backend/routers/modem_dashboard.py

@@ -284,3 +284,146 @@ async def get_modem_diagnostics(modem_id: str, db: Session = Depends(get_db)):
         "carrier": None,
         "connection_type": None  # LTE, 5G, etc.
     }
+
+
+@router.get("/{modem_id}/pairable-devices")
+async def get_pairable_devices(
+    modem_id: str,
+    db: Session = Depends(get_db),
+    search: str = Query(None),
+    hide_paired: bool = Query(True)
+):
+    """
+    Get list of devices (seismographs and SLMs) that can be paired with this modem.
+    Used by the device picker modal in unit_detail.html.
+    """
+    # Check modem exists
+    modem = db.query(RosterUnit).filter_by(id=modem_id, device_type="modem").first()
+    if not modem:
+        return {"status": "error", "detail": f"Modem {modem_id} not found"}
+
+    # Query seismographs and SLMs
+    query = db.query(RosterUnit).filter(
+        RosterUnit.device_type.in_(["seismograph", "sound_level_meter"]),
+        RosterUnit.retired == False
+    )
+
+    # Filter by search term if provided
+    if search:
+        search_term = f"%{search}%"
+        query = query.filter(
+            (RosterUnit.id.ilike(search_term)) |
+            (RosterUnit.project_id.ilike(search_term)) |
+            (RosterUnit.location.ilike(search_term)) |
+            (RosterUnit.address.ilike(search_term)) |
+            (RosterUnit.note.ilike(search_term))
+        )
+
+    devices = query.order_by(
+        RosterUnit.deployed.desc(),
+        RosterUnit.device_type.asc(),
+        RosterUnit.id.asc()
+    ).all()
+
+    # Build device list
+    device_list = []
+    for device in devices:
+        # Skip already paired devices if hide_paired is True
+        is_paired_to_other = (
+            device.deployed_with_modem_id is not None and
+            device.deployed_with_modem_id != modem_id
+        )
+        is_paired_to_this = device.deployed_with_modem_id == modem_id
+
+        if hide_paired and is_paired_to_other:
+            continue
+
+        device_list.append({
+            "id": device.id,
+            "device_type": device.device_type,
+            "deployed": device.deployed,
+            "project_id": device.project_id,
+            "location": device.location or device.address,
+            "note": device.note,
+            "paired_modem_id": device.deployed_with_modem_id,
+            "is_paired_to_this": is_paired_to_this,
+            "is_paired_to_other": is_paired_to_other
+        })
+
+    return {"devices": device_list, "modem_id": modem_id}
+
+
+@router.post("/{modem_id}/pair")
+async def pair_device_to_modem(
+    modem_id: str,
+    db: Session = Depends(get_db),
+    device_id: str = Query(..., description="ID of the device to pair")
+):
+    """
+    Pair a device (seismograph or SLM) to this modem.
+    Updates the device's deployed_with_modem_id field.
+    """
+    # Check modem exists
+    modem = db.query(RosterUnit).filter_by(id=modem_id, device_type="modem").first()
+    if not modem:
+        return {"status": "error", "detail": f"Modem {modem_id} not found"}
+
+    # Find the device
+    device = db.query(RosterUnit).filter(
+        RosterUnit.id == device_id,
+        RosterUnit.device_type.in_(["seismograph", "sound_level_meter"]),
+        RosterUnit.retired == False
+    ).first()
+    if not device:
+        return {"status": "error", "detail": f"Device {device_id} not found"}
+
+    # Unpair any device currently paired to this modem
+    currently_paired = db.query(RosterUnit).filter(
+        RosterUnit.deployed_with_modem_id == modem_id
+    ).all()
+    for paired_device in currently_paired:
+        paired_device.deployed_with_modem_id = None
+
+    # Pair the new device
+    device.deployed_with_modem_id = modem_id
+    db.commit()
+
+    return {
+        "status": "success",
+        "modem_id": modem_id,
+        "device_id": device_id,
+        "message": f"Device {device_id} paired to modem {modem_id}"
+    }
+
+
+@router.post("/{modem_id}/unpair")
+async def unpair_device_from_modem(modem_id: str, db: Session = Depends(get_db)):
+    """
+    Unpair any device currently paired to this modem.
+    """
+    # Check modem exists
+    modem = db.query(RosterUnit).filter_by(id=modem_id, device_type="modem").first()
+    if not modem:
+        return {"status": "error", "detail": f"Modem {modem_id} not found"}
+
+    # Find and unpair device
+    device = db.query(RosterUnit).filter(
+        RosterUnit.deployed_with_modem_id == modem_id
+    ).first()
+
+    if device:
+        old_device_id = device.id
+        device.deployed_with_modem_id = None
+        db.commit()
+        return {
+            "status": "success",
+            "modem_id": modem_id,
+            "unpaired_device_id": old_device_id,
+            "message": f"Device {old_device_id} unpaired from modem {modem_id}"
+        }
+
+    return {
+        "status": "success",
+        "modem_id": modem_id,
+        "message": "No device was paired to this modem"
+    }

templates/partials/modem_paired_device.html

@@ -2,7 +2,7 @@
 {% if device %}
 <div class="flex items-center gap-4 p-4 bg-green-50 dark:bg-green-900/20 rounded-lg">
     <div class="bg-green-100 dark:bg-green-900/30 p-3 rounded-lg">
-        {% if device.device_type == "slm" %}
+        {% if device.device_type == "slm" or device.device_type == "sound_level_meter" %}
         <svg class="w-6 h-6 text-green-600 dark:text-green-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
             <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 19v-6a2 2 0 00-2-2H5a2 2 0 00-2 2v6a2 2 0 002 2h2a2 2 0 002-2zm0 0V9a2 2 0 012-2h2a2 2 0 012 2v10m-6 0a2 2 0 002 2h2a2 2 0 002-2m0 0V5a2 2 0 012-2h2a2 2 0 012 2v14a2 2 0 01-2 2h-2a2 2 0 01-2-2z"></path>
         </svg>
@@ -18,7 +18,7 @@
             {{ device.id }}
         </a>
         <div class="flex items-center gap-2 mt-1 text-sm text-gray-600 dark:text-gray-400">
-            <span class="capitalize">{{ device.device_type }}</span>
+            <span class="capitalize">{{ device.device_type | replace("_", " ") }}</span>
             {% if device.project_id %}
                 <span class="text-gray-400">|</span>
                 <span>{{ device.project_id }}</span>
@@ -30,12 +30,18 @@
             {% endif %}
         </div>
     </div>
+    <div class="flex items-center gap-2">
+        <button onclick="openModemPairDeviceModal()"
+                class="px-3 py-1.5 text-sm bg-gray-100 hover:bg-gray-200 dark:bg-gray-700 dark:hover:bg-gray-600 text-gray-700 dark:text-gray-300 rounded-lg transition-colors">
+            Edit Pairing
+        </button>
         <a href="/unit/{{ device.id }}" class="text-gray-400 hover:text-seismo-orange transition-colors">
             <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                 <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 5l7 7-7 7"></path>
             </svg>
         </a>
     </div>
+</div>
 {% else %}
 <div class="flex items-center gap-4 p-4 bg-gray-50 dark:bg-gray-800 rounded-lg">
     <div class="bg-gray-200 dark:bg-gray-700 p-3 rounded-lg">
@@ -47,5 +53,12 @@
         <p class="text-gray-600 dark:text-gray-400">No device currently paired</p>
         <p class="text-sm text-gray-500 dark:text-gray-500">This modem is available for assignment</p>
     </div>
+    <button onclick="openModemPairDeviceModal()"
+            class="px-4 py-2 text-sm bg-seismo-orange hover:bg-orange-600 text-white rounded-lg transition-colors flex items-center gap-2">
+        <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M13.828 10.172a4 4 0 00-5.656 0l-4 4a4 4 0 105.656 5.656l1.102-1.101m-.758-4.899a4 4 0 005.656 0l4-4a4 4 0 00-5.656-5.656l-1.1 1.1"></path>
+        </svg>
+        Pair Device
+    </button>
 </div>
 {% endif %}

templates/unit_detail.html

@@ -1571,6 +1571,242 @@ function clearPairing(deviceType) {
 
     closePairDeviceModal();
 }
+
+// ===== Modem Pair Device Modal Functions (for modems to pick a device) =====
+let modemPairDevices = []; // Cache loaded devices
+let modemHasCurrentPairing = false;
+
+function openModemPairDeviceModal() {
+    const modal = document.getElementById('modemPairDeviceModal');
+    const searchInput = document.getElementById('modemPairDeviceSearch');
+
+    if (!modal) return;
+
+    modal.classList.remove('hidden');
+    if (searchInput) {
+        searchInput.value = '';
+        searchInput.focus();
+    }
+
+    // Reset checkboxes
+    document.getElementById('modemPairHidePaired').checked = true;
+    document.getElementById('modemPairShowSeismo').checked = true;
+    document.getElementById('modemPairShowSLM').checked = true;
+
+    // Load available devices
+    loadPairableDevices();
+}
+
+function closeModemPairDeviceModal() {
+    const modal = document.getElementById('modemPairDeviceModal');
+    if (modal) modal.classList.add('hidden');
+    modemPairDevices = [];
+}
+
+async function loadPairableDevices() {
+    const listContainer = document.getElementById('modemPairDeviceList');
+    listContainer.innerHTML = '<div class="text-center py-8"><div class="animate-spin inline-block w-6 h-6 border-2 border-seismo-orange border-t-transparent rounded-full"></div><p class="mt-2 text-sm text-gray-500">Loading devices...</p></div>';
+
+    try {
+        const response = await fetch(`/api/modem-dashboard/${unitId}/pairable-devices?hide_paired=false`);
+        if (!response.ok) throw new Error('Failed to load devices');
+
+        const data = await response.json();
+        modemPairDevices = data.devices || [];
+
+        // Check if modem has a current pairing
+        modemHasCurrentPairing = modemPairDevices.some(d => d.is_paired_to_this);
+        const unpairBtn = document.getElementById('modemUnpairBtn');
+        if (unpairBtn) {
+            unpairBtn.classList.toggle('hidden', !modemHasCurrentPairing);
+        }
+
+        if (modemPairDevices.length === 0) {
+            listContainer.innerHTML = '<p class="text-center py-8 text-gray-500">No devices found in roster</p>';
+            return;
+        }
+
+        renderModemPairDeviceList();
+    } catch (error) {
+        console.error('Failed to load pairable devices:', error);
+        listContainer.innerHTML = '<p class="text-center py-8 text-red-500">Failed to load devices</p>';
+    }
+}
+
+function filterModemPairDeviceList() {
+    renderModemPairDeviceList();
+}
+
+function renderModemPairDeviceList() {
+    const listContainer = document.getElementById('modemPairDeviceList');
+    const searchInput = document.getElementById('modemPairDeviceSearch');
+    const hidePairedCheckbox = document.getElementById('modemPairHidePaired');
+    const showSeismoCheckbox = document.getElementById('modemPairShowSeismo');
+    const showSLMCheckbox = document.getElementById('modemPairShowSLM');
+
+    const searchTerm = searchInput?.value?.toLowerCase() || '';
+    const hidePaired = hidePairedCheckbox?.checked ?? true;
+    const showSeismo = showSeismoCheckbox?.checked ?? true;
+    const showSLM = showSLMCheckbox?.checked ?? true;
+
+    // Filter devices
+    let filteredDevices = modemPairDevices.filter(device => {
+        // Filter by device type
+        if (device.device_type === 'seismograph' && !showSeismo) return false;
+        if (device.device_type === 'sound_level_meter' && !showSLM) return false;
+
+        // Hide devices paired to OTHER modems (but show unpaired and paired-to-this)
+        if (hidePaired && device.is_paired_to_other) return false;
+
+        // Search filter
+        if (searchTerm) {
+            const searchFields = [
+                device.id,
+                device.project_id || '',
+                device.location || '',
+                device.note || ''
+            ].join(' ').toLowerCase();
+            if (!searchFields.includes(searchTerm)) return false;
+        }
+
+        return true;
+    });
+
+    if (filteredDevices.length === 0) {
+        listContainer.innerHTML = '<p class="text-center py-8 text-gray-500">No devices match your criteria</p>';
+        return;
+    }
+
+    // Build device list HTML
+    let html = '<div class="divide-y divide-gray-200 dark:divide-gray-700">';
+    for (const device of filteredDevices) {
+        const deviceTypeLabel = device.device_type === 'sound_level_meter' ? 'SLM' : 'Seismograph';
+        const deviceTypeClass = device.device_type === 'sound_level_meter'
+            ? 'bg-purple-100 dark:bg-purple-900/30 text-purple-800 dark:text-purple-300'
+            : 'bg-blue-100 dark:bg-blue-900/30 text-blue-800 dark:text-blue-300';
+
+        const deployedBadge = device.deployed
+            ? '<span class="px-2 py-0.5 bg-green-100 dark:bg-green-900/30 text-green-800 dark:text-green-300 text-xs rounded">Deployed</span>'
+            : '<span class="px-2 py-0.5 bg-amber-100 dark:bg-amber-900/30 text-amber-800 dark:text-amber-300 text-xs rounded">Benched</span>';
+
+        let pairingBadge = '';
+        if (device.is_paired_to_this) {
+            pairingBadge = '<span class="px-2 py-0.5 bg-seismo-orange/20 text-seismo-orange text-xs rounded font-medium">Current</span>';
+        } else if (device.is_paired_to_other) {
+            pairingBadge = `<span class="px-2 py-0.5 bg-gray-200 dark:bg-gray-600 text-gray-600 dark:text-gray-300 text-xs rounded">Paired: ${device.paired_modem_id}</span>`;
+        }
+
+        const isCurrentlyPaired = device.is_paired_to_this;
+
+        html += `
+            <div class="px-6 py-3 hover:bg-gray-50 dark:hover:bg-slate-700 cursor-pointer transition-colors ${isCurrentlyPaired ? 'bg-seismo-orange/5' : ''}"
+                 onclick="selectDeviceForModem('${device.id}')">
+                <div class="flex items-center justify-between">
+                    <div class="flex-1 min-w-0">
+                        <div class="flex items-center gap-2">
+                            <span class="font-medium text-gray-900 dark:text-white">${device.id}</span>
+                            <span class="px-2 py-0.5 ${deviceTypeClass} text-xs rounded">${deviceTypeLabel}</span>
+                        </div>
+                        ${device.project_id ? `<div class="text-sm text-gray-500 dark:text-gray-400">${device.project_id}</div>` : ''}
+                        ${device.location ? `<div class="text-sm text-gray-500 dark:text-gray-400 truncate">${device.location}</div>` : ''}
+                    </div>
+                    <div class="flex items-center gap-2 ml-4">
+                        ${deployedBadge}
+                        ${pairingBadge}
+                    </div>
+                </div>
+            </div>
+        `;
+    }
+    html += '</div>';
+
+    listContainer.innerHTML = html;
+}
+
+async function selectDeviceForModem(deviceId) {
+    const listContainer = document.getElementById('modemPairDeviceList');
+
+    // Show loading state
+    listContainer.innerHTML = '<div class="text-center py-8"><div class="animate-spin inline-block w-6 h-6 border-2 border-seismo-orange border-t-transparent rounded-full"></div><p class="mt-2 text-sm text-gray-500">Pairing device...</p></div>';
+
+    try {
+        const response = await fetch(`/api/modem-dashboard/${unitId}/pair?device_id=${encodeURIComponent(deviceId)}`, {
+            method: 'POST'
+        });
+
+        const result = await response.json();
+
+        if (result.status === 'success') {
+            closeModemPairDeviceModal();
+            // Reload the paired device section
+            loadPairedDevice();
+            // Show success message (optional toast)
+            showToast(`Paired with ${deviceId}`, 'success');
+        } else {
+            listContainer.innerHTML = `<p class="text-center py-8 text-red-500">${result.detail || 'Failed to pair device'}</p>`;
+        }
+    } catch (error) {
+        console.error('Failed to pair device:', error);
+        listContainer.innerHTML = '<p class="text-center py-8 text-red-500">Failed to pair device</p>';
+    }
+}
+
+async function unpairDeviceFromModem() {
+    const listContainer = document.getElementById('modemPairDeviceList');
+
+    // Show loading state
+    listContainer.innerHTML = '<div class="text-center py-8"><div class="animate-spin inline-block w-6 h-6 border-2 border-seismo-orange border-t-transparent rounded-full"></div><p class="mt-2 text-sm text-gray-500">Unpairing device...</p></div>';
+
+    try {
+        const response = await fetch(`/api/modem-dashboard/${unitId}/unpair`, {
+            method: 'POST'
+        });
+
+        const result = await response.json();
+
+        if (result.status === 'success') {
+            closeModemPairDeviceModal();
+            // Reload the paired device section
+            loadPairedDevice();
+            // Show success message
+            if (result.unpaired_device_id) {
+                showToast(`Unpaired ${result.unpaired_device_id}`, 'success');
+            } else {
+                showToast('No device was paired', 'info');
+            }
+        } else {
+            listContainer.innerHTML = `<p class="text-center py-8 text-red-500">${result.detail || 'Failed to unpair device'}</p>`;
+        }
+    } catch (error) {
+        console.error('Failed to unpair device:', error);
+        listContainer.innerHTML = '<p class="text-center py-8 text-red-500">Failed to unpair device</p>';
+    }
+}
+
+// Simple toast function (if not already defined)
+function showToast(message, type = 'info') {
+    // Check if there's already a toast container
+    let toastContainer = document.getElementById('toast-container');
+    if (!toastContainer) {
+        toastContainer = document.createElement('div');
+        toastContainer.id = 'toast-container';
+        toastContainer.className = 'fixed bottom-4 right-4 z-50 space-y-2';
+        document.body.appendChild(toastContainer);
+    }
+
+    const toast = document.createElement('div');
+    const bgColor = type === 'success' ? 'bg-green-500' : type === 'error' ? 'bg-red-500' : 'bg-gray-700';
+    toast.className = `${bgColor} text-white px-4 py-2 rounded-lg shadow-lg transform transition-all duration-300 translate-x-0`;
+    toast.textContent = message;
+
+    toastContainer.appendChild(toast);
+
+    // Auto-remove after 3 seconds
+    setTimeout(() => {
+        toast.classList.add('opacity-0', 'translate-x-full');
+        setTimeout(() => toast.remove(), 300);
+    }, 3000);
+}
 </script>
 
 <!-- Pair Device Modal -->
@@ -1637,4 +1873,81 @@ function clearPairing(deviceType) {
 <!-- Include Project Create Modal for inline project creation -->
 {% include "partials/project_create_modal.html" %}
 
+<!-- Modem Pair Device Modal (for modems to pick a device) -->
+<div id="modemPairDeviceModal" class="hidden fixed inset-0 z-50 overflow-y-auto">
+    <div class="flex items-center justify-center min-h-screen px-4">
+        <!-- Backdrop -->
+        <div class="fixed inset-0 bg-black/50" onclick="closeModemPairDeviceModal()"></div>
+
+        <!-- Modal Content -->
+        <div class="relative bg-white dark:bg-slate-800 rounded-xl shadow-xl max-w-lg w-full max-h-[90vh] flex flex-col">
+            <!-- Header -->
+            <div class="flex items-center justify-between px-6 py-4 border-b border-gray-200 dark:border-gray-700">
+                <div>
+                    <h3 class="text-lg font-semibold text-gray-900 dark:text-white">Pair Device to Modem</h3>
+                    <p class="text-sm text-gray-500 dark:text-gray-400">Select a seismograph or SLM to pair</p>
+                </div>
+                <button onclick="closeModemPairDeviceModal()" class="text-gray-400 hover:text-gray-600 dark:hover:text-gray-300">
+                    <svg class="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12"></path>
+                    </svg>
+                </button>
+            </div>
+
+            <!-- Search and Filters -->
+            <div class="px-6 py-4 border-b border-gray-200 dark:border-gray-700 space-y-3">
+                <input type="text"
+                       placeholder="Search by ID, project, location..."
+                       class="w-full px-4 py-2 border border-gray-300 dark:border-gray-600 rounded-lg bg-white dark:bg-slate-700 text-gray-900 dark:text-white focus:ring-2 focus:ring-seismo-orange focus:border-transparent"
+                       id="modemPairDeviceSearch"
+                       autocomplete="off"
+                       oninput="filterModemPairDeviceList()">
+                <div class="flex items-center gap-4">
+                    <label class="flex items-center gap-2 text-sm text-gray-600 dark:text-gray-400 cursor-pointer">
+                        <input type="checkbox"
+                               id="modemPairHidePaired"
+                               onchange="filterModemPairDeviceList()"
+                               checked
+                               class="rounded border-gray-300 dark:border-gray-600 text-seismo-orange focus:ring-seismo-orange">
+                        Hide paired devices
+                    </label>
+                    <label class="flex items-center gap-2 text-sm text-gray-600 dark:text-gray-400 cursor-pointer">
+                        <input type="checkbox"
+                               id="modemPairShowSeismo"
+                               onchange="filterModemPairDeviceList()"
+                               checked
+                               class="rounded border-gray-300 dark:border-gray-600 text-seismo-orange focus:ring-seismo-orange">
+                        Seismographs
+                    </label>
+                    <label class="flex items-center gap-2 text-sm text-gray-600 dark:text-gray-400 cursor-pointer">
+                        <input type="checkbox"
+                               id="modemPairShowSLM"
+                               onchange="filterModemPairDeviceList()"
+                               checked
+                               class="rounded border-gray-300 dark:border-gray-600 text-seismo-orange focus:ring-seismo-orange">
+                        SLMs
+                    </label>
+                </div>
+            </div>
+
+            <!-- Device List -->
+            <div id="modemPairDeviceList" class="flex-1 overflow-y-auto max-h-80">
+                <!-- Populated by JavaScript -->
+            </div>
+
+            <!-- Footer -->
+            <div class="px-6 py-4 border-t border-gray-200 dark:border-gray-700 bg-gray-50 dark:bg-slate-900 flex gap-3">
+                <button onclick="unpairDeviceFromModem()"
+                        id="modemUnpairBtn"
+                        class="hidden px-4 py-2 bg-red-100 hover:bg-red-200 dark:bg-red-900/30 dark:hover:bg-red-900/50 text-red-700 dark:text-red-300 rounded-lg transition-colors">
+                    Unpair Current
+                </button>
+                <button onclick="closeModemPairDeviceModal()" class="flex-1 px-4 py-2 bg-gray-200 dark:bg-gray-700 hover:bg-gray-300 dark:hover:bg-gray-600 text-gray-700 dark:text-gray-300 rounded-lg transition-colors">
+                    Cancel
+                </button>
+            </div>
+        </div>
+    </div>
+</div>
+
 {% endblock %}