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

class TestPenTracker(unittest.TestCase):
    def setUp(self):
        self.temp_file = tempfile.NamedTemporaryFile(delete=False, suffix='.db')
        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")

    def test_pen_ink_history_records_changes(self):
        pen = Pen(Make="Pilot", Model="Metropolitan", Nib="F", Current_Ink="Blue")
        self.tracker.pens.append(pen)
        self.tracker.save_data()

        persisted = self.tracker.pens[0]
        history = self.tracker.get_ink_history(persisted.id)
        self.assertEqual(len(history), 1)
        self.assertEqual(history[0]['ink_name'], "Blue")

        persisted.Current_Ink = "N/A"
        self.tracker.save_data()

        history = self.tracker.get_ink_history(persisted.id)
        self.assertEqual(len(history), 2)
        self.assertEqual(history[-1]['ink_name'], "N/A")



class TestInkTracker(unittest.TestCase):
    def setUp(self):
        self.temp_file = tempfile.NamedTemporaryFile(delete=False, suffix='.db')
        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_save_and_load_ink(self):
        self.tracker.inks.append(Ink(Vendor='Waterman', Name='Intense Black', Color='Black', Notes='Good 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, 'Waterman')
        self.assertEqual(new_tracker.inks[0].Name, 'Intense Black')

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