#!/usr/bin/env python3

from __future__ import annotations

import importlib.util
import sys
import tempfile
import unittest
from pathlib import Path
from unittest.mock import patch


RECEIVER_PATH = Path(__file__).with_name("receiver.py")
SPEC = importlib.util.spec_from_file_location("iphone_photo_receiver", RECEIVER_PATH)
receiver = importlib.util.module_from_spec(SPEC)
assert SPEC.loader is not None
sys.modules[SPEC.name] = receiver
SPEC.loader.exec_module(receiver)


class ReceiverTests(unittest.TestCase):
    def tearDown(self) -> None:
        batch = getattr(self, "batch", None)
        if batch is not None and batch.timer is not None:
            batch.timer.cancel()

    def test_load_env_file_does_not_override_existing_environment(self) -> None:
        with tempfile.NamedTemporaryFile(mode="w", encoding="utf-8") as env_file, \
            patch.dict(receiver.os.environ, {"PHOTO_INBOX_TOKEN": "existing"}, clear=False):
            env_file.write("PHOTO_INBOX_TOKEN=from-file\n")
            env_file.write('PHOTO_INBOX_DEBOUNCE_SECONDS="5"\n')
            env_file.flush()

            receiver.load_env_file(Path(env_file.name))

            self.assertEqual(receiver.os.environ["PHOTO_INBOX_TOKEN"], "existing")
            self.assertEqual(receiver.os.environ["PHOTO_INBOX_DEBOUNCE_SECONDS"], "5")

    def test_batch_add_accumulates_paths(self) -> None:
        config = receiver.Config(Path("/tmp"), clipboard=True, notify=False, reveal=False)
        manager = receiver.BatchManager(debounce_seconds=60, config=config)

        count1, paths1 = manager.add(Path("/tmp/one.jpg"))
        count2, paths2 = manager.add(Path("/tmp/two.jpg"))

        self.batch = manager.batch
        self.assertEqual(count1, 1)
        self.assertEqual(paths1, [Path("/tmp/one.jpg")])
        self.assertEqual(count2, 2)
        self.assertEqual(paths2, [Path("/tmp/one.jpg"), Path("/tmp/two.jpg")])

    def test_files_clipboard_passes_all_paths_to_native_helper(self) -> None:
        paths = [Path("/tmp/one.jpg"), Path("/tmp/two.jpg")]

        with tempfile.NamedTemporaryFile() as helper:
            helper_path = Path(helper.name)
            with patch.object(receiver, "COPY_FILES_HELPER_BIN", Path("/tmp/missing-helper-bin")), \
                patch.object(receiver, "COPY_FILES_HELPER", helper_path), \
                patch.object(receiver, "run_macos_action", return_value=True) as run_action:
                self.assertTrue(receiver.copy_files_to_clipboard(paths))

            run_action.assert_called_once_with([
                str(helper_path),
                "/tmp/one.jpg",
                "/tmp/two.jpg",
            ])

    def test_build_config_uses_boolean_clipboard(self) -> None:
        args = type("Args", (), {
            "output_dir": Path("/tmp/photos"),
            "clipboard": False,
            "notify": True,
            "reveal": False,
        })()

        config = receiver.build_config(args)

        self.assertEqual(config.output_dir, Path("/tmp/photos").resolve())
        self.assertFalse(config.clipboard)
        self.assertTrue(config.notify)
        self.assertFalse(config.reveal)


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