defmodule PostlandWeb.ProfileLive do
  use PostlandWeb, :live_view

  alias Postland.Accounts.User
  alias Postland.Repo

  def render(assigns) do
    ~H"""
    <div class="flex items-start space-x-4">
      <div class="flex-shrink-0 relative">
        <img
          class="h-16 w-16 rounded-full drop-shadow-lg"
          src={@account.icon || url(~p"/images/avatar.png")}
          alt=""
        />
        <div
          :if={@editing}
          class="absolute top-0 left-0 h-16 w-16 rounded-full backdrop-brightness-50 flex justify-center items-center"
        >
          <.icon name="hero-pencil" class="text-violet-100" />
        </div>
        <.form for={@form} phx-submit="avatar" phx-change="avatar">
          <.live_file_input
            :if={@editing}
            id="avatar-upload"
            class="opacity-0 absolute top-0 left-0 bottom-0 right-0"
            upload={@uploads.avatar}
          />
        </.form>
      </div>
      <div class="flex flex-col bg-white rounded-lg shadow container">
        <.form for={@form} id="profile-form" phx-change="validate" phx-submit="submit">
          <div class="p-4">
            <h2 :if={!@editing} class="font-bold inline-block"><%= @account.name %></h2>
            <span :if={!@editing} class="ml-2 text-gray-500">
              @<%= @account.username %>@<%= @host %>
            </span>
            <.input :if={@editing} field={@form[:name]} label="Display Name" />
          </div>
          <hr />
          <div class="p-4">
            <p :if={!@editing} class="text-gray-500 text-sm">
              <%= {:safe, Earmark.as_html!(@account.summary || "")} %>
            </p>
            <.input :if={@editing} field={@form[:summary]} type="textarea" label="Bio" />
          </div>
        </.form>
        <hr />
        <div :if={assigns[:current_user]} class="text-right p-4">
          <.button :if={!@editing} phx-click="edit">Edit Profile</.button>
          <.button :if={@editing} phx-click="edit" form="profile-form">Save Profile</.button>
        </div>
      </div>
    </div>
    """
  end

  def mount(_params, _session, socket) do
    %{host: host} = URI.parse(Postland.my_actor_id())
    account = Postland.Accounts.solo_user()
    form = account |> User.profile_changeset(%{}) |> to_form()

    socket =
      socket
      |> assign(account: account, host: host, editing: false, form: form)
      |> allow_upload(:avatar,
        accept: ~w(.jpg .jpeg .png),
        progress: &handle_progress/3,
        auto_upload: true
      )

    {:ok, socket}
  end

  def handle_event("edit", _, socket) do
    {:noreply, assign(socket, :editing, true)}
  end

  def handle_event("validate", params, socket) do
    changeset = User.profile_changeset(socket.assigns.account, params)
    form = to_form(changeset)
    {:noreply, assign(socket, form: form)}
  end

  def handle_event("submit", %{"user" => params}, socket) do
    changeset = User.profile_changeset(socket.assigns.account, params)

    case Repo.update(changeset) do
      {:ok, account} ->
        form = account |> User.profile_changeset(%{}) |> to_form()
        Cachex.del(:main_cache, "actor:#{Postland.my_actor_id()}")
        {:noreply, assign(socket, account: account, editing: false, form: form)}

      {:error, changeset} ->
        form = to_form(changeset)

        {:noreply, socket |> put_flash(:error, "An error occurred.") |> assign(form: form)}
    end
  end

  def handle_event("avatar", _, socket) do
    # The actual upload is handled by auto-upload and the handle_progress callback
    {:noreply, socket}
  end

  def handle_progress(:avatar, entry, socket) do
    if entry.done? do
      uploaded_file =
        consume_uploaded_entry(socket, entry, fn meta ->
          Postland.Uploads.handle_upload(entry, meta)
        end)

      changeset = User.icon_changeset(socket.assigns.account, uploaded_file)

      case Repo.update(changeset) do
        {:ok, account} ->
          {:noreply, assign(socket, account: account)}

        {:error, _changeset} ->
          {:noreply, put_flash(socket, :error, "An error occurred while finishing upload.")}
      end
    else
      {:noreply, socket}
    end
  end
end