MVP

process_recovery_response.js

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+// ===== PROCESS RECOVERY RESPONSE =====
+// This function processes the database response from startup recovery query
+// Connect this to the output of the MySQL node that executed the startup query
+
+if (!msg.payload || msg.payload.length === 0) {
+    // No previous session found - start fresh
+    node.warn("No previous session found. Starting fresh.");
+    msg._recoveryStatus = "no-session";
+    msg.payload = {
+        type: "info",
+        message: "No previous session to restore. System ready for new work orders."
+    };
+    return [null, msg];  // Output 2: info message to dashboard
+}
+
+const sessionData = msg.payload[0];
+const now = Date.now();
+const timeSinceLastUpdate = now - sessionData.last_update_time;
+const hoursElapsed = timeSinceLastUpdate / (1000 * 60 * 60);
+
+// If last update was more than 24 hours ago, consider it stale
+if (hoursElapsed > 24) {
+    node.warn(`Previous session is stale (${hoursElapsed.toFixed(1)} hours old). Starting fresh.`);
+    msg._recoveryStatus = "session-stale";
+    msg.payload = {
+        type: "warning",
+        message: `Previous session found but is ${hoursElapsed.toFixed(1)} hours old. Starting fresh.`
+    };
+
+    // Deactivate stale session
+    const deactivateMsg = {
+        topic: `UPDATE session_state SET is_active = 0 WHERE session_id = '${sessionData.session_id}';`,
+        _mode: "deactivate-stale"
+    };
+
+    return [deactivateMsg, msg];  // Output 1: DB query, Output 2: info message
+}
+
+// Session is recent - prepare recovery prompt
+msg._recoveryStatus = "session-found";
+msg.sessionData = sessionData;
+
+const lastUpdateFormatted = new Date(sessionData.last_update_time).toLocaleString();
+const operatingHours = (sessionData.operating_time / 3600).toFixed(2);
+
+msg.payload = {
+    type: "recovery-prompt",
+    title: "Previous Session Found",
+    message: `A previous production session was found from ${hoursElapsed.toFixed(1)} hours ago (${lastUpdateFormatted})`,
+    details: {
+        workOrderId: sessionData.active_work_order_id || "None",
+        cyclesCompleted: sessionData.cycle_count,
+        operatingTime: operatingHours + " hours",
+        trackingWas: sessionData.tracking_enabled ? "RUNNING" : "STOPPED",
+        lastUpdate: lastUpdateFormatted
+    },
+    buttons: [
+        { label: "Restore Session", action: "restore-session", value: sessionData },
+        { label: "Start Fresh", action: "start-fresh", value: sessionData.session_id }
+    ]
+};
+
+// Output 2: Send prompt to dashboard for user decision
+return [null, msg];