import tempfile
import unittest

import gradio as gr
from gradio import flagging


class TestDefaultFlagging(unittest.TestCase):
    def test_default_flagging_handler(self):
        with tempfile.TemporaryDirectory() as tmpdirname:
            io = gr.Interface(lambda x: x, "text", "text", flagging_dir=tmpdirname)
            io.launch(prevent_thread_lock=True)
            row_count = io.flagging_callback.flag(io, ["test"], ["test"])
            self.assertEqual(row_count, 1)  # 2 rows written including header
            row_count = io.flagging_callback.flag(io, ["test"], ["test"])
            self.assertEqual(row_count, 2)  # 3 rows written including header
        io.close()


class TestSimpleFlagging(unittest.TestCase):
    def test_simple_csv_flagging_handler(self):
        with tempfile.TemporaryDirectory() as tmpdirname:
            io = gr.Interface(
                lambda x: x,
                "text",
                "text",
                flagging_dir=tmpdirname,
                flagging_callback=flagging.SimpleCSVLogger(),
            )
            io.launch(prevent_thread_lock=True)
            row_count = io.flagging_callback.flag(io, ["test"], ["test"])
            self.assertEqual(row_count, 0)  # no header
            row_count = io.flagging_callback.flag(io, ["test"], ["test"])
            self.assertEqual(row_count, 1)  # no header
        io.close()

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