"""
pytest configuration file
"""
import pytest
import os
import tempfile
from unittest.mock import Mock, patch
from flask import Flask

# Add the parent directory to Python path so we can import the app
import sys
sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))

from app import create_app
from config import TestingConfig


@pytest.fixture
def app():
    """Create a test Flask application."""
    app = create_app(TestingConfig())
    
    # Create a temporary directory for file uploads during testing
    with tempfile.TemporaryDirectory() as temp_dir:
        app.config['UPLOAD_FOLDER'] = temp_dir
        app.config['TESTING'] = True
        yield app


@pytest.fixture
def client(app):
    """Create a test client."""
    return app.test_client()


@pytest.fixture  
def mock_tokenizer():
    """Create a mock tokenizer for testing."""
    tokenizer = Mock()
    tokenizer.tokenize.return_value = ['Hello', 'world', '!']
    tokenizer.vocab_size = 50257
    tokenizer.model_max_length = 1024
    tokenizer.__class__.__name__ = 'MockTokenizer'
    
    # Mock special tokens
    tokenizer.pad_token = '<pad>'
    tokenizer.eos_token = '</s>'
    tokenizer.unk_token = '<unk>'
    tokenizer.bos_token = '<s>'
    
    return tokenizer


@pytest.fixture
def sample_text():
    """Sample text for testing."""
    return "Hello world! This is a test."


@pytest.fixture
def sample_tokens():
    """Sample tokens for testing."""
    return ['Hello', ' world', '!', ' This', ' is', ' a', ' test', '.']


@pytest.fixture
def temp_file():
    """Create a temporary file for testing."""
    with tempfile.NamedTemporaryFile(mode='w', suffix='.txt', delete=False) as f:
        f.write("Hello world! This is a test file.")
        temp_path = f.name
    
    yield temp_path
    
    # Cleanup
    if os.path.exists(temp_path):
        os.unlink(temp_path)