From 00b32704c4d243a44982e1ec13c94c5607b83e58 Mon Sep 17 00:00:00 2001
From: jx163 <jx163@students.waikato.ac.nz>
Date: Wed, 1 Oct 2025 14:27:43 +1300
Subject: [PATCH] Add Glances multi-system monitoring widget

---
 src/components/Widgets/GlCompactMetrics.vue | 702 ++++++++++++++++++++
 src/components/Widgets/WidgetBase.vue       |   1 +
 2 files changed, 703 insertions(+)
 create mode 100644 src/components/Widgets/GlCompactMetrics.vue

diff --git a/src/components/Widgets/GlCompactMetrics.vue b/src/components/Widgets/GlCompactMetrics.vue
new file mode 100644
index 00000000..1e59290e
--- /dev/null
+++ b/src/components/Widgets/GlCompactMetrics.vue
@@ -0,0 +1,702 @@
+<template>
+  <div class="metrics-wrapper">
+    <div v-if="options.label" class="widget-label">
+      {{ options.label }}
+    </div>
+
+    <!-- Compact table view -->
+    <div v-if="!selectedSystem" class="compact-table">
+      <div class="table-header">
+        <div class="node-column">Node</div>
+        <div class="metric-column">CPU</div>
+        <div class="metric-column">Memory</div>
+        <div class="metric-column">Disk</div>
+      </div>
+
+      <div class="table-body">
+        <div
+          v-for="(system, index) in options.systems"
+          :key="index"
+          class="table-row"
+          @click="showSystemDetails(system)"
+        >
+          <div class="node-column">
+            <div class="node-name">{{ system.header }}</div>
+            <div class="node-ip">{{ system.url.replace(/^https?:\/\//, '') }}</div>
+          </div>
+          <div class="metric-column">
+            <span class="metric-value" :class="getMetricClass('cpu', system.url)">
+              {{ getMetricDisplay(system.url, 'cpu') }}
+            </span>
+          </div>
+          <div class="metric-column">
+            <span class="metric-value" :class="getMetricClass('mem', system.url)">
+              {{ getMetricDisplay(system.url, 'mem') }}
+            </span>
+          </div>
+          <div class="metric-column">
+            <span class="metric-value" :class="getMetricClass('disk', system.url)">
+              {{ getMetricDisplay(system.url, 'disk') }}
+            </span>
+          </div>
+        </div>
+      </div>
+    </div>
+
+    <!-- Detail view -->
+    <div v-if="selectedSystem" class="detail-view">
+      <div class="detail-header">
+        <h3>{{ selectedSystem.header }}</h3>
+        <button class="back-btn" @click="backToCompactView">
+          Back
+        </button>
+      </div>
+
+      <div class="detail-content" v-if="!errors[selectedSystem.url]">
+        <div class="detail-section">
+          <h4>System Information</h4>
+          <div class="info-grid">
+            <div class="info-item">
+              <span class="info-label">Hostname:</span>
+              <span class="info-value">{{ detailData.system?.hostname || '-' }}</span>
+            </div>
+            <div class="info-item">
+              <span class="info-label">OS:</span>
+              <span class="info-value">{{ detailData.system?.os_name || '-' }}</span>
+            </div>
+            <div class="info-item">
+              <span class="info-label">Uptime:</span>
+              <span class="info-value">{{ getUptimeDisplay() }}</span>
+            </div>
+          </div>
+        </div>
+
+        <div class="detail-section">
+          <h4>CPU Usage</h4>
+          <div class="progress-bar">
+            <div
+              class="progress-fill"
+              :class="getProgressClass(getMetricValue(selectedSystem.url, 'cpu') || 0)"
+              :style="{ width: (getMetricValue(selectedSystem.url, 'cpu') || 0) + '%' }"
+            ></div>
+            <span class="progress-text">
+              {{ getMetricValue(selectedSystem.url, 'cpu') !== null
+              ? getMetricValue(selectedSystem.url, 'cpu') + '%' : '-' }}
+            </span>
+          </div>
+        </div>
+
+        <div class="detail-section">
+          <h4>Memory Usage</h4>
+          <div class="progress-bar">
+            <div
+              class="progress-fill"
+              :class="getProgressClass(getMetricValue(selectedSystem.url, 'mem') || 0)"
+              :style="{ width: (getMetricValue(selectedSystem.url, 'mem') || 0) + '%' }"
+            ></div>
+            <span class="progress-text">
+              {{ getMetricValue(selectedSystem.url, 'mem') !== null
+              ? getMetricValue(selectedSystem.url, 'mem') + '%' : '-' }}
+            </span>
+          </div>
+          <div class="memory-details" v-if="detailData.mem">
+            <small>
+              Used: {{ formatBytes(detailData.mem.used) }} /
+              Total: {{ formatBytes(detailData.mem.total) }}
+            </small>
+          </div>
+        </div>
+
+        <div class="detail-section">
+          <h4>Disk Usage</h4>
+          <div class="progress-bar">
+            <div
+              class="progress-fill"
+              :class="getProgressClass(getMetricValue(selectedSystem.url, 'disk') || 0)"
+              :style="{ width: (getMetricValue(selectedSystem.url, 'disk') || 0) + '%' }"
+            ></div>
+            <span class="progress-text">
+              {{ getMetricValue(selectedSystem.url, 'disk') !== null
+              ? getMetricValue(selectedSystem.url, 'disk') + '%' : '-' }}
+            </span>
+          </div>
+        </div>
+
+        <div class="detail-section" v-if="detailData.fs && detailData.fs.length > 0">
+          <h4>Disk Partitions</h4>
+          <div class="partition-list">
+            <div v-for="(disk, index) in detailData.fs.filter(d => d.mnt_point && d.size > 0)"
+                 :key="index" class="partition-item">
+              <div class="partition-path">{{ disk.mnt_point }}</div>
+              <div class="partition-usage">
+                <span class="usage-text">
+                  {{ formatBytes(disk.used || 0) }} / {{ formatBytes(disk.size || 0) }}
+                </span>
+                <span class="usage-percent"
+                      :class="getUsageClass(
+                        disk.size > 0 ? Math.round(((disk.used || 0) / disk.size) * 100)
+                        : 0)">
+                  ({{ disk.size > 0 ? Math.round(((disk.used || 0) / disk.size) * 100) : 0 }}%)
+                </span>
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+
+      <div v-if="errors[selectedSystem.url]" class="error-message">
+        Unable to retrieve details for {{ selectedSystem.header }}
+      </div>
+    </div>
+  </div>
+</template>
+
+<script>
+import axios from 'axios';
+import WidgetMixin from '@/mixins/WidgetMixin';
+
+export default {
+  mixins: [WidgetMixin],
+  data() {
+    return {
+      metricsData: {},
+      detailData: {},
+      loading: {},
+      errors: {},
+      refreshInterval: null,
+      selectedSystem: null,
+    };
+  },
+  computed: {
+    refreshRate() {
+      return this.options.refreshRate || 5000;
+    },
+  },
+  mounted() {
+    this.initializeSystems();
+    this.fetchAllMetrics();
+    this.startRefreshInterval();
+  },
+  beforeDestroy() {
+    if (this.refreshInterval) {
+      clearInterval(this.refreshInterval);
+    }
+  },
+  methods: {
+    initializeSystems() {
+      this.options.systems.forEach((system) => {
+        this.$set(this.metricsData, system.url, {});
+        this.$set(this.loading, system.url, false);
+        this.$set(this.errors, system.url, false);
+      });
+    },
+
+    async fetchAllMetrics() {
+      const promises = this.options.systems.map((system) => this.fetchSystemMetrics(system));
+      await Promise.allSettled(promises);
+    },
+
+    async fetchSystemMetrics(system) {
+      const { url } = system;
+      this.$set(this.loading, url, true);
+      // Don't reset error state here to prevent flickering
+
+      try {
+        const apiUrl = `${url.replace(/\/$/, '')}/api/4/all`;
+        const response = await axios.get(apiUrl, { timeout: 8000 });
+        this.processMetricsData(url, response.data);
+
+        // Clear error state only on successful fetch
+        this.$set(this.errors, url, false);
+
+        // Update detail data if this system is currently selected
+        if (this.selectedSystem && this.selectedSystem.url === url) {
+          this.detailData = response.data;
+        }
+      } catch (error) {
+        console.error(`Failed to fetch metrics for ${system.header}:`, error);
+        this.$set(this.errors, url, true);
+
+        // Clear detail data if this is the selected system and it fails
+        if (this.selectedSystem && this.selectedSystem.url === url) {
+          this.detailData = {};
+        }
+      } finally {
+        this.$set(this.loading, url, false);
+      }
+    },
+
+    processMetricsData(systemUrl, data) {
+      const processedData = {};
+
+      if (data.cpu) {
+        processedData.cpu = Math.round(data.cpu.total || 0);
+      }
+      if (data.mem) {
+        processedData.mem = Math.round(data.mem.percent || 0);
+      }
+      if (data.fs && Array.isArray(data.fs)) {
+        let totalSize = 0;
+        let totalUsed = 0;
+        data.fs.forEach((disk) => {
+          if (disk.size && disk.used) {
+            totalSize += disk.size;
+            totalUsed += disk.used;
+          }
+        });
+        processedData.disk = totalSize > 0 ? Math.round((totalUsed / totalSize) * 100) : 0;
+      }
+
+      this.$set(this.metricsData, systemUrl, processedData);
+    },
+
+    getMetricValue(systemUrl, metric, defaultValue = null) {
+      return this.metricsData[systemUrl]?.[metric] ?? defaultValue;
+    },
+
+    getMetricDisplay(systemUrl, metric) {
+      // Display '-' if there's an error or no data available
+      if (this.errors[systemUrl] || this.getMetricValue(systemUrl, metric) === null) {
+        return '-';
+      }
+      return `${this.getMetricValue(systemUrl, metric)}%`;
+    },
+
+    getMetricClass(metric, systemUrl) {
+      if (this.errors[systemUrl] || this.getMetricValue(systemUrl, metric) === null) {
+        return 'error';
+      }
+      const value = this.getMetricValue(systemUrl, metric, 0);
+      return this.getUsageClass(value);
+    },
+
+    // Three states: green (<50), orange (50-90), red (>90)
+    getUsageClass(percentage) {
+      if (percentage > 90) return 'critical';
+      if (percentage >= 50) return 'warning';
+      return 'good';
+    },
+
+    getProgressClass(percentage) {
+      if (percentage > 90) return 'progress-critical';
+      if (percentage >= 50) return 'progress-warning';
+      return 'progress-good';
+    },
+
+    showSystemDetails(system) {
+      this.selectedSystem = system;
+      this.detailData = {}; // Clear previous data immediately
+      this.fetchSystemDetails(system);
+    },
+
+    async fetchSystemDetails(system) {
+      try {
+        const apiUrl = `${system.url.replace(/\/$/, '')}/api/4/all`;
+        const response = await axios.get(apiUrl, { timeout: 8000 });
+        this.detailData = response.data;
+
+        // Clear error state on successful fetch
+        this.$set(this.errors, system.url, false);
+
+        // Try to fetch uptime data separately
+        try {
+          const uptimeUrl = `${system.url.replace(/\/$/, '')}/api/4/uptime`;
+          const uptimeResponse = await axios.get(uptimeUrl, { timeout: 5000 });
+          this.detailData.uptimeData = uptimeResponse.data;
+        } catch (uptimeError) {
+          // Uptime API unavailable, will use alternative data sources
+        }
+      } catch (error) {
+        console.error(`Failed to fetch details for ${system.header}:`, error);
+        this.$set(this.errors, system.url, true);
+        this.detailData = {}; // Clear detail data on error
+      }
+    },
+
+    backToCompactView() {
+      this.selectedSystem = null;
+      this.detailData = {};
+    },
+
+    startRefreshInterval() {
+      this.refreshInterval = setInterval(() => {
+        this.fetchAllMetrics();
+      }, this.refreshRate);
+    },
+
+    formatBytes(bytes) {
+      if (!bytes || bytes === 0 || Number.isNaN(bytes)) return '0 B';
+      const k = 1024;
+      const sizes = ['B', 'KB', 'MB', 'GB', 'TB'];
+      const i = Math.floor(Math.log(bytes) / Math.log(k));
+      return `${parseFloat((bytes / (k ** i)).toFixed(1))} ${sizes[i]}`;
+    },
+
+    formatUptime(seconds) {
+      if (!seconds || Number.isNaN(seconds) || seconds <= 0) return '-';
+
+      const days = Math.floor(seconds / 86400);
+      const hours = Math.floor((seconds % 86400) / 3600);
+      const minutes = Math.floor((seconds % 3600) / 60);
+
+      if (days > 0) {
+        return `${days} days ${hours} hours ${minutes} minutes`;
+      } else if (hours > 0) {
+        return `${hours} hours ${minutes} minutes`;
+      } else {
+        return `${minutes} minutes`;
+      }
+    },
+
+    getUptimeDisplay() {
+      // Try different data sources in priority order
+      let uptime = null;
+
+      // 1. Dedicated uptime API data
+      if (this.detailData.uptimeData) {
+        uptime = this.detailData.uptimeData;
+      } else if (this.detailData.uptime) {
+        // 2. Uptime field (may be string format)
+        uptime = this.detailData.uptime;
+
+        if (typeof uptime === 'string') {
+          return uptime.replace('days', 'days').replace('day', 'day');
+        }
+      } else if (this.detailData.system && this.detailData.system.uptime) {
+        // 3. System object uptime
+        uptime = this.detailData.system.uptime;
+      } else if (this.detailData.boot_time) {
+        // 4. Calculate from boot time
+        const now = Date.now() / 1000;
+        uptime = now - this.detailData.boot_time;
+      }
+
+      // Format if it's a number
+      if (typeof uptime === 'number') {
+        return this.formatUptime(uptime);
+      }
+
+      return '-';
+    },
+  },
+};
+</script>
+
+<style scoped>
+.metrics-wrapper {
+  padding: 0.8rem;
+  color: #fff;
+  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
+}
+
+.widget-label {
+  margin-bottom: 0.8rem;
+  font-weight: bold;
+  font-size: 1.1rem;
+}
+
+/* Compact table styles */
+.compact-table {
+  border-radius: 8px;
+  overflow: hidden;
+  background: rgba(255, 255, 255, 0.05);
+  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
+}
+
+.table-header {
+  display: flex;
+  background: rgba(255, 255, 255, 0.15);
+  padding: 0.6rem 0;
+  font-weight: bold;
+  font-size: 0.85rem;
+  border-bottom: 2px solid rgba(255, 255, 255, 0.1);
+}
+
+.table-body {
+  display: flex;
+  flex-direction: column;
+}
+
+.table-row {
+  display: flex;
+  padding: 0.5rem 0;
+  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
+  cursor: pointer;
+  transition: all 0.3s ease;
+  position: relative;
+}
+
+.table-row:hover {
+  background: rgba(255, 255, 255, 0.08);
+  transform: translateX(2px);
+}
+
+.table-row:last-child {
+  border-bottom: none;
+}
+
+.node-column {
+  flex: 2;
+  padding: 0 0.5rem;
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+}
+
+.metric-column {
+  flex: 1;
+  padding: 0 0.5rem;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  text-align: center;
+}
+
+.node-name {
+  font-weight: 600;
+  font-size: 0.85rem;
+  line-height: 1.2;
+}
+
+.node-ip {
+  font-size: 0.7rem;
+  color: #aaa;
+  line-height: 1;
+}
+
+.metric-value {
+  font-size: 0.8rem;
+  font-weight: 600;
+  padding: 0.25rem 0.5rem;
+  border-radius: 6px;
+  transition: all 0.3s ease;
+}
+
+.metric-value.good {
+  color: #4CAF50;
+}
+
+.metric-value.warning {
+  color: #FF9800;
+}
+
+.metric-value.critical {
+  color: #F44336;
+}
+
+.metric-value.error {
+  color: #BDBDBD;
+}
+
+/* Detail view styles */
+.detail-view {
+  position: relative;
+  animation: fadeIn 0.3s ease-in-out;
+}
+
+@keyframes fadeIn {
+  from { opacity: 0; transform: translateY(10px); }
+  to { opacity: 1; transform: translateY(0); }
+}
+
+.detail-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-bottom: 1rem;
+  padding-bottom: 0.5rem;
+  border-bottom: 2px solid rgba(255, 255, 255, 0.2);
+}
+
+.detail-header h3 {
+  margin: 0;
+  font-size: 1.2rem;
+  font-weight: bold;
+  color: #fff;
+}
+
+.back-btn {
+  display: flex;
+  align-items: center;
+  gap: 0.4rem;
+  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.2));
+  color: #fff;
+  border: none;
+  padding: 0.5rem 1rem;
+  border-radius: 8px;
+  cursor: pointer;
+  font-size: 0.8rem;
+  transition: all 0.3s ease;
+  backdrop-filter: blur(10px);
+}
+
+.back-btn:hover {
+  background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.3));
+  transform: translateY(-1px);
+  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
+}
+
+.detail-content {
+  display: flex;
+  flex-direction: column;
+  gap: 1.2rem;
+}
+
+.detail-section {
+  background: linear-gradient(135deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.08));
+  padding: 1rem;
+  border-radius: 10px;
+  border: 1px solid rgba(255, 255, 255, 0.1);
+  backdrop-filter: blur(10px);
+  transition: all 0.3s ease;
+}
+
+.detail-section h4 {
+  margin: 0 0 0.6rem 0;
+  font-size: 0.95rem;
+  font-weight: 600;
+  color: #E0E0E0;
+  text-transform: uppercase;
+  letter-spacing: 0.5px;
+}
+
+.info-grid {
+  display: grid;
+  grid-template-columns: 1fr;
+  gap: 0.4rem;
+}
+
+.info-item {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  font-size: 0.8rem;
+  padding: 0.3rem 0;
+  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
+}
+
+.info-label {
+  color: #B0B0B0;
+  font-weight: 500;
+}
+
+.info-value {
+  color: #fff;
+  font-weight: 600;
+}
+
+.progress-bar {
+  position: relative;
+  height: 24px;
+  background: rgba(255, 255, 255, 0.1);
+  border-radius: 12px;
+  overflow: hidden;
+  margin-bottom: 0.4rem;
+  border: 1px solid rgba(255, 255, 255, 0.1);
+}
+
+.progress-fill {
+  height: 100%;
+  transition: all 0.5s ease;
+  position: relative;
+  overflow: hidden;
+}
+
+.progress-good {
+  background: #4CAF50;
+}
+
+.progress-warning {
+  background: #FF9800;
+}
+
+.progress-critical {
+  background: #F44336;
+  animation: criticalPulse 1.5s infinite alternate;
+}
+
+@keyframes criticalPulse {
+  0% { opacity: 0.8; }
+  100% { opacity: 1; }
+}
+
+.progress-text {
+  position: absolute;
+  top: 50%;
+  left: 50%;
+  transform: translate(-50%, -50%);
+  font-size: 0.75rem;
+  font-weight: 600;
+  color: #fff;
+  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.7);
+  z-index: 10;
+}
+
+.memory-details,
+.disk-details {
+  margin-top: 0.4rem;
+  color: #B0B0B0;
+}
+
+.partition-list {
+  display: flex;
+  flex-direction: column;
+  gap: 0.5rem;
+  max-height: 320px;
+  overflow-y: auto;
+}
+
+.partition-item {
+  padding: 0.6rem;
+  background: linear-gradient(135deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.06));
+  border-radius: 8px;
+  border-left: 4px solid #007bff;
+  transition: all 0.3s ease;
+}
+
+.partition-path {
+  font-size: 0.8rem;
+  font-weight: 500;
+  color: #fff;
+  margin-bottom: 0.3rem;
+  font-family: 'Courier New', monospace;
+  word-break: break-all;
+}
+
+.partition-usage {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  font-size: 0.7rem;
+}
+
+.usage-text {
+  color: #ccc;
+}
+
+.usage-percent {
+  font-weight: 600;
+}
+
+.good {
+  color: #4CAF50 !important;
+}
+
+.warning {
+  color: #FF9800 !important;
+}
+
+.critical {
+  color: #F44336 !important;
+}
+
+.error-message {
+  text-align: center;
+  color: #EF5350;
+  padding: 2rem;
+  font-size: 0.9rem;
+  background: rgba(244, 67, 54, 0.1);
+  border-radius: 8px;
+  border: 1px solid rgba(244, 67, 54, 0.3);
+}
+</style>
diff --git a/src/components/Widgets/WidgetBase.vue b/src/components/Widgets/WidgetBase.vue
index a148b476..977d88c0 100644
--- a/src/components/Widgets/WidgetBase.vue
+++ b/src/components/Widgets/WidgetBase.vue
@@ -127,6 +127,7 @@ const COMPAT = {
   weather: 'Weather',
   'weather-forecast': 'WeatherForecast',
   'xkcd-comic': 'XkcdComic',
+  'gl-compact-metrics': 'GlCompactMetrics',
 };
 
 export default {