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

  alias Ammoprices.Scraping.Retailers.SgAmmo

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

  describe "retailer_slug/0" do
    test "returns sgammo" do
      assert SgAmmo.retailer_slug() == "sgammo"
    end
  end

  describe "category_url/1" do
    test "maps 9mm-luger caliber to correct URL" do
      caliber = %{slug: "9mm-luger", category: "handgun"}
      assert SgAmmo.category_url(caliber) == "/catalog/pistol-ammo-for-sale/9mm-luger-ammo"
    end

    test "returns nil for unmapped caliber" do
      caliber = %{slug: "unknown", category: "handgun"}
      assert SgAmmo.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 = SgAmmo.parse_products(html)
      assert length(products) == 3
    end

    test "extracts product title", %{html: html} do
      [first | _] = SgAmmo.parse_products(html)
      assert first.title =~ "50 Round Box - 9mm Luger 115 Grain FMJ Ammo by Magtech"
    end

    test "extracts product URL", %{html: html} do
      [first | _] = SgAmmo.parse_products(html)
      assert first.url =~ "sgammo.com/product/9mm-luger-ammo/"
    end

    test "extracts price in cents", %{html: html} do
      [first | _] = SgAmmo.parse_products(html)
      assert first.price_cents == 1395
    end

    test "extracts price per round in cents", %{html: html} do
      [first | _] = SgAmmo.parse_products(html)
      assert first.price_per_round_cents == 28
    end

    test "extracts round count from title", %{html: html} do
      [first | _] = SgAmmo.parse_products(html)
      assert first.round_count == 50
    end

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

    test "extracts brand from title", %{html: html} do
      [first | _] = SgAmmo.parse_products(html)
      assert first.brand == "Magtech"
    end

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