebnahme Deines Knotens kannst Du
+                        selbstverständlich unabhängig von der Bestätigung immer
+                        sofort duchführen.
+                    </p>
+
+                    <p v-if="emailModel">
+                        <strong>
+                            <i
+                                class="fa fa-envelope-o"
+                                aria-hidden="true"
+                                title="E-Mail-Adresse"
+                            />
+                            {{ emailModel }}
+                        </strong>
+                    </p>
+                </InfoCard>
             </fieldset>
 
             <h1>TODO: Check community bounds</h1>
@@ -243,4 +294,13 @@ async function onSubmit() {
     </ValidationForm>
 </template>
 
-<style lang="scss" scoped></style>
+<style lang="scss" scoped>
+@import "../../scss/variables";
+
+.monitoring-icon {
+    float: left;
+    margin: 0 0.25em 0.125em 0;
+    font-size: 3em;
+    color: $variant-color-primary;
+}
+</style>

frontend/src/scss/_variables.scss

@@ -99,6 +99,10 @@ $input-border-radius: 0.5em;
 $input-outline: 0.1em solid $variant-color-info;
 $input-outline-offset: 0.125em;
 
+$checkbox-size: 1.25em;
+$checkbox-margin: 0 0.5em 0 0;
+$checkbox-border-radius: 0.25em;
+
 $button-margin: 0.3em;
 $button-padding: 0.25em 0.5em;
 $button-border-radius: $input-border-radius;
@@ -115,17 +119,18 @@ $button-sizes: (
 $help-icon-color: $variant-color-info;
 $help-text-margin: 0.5em 0 0.75em 0;
 
-// Error cards
-$error-card-margin: 1em 0;
-$error-card-padding: 0.5em;
-$error-card-border: 0.1em solid $variant-color-danger;
-$error-card-border-radius: 0.5em;
-$error-card-font-weight: 600;
-$error-card-background-color: lighten($variant-color-danger, 10%);
-$error-card-color: $page-background-color;
-$error-card-link-color: darken($variant-color-danger, 30%);
-$error-card-link-hover-color: $error-card-link-color;
-$error-card-link-focus-outline: 0.1em solid $error-card-link-hover-color;
+// Cards
+$base-card-margin: 1em 0;
+$base-card-padding: 1em 0.5em;
+$base-card-border-width: 0.1em;
+$base-card-border-style: solid;
+$base-card-border-radius: 0.5em;
+$base-card-font-weight: normal;
+$base-card-link-focus-outline-width: 0.1em;
+$base-card-link-focus-outline-style: solid;
+$base-card-icon-margin: 0 0.25em 0.125em 0;
+$base-card-icon-size: 2em;
+$base-card-min-height: $base-card-icon-size;
 
 // Node map
 $node-map-aspect-ratio: math.div(16, 10);