defmodule ToweropsWeb.ReportsLive do
  @moduledoc """
  Scheduled Reports management page.

  Lists existing reports and provides a form to create new ones.
  """
  use ToweropsWeb, :live_view

  alias Towerops.Reports
  alias Towerops.Reports.Report
  alias Towerops.Workers.ReportWorker

  @impl true
  def mount(_params, _session, socket) do
    organization = socket.assigns.current_scope.organization
    reports = Reports.list_reports(organization.id)

    {:ok,
     socket
     |> assign(:page_title, "Reports")
     |> assign(:organization_id, organization.id)
     |> assign(:reports, reports)
     |> assign(:show_form, false)
     |> assign(:form, to_form(Report.changeset(%Report{}, %{})))}
  end

  @impl true
  def handle_event("show_form", _, socket) do
    {:noreply, assign(socket, show_form: true)}
  end

  @impl true
  def handle_event("hide_form", _, socket) do
    {:noreply, assign(socket, show_form: false)}
  end

  @impl true
  def handle_event("save", %{"report" => params}, socket) do
    recipients =
      (params["recipients_text"] || "")
      |> String.split([",", "\n", ";"])
      |> Enum.map(&String.trim/1)
      |> Enum.reject(&(&1 == ""))

    attrs =
      params
      |> Map.put("recipients", recipients)
      |> Map.put("organization_id", socket.assigns.organization_id)
      |> Map.put("created_by_id", socket.assigns.current_scope.user.id)
      |> Map.put("schedule", %{"type" => params["schedule_type"] || "weekly"})
      |> Map.put("scope", %{
        "target" => params["scope_target"] || "all",
        "days" => String.to_integer(params["scope_days"] || "7")
      })

    case Reports.create_report(attrs) do
      {:ok, _report} ->
        reports = Reports.list_reports(socket.assigns.organization_id)

        {:noreply,
         socket
         |> put_flash(:info, "Report created successfully")
         |> assign(:reports, reports)
         |> assign(:show_form, false)
         |> assign(:form, to_form(Report.changeset(%Report{}, %{})))}

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

  @impl true
  def handle_event("toggle", %{"id" => id}, socket) do
    report = Reports.get_report!(id)

    case Reports.toggle_report(report) do
      {:ok, _} ->
        reports = Reports.list_reports(socket.assigns.organization_id)
        {:noreply, assign(socket, reports: reports)}

      {:error, _} ->
        {:noreply, put_flash(socket, :error, "Failed to toggle report")}
    end
  end

  @impl true
  def handle_event("delete", %{"id" => id}, socket) do
    report = Reports.get_report!(id)

    case Reports.delete_report(report) do
      {:ok, _} ->
        reports = Reports.list_reports(socket.assigns.organization_id)

        {:noreply,
         socket
         |> put_flash(:info, "Report deleted")
         |> assign(:reports, reports)}

      {:error, _} ->
        {:noreply, put_flash(socket, :error, "Failed to delete report")}
    end
  end

  @impl true
  def handle_event("run_now", %{"id" => id}, socket) do
    case %{"report_id" => id}
         |> ReportWorker.new()
         |> Oban.insert() do
      {:ok, _} ->
        {:noreply, put_flash(socket, :info, "Report queued for delivery")}

      {:error, _} ->
        {:noreply, put_flash(socket, :error, "Failed to queue report")}
    end
  end

  # -- Helpers --

  @doc false
  def humanize_type("uptime_summary"), do: "Uptime Summary"
  def humanize_type("alert_history"), do: "Alert History"
  def humanize_type("capacity_trends"), do: "Capacity Trends"
  def humanize_type("rf_link_health"), do: "RF Link Health"
  def humanize_type(type), do: type

  @doc false
  def humanize_schedule(%{"type" => type}), do: String.capitalize(type)
  def humanize_schedule(_), do: "-"

  @doc false
  def format_recipients(recipients) when is_list(recipients), do: Enum.join(recipients, ", ")
  def format_recipients(_), do: "-"

  @doc false
  def status_badge("success"), do: {"Success", "bg-green-100 text-green-700 dark:bg-green-900/50 dark:text-green-300"}
  def status_badge("failed"), do: {"Failed", "bg-red-100 text-red-700 dark:bg-red-900/50 dark:text-red-300"}

  def status_badge("partial_failure"),
    do: {"Partial", "bg-yellow-100 text-yellow-700 dark:bg-yellow-900/50 dark:text-yellow-300"}

  def status_badge(_), do: {"Never Run", "bg-gray-100 text-gray-700 dark:bg-gray-800 dark:text-gray-300"}
end