defmodule MedicodeWeb.Components do
  @moduledoc """
  Functional UI components for the main transcription and coding view. 
  """

  use Phoenix.Component
  use MedicodeWeb, :verified_routes

  import MedicodeWeb.CoreComponents

  attr(:audio_upload, Phoenix.LiveView.UploadConfig, required: true)

  @doc """
  Displays a form containing a button for listening to live audio and a file upload for recorded audio files.
  """
  def upload_form(assigns) do
    ~H"""
    <form
      id="audio-form"
      phx-submit="save"
      phx-change="validate"
      class="w-full flex flex-col items-center gap-[21px]"
    >
      <div class="w-full px-4 py-[19px] rounded-[10px] flex items-center bg-light-divider">
        <button
          type="button"
          disabled
          phx-click="toggle_recording"
          title="Not available"
          class="cursor-not-allowed mr-2 h-full px-3 py-2.5 rounded-lg border border-emerald-300 bg-emerald-200"
        >
          <.icon name="hero-microphone" class="w-6 h-6" />
        </button>

        <label
          for={@audio_upload.ref}
          class="cursor-pointer mr-4 px-[16.5px] py-[9.941667px] rounded-lg bg-[#444444]/10"
        >
          <img src={~p"/images/paperclip.svg"} width="15" height="30" />
        </label>
        <.live_file_input
          class="flex-1 cursor-pointer file:hidden file:font-secondary file:text-sm file:rounded-full file:px-4 file:py-2 file:border-0 file:bg-brand file:hover:bg-brand-active file:text-white"
          upload={@audio_upload}
        />
        <button name="submit-btn" title="Upload and process file">
          <img src={~p"/images/upload.svg"} />
        </button>
      </div>

      <p class="leading-normal text-type-black-secondary">Audio file can be .mp3</p>
    </form>
    """
  end

  attr(:visible, :boolean, required: true)

  @doc """
  A loading icon and message displayed while the audio is being processed.
  """
  def loading_message(assigns) do
    ~H"""
    <%= if @visible do %>
      <div class="flex gap-2 items-center p-2 rounded-md text-slate-800 text-sm bg-slate-200 border border-slate-300">
        <.icon name="hero-arrow-path" class="w-4 h-4 animate-spin" />
        <p>Transcribing and tagging audio file...</p>
      </div>
    <% end %>
    """
  end

  attr(:id, :string, required: true)
  attr(:target, :any, required: true)
  attr(:transcription, Medicode.Transcriptions.Transcription, required: true)
  attr(:summary_keywords, :list, default: [])
  attr(:finalized_codes, :list, default: [])
  attr(:timezone, :string, default: "Etc/UTC")

  @doc """
  Shows the status and keywords for the current session.
  """
  def result_heading(assigns) do
    assigns =
      assign_new(assigns, :transcript_inserted_at, fn _ ->
        assigns.transcription.inserted_at
        |> DateTime.shift_zone!(assigns.timezone)
        |> Calendar.strftime("%a, %b %d, %Y, %I:%M %p")
      end)

    ~H"""
    <div class="flex justify-between">
      <div class="flex items-center">
        <img
          :if={@transcription.status == :waiting}
          src={~p"/images/loading.svg"}
          width="36"
          class="mr-6 animate-spin"
        />
        <img
          :if={@transcription.status == :finished}
          src={~p"/images/checkmark.svg"}
          width="46"
          class="mr-[17px]"
        />

        <div class="px-[14px] py-3 flex items-center gap-3 bg-brand rounded-lg text-white mr-4 overflow-hidden">
          <img src={~p"/images/document.svg"} width="20" />
          <p
            id={@id}
            contenteditable
            phx-hook="ContentEditor"
            phx-event-name="rename_transcription"
            role="textbox"
            class="font-secondary"
          >
            <%= @transcription.filename %>
          </p>
        </div>
      </div>
    </div>

    <div class="border-b border-[#444444]/20">
      <div class="px-4 py-2 flex items-center gap-2">
        <img src={~p"/images/calendar.svg"} width="16" />

        <span class="text-sm leading-normal font-bold text-type-black-tertiary uppercase">
          <%= @transcript_inserted_at %>
        </span>
      </div>
      <div class="px-4 pt-2 pb-10 flex flex-col gap-2">
        <p class="leading-normal font-bold text-type-black-primary uppercase">Summary Keywords</p>

        <div
          class="flex flex-row items-center divide-x divide-black/15 text-sm leading-normal text-type-black-tertiary"
          id="keyword_list"
        >
          <!-- coronary, artery, disease, unstable, angina, admitted -->
          <%= for keyword <- format_keywords(@summary_keywords) do %>
            <span class="px-2" title={keyword.score}><%= keyword.keyword %></span>
          <% end %>
        </div>
      </div>
      <div :if={!Enum.empty?(@finalized_codes)} class="px-4 pt-2 pb-10 flex flex-col gap-2">
        <p class="leading-normal font-bold text-type-black-primary uppercase">Finalized Codes</p>

        <div
          class="flex flex-row items-center divide-x divide-black/15 text-sm leading-normal text-type-black-tertiary"
          id="finalized_vector_code_list"
        >
          <span :for={code_vector <- @finalized_codes} class="px-2" title={code_vector.code}>
            <%= code_vector.code %>
          </span>
        </div>

        <.link
          href={~p"/transcription/reports/#{@transcription.id}"}
          class="font-semibold text-brand hover:underline"
          download={"transcription-report-#{@transcription.id}.pdf"}
        >
          Download Report
        </.link>
      </div>
    </div>
    """
  end

  # Formats keywords for display in the result_heading component
  defp format_keywords(keyword_predictions) do
    keyword_predictions
    |> List.flatten()
    |> Enum.sort_by(& &1.score, :desc)
    |> Enum.take(7)
  end

  attr(:code, :string, required: true)
  attr(:label, :string, required: true)

  @doc """
  Displays a single code and its description.
  """
  def code_display(assigns) do
    ~H"""
    <div class="py-4 text-sm flex flex-col gap-1 font-secondary text-type-black-primary rounded">
      <p class="text-lg font-bold leading-[22.97px]"><%= @code %></p>
      <p class="text-base leading-[20.42px]"><%= @label %></p>
    </div>
    """
  end
end