defmodule Ammoprices.Scraping.Retailers.TargetSportsUsaTest do
  use ExUnit.Case, async: true

  alias Ammoprices.Scraping.Retailers.TargetSportsUsa

  @fixture_path "test/fixtures/target_sports_usa/9mm.html"

  describe "retailer_slug/0" do
    test "returns target-sports-usa" do
      assert TargetSportsUsa.retailer_slug() == "target-sports-usa"
    end
  end

  describe "category_url/1" do
    test "maps 9mm-luger caliber to correct URL" do
      caliber = %{slug: "9mm-luger", category: "handgun"}
      assert TargetSportsUsa.category_url(caliber) == "/9mm-luger-ammo-c-51.aspx"
    end

    test "maps 300-blackout caliber to correct URL" do
      caliber = %{slug: "300-blackout", category: "rifle"}
      assert TargetSportsUsa.category_url(caliber) == "/300-aac-blackout-ammo-c-969.aspx"
    end

    test "returns nil for unmapped caliber" do
      caliber = %{slug: "unknown", category: "handgun"}
      assert TargetSportsUsa.category_url(caliber) == nil
    end
  end

  describe "parse_products/1" do
    setup do
      html = File.read!(@fixture_path)
      %{html: html}
    end

    test "extracts all products from HTML", %{html: html} do
      products = TargetSportsUsa.parse_products(html)
      assert length(products) == 4
    end

    test "extracts product title", %{html: html} do
      [first | _] = TargetSportsUsa.parse_products(html)
      assert first.title =~ "Federal Champion 9mm Ammo 115 Grain Full Metal Jacket"
    end

    test "extracts product URL", %{html: html} do
      [first | _] = TargetSportsUsa.parse_products(html)
      assert first.url == "/federal-champion-9mm-ammo-115-grain-fmj-wm5199-p-58432.aspx"
    end

    test "extracts price in cents", %{html: html} do
      [first | _] = TargetSportsUsa.parse_products(html)
      assert first.price_cents == 1275
    end

    test "extracts price per round in cents", %{html: html} do
      [first | _] = TargetSportsUsa.parse_products(html)
      assert first.price_per_round_cents == 26
    end

    test "extracts brand from h2 strong", %{html: html} do
      [first | _] = TargetSportsUsa.parse_products(html)
      assert first.brand == "Federal"
    end

    test "strips trailing Ammunition/Ammo from brand", %{html: html} do
      products = TargetSportsUsa.parse_products(html)
      # "Winchester Ammo" -> "Winchester"
      assert Enum.at(products, 1).brand == "Winchester"
      # "Tula Ammo" -> "Tula"
      assert Enum.at(products, 3).brand == "Tula"
    end

    test "extracts grain weight from title", %{html: html} do
      [first | _] = TargetSportsUsa.parse_products(html)
      assert first.grain_weight == 115
    end

    test "extracts round count from title", %{html: html} do
      products = TargetSportsUsa.parse_products(html)
      # Second product: "50 Round Box"
      assert Enum.at(products, 1).round_count == 50
    end

    test "marks in-stock products", %{html: html} do
      [first | _] = TargetSportsUsa.parse_products(html)
      assert first.in_stock == true
    end

    test "marks out-of-stock products", %{html: html} do
      products = TargetSportsUsa.parse_products(html)
      assert Enum.at(products, 3).in_stock == false
    end

    test "detects subsonic from title", %{html: html} do
      products = TargetSportsUsa.parse_products(html)
      # 3rd product has "Subsonic" in title
      assert Enum.at(products, 2).subsonic == true
    end

    test "non-subsonic products return false", %{html: html} do
      [first | _] = TargetSportsUsa.parse_products(html)
      assert first.subsonic == false
    end

    test "detects casing from title", %{html: html} do
      products = TargetSportsUsa.parse_products(html)
      # 4th product has "Steel Case" in title
      assert Enum.at(products, 3).casing == "steel"
    end

    test "returns nil casing when not detected", %{html: html} do
      [first | _] = TargetSportsUsa.parse_products(html)
      assert first.casing == nil
    end
  end
end