fix(db): GetLastMetrics retourne la dernière valeur non-nulle par colonne

La requête précédente prenait la dernière ligne (paquet rapide, 2s) qui
a hdd_*/smart_* à NULL. Chaque sous-requête cible maintenant la dernière
valeur non-nulle indépendamment, ce qui restitue les données disque/smart
au rechargement même si le dernier paquet ne les contenait pas.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

dashboard/index.html

@@ -73,12 +73,12 @@
         <img id="pop-icon-img" src="" alt="" style="display:none">
         <div class="agent-icon-overlay"><i class="fa-solid fa-camera"></i><span>Changer</span></div>
       </div>
-      <input type="file" id="icon-upload" accept=".svg,.jpg,.jpeg,.png,.webp" style="display:none">
+      <input type="file" id="icon-upload" accept=".jpg,.jpeg,.png,.webp" style="display:none">
       <div style="flex:1">
         <div class="pop-host" id="pop-host">—</div>
         <div class="pop-ip" id="pop-ip">—</div>
-        <div style="font-size:10px;color:var(--ink-4);font-family:var(--font-terminal);margin-top:2px">
-          Cliquer sur l'icône pour personnaliser · SVG JPG PNG WEBP · max 128×128 px
+        <div id="icon-hint" style="font-size:10px;color:var(--ink-4);font-family:var(--font-terminal);margin-top:2px">
+          Cliquer sur l'icône pour personnaliser · JPG PNG WEBP · max 128×128 px
         </div>
       </div>
       <div class="pop-led" id="pop-led"></div>

dashboard/js/grid.js

@@ -58,7 +58,7 @@ const Grid = (() => {
         const iconContent = `<img src="${API.iconUrl(id)}" alt=""
             style="width:100%;height:100%;object-fit:cover;border-radius:7px"
             onerror="this.style.display='none';this.nextSibling.style.display='flex'">
-            <span style="display:flex;align-items:center;justify-content:center;width:100%;height:100%;color:var(--accent)">
+            <span style="display:none;align-items:center;justify-content:center;width:100%;height:100%;color:var(--accent)">
               <i class="fa-solid fa-server"></i></span>`;
 
         return `<div class="tile ${sc}" id="tile-${id}" onclick="Popups.showDetail('${esc(id)}')">
@@ -87,7 +87,7 @@ const Grid = (() => {
               <div class="g-ico" data-tip="Disque"><i class="fa-solid fa-hard-drive"></i></div>
               <div class="g-bar"><div class="g-fill ${offline ? '' : (diskPct >= (App.serverConfig?.warn_disk ?? 75) ? 'w' : '')}"
                 style="width:${offline ? 0 : (diskPct ?? 0).toFixed(0)}%"></div></div>
-              <span class="g-val">${offline ? '—' : fmtPct(diskPct)}</span>
+              <span class="g-val">${offline ? '—' : (metrics?.hdd_used && metrics?.hdd_total ? fmt(metrics.hdd_used) + '/' + fmt(metrics.hdd_total) : '—')}</span>
             </div>
           </div>
           <div class="tile-foot">
@@ -124,7 +124,7 @@ const Grid = (() => {
     function refresh(agents) {
         agents.forEach(a => {
             if (!_agents.has(a.id)) {
-                _agents.set(a.id, { agent: a, metrics: null });
+                _agents.set(a.id, { agent: a, metrics: a.last_metrics || null });
             } else {
                 _agents.get(a.id).agent = a;
             }

dashboard/js/popups.js

@@ -30,8 +30,27 @@ const Popups = (() => {
         document.getElementById('icon-upload').onchange = async (e) => {
             const file = e.target.files[0];
             if (!file) return;
-            await API.uploadIcon(agentId, file);
-            img.src = API.iconUrl(agentId) + '?t=' + Date.now();
+            const hint = document.getElementById('icon-hint');
+            try {
+                await API.uploadIcon(agentId, file);
+                const ts = '?t=' + Date.now();
+                img.src = API.iconUrl(agentId) + ts;
+                img.style.display = 'block';
+                document.getElementById('pop-icon-fa').style.display = 'none';
+                const tileImg = document.querySelector(`#tile-${CSS.escape(agentId)} .t-icon img`);
+                if (tileImg) tileImg.src = API.iconUrl(agentId) + ts;
+            } catch (err) {
+                if (hint) {
+                    hint.style.color = 'var(--err)';
+                    hint.textContent = 'Erreur : ' + (err.message || 'téléversement échoué');
+                    setTimeout(() => {
+                        hint.style.color = '';
+                        hint.textContent = 'Cliquer sur l\'icône pour personnaliser · JPG PNG WEBP · max 128×128 px';
+                    }, 4000);
+                }
+            } finally {
+                e.target.value = '';
+            }
         };
 
         // Uptime

deploy/install.sh

@@ -112,10 +112,33 @@ ok "Répertoire créé"
 # ── 7. Écrire config.toml ─────────────────────────────────────────────────────
 echo "[3/5] Écriture de $CONFIG_FILE"
 
-# Ne pas écraser une config existante (upgrade)
+OVERWRITE_CONFIG="${OVERWRITE_CONFIG:-}"
+WRITE_CONFIG=true
+
 if [ -f "$CONFIG_FILE" ]; then
-    warn "config.toml déjà présent — conservé tel quel"
-else
+    if [ "${OVERWRITE_CONFIG}" = "true" ]; then
+        warn "OVERWRITE_CONFIG=true — config.toml sera écrasé"
+        WRITE_CONFIG=true
+    elif [ -t 0 ]; then
+        # Mode interactif (bash local, pas curl | bash)
+        echo ""
+        warn "Un config.toml existe déjà :"
+        echo "    $CONFIG_FILE"
+        printf "  Écraser la configuration existante ? [o/N] : "
+        read -r _ANS
+        if [[ "$_ANS" =~ ^[Oo]$ ]]; then
+            WRITE_CONFIG=true
+        else
+            ok "config.toml conservé"
+            WRITE_CONFIG=false
+        fi
+    else
+        warn "config.toml déjà présent — conservé (relancez avec OVERWRITE_CONFIG=true pour écraser)"
+        WRITE_CONFIG=false
+    fi
+fi
+
+if [ "$WRITE_CONFIG" = "true" ]; then
 cat > "$CONFIG_FILE" << TOML
 [server]
 ip = "$SERVER_IP"
@@ -165,6 +188,10 @@ TOML
     ok "config.toml créé"
 fi
 
+# S'assurer que le fichier est toujours lisible (cas d'un config existant en 640)
+chmod 644 "$CONFIG_FILE" 2>/dev/null || true
+chmod 755 "$CONFIG_DIR"
+
 # ── 8. Installer le fichier service ──────────────────────────────────────────
 echo "[4/5] Installation du service systemd"
 curl -fsSL -o "$SERVICE_FILE" "$SERVICE_URL"

deploy/nanometrics-agent.service

@@ -11,7 +11,7 @@ RestartSec=5
 
 DynamicUser=yes
 ConfigurationDirectory=nanometrics
-ConfigurationDirectoryMode=0750
+ConfigurationDirectoryMode=0755
 
 ProtectSystem=strict
 ProtectHome=read-only

deploy/release.sh

@@ -25,7 +25,9 @@ DESCRIPTION="${2:-Release $TAG}"
 ROOT="$(cd "$(dirname "$0")/.." && pwd)"
 CARGO_TOML="$ROOT/agent/Cargo.toml"
 
-# ── 1. Compiler pour toutes les cibles supportées ──────────────────────────
+mkdir -p "$ROOT/dist"
+
+# ── 1. Compiler l'agent pour toutes les cibles supportées ────────────────
 echo "=== Compilation de l'agent ==="
 TARGETS=("x86_64-unknown-linux-musl" "aarch64-unknown-linux-musl")
 LABELS=("linux-amd64" "linux-arm64")

server/Dockerfile

@@ -5,10 +5,9 @@ RUN go mod download
 COPY . .
 RUN CGO_ENABLED=0 go build -ldflags="-s -w" -o nanometrics-server .
 
-FROM alpine:3.19
-RUN apk add --no-cache ca-certificates
-WORKDIR /app
-COPY --from=builder /app/nanometrics-server .
+FROM scratch
+COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
+COPY --from=builder /app/nanometrics-server /nanometrics-server
 VOLUME /data
 EXPOSE 8080 9999/udp
-CMD ["./nanometrics-server"]
+CMD ["/nanometrics-server"]

server/db/db.go

@@ -128,6 +128,72 @@ func (d *DB) GetAgents() ([]models.Agent, error) {
 	return agents, nil
 }
 
+func (d *DB) GetLastMetrics(agentID string) (*models.AgentMetrics, error) {
+	var cpu, temperature *float64
+	var memUsed, memFree, memTotal, hddUsed, hddFree, hddTotal *int64
+	var uptime, netRX, netTX *int64
+	var smartPassed, smartTemp, smartRealloc, smartHours, smartWear *int64
+
+	// Chaque sous-requête prend la dernière valeur NON NULL de sa colonne.
+	// Nécessaire car les paquets rapides (2s) ne contiennent pas les métriques
+	// lentes (disque, smart) qui sont envoyées toutes les 60s.
+	err := d.conn.QueryRow(`
+		SELECT
+		  (SELECT cpu_percent  FROM metrics WHERE agent_id=? AND cpu_percent  IS NOT NULL ORDER BY ts DESC LIMIT 1),
+		  (SELECT memory_used  FROM metrics WHERE agent_id=? AND memory_used  IS NOT NULL ORDER BY ts DESC LIMIT 1),
+		  (SELECT memory_free  FROM metrics WHERE agent_id=? AND memory_free  IS NOT NULL ORDER BY ts DESC LIMIT 1),
+		  (SELECT memory_total FROM metrics WHERE agent_id=? AND memory_total IS NOT NULL ORDER BY ts DESC LIMIT 1),
+		  (SELECT hdd_used     FROM metrics WHERE agent_id=? AND hdd_used     IS NOT NULL ORDER BY ts DESC LIMIT 1),
+		  (SELECT hdd_free     FROM metrics WHERE agent_id=? AND hdd_free     IS NOT NULL ORDER BY ts DESC LIMIT 1),
+		  (SELECT hdd_total    FROM metrics WHERE agent_id=? AND hdd_total    IS NOT NULL ORDER BY ts DESC LIMIT 1),
+		  (SELECT uptime       FROM metrics WHERE agent_id=? AND uptime       IS NOT NULL ORDER BY ts DESC LIMIT 1),
+		  (SELECT network_rx   FROM metrics WHERE agent_id=? AND network_rx   IS NOT NULL ORDER BY ts DESC LIMIT 1),
+		  (SELECT network_tx   FROM metrics WHERE agent_id=? AND network_tx   IS NOT NULL ORDER BY ts DESC LIMIT 1),
+		  (SELECT temperature  FROM metrics WHERE agent_id=? AND temperature  IS NOT NULL ORDER BY ts DESC LIMIT 1),
+		  (SELECT smart_passed FROM metrics WHERE agent_id=? AND smart_passed IS NOT NULL ORDER BY ts DESC LIMIT 1),
+		  (SELECT smart_temp   FROM metrics WHERE agent_id=? AND smart_passed IS NOT NULL ORDER BY ts DESC LIMIT 1),
+		  (SELECT smart_realloc FROM metrics WHERE agent_id=? AND smart_passed IS NOT NULL ORDER BY ts DESC LIMIT 1),
+		  (SELECT smart_hours  FROM metrics WHERE agent_id=? AND smart_passed IS NOT NULL ORDER BY ts DESC LIMIT 1),
+		  (SELECT smart_wear   FROM metrics WHERE agent_id=? AND smart_passed IS NOT NULL ORDER BY ts DESC LIMIT 1)`,
+		agentID, agentID, agentID, agentID,
+		agentID, agentID, agentID,
+		agentID, agentID, agentID, agentID,
+		agentID, agentID, agentID, agentID, agentID).
+		Scan(&cpu, &memUsed, &memFree, &memTotal,
+			&hddUsed, &hddFree, &hddTotal,
+			&uptime, &netRX, &netTX, &temperature,
+			&smartPassed, &smartTemp, &smartRealloc, &smartHours, &smartWear)
+	if err == sql.ErrNoRows {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, err
+	}
+	m := &models.AgentMetrics{
+		CPUPercent:  cpu,
+		MemoryUsed:  memUsed,
+		MemoryFree:  memFree,
+		MemoryTotal: memTotal,
+		HDDUsed:     hddUsed,
+		HDDFree:     hddFree,
+		HDDTotal:    hddTotal,
+		Uptime:      uptime,
+		NetworkRX:   netRX,
+		NetworkTX:   netTX,
+		Temperature: temperature,
+	}
+	if smartPassed != nil {
+		m.Smart = &models.SmartMetrics{
+			Passed:             *smartPassed == 1,
+			Temperature:        smartTemp,
+			ReallocatedSectors: smartRealloc,
+			PowerOnHours:       smartHours,
+			WearLevel:          smartWear,
+		}
+	}
+	return m, nil
+}
+
 func (d *DB) GetMetricsHistory(agentID string, from, to int64) ([]map[string]interface{}, error) {
 	rows, err := d.conn.Query(`
 		SELECT ts, cpu_percent, memory_used, memory_total, hdd_used, hdd_total

server/docker-compose.yml

@@ -1,7 +1,8 @@
-version: '3.8'
 services:
   server:
-    build: .
+    build:
+      context: .
+      pull: false
     restart: unless-stopped
     environment:
       UDP_ADDR: "0.0.0.0:9999"
@@ -16,6 +17,7 @@ services:
 
   dashboard:
     image: nginx:alpine
+    pull_policy: if_not_present
     restart: unless-stopped
     volumes:
       - ./nginx/nginx.conf:/etc/nginx/conf.d/default.conf:ro

server/handlers/agents.go

@@ -15,6 +15,9 @@ func AgentsHandler(database *db.DB) http.HandlerFunc {
 			http.Error(w, err.Error(), 500)
 			return
 		}
+		for i := range agents {
+			agents[i].LastMetrics, _ = database.GetLastMetrics(agents[i].ID)
+		}
 		w.Header().Set("Content-Type", "application/json")
 		json.NewEncoder(w).Encode(agents)
 	}

server/handlers/icons.go

@@ -3,6 +3,7 @@ package handlers
 import (
 	"bytes"
 	"image"
+	_ "image/gif"
 	_ "image/jpeg"
 	"image/png"
 	"io"
@@ -11,6 +12,7 @@ import (
 
 	"github.com/disintegration/imaging"
 	"github.com/user/nanometrics/server/db"
+	_ "golang.org/x/image/webp"
 )
 
 const maxIconSize = 128

server/nginx/nginx.conf

@@ -2,6 +2,7 @@ server {
     listen 80;
     root /usr/share/nginx/html;
     index index.html;
+    client_max_body_size 10m;
 
     location /api/ {
         proxy_pass http://server:8080;