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

  alias Localspot.Businesses
  alias Localspot.Businesses.Business

  @impl true
  def mount(_params, _session, socket) do
    categories = Businesses.list_categories()
    changeset = Businesses.change_business(%Business{})

    {:ok,
     socket
     |> assign(:page_title, "Add Your Business")
     |> assign(:categories, categories)
     |> assign(:form, to_form(changeset))
     |> assign(:hours, default_hours())
     |> assign(:photo_url, "")}
  end

  @impl true
  def handle_event("validate", %{"business" => business_params}, socket) do
    changeset =
      %Business{}
      |> Businesses.change_business(business_params)
      |> Map.put(:action, :validate)

    {:noreply, assign(socket, :form, to_form(changeset))}
  end

  @impl true
  def handle_event("update_hours", %{"day" => day, "field" => field, "value" => value}, socket) do
    day = String.to_integer(day)
    hours = update_hours(socket.assigns.hours, day, field, value)
    {:noreply, assign(socket, :hours, hours)}
  end

  @impl true
  def handle_event("update_photo_url", %{"value" => value}, socket) do
    {:noreply, assign(socket, :photo_url, value)}
  end

  @impl true
  def handle_event("save", %{"business" => business_params}, socket) do
    business_params =
      business_params
      |> Map.put("slug", Businesses.generate_slug(business_params["name"] || ""))
      |> Map.put("locally_owned", true)

    hours_attrs = build_hours_attrs(socket.assigns.hours)
    photo_attrs = build_photo_attrs(socket.assigns.photo_url)

    case Businesses.create_business_with_associations(business_params, hours_attrs, photo_attrs) do
      {:ok, business} ->
        {:noreply,
         socket
         |> put_flash(:info, "Business submitted successfully!")
         |> push_navigate(to: ~p"/businesses/#{business.slug}")}

      {:error, %Ecto.Changeset{} = changeset} ->
        {:noreply, assign(socket, :form, to_form(changeset))}
    end
  end

  defp default_hours do
    for day <- 0..6, into: %{} do
      {day, %{closed: day == 0, opens_at: "09:00", closes_at: "17:00"}}
    end
  end

  defp update_hours(hours, day, "closed", value) do
    put_in(hours, [day, :closed], value == "true")
  end

  defp update_hours(hours, day, field, value) do
    put_in(hours, [day, String.to_existing_atom(field)], value)
  end

  defp build_hours_attrs(hours) do
    hours
    |> Enum.map(fn {day, data} ->
      if data.closed do
        %{day_of_week: day, closed: true}
      else
        %{
          day_of_week: day,
          closed: false,
          opens_at: parse_time(data.opens_at),
          closes_at: parse_time(data.closes_at)
        }
      end
    end)
  end

  defp parse_time(time_string) do
    case Time.from_iso8601(time_string <> ":00") do
      {:ok, time} -> time
      _ -> nil
    end
  end

  defp build_photo_attrs(""), do: []
  defp build_photo_attrs(url), do: [%{url: url, primary: true}]

  @impl true
  def render(assigns) do
    ~H"""
    <Layouts.app flash={@flash}>
      <.link navigate={~p"/businesses"} class="btn btn-ghost btn-sm mb-4">
        <.icon name="hero-arrow-left" class="w-4 h-4" /> Back to Directory
      </.link>

      <.header>
        Add Your Business
        <:subtitle>List your locally owned business in our directory</:subtitle>
      </.header>

      <div class="mt-8 max-w-2xl">
        <div class="alert alert-info mb-6">
          <.icon name="hero-information-circle" class="w-5 h-5" />
          <span>
            This directory is exclusively for locally owned businesses - no chains or franchises.
          </span>
        </div>

        <.form for={@form} phx-change="validate" phx-submit="save" class="space-y-6">
          <div class="card bg-base-200">
            <div class="card-body">
              <h2 class="card-title">Basic Information</h2>

              <.input field={@form[:name]} label="Business Name" required />
              <.input field={@form[:description]} type="textarea" label="Description" rows="3" />

              <div class="form-control">
                <label class="label">
                  <span class="label-text">Category</span>
                </label>
                <select name="business[category_id]" class="select select-bordered w-full" required>
                  <option value="">Select a category</option>
                  <option
                    :for={cat <- @categories}
                    value={cat.id}
                    selected={to_string(cat.id) == to_string(@form[:category_id].value)}
                  >
                    {cat.name}
                  </option>
                </select>
              </div>
            </div>
          </div>

          <div class="card bg-base-200">
            <div class="card-body">
              <h2 class="card-title">Location</h2>

              <.input field={@form[:street_address]} label="Street Address" required />

              <div class="grid grid-cols-2 md:grid-cols-4 gap-4">
                <div class="col-span-2">
                  <.input field={@form[:city]} label="City" required />
                </div>
                <.input field={@form[:state]} label="State" maxlength="2" placeholder="OH" required />
                <.input field={@form[:zip_code]} label="ZIP Code" maxlength="10" required />
              </div>

              <div class="grid grid-cols-2 gap-4">
                <.input
                  field={@form[:latitude]}
                  type="number"
                  step="any"
                  label="Latitude"
                  placeholder="39.9612"
                />
                <.input
                  field={@form[:longitude]}
                  type="number"
                  step="any"
                  label="Longitude"
                  placeholder="-82.9988"
                />
              </div>
              <p class="text-sm text-base-content/60">
                Coordinates help customers find you on the map. You can find yours on Google Maps.
              </p>
            </div>
          </div>

          <div class="card bg-base-200">
            <div class="card-body">
              <h2 class="card-title">Contact Information</h2>

              <.input field={@form[:phone]} label="Phone Number" placeholder="6145551234" />
              <.input field={@form[:email]} type="email" label="Email Address" />
              <.input
                field={@form[:website]}
                type="url"
                label="Website"
                placeholder="https://example.com"
              />
            </div>
          </div>

          <div class="card bg-base-200">
            <div class="card-body">
              <h2 class="card-title">Business Hours</h2>

              <div class="space-y-3">
                <.hours_row :for={day <- 0..6} day={day} hours={@hours[day]} />
              </div>
            </div>
          </div>

          <div class="card bg-base-200">
            <div class="card-body">
              <h2 class="card-title">Photo</h2>

              <div class="form-control">
                <label class="label">
                  <span class="label-text">Photo URL</span>
                </label>
                <input
                  type="url"
                  name="photo_url"
                  value={@photo_url}
                  placeholder="https://example.com/photo.jpg"
                  class="input input-bordered w-full"
                  phx-blur="update_photo_url"
                  phx-value-value={@photo_url}
                />
              </div>
              <p class="text-sm text-base-content/60">
                Enter a URL to an image of your business. Direct image links work best.
              </p>
            </div>
          </div>

          <div class="card bg-base-200">
            <div class="card-body">
              <h2 class="card-title">Local Ownership Attestation</h2>

              <label class="flex items-start gap-3 cursor-pointer">
                <input
                  type="checkbox"
                  name="attest_local"
                  class="checkbox checkbox-primary mt-1"
                  required
                />
                <span class="text-sm">
                  I confirm that this business is locally owned and operated, not a chain, franchise, or corporate-owned location.
                  I understand that providing false information may result in removal from the directory.
                </span>
              </label>
            </div>
          </div>

          <div class="flex gap-4 justify-end">
            <.link navigate={~p"/businesses"} class="btn btn-ghost">Cancel</.link>
            <button type="submit" class="btn btn-primary">Submit Business</button>
          </div>
        </.form>
      </div>
    </Layouts.app>
    """
  end

  defp hours_row(assigns) do
    ~H"""
    <div class="flex items-center gap-4 flex-wrap">
      <span class="w-24 font-medium">{Businesses.day_name(@day)}</span>

      <label class="flex items-center gap-2 cursor-pointer">
        <input
          type="checkbox"
          class="checkbox checkbox-sm"
          checked={@hours.closed}
          phx-click="update_hours"
          phx-value-day={@day}
          phx-value-field="closed"
          phx-value-value={!@hours.closed}
        />
        <span class="text-sm">Closed</span>
      </label>

      <div :if={!@hours.closed} class="flex items-center gap-2">
        <input
          type="time"
          value={@hours.opens_at}
          class="input input-bordered input-sm w-32"
          phx-blur="update_hours"
          phx-value-day={@day}
          phx-value-field="opens_at"
        />
        <span>to</span>
        <input
          type="time"
          value={@hours.closes_at}
          class="input input-bordered input-sm w-32"
          phx-blur="update_hours"
          phx-value-day={@day}
          phx-value-field="closes_at"
        />
      </div>
    </div>
    """
  end
end