import pytest
from app.processing import process_text_input, process_file

def test_process_text_input_success(pipeline):
    """
    Test processing of valid text input.
    """
    input_text = "This is a sample text for flashcard extraction."
    output_format = "JSON"
    expected_output = '{"flashcards": []}'

    result = process_text_input(input_text, output_format, pipeline)
    assert result == expected_output
    pipeline.generate_flashcards.assert_called_once()

def test_process_text_input_empty(pipeline):
    """
    Test processing of empty text input.
    """
    input_text = "   "
    output_format = "JSON"

    with pytest.raises(ValueError) as excinfo:
        process_text_input(input_text, output_format, pipeline)
    assert "No text provided." in str(excinfo.value)

def test_process_file_unsupported_type(pipeline, tmp_path):
    """
    Test processing of an unsupported file type.
    """
    # Create a dummy unsupported file
    dummy_file = tmp_path / "dummy.unsupported"
    dummy_file.write_text("Unsupported content")

    with pytest.raises(ValueError) as excinfo:
        process_file(dummy_file, "JSON", pipeline)
    assert "Unsupported file type." in str(excinfo.value)

def test_process_file_pdf(pipeline, tmp_path, mocker):
    """
    Test processing of a PDF file.
    """
    # Mock the process_pdf function
    mocker.patch('app.processing.process_pdf', return_value="Extracted PDF text.")

    # Create a dummy PDF file
    dummy_file = tmp_path / "test.pdf"
    dummy_file.write_text("PDF content")

    expected_output = '{"flashcards": []}'

    result = process_file(dummy_file, "JSON", pipeline)
    assert result == expected_output
    pipeline.generate_flashcards.assert_called_once()

def test_process_file_txt(pipeline, tmp_path, mocker):
    """
    Test processing of a TXT file.
    """
    # Mock the read_text_file function
    mocker.patch('app.processing.read_text_file', return_value="Extracted TXT text.")

    # Create a dummy TXT file
    dummy_file = tmp_path / "test.txt"
    dummy_file.write_text("TXT content")

    expected_output = '{"flashcards": []}'

    result = process_file(dummy_file, "JSON", pipeline)
    assert result == expected_output
    pipeline.generate_flashcards.assert_called_once()