# frozen_string_literal: true

require "test_helper"

class ImageTest < Minitest::Test
  include EzdocTestHelpers

  def setup
    @png_path = File.expand_path("fixtures/test.png", __dir__)
    @jpeg_path = File.expand_path("fixtures/test.jpg", __dir__)
  end

  def test_image_in_paragraph
    xml = create_doc_and_read_xml do |doc|
      doc.p do
        doc.image @png_path
      end
    end

    assert_includes xml, "<w:drawing>"
    assert_includes xml, "<wp:inline"
    assert_includes xml, "<pic:pic>"
    assert_includes xml, 'r:embed="rId'
  end

  def test_image_in_table_cell
    xml = create_doc_and_read_xml do |doc|
      doc.table do
        doc.tr do
          doc.td do
            doc.image @png_path
          end
        end
      end
    end

    assert_includes xml, "<w:tc>"
    assert_includes xml, "<w:drawing>"
  end

  def test_image_in_list_item
    xml = create_doc_and_read_xml do |doc|
      doc.ul do
        doc.li do
          doc.image @png_path
        end
      end
    end

    assert_includes xml, "<w:numPr>"
    assert_includes xml, "<w:drawing>"
  end

  def test_image_with_explicit_dimensions_inches
    xml = create_doc_and_read_xml do |doc|
      doc.p do
        doc.image @png_path, width: "2in", height: "1in"
      end
    end

    # 2 inches = 1828800 EMUs
    assert_includes xml, 'cx="1828800"'
    # 1 inch = 914400 EMUs
    assert_includes xml, 'cy="914400"'
  end

  def test_image_with_explicit_dimensions_cm
    xml = create_doc_and_read_xml do |doc|
      doc.p do
        doc.image @png_path, width: "5cm", height: "3cm"
      end
    end

    # 5 cm = 1800000 EMUs
    assert_includes xml, 'cx="1800000"'
    # 3 cm = 1080000 EMUs
    assert_includes xml, 'cy="1080000"'
  end

  def test_image_file_embedded_in_docx
    files = nil
    Tempfile.create(["test", ".docx"]) do |file|
      Ezdoc::Document.create(file.path) do |doc|
        doc.p { doc.image @png_path }
      end
      Zip::File.open(file.path) do |zip|
        files = zip.entries.map(&:name)
      end
    end

    assert(files.any? { |f| f.start_with?("word/media/image") })
  end

  def test_image_relationships_generated
    xml_files = create_doc_and_read_all_xml do |doc|
      doc.p { doc.image @png_path }
    end

    rels = xml_files["word/_rels/document.xml.rels"]
    assert_includes rels, "relationships/image"
    assert_includes rels, "media/image"
  end

  def test_image_content_type_registered
    xml_files = create_doc_and_read_all_xml do |doc|
      doc.p { doc.image @png_path }
    end

    content_types = xml_files["[Content_Types].xml"]
    assert_includes content_types, 'Extension="png"'
    assert_includes content_types, "image/png"
  end

  def test_jpeg_content_type_registered
    xml_files = create_doc_and_read_all_xml do |doc|
      doc.p { doc.image @jpeg_path }
    end

    content_types = xml_files["[Content_Types].xml"]
    assert_includes content_types, 'Extension="jpeg"'
    assert_includes content_types, "image/jpeg"
  end

  def test_invalid_image_path_raises_error
    assert_raises(ArgumentError) do
      Tempfile.create(["test", ".docx"]) do |file|
        Ezdoc::Document.create(file.path) do |doc|
          doc.p { doc.image "/nonexistent/image.png" }
        end
      end
    end
  end

  def test_unsupported_format_raises_error
    Tempfile.create(["test", ".gif"]) do |gif_file|
      gif_file.write("GIF89a")
      gif_file.flush

      assert_raises(ArgumentError) do
        Tempfile.create(["test", ".docx"]) do |docx_file|
          Ezdoc::Document.create(docx_file.path) do |doc|
            doc.p { doc.image gif_file.path }
          end
        end
      end
    end
  end

  def test_same_image_used_multiple_times_deduplication
    files = nil
    Tempfile.create(["test", ".docx"]) do |file|
      Ezdoc::Document.create(file.path) do |doc|
        doc.p { doc.image @png_path }
        doc.p { doc.image @png_path }
        doc.p { doc.image @png_path }
      end
      Zip::File.open(file.path) do |zip|
        files = zip.entries.map(&:name).select { |f| f.start_with?("word/media/") }
      end
    end

    # Should only have one image file despite being used 3 times
    assert_equal 1, files.size
  end

  def test_multiple_different_images
    files = nil
    Tempfile.create(["test", ".docx"]) do |file|
      Ezdoc::Document.create(file.path) do |doc|
        doc.p { doc.image @png_path }
        doc.p { doc.image @jpeg_path }
      end
      Zip::File.open(file.path) do |zip|
        files = zip.entries.map(&:name).select { |f| f.start_with?("word/media/") }
      end
    end

    assert_equal 2, files.size
  end

  def test_image_with_text_in_same_paragraph
    xml = create_doc_and_read_xml do |doc|
      doc.p do
        doc.text "Before image: "
        doc.image @png_path
        doc.text " After image"
      end
    end

    assert_includes xml, "Before image: "
    assert_includes xml, "After image"
    assert_includes xml, "<w:drawing>"
  end

  def test_image_dimensions_read_from_file
    xml = create_doc_and_read_xml do |doc|
      doc.p { doc.image @png_path }
    end

    # 200x200 pixels at 96 DPI = 200 * (914400 / 96) = 1905000 EMUs
    assert_includes xml, 'cx="1905000"'
    assert_includes xml, 'cy="1905000"'
  end
end