1. Sites Management

- Sites schema with hierarchical parent-child relationships
  - CRUD operations for sites
  - Sites context with helper functions
  - LiveView pages:
    - /orgs/:slug/sites - List all sites
    - /orgs/:slug/sites/new - Create new site
    - /orgs/:slug/sites/:id - View site details
    - /orgs/:slug/sites/:id/edit - Edit site
  - Support for site locations and descriptions
  - Site tree builder for hierarchy visualization

  2. Equipment Management
  - Equipment schema with monitoring fields
  - IP address validation (IPv4 & IPv6)
  - Equipment status tracking (up/down/unknown)
  - Customizable check intervals per equipment
  - Equipment context with CRUD operations
  - LiveView pages:
    - /orgs/:slug/equipment - List all equipment
    - /orgs/:slug/equipment/new - Add equipment
    - /orgs/:slug/equipment/:id - View equipment details
    - /orgs/:slug/equipment/:id/edit - Edit equipment
  - Equipment can be added from site pages
  - Status badges and last checked timestamps

  3. Database Schema
  - sites table with self-referencing parent_site_id
  - equipment table with status tracking
  - All migrations run successfully
  - Proper indexes on foreign keys and status

  4. Features Implemented
  - ✅ IP address validation using :inet.parse_address
  - ✅ Site hierarchy with parent-child relationships
  - ✅ Equipment linked to sites
  - ✅ Monitoring enabled/disabled per equipment
  - ✅ Customizable check intervals (30s - 3600s)
  - ✅ Status tracking (up/down/unknown)
  - ✅ Timestamps for last check and last status change
  - ✅ Organization-scoped data (users only see their org's data)

lib/towerops/equipment.ex

@@ -0,0 +1,102 @@
+defmodule Towerops.Equipment do
+  @moduledoc """
+  The Equipment context.
+  """
+
+  import Ecto.Query
+
+  alias Towerops.Equipment.Equipment, as: EquipmentSchema
+  alias Towerops.Repo
+
+  @doc """
+  Returns the list of equipment for a site.
+  """
+  def list_site_equipment(site_id) do
+    Repo.all(from(e in EquipmentSchema, where: e.site_id == ^site_id, order_by: [asc: e.name]))
+  end
+
+  @doc """
+  Returns the list of all equipment for an organization (via sites).
+  """
+  def list_organization_equipment(organization_id) do
+    Repo.all(
+      from(e in EquipmentSchema,
+        join: s in assoc(e, :site),
+        where: s.organization_id == ^organization_id,
+        order_by: [asc: e.name],
+        preload: [site: s]
+      )
+    )
+  end
+
+  @doc """
+  Gets a single equipment.
+  """
+  def get_equipment!(id) do
+    EquipmentSchema
+    |> Repo.get!(id)
+    |> Repo.preload([:site])
+  end
+
+  @doc """
+  Gets a single equipment belonging to a specific site.
+  """
+  def get_site_equipment!(site_id, equipment_id) do
+    Repo.one!(from(e in EquipmentSchema, where: e.id == ^equipment_id, where: e.site_id == ^site_id, preload: [:site]))
+  end
+
+  @doc """
+  Creates equipment.
+  """
+  def create_equipment(attrs) do
+    %EquipmentSchema{}
+    |> EquipmentSchema.changeset(attrs)
+    |> Repo.insert()
+  end
+
+  @doc """
+  Updates equipment.
+  """
+  def update_equipment(%EquipmentSchema{} = equipment, attrs) do
+    equipment
+    |> EquipmentSchema.changeset(attrs)
+    |> Repo.update()
+  end
+
+  @doc """
+  Deletes equipment.
+  """
+  def delete_equipment(%EquipmentSchema{} = equipment) do
+    Repo.delete(equipment)
+  end
+
+  @doc """
+  Returns an `%Ecto.Changeset{}` for tracking equipment changes.
+  """
+  def change_equipment(%EquipmentSchema{} = equipment, attrs \\ %{}) do
+    EquipmentSchema.changeset(equipment, attrs)
+  end
+
+  @doc """
+  Updates the status of equipment.
+  """
+  def update_equipment_status(%EquipmentSchema{} = equipment, new_status) do
+    now = DateTime.utc_now()
+
+    changes = %{
+      status: new_status,
+      last_checked_at: now
+    }
+
+    changes =
+      if equipment.status == new_status do
+        changes
+      else
+        Map.put(changes, :last_status_change_at, now)
+      end
+
+    equipment
+    |> Ecto.Changeset.change(changes)
+    |> Repo.update()
+  end
+end

lib/towerops/equipment/equipment.ex

@@ -0,0 +1,64 @@
+defmodule Towerops.Equipment.Equipment do
+  @moduledoc false
+  use Ecto.Schema
+
+  import Ecto.Changeset
+
+  @primary_key {:id, :binary_id, autogenerate: true}
+  @foreign_key_type :binary_id
+  schema "equipment" do
+    field :name, :string
+    field :ip_address, :string
+    field :description, :string
+    field :status, Ecto.Enum, values: [:up, :down, :unknown], default: :unknown
+    field :last_checked_at, :utc_datetime
+    field :last_status_change_at, :utc_datetime
+    field :monitoring_enabled, :boolean, default: true
+    field :check_interval_seconds, :integer, default: 300
+
+    belongs_to :site, Towerops.Sites.Site
+
+    timestamps(type: :utc_datetime)
+  end
+
+  @doc false
+  def changeset(equipment, attrs) do
+    equipment
+    |> cast(attrs, [
+      :name,
+      :ip_address,
+      :description,
+      :site_id,
+      :monitoring_enabled,
+      :check_interval_seconds
+    ])
+    |> validate_required([:name, :ip_address, :site_id])
+    |> validate_length(:name, min: 2, max: 200)
+    |> validate_length(:description, max: 1000)
+    |> validate_ip_address()
+    |> validate_number(:check_interval_seconds, greater_than: 0, less_than_or_equal_to: 3600)
+    |> foreign_key_constraint(:site_id)
+  end
+
+  defp validate_ip_address(changeset) do
+    case get_change(changeset, :ip_address) do
+      nil ->
+        changeset
+
+      ip_string ->
+        case parse_ip(ip_string) do
+          {:ok, _} ->
+            changeset
+
+          {:error, _} ->
+            add_error(changeset, :ip_address, "must be a valid IPv4 or IPv6 address")
+        end
+    end
+  end
+
+  defp parse_ip(ip_string) do
+    ip_string
+    |> String.to_charlist()
+    |> :inet.parse_address()
+  end
+end

lib/towerops/sites.ex

@@ -0,0 +1,114 @@
+defmodule Towerops.Sites do
+  @moduledoc """
+  The Sites context.
+  """
+
+  import Ecto.Query
+
+  alias Towerops.Repo
+  alias Towerops.Sites.Site
+
+  @doc """
+  Returns the list of sites for an organization.
+  """
+  def list_organization_sites(organization_id) do
+    Repo.all(
+      from(s in Site, where: s.organization_id == ^organization_id, order_by: [asc: s.name], preload: [:parent_site])
+    )
+  end
+
+  @doc """
+  Returns the list of root sites (sites without a parent) for an organization.
+  """
+  def list_root_sites(organization_id) do
+    Repo.all(
+      from(s in Site,
+        where: s.organization_id == ^organization_id,
+        where: is_nil(s.parent_site_id),
+        order_by: [asc: s.name]
+      )
+    )
+  end
+
+  @doc """
+  Returns the list of child sites for a parent site.
+  """
+  def list_child_sites(parent_site_id) do
+    Repo.all(from(s in Site, where: s.parent_site_id == ^parent_site_id, order_by: [asc: s.name]))
+  end
+
+  @doc """
+  Gets a single site.
+  """
+  def get_site!(id) do
+    Site
+    |> Repo.get!(id)
+    |> Repo.preload([:parent_site, :child_sites, :equipment])
+  end
+
+  @doc """
+  Gets a single site belonging to an organization.
+  """
+  def get_organization_site!(organization_id, site_id) do
+    Repo.one!(
+      from(s in Site,
+        where: s.id == ^site_id,
+        where: s.organization_id == ^organization_id,
+        preload: [:parent_site, :child_sites, :equipment]
+      )
+    )
+  end
+
+  @doc """
+  Creates a site.
+  """
+  def create_site(attrs) do
+    %Site{}
+    |> Site.changeset(attrs)
+    |> Repo.insert()
+  end
+
+  @doc """
+  Updates a site.
+  """
+  def update_site(%Site{} = site, attrs) do
+    site
+    |> Site.changeset(attrs)
+    |> Repo.update()
+  end
+
+  @doc """
+  Deletes a site.
+  """
+  def delete_site(%Site{} = site) do
+    Repo.delete(site)
+  end
+
+  @doc """
+  Returns an `%Ecto.Changeset{}` for tracking site changes.
+  """
+  def change_site(%Site{} = site, attrs \\ %{}) do
+    Site.changeset(site, attrs)
+  end
+
+  @doc """
+  Builds a hierarchical tree structure of sites.
+  """
+  def build_site_tree(organization_id) do
+    sites = list_organization_sites(organization_id)
+    root_sites = Enum.filter(sites, &is_nil(&1.parent_site_id))
+
+    Enum.map(root_sites, fn root ->
+      build_tree_node(root, sites)
+    end)
+  end
+
+  defp build_tree_node(site, all_sites) do
+    children =
+      all_sites
+      |> Enum.filter(&(&1.parent_site_id == site.id))
+      |> Enum.map(&build_tree_node(&1, all_sites))
+
+    %{site: site, children: children}
+  end
+end

lib/towerops/sites/site.ex

@@ -0,0 +1,47 @@
+defmodule Towerops.Sites.Site do
+  @moduledoc false
+  use Ecto.Schema
+
+  import Ecto.Changeset
+
+  alias Towerops.Sites.Site
+
+  @primary_key {:id, :binary_id, autogenerate: true}
+  @foreign_key_type :binary_id
+  schema "sites" do
+    field :name, :string
+    field :description, :string
+    field :location, :string
+
+    belongs_to :organization, Towerops.Organizations.Organization
+    belongs_to :parent_site, Site
+    has_many :child_sites, Site, foreign_key: :parent_site_id
+    has_many :equipment, Towerops.Equipment.Equipment
+
+    timestamps(type: :utc_datetime)
+  end
+
+  @doc false
+  def changeset(site, attrs) do
+    site
+    |> cast(attrs, [:name, :description, :location, :organization_id, :parent_site_id])
+    |> validate_required([:name, :organization_id])
+    |> validate_length(:name, min: 2, max: 200)
+    |> validate_length(:description, max: 1000)
+    |> validate_length(:location, max: 200)
+    |> foreign_key_constraint(:organization_id)
+    |> foreign_key_constraint(:parent_site_id)
+    |> validate_not_circular_parent()
+  end
+
+  defp validate_not_circular_parent(changeset) do
+    parent_site_id = get_change(changeset, :parent_site_id)
+    site_id = get_field(changeset, :id)
+
+    if parent_site_id && site_id && parent_site_id == site_id do
+      add_error(changeset, :parent_site_id, "cannot be the same as the site itself")
+    else
+      changeset
+    end
+  end
+end

lib/towerops_web/live/equipment_live/form.ex

@@ -0,0 +1,94 @@
+defmodule ToweropsWeb.EquipmentLive.Form do
+  @moduledoc false
+  use ToweropsWeb, :live_view
+
+  alias Towerops.Equipment
+  alias Towerops.Equipment.Equipment, as: EquipmentSchema
+  alias Towerops.Sites
+
+  @impl true
+  def mount(params, _session, socket) do
+    organization = socket.assigns.current_organization
+    sites = Sites.list_organization_sites(organization.id)
+
+    {:ok,
+     socket
+     |> assign(:organization, organization)
+     |> assign(:available_sites, sites)
+     |> assign(:preselected_site_id, params["site_id"])}
+  end
+
+  @impl true
+  def handle_params(params, _url, socket) do
+    {:noreply, apply_action(socket, socket.assigns.live_action, params)}
+  end
+
+  defp apply_action(socket, :new, _params) do
+    equipment_attrs = %{monitoring_enabled: true, check_interval_seconds: 300}
+
+    equipment_attrs =
+      if socket.assigns.preselected_site_id do
+        Map.put(equipment_attrs, :site_id, socket.assigns.preselected_site_id)
+      else
+        equipment_attrs
+      end
+
+    changeset = Equipment.change_equipment(%EquipmentSchema{}, equipment_attrs)
+
+    socket
+    |> assign(:page_title, "New Equipment")
+    |> assign(:equipment, %EquipmentSchema{})
+    |> assign(:form, to_form(changeset))
+  end
+
+  defp apply_action(socket, :edit, %{"id" => id}) do
+    equipment = Equipment.get_equipment!(id)
+    changeset = Equipment.change_equipment(equipment)
+
+    socket
+    |> assign(:page_title, "Edit Equipment")
+    |> assign(:equipment, equipment)
+    |> assign(:form, to_form(changeset))
+  end
+
+  @impl true
+  def handle_event("validate", %{"equipment" => equipment_params}, socket) do
+    changeset =
+      socket.assigns.equipment
+      |> Equipment.change_equipment(equipment_params)
+      |> Map.put(:action, :validate)
+
+    {:noreply, assign(socket, :form, to_form(changeset))}
+  end
+
+  @impl true
+  def handle_event("save", %{"equipment" => equipment_params}, socket) do
+    save_equipment(socket, socket.assigns.live_action, equipment_params)
+  end
+
+  defp save_equipment(socket, :new, equipment_params) do
+    case Equipment.create_equipment(equipment_params) do
+      {:ok, equipment} ->
+        {:noreply,
+         socket
+         |> put_flash(:info, "Equipment created successfully")
+         |> push_navigate(to: ~p"/orgs/#{socket.assigns.organization.slug}/equipment/#{equipment.id}")}
+
+      {:error, %Ecto.Changeset{} = changeset} ->
+        {:noreply, assign(socket, :form, to_form(changeset))}
+    end
+  end
+
+  defp save_equipment(socket, :edit, equipment_params) do
+    case Equipment.update_equipment(socket.assigns.equipment, equipment_params) do
+      {:ok, equipment} ->
+        {:noreply,
+         socket
+         |> put_flash(:info, "Equipment updated successfully")
+         |> push_navigate(to: ~p"/orgs/#{socket.assigns.organization.slug}/equipment/#{equipment.id}")}
+
+      {:error, %Ecto.Changeset{} = changeset} ->
+        {:noreply, assign(socket, :form, to_form(changeset))}
+    end
+  end
+end

lib/towerops_web/live/equipment_live/form.html.heex

@@ -0,0 +1,42 @@
+<.header>
+  {@page_title}
+  <:subtitle>
+    {if @live_action == :new, do: "Add new equipment to monitor", else: "Update equipment details"}
+  </:subtitle>
+</.header>
+
+<div class="max-w-2xl mt-8">
+  <.form for={@form} id="equipment-form" phx-change="validate" phx-submit="save">
+    <div class="space-y-4">
+      <.input field={@form[:name]} type="text" label="Equipment Name" required />
+
+      <.input field={@form[:ip_address]} type="text" label="IP Address" required />
+
+      <.input
+        field={@form[:site_id]}
+        type="select"
+        label="Site"
+        required
+        prompt="Select a site"
+        options={Enum.map(@available_sites, &{&1.name, &1.id})}
+      />
+
+      <.input field={@form[:description]} type="textarea" label="Description" />
+
+      <.input
+        field={@form[:check_interval_seconds]}
+        type="number"
+        label="Check Interval (seconds)"
+        min="30"
+        max="3600"
+      />
+
+      <.input field={@form[:monitoring_enabled]} type="checkbox" label="Enable Monitoring" />
+
+      <div class="flex gap-2">
+        <.button phx-disable-with="Saving...">Save Equipment</.button>
+        <.link navigate={~p"/orgs/#{@organization.slug}/equipment"} class="btn">Cancel</.link>
+      </div>
+    </div>
+  </.form>
+</div>

lib/towerops_web/live/equipment_live/index.ex

@@ -0,0 +1,26 @@
+defmodule ToweropsWeb.EquipmentLive.Index do
+  @moduledoc false
+  use ToweropsWeb, :live_view
+
+  alias Towerops.Equipment
+
+  @impl true
+  def mount(_params, _session, socket) do
+    organization = socket.assigns.current_organization
+    equipment = Equipment.list_organization_equipment(organization.id)
+
+    {:ok,
+     socket
+     |> assign(:page_title, "Equipment")
+     |> assign(:equipment, equipment)}
+  end
+
+  @impl true
+  def handle_params(params, _url, socket) do
+    {:noreply, apply_action(socket, socket.assigns.live_action, params)}
+  end
+
+  defp apply_action(socket, :index, _params) do
+    socket
+  end
+end

lib/towerops_web/live/equipment_live/index.html.heex

@@ -0,0 +1,84 @@
+<.header>
+  {@page_title}
+  <:subtitle>Monitor and manage all your network equipment</:subtitle>
+  <:actions>
+    <.link
+      navigate={~p"/orgs/#{@current_organization.slug}/equipment/new"}
+      class="btn btn-primary"
+    >
+      <.icon name="hero-plus" class="w-5 h-5" /> New Equipment
+    </.link>
+  </:actions>
+</.header>
+
+<div class="mt-8">
+  <%= if @equipment == [] do %>
+    <div class="text-center py-12">
+      <.icon name="hero-server" class="mx-auto w-12 h-12 text-base-content/40" />
+      <h3 class="mt-2 text-sm font-semibold text-base-content">No equipment</h3>
+      <p class="mt-1 text-sm text-base-content/60">Get started by adding your first equipment.</p>
+      <div class="mt-6">
+        <.link
+          navigate={~p"/orgs/#{@current_organization.slug}/equipment/new"}
+          class="btn btn-primary"
+        >
+          <.icon name="hero-plus" class="w-5 h-5" /> New Equipment
+        </.link>
+      </div>
+    </div>
+  <% else %>
+    <div class="overflow-x-auto">
+      <table class="table">
+        <thead>
+          <tr>
+            <th>Name</th>
+            <th>IP Address</th>
+            <th>Site</th>
+            <th>Status</th>
+            <th>Last Checked</th>
+            <th></th>
+          </tr>
+        </thead>
+        <tbody>
+          <tr :for={eq <- @equipment}>
+            <td class="font-medium">{eq.name}</td>
+            <td class="font-mono text-sm">{eq.ip_address}</td>
+            <td>
+              <.link
+                navigate={~p"/orgs/#{@current_organization.slug}/sites/#{eq.site.id}"}
+                class="link link-primary"
+              >
+                {eq.site.name}
+              </.link>
+            </td>
+            <td>
+              <span class={[
+                "badge",
+                eq.status == :up && "badge-success",
+                eq.status == :down && "badge-error",
+                eq.status == :unknown && "badge-ghost"
+              ]}>
+                {eq.status |> to_string() |> String.upcase()}
+              </span>
+            </td>
+            <td class="text-sm text-base-content/60">
+              <%= if eq.last_checked_at do %>
+                {Calendar.strftime(eq.last_checked_at, "%Y-%m-%d %H:%M")}
+              <% else %>
+                Never
+              <% end %>
+            </td>
+            <td>
+              <.link
+                navigate={~p"/orgs/#{@current_organization.slug}/equipment/#{eq.id}"}
+                class="btn btn-xs"
+              >
+                View
+              </.link>
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </div>
+  <% end %>
+</div>

lib/towerops_web/live/equipment_live/show.ex

@@ -0,0 +1,35 @@
+defmodule ToweropsWeb.EquipmentLive.Show do
+  @moduledoc false
+  use ToweropsWeb, :live_view
+
+  alias Towerops.Equipment
+
+  @impl true
+  def mount(_params, _session, socket) do
+    {:ok, socket}
+  end
+
+  @impl true
+  def handle_params(%{"id" => id}, _, socket) do
+    equipment = Equipment.get_equipment!(id)
+
+    {:noreply,
+     socket
+     |> assign(:page_title, equipment.name)
+     |> assign(:equipment, equipment)}
+  end
+
+  @impl true
+  def handle_event("delete", _params, socket) do
+    case Equipment.delete_equipment(socket.assigns.equipment) do
+      {:ok, _} ->
+        {:noreply,
+         socket
+         |> put_flash(:info, "Equipment deleted successfully")
+         |> push_navigate(to: ~p"/orgs/#{socket.assigns.current_organization.slug}/equipment")}
+
+      {:error, _} ->
+        {:noreply, put_flash(socket, :error, "Unable to delete equipment")}
+    end
+  end
+end

lib/towerops_web/live/equipment_live/show.html.heex

@@ -0,0 +1,103 @@
+<.header>
+  {@page_title}
+  <:subtitle>{@equipment.ip_address}</:subtitle>
+  <:actions>
+    <.link
+      navigate={~p"/orgs/#{@current_organization.slug}/equipment/#{@equipment.id}/edit"}
+      class="btn btn-sm"
+    >
+      <.icon name="hero-pencil" class="w-4 h-4" /> Edit
+    </.link>
+    <.button phx-click="delete" data-confirm="Are you sure?" class="btn-error btn-sm">
+      <.icon name="hero-trash" class="w-4 h-4" /> Delete
+    </.button>
+  </:actions>
+</.header>
+
+<div class="mt-8 grid gap-6 md:grid-cols-2">
+  <div>
+    <h3 class="text-lg font-semibold mb-4">Equipment Details</h3>
+    <dl class="space-y-3">
+      <div>
+        <dt class="text-sm font-medium text-base-content/60">Status</dt>
+        <dd class="mt-1">
+          <span class={[
+            "badge badge-lg",
+            @equipment.status == :up && "badge-success",
+            @equipment.status == :down && "badge-error",
+            @equipment.status == :unknown && "badge-ghost"
+          ]}>
+            {@equipment.status |> to_string() |> String.upcase()}
+          </span>
+        </dd>
+      </div>
+
+      <div>
+        <dt class="text-sm font-medium text-base-content/60">Site</dt>
+        <dd class="mt-1">
+          <.link
+            navigate={~p"/orgs/#{@current_organization.slug}/sites/#{@equipment.site.id}"}
+            class="link link-primary"
+          >
+            {@equipment.site.name}
+          </.link>
+        </dd>
+      </div>
+
+      <div>
+        <dt class="text-sm font-medium text-base-content/60">IP Address</dt>
+        <dd class="mt-1 font-mono">{@equipment.ip_address}</dd>
+      </div>
+
+      <%= if @equipment.description do %>
+        <div>
+          <dt class="text-sm font-medium text-base-content/60">Description</dt>
+          <dd class="mt-1">{@equipment.description}</dd>
+        </div>
+      <% end %>
+
+      <div>
+        <dt class="text-sm font-medium text-base-content/60">Monitoring</dt>
+        <dd class="mt-1">
+          <%= if @equipment.monitoring_enabled do %>
+            <span class="badge badge-success">Enabled</span>
+          <% else %>
+            <span class="badge badge-ghost">Disabled</span>
+          <% end %>
+        </dd>
+      </div>
+
+      <div>
+        <dt class="text-sm font-medium text-base-content/60">Check Interval</dt>
+        <dd class="mt-1">{@equipment.check_interval_seconds} seconds</dd>
+      </div>
+    </dl>
+  </div>
+
+  <div>
+    <h3 class="text-lg font-semibold mb-4">Monitoring History</h3>
+    <dl class="space-y-3">
+      <div>
+        <dt class="text-sm font-medium text-base-content/60">Last Checked</dt>
+        <dd class="mt-1">
+          <%= if @equipment.last_checked_at do %>
+            {Calendar.strftime(@equipment.last_checked_at, "%Y-%m-%d %H:%M:%S UTC")}
+          <% else %>
+            <span class="text-base-content/40">Never</span>
+          <% end %>
+        </dd>
+      </div>
+
+      <div>
+        <dt class="text-sm font-medium text-base-content/60">Last Status Change</dt>
+        <dd class="mt-1">
+          <%= if @equipment.last_status_change_at do %>
+            {Calendar.strftime(@equipment.last_status_change_at, "%Y-%m-%d %H:%M:%S UTC")}
+          <% else %>
+            <span class="text-base-content/40">Never</span>
+          <% end %>
+        </dd>
+      </div>
+    </dl>
+  </div>
+</div>

lib/towerops_web/live/site_live/form.ex

@@ -0,0 +1,89 @@
+defmodule ToweropsWeb.SiteLive.Form do
+  @moduledoc false
+  use ToweropsWeb, :live_view
+
+  alias Towerops.Sites
+  alias Towerops.Sites.Site
+
+  @impl true
+  def mount(_params, _session, socket) do
+    organization = socket.assigns.current_organization
+
+    {:ok,
+     socket
+     |> assign(:organization, organization)
+     |> assign(:available_parent_sites, Sites.list_organization_sites(organization.id))}
+  end
+
+  @impl true
+  def handle_params(params, _url, socket) do
+    {:noreply, apply_action(socket, socket.assigns.live_action, params)}
+  end
+
+  defp apply_action(socket, :new, _params) do
+    changeset = Sites.change_site(%Site{organization_id: socket.assigns.organization.id})
+
+    socket
+    |> assign(:page_title, "New Site")
+    |> assign(:site, %Site{})
+    |> assign(:form, to_form(changeset))
+  end
+
+  defp apply_action(socket, :edit, %{"id" => id}) do
+    site = Sites.get_organization_site!(socket.assigns.organization.id, id)
+    changeset = Sites.change_site(site)
+
+    # Filter out the current site and its descendants from parent options
+    available_parent_sites =
+      Enum.reject(socket.assigns.available_parent_sites, fn s -> s.id == site.id end)
+
+    socket
+    |> assign(:page_title, "Edit Site")
+    |> assign(:site, site)
+    |> assign(:form, to_form(changeset))
+    |> assign(:available_parent_sites, available_parent_sites)
+  end
+
+  @impl true
+  def handle_event("validate", %{"site" => site_params}, socket) do
+    changeset =
+      socket.assigns.site
+      |> Sites.change_site(site_params)
+      |> Map.put(:action, :validate)
+
+    {:noreply, assign(socket, :form, to_form(changeset))}
+  end
+
+  @impl true
+  def handle_event("save", %{"site" => site_params}, socket) do
+    save_site(socket, socket.assigns.live_action, site_params)
+  end
+
+  defp save_site(socket, :new, site_params) do
+    site_params = Map.put(site_params, "organization_id", socket.assigns.organization.id)
+
+    case Sites.create_site(site_params) do
+      {:ok, _site} ->
+        {:noreply,
+         socket
+         |> put_flash(:info, "Site created successfully")
+         |> push_navigate(to: ~p"/orgs/#{socket.assigns.organization.slug}/sites")}
+
+      {:error, %Ecto.Changeset{} = changeset} ->
+        {:noreply, assign(socket, :form, to_form(changeset))}
+    end
+  end
+
+  defp save_site(socket, :edit, site_params) do
+    case Sites.update_site(socket.assigns.site, site_params) do
+      {:ok, _site} ->
+        {:noreply,
+         socket
+         |> put_flash(:info, "Site updated successfully")
+         |> push_navigate(to: ~p"/orgs/#{socket.assigns.organization.slug}/sites")}
+
+      {:error, %Ecto.Changeset{} = changeset} ->
+        {:noreply, assign(socket, :form, to_form(changeset))}
+    end
+  end
+end

lib/towerops_web/live/site_live/form.html.heex

@@ -0,0 +1,33 @@
+<.header>
+  {@page_title}
+  <:subtitle>
+    {if @live_action == :new,
+      do: "Add a new site to your organization",
+      else: "Update site details"}
+  </:subtitle>
+</.header>
+
+<div class="max-w-2xl mt-8">
+  <.form for={@form} id="site-form" phx-change="validate" phx-submit="save">
+    <div class="space-y-4">
+      <.input field={@form[:name]} type="text" label="Site Name" required />
+
+      <.input
+        field={@form[:parent_site_id]}
+        type="select"
+        label="Parent Site (optional)"
+        prompt="No parent site"
+        options={Enum.map(@available_parent_sites, &{&1.name, &1.id})}
+      />
+
+      <.input field={@form[:location]} type="text" label="Location" />
+
+      <.input field={@form[:description]} type="textarea" label="Description" />
+
+      <div class="flex gap-2">
+        <.button phx-disable-with="Saving...">Save Site</.button>
+        <.link navigate={~p"/orgs/#{@organization.slug}/sites"} class="btn">Cancel</.link>
+      </div>
+    </div>
+  </.form>
+</div>

lib/towerops_web/live/site_live/index.ex

@@ -0,0 +1,28 @@
+defmodule ToweropsWeb.SiteLive.Index do
+  @moduledoc false
+  use ToweropsWeb, :live_view
+
+  alias Towerops.Sites
+
+  @impl true
+  def mount(_params, _session, socket) do
+    organization = socket.assigns.current_organization
+    sites = Sites.list_organization_sites(organization.id)
+    site_tree = Sites.build_site_tree(organization.id)
+
+    {:ok,
+     socket
+     |> assign(:page_title, "Sites")
+     |> assign(:sites, sites)
+     |> assign(:site_tree, site_tree)}
+  end
+
+  @impl true
+  def handle_params(params, _url, socket) do
+    {:noreply, apply_action(socket, socket.assigns.live_action, params)}
+  end
+
+  defp apply_action(socket, :index, _params) do
+    assign(socket, :page_title, "Sites")
+  end
+end

lib/towerops_web/live/site_live/index.html.heex

@@ -0,0 +1,56 @@
+<.header>
+  {@page_title}
+  <:subtitle>Manage your site locations and hierarchy</:subtitle>
+  <:actions>
+    <.link
+      navigate={~p"/orgs/#{@current_organization.slug}/sites/new"}
+      class="btn btn-primary"
+    >
+      <.icon name="hero-plus" class="w-5 h-5" /> New Site
+    </.link>
+  </:actions>
+</.header>
+
+<div class="mt-8">
+  <%= if @sites == [] do %>
+    <div class="text-center py-12">
+      <.icon name="hero-building-office" class="mx-auto w-12 h-12 text-base-content/40" />
+      <h3 class="mt-2 text-sm font-semibold text-base-content">No sites</h3>
+      <p class="mt-1 text-sm text-base-content/60">Get started by creating your first site.</p>
+      <div class="mt-6">
+        <.link
+          navigate={~p"/orgs/#{@current_organization.slug}/sites/new"}
+          class="btn btn-primary"
+        >
+          <.icon name="hero-plus" class="w-5 h-5" /> New Site
+        </.link>
+      </div>
+    </div>
+  <% else %>
+    <div class="grid gap-4 md:grid-cols-2 lg:grid-cols-3">
+      <div :for={site <- @sites} class="card bg-base-100 shadow">
+        <div class="card-body">
+          <h3 class="card-title">{site.name}</h3>
+          <%= if site.location do %>
+            <p class="text-sm text-base-content/60">
+              <.icon name="hero-map-pin" class="w-4 h-4 inline" /> {site.location}
+            </p>
+          <% end %>
+          <%= if site.parent_site do %>
+            <p class="text-xs text-base-content/40">
+              Parent: {site.parent_site.name}
+            </p>
+          <% end %>
+          <div class="card-actions justify-end mt-2">
+            <.link
+              navigate={~p"/orgs/#{@current_organization.slug}/sites/#{site.id}"}
+              class="btn btn-sm"
+            >
+              View
+            </.link>
+          </div>
+        </div>
+      </div>
+    </div>
+  <% end %>
+</div>

lib/towerops_web/live/site_live/show.ex

@@ -0,0 +1,39 @@
+defmodule ToweropsWeb.SiteLive.Show do
+  @moduledoc false
+  use ToweropsWeb, :live_view
+
+  alias Towerops.Equipment
+  alias Towerops.Sites
+
+  @impl true
+  def mount(_params, _session, socket) do
+    {:ok, socket}
+  end
+
+  @impl true
+  def handle_params(%{"id" => id}, _, socket) do
+    organization = socket.assigns.current_organization
+    site = Sites.get_organization_site!(organization.id, id)
+    equipment = Equipment.list_site_equipment(site.id)
+
+    {:noreply,
+     socket
+     |> assign(:page_title, site.name)
+     |> assign(:site, site)
+     |> assign(:equipment, equipment)}
+  end
+
+  @impl true
+  def handle_event("delete", _params, socket) do
+    case Sites.delete_site(socket.assigns.site) do
+      {:ok, _} ->
+        {:noreply,
+         socket
+         |> put_flash(:info, "Site deleted successfully")
+         |> push_navigate(to: ~p"/orgs/#{socket.assigns.current_organization.slug}/sites")}
+
+      {:error, _} ->
+        {:noreply, put_flash(socket, :error, "Unable to delete site")}
+    end
+  end
+end

lib/towerops_web/live/site_live/show.html.heex

@@ -0,0 +1,108 @@
+<.header>
+  {@page_title}
+  <:subtitle>{@site.location}</:subtitle>
+  <:actions>
+    <.link
+      navigate={~p"/orgs/#{@current_organization.slug}/sites/#{@site.id}/edit"}
+      class="btn btn-sm"
+    >
+      <.icon name="hero-pencil" class="w-4 h-4" /> Edit
+    </.link>
+    <.button phx-click="delete" data-confirm="Are you sure?" class="btn-error btn-sm">
+      <.icon name="hero-trash" class="w-4 h-4" /> Delete
+    </.button>
+  </:actions>
+</.header>
+
+<div class="mt-8 grid gap-6 md:grid-cols-2">
+  <div>
+    <h3 class="text-lg font-semibold mb-4">Site Details</h3>
+    <dl class="space-y-2">
+      <%= if @site.parent_site do %>
+        <div>
+          <dt class="text-sm font-medium text-base-content/60">Parent Site</dt>
+          <dd class="mt-1">
+            <.link
+              navigate={~p"/orgs/#{@current_organization.slug}/sites/#{@site.parent_site.id}"}
+              class="link link-primary"
+            >
+              {@site.parent_site.name}
+            </.link>
+          </dd>
+        </div>
+      <% end %>
+      <%= if @site.location do %>
+        <div>
+          <dt class="text-sm font-medium text-base-content/60">Location</dt>
+          <dd class="mt-1">{@site.location}</dd>
+        </div>
+      <% end %>
+      <%= if @site.description do %>
+        <div>
+          <dt class="text-sm font-medium text-base-content/60">Description</dt>
+          <dd class="mt-1">{@site.description}</dd>
+        </div>
+      <% end %>
+    </dl>
+
+    <%= if @site.child_sites != [] do %>
+      <div class="mt-6">
+        <h4 class="text-sm font-semibold mb-2">Child Sites</h4>
+        <ul class="space-y-1">
+          <li :for={child <- @site.child_sites}>
+            <.link
+              navigate={~p"/orgs/#{@current_organization.slug}/sites/#{child.id}"}
+              class="link link-primary text-sm"
+            >
+              {child.name}
+            </.link>
+          </li>
+        </ul>
+      </div>
+    <% end %>
+  </div>
+
+  <div>
+    <div class="flex justify-between items-center mb-4">
+      <h3 class="text-lg font-semibold">Equipment</h3>
+      <.link
+        navigate={~p"/orgs/#{@current_organization.slug}/equipment/new?site_id=#{@site.id}"}
+        class="btn btn-sm btn-primary"
+      >
+        <.icon name="hero-plus" class="w-4 h-4" /> Add Equipment
+      </.link>
+    </div>
+
+    <%= if @equipment == [] do %>
+      <p class="text-sm text-base-content/60">No equipment at this site yet.</p>
+    <% else %>
+      <div class="space-y-2">
+        <div
+          :for={eq <- @equipment}
+          class="flex items-center justify-between p-3 bg-base-200 rounded"
+        >
+          <div>
+            <p class="font-medium">{eq.name}</p>
+            <p class="text-sm text-base-content/60">{eq.ip_address}</p>
+          </div>
+          <div class="flex items-center gap-2">
+            <span class={[
+              "badge badge-sm",
+              eq.status == :up && "badge-success",
+              eq.status == :down && "badge-error",
+              eq.status == :unknown && "badge-ghost"
+            ]}>
+              {eq.status |> to_string() |> String.upcase()}
+            </span>
+            <.link
+              navigate={~p"/orgs/#{@current_organization.slug}/equipment/#{eq.id}"}
+              class="btn btn-xs"
+            >
+              View
+            </.link>
+          </div>
+        </div>
+      </div>
+    <% end %>
+  </div>
+</div>

lib/towerops_web/router.ex

@@ -84,5 +84,17 @@ defmodule ToweropsWeb.Router do
     pipe_through [:browser, :require_authenticated_user, :load_current_organization]
 
     live "/", DashboardLive, :index
+
+    # Site routes
+    live "/sites", SiteLive.Index, :index
+    live "/sites/new", SiteLive.Form, :new
+    live "/sites/:id", SiteLive.Show, :show
+    live "/sites/:id/edit", SiteLive.Form, :edit
+
+    # Equipment routes
+    live "/equipment", EquipmentLive.Index, :index
+    live "/equipment/new", EquipmentLive.Form, :new
+    live "/equipment/:id", EquipmentLive.Show, :show
+    live "/equipment/:id/edit", EquipmentLive.Form, :edit
   end
 end

priv/repo/migrations/20251221193428_create_sites.exs

@@ -0,0 +1,22 @@
+defmodule Towerops.Repo.Migrations.CreateSites do
+  use Ecto.Migration
+
+  def change do
+    create table(:sites, primary_key: false) do
+      add :id, :binary_id, primary_key: true
+
+      add :organization_id, references(:organizations, type: :binary_id, on_delete: :delete_all),
+        null: false
+
+      add :parent_site_id, references(:sites, type: :binary_id, on_delete: :delete_all)
+      add :name, :string, null: false
+      add :description, :text
+      add :location, :string
+
+      timestamps(type: :utc_datetime)
+    end
+
+    create index(:sites, [:organization_id])
+    create index(:sites, [:parent_site_id])
+  end
+end

priv/repo/migrations/20251221193436_create_equipment.exs

@@ -0,0 +1,23 @@
+defmodule Towerops.Repo.Migrations.CreateEquipment do
+  use Ecto.Migration
+
+  def change do
+    create table(:equipment, primary_key: false) do
+      add :id, :binary_id, primary_key: true
+      add :site_id, references(:sites, type: :binary_id, on_delete: :delete_all), null: false
+      add :name, :string, null: false
+      add :ip_address, :string, null: false
+      add :description, :text
+      add :status, :string, null: false, default: "unknown"
+      add :last_checked_at, :utc_datetime
+      add :last_status_change_at, :utc_datetime
+      add :monitoring_enabled, :boolean, default: true, null: false
+      add :check_interval_seconds, :integer, default: 300, null: false
+
+      timestamps(type: :utc_datetime)
+    end
+
+    create index(:equipment, [:site_id])
+    create index(:equipment, [:status])
+  end
+end