defmodule BerrypodWeb.Admin.PagesTest do
  use BerrypodWeb.ConnCase, async: false

  import Phoenix.LiveViewTest
  import Berrypod.AccountsFixtures

  alias Berrypod.Pages
  alias Berrypod.Pages.PageCache

  setup do
    PageCache.invalidate_all()
    user = user_fixture()
    %{user: user}
  end

  describe "unauthenticated" do
    test "redirects to login", %{conn: conn} do
      {:error, redirect} = live(conn, ~p"/admin/pages")
      assert {:redirect, %{to: path}} = redirect
      assert path == ~p"/users/log-in"
    end
  end

  describe "page list" do
    setup %{conn: conn, user: user} do
      %{conn: log_in_user(conn, user)}
    end

    test "renders page list with groups", %{conn: conn} do
      {:ok, _view, html} = live(conn, ~p"/admin/pages")

      assert html =~ "Pages"
      assert html =~ "Marketing"
      assert html =~ "Legal"
      assert html =~ "Shop"
      assert html =~ "Orders"
      assert html =~ "System"
    end

    test "shows all 14 pages", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages")

      assert has_element?(view, ".page-card-title", "Home page")
      assert has_element?(view, ".page-card-title", "About")
      assert has_element?(view, ".page-card-title", "Contact")
      assert has_element?(view, ".page-card-title", "Product page")
      assert has_element?(view, ".page-card-title", "Error")
    end

    test "shows block count per page", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages")

      # Home has 4 default blocks
      assert has_element?(view, ".page-card-meta", "4 blocks")
    end

    test "links to editor", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages")

      view
      |> element("a[href='/admin/pages/home']")
      |> render_click()

      assert_redirect(view, ~p"/admin/pages/home")
    end
  end

  describe "page editor" do
    setup %{conn: conn, user: user} do
      %{conn: log_in_user(conn, user)}
    end

    test "renders editor with blocks", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      assert has_element?(view, ".block-card-name", "Hero banner")
      assert has_element?(view, ".block-card-name", "Category navigation")
      assert has_element?(view, ".block-card-name", "Featured products")
      assert has_element?(view, ".block-card-name", "Image + text")
    end

    test "shows position numbers", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      assert has_element?(view, ".block-card-position", "1")
      assert has_element?(view, ".block-card-position", "4")
    end

    test "shows back link", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      assert has_element?(view, "a[href='/admin/pages']", "Pages")
    end

    test "move block up reorders blocks", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      # Get the second block (category_nav) and move it up
      page = Pages.get_page("home")
      second_block = Enum.at(page.blocks, 1)

      render_click(view, "move_up", %{"id" => second_block["id"]})

      # The ARIA live region announces the move
      assert has_element?(view, "[aria-live='polite']", "Category navigation moved to position 1")
    end

    test "move block down reorders blocks", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      page = Pages.get_page("home")
      first_block = Enum.at(page.blocks, 0)

      render_click(view, "move_down", %{"id" => first_block["id"]})

      # Hero banner should now be at position 2
      assert has_element?(view, "[aria-live='polite']", "Hero banner moved to position 2")
    end

    test "move up disabled for first block", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      page = Pages.get_page("home")
      first_block = Enum.at(page.blocks, 0)

      assert has_element?(
               view,
               "button[phx-value-id='#{first_block["id"]}'][phx-click='move_up'][disabled]"
             )
    end

    test "move down disabled for last block", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      page = Pages.get_page("home")
      last_block = Enum.at(page.blocks, -1)

      assert has_element?(
               view,
               "button[phx-value-id='#{last_block["id"]}'][phx-click='move_down'][disabled]"
             )
    end

    test "remove block", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      page = Pages.get_page("home")
      block = Enum.at(page.blocks, 1)

      render_click(view, "remove_block", %{"id" => block["id"]})

      refute has_element?(view, ".block-card-name", "Category navigation")
      assert has_element?(view, ".block-card-position", "3")
      refute has_element?(view, ".block-card-position", "4")
    end

    test "duplicate block", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      page = Pages.get_page("home")
      block = Enum.at(page.blocks, 0)

      render_click(view, "duplicate_block", %{"id" => block["id"]})

      # Should now have 5 blocks (position 5 exists)
      assert has_element?(view, ".block-card-position", "5")
      assert has_element?(view, "[aria-live='polite']", "Hero banner duplicated")
    end

    test "add block via picker", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      render_click(view, "show_picker")
      assert has_element?(view, ".block-picker")

      render_click(view, "add_block", %{"type" => "trust_badges"})

      assert has_element?(view, ".block-card-name", "Trust badges")
      refute has_element?(view, ".block-picker")
    end

    test "picker filter narrows results", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      render_click(view, "show_picker")
      render_keyup(view, "filter_picker", %{"value" => "hero"})

      assert has_element?(view, ".block-picker-item", "Hero banner")
      refute has_element?(view, ".block-picker-item", "Trust badges")
    end

    test "picker only shows blocks allowed on page", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      render_click(view, "show_picker")

      assert has_element?(view, ".block-picker-item", "Hero banner")
      refute has_element?(view, ".block-picker-item", "Product hero")
      refute has_element?(view, ".block-picker-item", "Cart items")
    end

    test "save persists blocks", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      page = Pages.get_page("home")
      block = Enum.at(page.blocks, 1)
      render_click(view, "remove_block", %{"id" => block["id"]})

      render_click(view, "save")

      assert render(view) =~ "Page saved"

      saved = Pages.get_page("home")
      assert length(saved.blocks) == 3
      types = Enum.map(saved.blocks, & &1["type"])
      refute "category_nav" in types
    end

    test "reset to defaults restores original blocks", %{conn: conn} do
      {:ok, _} =
        Pages.save_page("home", %{
          title: "Home page",
          blocks: [%{"id" => "blk_test", "type" => "hero", "settings" => %{}}]
        })

      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      # Should show only 1 block
      assert has_element?(view, ".block-card-position", "1")
      refute has_element?(view, ".block-card-position", "2")

      render_click(view, "reset_defaults")

      assert render(view) =~ "Page reset to defaults"
      # Should now have 4 default blocks
      assert has_element?(view, ".block-card-position", "4")
    end

    test "dirty flag appears after changes", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      refute has_element?(view, ".admin-badge-warning", "Unsaved changes")

      page = Pages.get_page("home")
      block = Enum.at(page.blocks, 0)
      render_click(view, "move_down", %{"id" => block["id"]})

      assert has_element?(view, ".admin-badge-warning", "Unsaved changes")
    end

    test "dirty flag clears after save", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      page = Pages.get_page("home")
      block = Enum.at(page.blocks, 0)
      render_click(view, "move_down", %{"id" => block["id"]})
      assert has_element?(view, ".admin-badge-warning")

      render_click(view, "save")
      refute has_element?(view, ".admin-badge-warning")
    end

    test "save button disabled when not dirty", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      assert has_element?(view, "button[disabled]", "Save")
    end
  end

  describe "page editor for page-specific pages" do
    setup %{conn: conn, user: user} do
      %{conn: log_in_user(conn, user)}
    end

    test "PDP editor shows PDP blocks", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/pdp")

      assert has_element?(view, ".block-card-name", "Breadcrumb")
      assert has_element?(view, ".block-card-name", "Product hero")
      assert has_element?(view, ".block-card-name", "Trust badges")
    end

    test "PDP picker shows PDP-specific blocks", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/pdp")

      render_click(view, "show_picker")

      assert has_element?(view, ".block-picker-item", "Product hero")
      assert has_element?(view, ".block-picker-item", "Hero banner")
      refute has_element?(view, ".block-picker-item", "Cart items")
    end

    test "error page editor works", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/error")

      assert has_element?(view, ".block-card-name", "Hero banner")
      assert has_element?(view, ".block-card-name", "Featured products")
    end
  end

  describe "block settings editing" do
    setup %{conn: conn, user: user} do
      %{conn: log_in_user(conn, user)}
    end

    test "edit button shown only for blocks with settings", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      page = Pages.get_page("home")
      hero = Enum.at(page.blocks, 0)
      category_nav = Enum.at(page.blocks, 1)

      # Hero has settings — edit button present
      assert has_element?(view, "#block-edit-btn-#{hero["id"]}")

      # Category nav has no settings — no edit button
      refute has_element?(view, "#block-edit-btn-#{category_nav["id"]}")
    end

    test "toggle expand shows settings form", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      page = Pages.get_page("home")
      hero = Enum.at(page.blocks, 0)

      # Settings panel not visible initially
      refute has_element?(view, "#block-settings-#{hero["id"]}")

      # Click edit to expand
      render_click(view, "toggle_expand", %{"id" => hero["id"]})

      # Settings panel now visible
      assert has_element?(view, "#block-settings-#{hero["id"]}")
      assert has_element?(view, "[aria-live='polite']", "Hero banner settings expanded")
    end

    test "toggle collapse hides settings form", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      page = Pages.get_page("home")
      hero = Enum.at(page.blocks, 0)

      # Expand then collapse
      render_click(view, "toggle_expand", %{"id" => hero["id"]})
      assert has_element?(view, "#block-settings-#{hero["id"]}")

      render_click(view, "toggle_expand", %{"id" => hero["id"]})
      refute has_element?(view, "#block-settings-#{hero["id"]}")
      assert has_element?(view, "[aria-live='polite']", "Hero banner settings collapsed")
    end

    test "aria-expanded reflects toggle state", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      page = Pages.get_page("home")
      hero = Enum.at(page.blocks, 0)

      assert has_element?(view, "#block-edit-btn-#{hero["id"]}[aria-expanded='false']")

      render_click(view, "toggle_expand", %{"id" => hero["id"]})

      assert has_element?(view, "#block-edit-btn-#{hero["id"]}[aria-expanded='true']")
    end

    test "settings form renders fields from schema", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      page = Pages.get_page("home")
      hero = Enum.at(page.blocks, 0)

      render_click(view, "toggle_expand", %{"id" => hero["id"]})

      # Hero has text fields: title, description, cta_text, etc.
      assert has_element?(view, "#block-#{hero["id"]}-title")
      assert has_element?(view, "#block-#{hero["id"]}-description")
      assert has_element?(view, "#block-#{hero["id"]}-cta_text")
      # And a select field: variant
      assert has_element?(view, "#block-#{hero["id"]}-variant")
    end

    test "editing settings updates working state and sets dirty", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      page = Pages.get_page("home")
      hero = Enum.at(page.blocks, 0)

      render_click(view, "toggle_expand", %{"id" => hero["id"]})

      # Edit the title
      render_change(view, "update_block_settings", %{
        "block_id" => hero["id"],
        "block_settings" => %{"title" => "New hero title"}
      })

      # Dirty flag should appear
      assert has_element?(view, ".admin-badge-warning", "Unsaved changes")
    end

    test "edited settings persist after save", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      page = Pages.get_page("home")
      hero = Enum.at(page.blocks, 0)

      render_click(view, "toggle_expand", %{"id" => hero["id"]})

      render_change(view, "update_block_settings", %{
        "block_id" => hero["id"],
        "block_settings" => %{"title" => "Updated title", "description" => "Updated desc"}
      })

      render_click(view, "save")

      saved = Pages.get_page("home")
      saved_hero = Enum.find(saved.blocks, &(&1["type"] == "hero"))
      assert saved_hero["settings"]["title"] == "Updated title"
      assert saved_hero["settings"]["description"] == "Updated desc"
    end

    test "number fields are coerced to integers", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      page = Pages.get_page("home")
      featured = Enum.find(page.blocks, &(&1["type"] == "featured_products"))

      render_click(view, "toggle_expand", %{"id" => featured["id"]})

      render_change(view, "update_block_settings", %{
        "block_id" => featured["id"],
        "block_settings" => %{"product_count" => "4"}
      })

      render_click(view, "save")

      saved = Pages.get_page("home")
      saved_featured = Enum.find(saved.blocks, &(&1["type"] == "featured_products"))
      assert saved_featured["settings"]["product_count"] == 4
    end

    test "select fields render with options", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      page = Pages.get_page("home")
      hero = Enum.at(page.blocks, 0)

      render_click(view, "toggle_expand", %{"id" => hero["id"]})

      html = render(view)
      # Variant select should have the expected options
      assert html =~ "default"
      assert html =~ "sunken"
    end

    test "multiple blocks can be expanded simultaneously", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      page = Pages.get_page("home")
      hero = Enum.at(page.blocks, 0)
      featured = Enum.find(page.blocks, &(&1["type"] == "featured_products"))

      render_click(view, "toggle_expand", %{"id" => hero["id"]})
      render_click(view, "toggle_expand", %{"id" => featured["id"]})

      assert has_element?(view, "#block-settings-#{hero["id"]}")
      assert has_element?(view, "#block-settings-#{featured["id"]}")
    end

    test "expanded card has expanded class", %{conn: conn} do
      {:ok, view, _html} = live(conn, ~p"/admin/pages/home")

      page = Pages.get_page("home")
      hero = Enum.at(page.blocks, 0)

      refute has_element?(view, "#block-#{hero["id"]}.block-card-expanded")

      render_click(view, "toggle_expand", %{"id" => hero["id"]})

      assert has_element?(view, "#block-#{hero["id"]}.block-card-expanded")
    end
  end
end