import os
import sys
from pathlib import Path
import pytest
from unittest.mock import patch, mock_open, MagicMock
sys.path.append(str(Path(__file__).parent.parent))
from application_handler import ApplicationHandler


@pytest.fixture
def temp_applications_file(tmp_path):
    data_dir = tmp_path / "data"
    data_dir.mkdir()
    file = data_dir / "applications.json"
    file.write_text("{}", encoding="utf-8")
    return file

class DummyStateManager:
    email = None
    password = None
    logged_in = False
    def set_autopilot(self, enabled): pass
    def is_autopilot_enabled(self): return False



@patch("matplotlib.pyplot.savefig")
def test_generate_error_rate_plot_no_data(mock_savefig, temp_applications_file):
    class DummyContext: pass
    handler = ApplicationHandler(DummyContext(), DummyStateManager(), applications_file=temp_applications_file)
    plot_path, summary = handler._generate_error_rate_plot()
    assert plot_path is None or plot_path == ""
    assert summary == ""



from unittest.mock import patch

@patch("matplotlib.figure.Figure.savefig")
def test_generate_error_rate_plot_with_data(mock_savefig, temp_applications_file):
    class DummyContext: pass
    handler = ApplicationHandler(DummyContext(), DummyStateManager(), applications_file=temp_applications_file)
    # Write valid data to the temp applications file
    temp_applications_file.write_text('''
    {
        "1": {"timestamp": "2025-12-25T12:00:00", "company": "CompanyA", "success": true},
        "2": {"timestamp": "2025-12-26T12:00:00", "company": "CompanyB", "success": false}
    }
    ''', encoding="utf-8")
    plot_path, summary = handler._generate_error_rate_plot()
    assert plot_path is not None
    assert "Total attempts" in summary
    assert "Successes" in summary
    assert "Failures" in summary
    assert "Overall error rate" in summary
    mock_savefig.assert_called()