defmodule MicrowavepropWeb.ContactLive.Index do
  @moduledoc false
  use MicrowavepropWeb, :live_view

  alias Microwaveprop.Radio

  @sortable_fields ~w(station1 station2 band mode distance_km qso_timestamp inserted_at)
  @default_sort_by "inserted_at"
  @default_sort_order "desc"

  @impl true
  def mount(_params, _session, socket) do
    {:ok, socket}
  end

  @impl true
  def handle_params(params, _uri, socket) do
    page =
      case Integer.parse(Map.get(params, "page", "1")) do
        {n, _} -> max(n, 1)
        :error -> 1
      end

    sort_by = validate_sort_field(Map.get(params, "sort_by", @default_sort_by))
    sort_order = validate_sort_order(Map.get(params, "sort_order", @default_sort_order))
    search = Map.get(params, "search", "")

    result =
      Radio.list_contacts(
        page: page,
        sort_by: String.to_existing_atom(sort_by),
        sort_order: String.to_existing_atom(sort_order),
        search: search
      )

    {:noreply,
     assign(socket,
       page_title: "Contacts",
       page: result.page,
       total_pages: result.total_pages,
       total_entries: result.total_entries,
       contacts: result.entries,
       grouped_contacts: result.grouped_entries,
       sort_by: sort_by,
       sort_order: sort_order,
       search: search
     )}
  end

  @impl true
  def handle_event("search", %{"search" => search}, socket) do
    {:noreply, push_patch(socket, to: ~p"/contacts?search=#{search}")}
  end

  @impl true
  def handle_event("sort", %{"field" => field}, socket) do
    field = validate_sort_field(field)

    new_order =
      if socket.assigns.sort_by == field && socket.assigns.sort_order == "asc",
        do: "desc",
        else: "asc"

    params = %{sort_by: field, sort_order: new_order}
    params = if socket.assigns.search == "", do: params, else: Map.put(params, :search, socket.assigns.search)
    {:noreply, push_patch(socket, to: ~p"/contacts?#{params}")}
  end

  defp validate_sort_field(field) when field in @sortable_fields, do: field
  defp validate_sort_field(_), do: @default_sort_by

  defp validate_sort_order(order) when order in ~w(asc desc), do: order
  defp validate_sort_order(_), do: @default_sort_order

  @enrichment_fields [
    {:hrrr_status, "HRRR"},
    {:weather_status, "Weather"},
    {:terrain_status, "Terrain"},
    {:iemre_status, "IEMRE"}
  ]
  @done_statuses [:complete, :unavailable]

  defp submitted_cell(%{user: %{callsign: callsign}}) when is_binary(callsign), do: callsign
  defp submitted_cell(%{user_submitted: true}), do: "Yes"
  defp submitted_cell(_), do: "—"

  defp enrichment_badge(contact) do
    details =
      Enum.map(@enrichment_fields, fn {field, name} ->
        {name, Map.get(contact, field)}
      end)

    done = Enum.count(details, fn {_, s} -> s in @done_statuses end)
    failed = Enum.count(details, fn {_, s} -> s == :failed end)

    {label, class} =
      cond do
        done == 4 -> {"Complete", "badge-success"}
        failed > 0 -> {"Failed", "badge-error"}
        done > 0 -> {"Partial", "badge-warning"}
        true -> {"Pending", "badge-ghost"}
      end

    tooltip =
      Enum.map_join(details, ", ", fn {name, status} ->
        "#{name}: #{status}"
      end)

    assigns = %{label: label, class: class, tooltip: tooltip}

    ~H"""
    <span class={["badge badge-xs", @class]} title={@tooltip}>{@label}</span>
    """
  end

  @impl true
  def render(assigns) do
    ~H"""
    <Layouts.app flash={@flash} current_scope={@current_scope} max_width="max-w-7xl">
      <.header>
        Contacts
        <:subtitle>{@total_entries} contacts</:subtitle>
        <:actions>
          <.link navigate={~p"/submit"} class="btn btn-primary">
            <.icon name="hero-plus" class="w-5 h-5" /> Submit Contact
          </.link>
        </:actions>
      </.header>

      <form phx-submit="search" class="mb-4">
        <div class="flex items-center gap-2">
          <input
            name="search"
            value={@search}
            placeholder="Search callsign or pair (e.g. W5LUA W5HN)..."
            type="text"
            class="input input-bordered input-sm w-64"
          />
          <button type="submit" class="btn btn-sm btn-outline">Search</button>
          <.link :if={@search != ""} patch={~p"/contacts"} class="btn btn-sm btn-ghost">Clear</.link>
        </div>
      </form>

      <table class="table table-sm w-full">
        <thead>
          <tr>
            <th class="w-8"></th>
            <th>Station 1</th>
            <th>Grid 1</th>
            <th>Station 2</th>
            <th>Grid 2</th>
            <th>Band</th>
            <th>Mode</th>
            <th>Distance (km)</th>
            <th>Submitted</th>
            <th>Enriched</th>
            <th></th>
            <th>Timestamp (UTC)</th>
            <th>Added (UTC)</th>
          </tr>
        </thead>
        <tbody>
          <%= for {primary, reciprocals} <- @grouped_contacts do %>
            <tr class="h-1">
              <td colspan="13"></td>
            </tr>
            <tr
              class={[
                "hover:bg-base-200 cursor-pointer",
                reciprocals != [] && "bg-primary/5"
              ]}
              phx-click={JS.navigate(~p"/contacts/#{primary.id}")}
            >
              <td class="w-8 text-center">
                <span
                  :if={reciprocals != []}
                  class="badge badge-primary badge-xs"
                  title="Has reciprocal contact"
                >
                  {length(reciprocals) + 1}
                </span>
              </td>
              <td class="font-mono font-semibold">{primary.station1}</td>
              <td>{primary.grid1 || "—"}</td>
              <td class="font-mono font-semibold">{primary.station2}</td>
              <td>{primary.grid2 || "—"}</td>
              <td>{primary.band}</td>
              <td>{primary.mode}</td>
              <td>{primary.distance_km}</td>
              <td>{submitted_cell(primary)}</td>
              <td>{enrichment_badge(primary)}</td>
              <td class="text-center">{if primary.flagged_invalid, do: "🚩"}</td>
              <td>{Calendar.strftime(primary.qso_timestamp, "%Y-%m-%d %H:%M")}</td>
              <td>{Calendar.strftime(primary.inserted_at, "%Y-%m-%d %H:%M")}</td>
            </tr>
            <%= for recip <- reciprocals do %>
              <tr
                class="hover:bg-base-200 cursor-pointer bg-primary/5 opacity-70 border-t-0"
                phx-click={JS.navigate(~p"/contacts/#{recip.id}")}
              >
                <td class="w-8 text-center text-primary">↳</td>
                <td class="font-mono">{recip.station1}</td>
                <td>{recip.grid1 || "—"}</td>
                <td class="font-mono">{recip.station2}</td>
                <td>{recip.grid2 || "—"}</td>
                <td>{recip.band}</td>
                <td>{recip.mode}</td>
                <td>{recip.distance_km}</td>
                <td>{submitted_cell(recip)}</td>
                <td>{enrichment_badge(recip)}</td>
                <td class="text-center">{if recip.flagged_invalid, do: "🚩"}</td>
                <td>{Calendar.strftime(recip.qso_timestamp, "%Y-%m-%d %H:%M")}</td>
                <td>{Calendar.strftime(recip.inserted_at, "%Y-%m-%d %H:%M")}</td>
              </tr>
            <% end %>
          <% end %>
        </tbody>
      </table>

      <div class="flex items-center justify-between pt-4">
        <.link
          :if={@page > 1}
          patch={
            ~p"/contacts?page=#{@page - 1}&sort_by=#{@sort_by}&sort_order=#{@sort_order}&search=#{@search}"
          }
          class="btn btn-sm btn-outline"
        >
          <.icon name="hero-chevron-left" class="w-4 h-4" /> Previous
        </.link>
        <span :if={@page <= 1} />

        <span class="text-sm text-base-content/70">Page {@page} of {@total_pages}</span>

        <.link
          :if={@page < @total_pages}
          patch={
            ~p"/contacts?page=#{@page + 1}&sort_by=#{@sort_by}&sort_order=#{@sort_order}&search=#{@search}"
          }
          class="btn btn-sm btn-outline"
        >
          Next <.icon name="hero-chevron-right" class="w-4 h-4" />
        </.link>
        <span :if={@page >= @total_pages} />
      </div>
    </Layouts.app>
    """
  end
end