defmodule LocalspotWeb.BusinessLive.Index do
  use LocalspotWeb, :live_view

  alias Localspot.Businesses

  @impl true
  def mount(_params, _session, socket) do
    categories = Businesses.list_categories()

    {:ok,
     socket
     |> assign(:page_title, "Local Businesses")
     |> assign(:categories, categories)
     |> assign(:filters, %{})
     |> stream(:businesses, [])}
  end

  @impl true
  def handle_params(params, _uri, socket) do
    businesses = Businesses.list_businesses(params)

    {:noreply,
     socket
     |> assign(:filters, params)
     |> stream(:businesses, businesses, reset: true)}
  end

  @impl true
  def handle_event("search", %{"search" => search_params}, socket) do
    params = build_url_params(socket.assigns.filters, search_params)
    {:noreply, push_patch(socket, to: ~p"/businesses?#{params}")}
  end

  @impl true
  def handle_event("clear_filters", _params, socket) do
    {:noreply, push_patch(socket, to: ~p"/businesses")}
  end

  @impl true
  def handle_event("set_location", %{"latitude" => lat, "longitude" => lng}, socket) do
    params =
      socket.assigns.filters
      |> Map.put("latitude", lat)
      |> Map.put("longitude", lng)

    {:noreply, push_patch(socket, to: ~p"/businesses?#{params}")}
  end

  defp build_url_params(existing, new) do
    Map.merge(existing, new)
    |> Enum.reject(fn {_k, v} -> v == "" or is_nil(v) end)
    |> Map.new()
  end

  @impl true
  def render(assigns) do
    ~H"""
    <Layouts.app flash={@flash}>
      <div class="flex items-center justify-between">
        <.header>
          Local Business Directory
          <:subtitle>Discover locally owned businesses in your area</:subtitle>
        </.header>

        <.link navigate={~p"/businesses/map"} class="btn btn-ghost btn-sm">
          <.icon name="hero-map" class="w-4 h-4" /> Map View
        </.link>
      </div>

      <div id="business-directory" class="mt-6 space-y-6">
        <%!-- Search and filters form --%>
        <.form
          for={%{}}
          as={:search}
          id="search-form"
          phx-submit="search"
          class="flex flex-col md:flex-row gap-4"
        >
          <div class="flex-1">
            <input
              type="search"
              name="search[query]"
              placeholder="Search businesses..."
              value={@filters["query"]}
              class="input input-bordered w-full"
            />
          </div>

          <div class="w-full md:w-48">
            <select name="search[category_id]" class="select select-bordered w-full">
              <option value="">All Categories</option>
              <option
                :for={cat <- @categories}
                value={cat.id}
                selected={@filters["category_id"] == to_string(cat.id)}
              >
                {cat.name}
              </option>
            </select>
          </div>

          <div class="w-full md:w-32">
            <select name="search[radius]" class="select select-bordered w-full">
              <option value="5" selected={@filters["radius"] == "5"}>5 miles</option>
              <option
                value="10"
                selected={
                  @filters["radius"] != "5" and @filters["radius"] != "25" and
                    @filters["radius"] != "50"
                }
              >
                10 miles
              </option>
              <option value="25" selected={@filters["radius"] == "25"}>25 miles</option>
              <option value="50" selected={@filters["radius"] == "50"}>50 miles</option>
            </select>
          </div>

          <div class="flex gap-2">
            <button type="submit" class="btn btn-primary">Search</button>
            <button type="button" phx-click="clear_filters" class="btn btn-ghost">Clear</button>
          </div>
        </.form>

        <%!-- Location status --%>
        <div
          :if={is_nil(@filters["latitude"])}
          class="alert alert-info"
        >
          <.icon name="hero-map-pin" class="w-5 h-5" />
          <span>Enable location to find businesses near you</span>
          <button
            type="button"
            class="btn btn-sm btn-primary"
            id="get-location-btn"
            phx-hook="Geolocation"
          >
            Use My Location
          </button>
        </div>

        <div :if={@filters["latitude"]} class="alert alert-success">
          <.icon name="hero-map-pin" class="w-5 h-5" />
          <span>Showing businesses within {@filters["radius"] || "10"} miles of your location</span>
        </div>

        <%!-- Locally owned filter --%>
        <label class="flex items-center gap-2 cursor-pointer">
          <input
            type="checkbox"
            name="locally_owned_filter"
            class="checkbox checkbox-sm checkbox-primary"
            checked={@filters["locally_owned"] == "true"}
            phx-click="search"
            phx-value-search[locally_owned]={
              if @filters["locally_owned"] == "true", do: "", else: "true"
            }
          />
          <span>Show only locally owned businesses</span>
        </label>

        <%!-- Business listing --%>
        <div id="businesses" phx-update="stream" class="grid gap-4 md:grid-cols-2 lg:grid-cols-3">
          <div class="hidden only:block col-span-full text-center py-12 text-base-content/60">
            No businesses found matching your criteria.
          </div>

          <.business_card
            :for={{dom_id, business} <- @streams.businesses}
            id={dom_id}
            business={business}
          />
        </div>
      </div>

      <div class="mt-8 text-center">
        <.link navigate={~p"/businesses/new"} class="btn btn-secondary">
          <.icon name="hero-plus" class="w-5 h-5" /> Add Your Business
        </.link>
      </div>
    </Layouts.app>
    """
  end

  defp business_card(assigns) do
    ~H"""
    <div id={@id} class="card bg-base-200 shadow-md hover:shadow-lg transition-shadow">
      <figure :if={primary_photo(@business.photos)} class="h-48">
        <img
          src={primary_photo(@business.photos).url}
          alt={primary_photo(@business.photos).alt_text || @business.name}
          class="w-full h-full object-cover"
        />
      </figure>

      <div class="card-body">
        <div class="flex items-start justify-between">
          <h2 class="card-title text-lg">
            <.link navigate={~p"/businesses/#{@business.slug}"} class="hover:underline">
              {@business.name}
            </.link>
          </h2>
          <span
            :if={@business.locally_owned}
            class="badge badge-success badge-sm"
            title="Locally Owned"
          >
            Local
          </span>
        </div>

        <p :if={@business.description} class="text-sm text-base-content/70 line-clamp-2">
          {@business.description}
        </p>

        <div class="flex items-center gap-2 text-sm text-base-content/60">
          <.icon name="hero-map-pin" class="w-4 h-4" />
          <span>{@business.city}, {@business.state}</span>
        </div>

        <div :if={@business.distance_miles} class="text-sm text-base-content/60">
          <.icon name="hero-arrow-right" class="w-4 h-4 inline" />
          {@business.distance_miles} miles away
        </div>

        <div class="text-xs text-base-content/50 mt-1">
          {if @business.category, do: @business.category.name, else: "Uncategorized"}
        </div>

        <div class="card-actions justify-end mt-2">
          <.link navigate={~p"/businesses/#{@business.slug}"} class="btn btn-sm btn-primary">
            View Details
          </.link>
        </div>
      </div>
    </div>
    """
  end

  defp primary_photo([]), do: nil
  defp primary_photo(photos), do: Enum.find(photos, & &1.primary) || List.first(photos)
end