import unittest
import tempfile
import os
from pen_tracker.engine import PenTracker, Pen, InkTracker, Ink

class TestPenTracker(unittest.TestCase):
    def setUp(self):
        self.temp_file = tempfile.NamedTemporaryFile(delete=False, suffix='.csv')
        self.temp_file.close()
        self.tracker = PenTracker(self.temp_file.name)

    def tearDown(self):
        os.unlink(self.temp_file.name)

    def test_add_and_load_pen(self):
        pen = Pen(Make="Pilot", Model="Metropolitan", Nib="F")
        self.tracker.pens.append(pen)
        self.tracker.save_data()
        
        # Load in new tracker
        new_tracker = PenTracker(self.temp_file.name)
        self.assertEqual(len(new_tracker.pens), 1)
        self.assertEqual(new_tracker.pens[0].Make, "Pilot")
        self.assertEqual(new_tracker.pens[0].Model, "Metropolitan")

    def test_sorting(self):
        self.tracker.pens = [
            Pen(Make="Z", Model="A"),
            Pen(Make="A", Model="B")
        ]
        self.tracker.save_data()
        new_tracker = PenTracker(self.temp_file.name)
        self.assertEqual(new_tracker.pens[0].Make, "A")
        self.assertEqual(new_tracker.pens[1].Make, "Z")



class TestInkTracker(unittest.TestCase):
    def setUp(self):
        self.temp_file = tempfile.NamedTemporaryFile(delete=False, suffix='.csv')
        self.temp_file.close()
        self.tracker = InkTracker(self.temp_file.name)

    def tearDown(self):
        os.unlink(self.temp_file.name)

    def test_add_and_load_ink(self):
        ink = Ink(Vendor="Diamine", Name="Pumpkin", Color="Orange")
        self.tracker.inks.append(ink)
        self.tracker.save_data()

        new_tracker = InkTracker(self.temp_file.name)
        self.assertEqual(len(new_tracker.inks), 1)
        self.assertEqual(new_tracker.inks[0].Vendor, "Diamine")
        self.assertEqual(new_tracker.inks[0].Name, "Pumpkin")

    def test_sorting(self):
        self.tracker.inks = [
            Ink(Vendor="Z", Name="A"),
            Ink(Vendor="A", Name="B")
        ]
        self.tracker.save_data()
        new_tracker = InkTracker(self.temp_file.name)
        self.assertEqual(new_tracker.inks[0].Vendor, "A")
        self.assertEqual(new_tracker.inks[1].Vendor, "Z")

    def test_loads_row_with_extra_trailing_field(self):
        csv_content = (
            "Vendor,Name,Color,Purchased,Size,Notes\n"
            "Waterman,Intense Black,Black,,\"Cartridge,International Short\",\n"
            "Pilot,Black Cartridge,Black,2024-01-01,Cartridge,Good ink\n"
        )
        with open(self.temp_file.name, 'w', encoding='utf-8') as f:
            f.write(csv_content)

        new_tracker = InkTracker(self.temp_file.name)
        self.assertEqual(len(new_tracker.inks), 2)
        self.assertEqual(new_tracker.inks[0].Vendor, "Pilot")
        self.assertEqual(new_tracker.inks[1].Vendor, "Waterman")
        self.assertEqual(new_tracker.inks[1].Notes, "N/A")

if __name__ == '__main__':
    unittest.main()