#!/usr/bin/env python3

import importlib.util
import json
import pathlib
import unittest


_SCRIPT_PATH = pathlib.Path(__file__).with_name("chrome-tab-switcher.py")
_spec = importlib.util.spec_from_file_location("chrome_tab_switcher", _SCRIPT_PATH)
mod = importlib.util.module_from_spec(_spec)
assert _spec and _spec.loader
_spec.loader.exec_module(mod)


class ChromeTabSwitcherTest(unittest.TestCase):
    def test_parse_tabs_dict_payload(self) -> None:
        payload = {
            "windows": [
                {
                    "activeTabIndex": 1,
                    "tabs": [
                        {"title": "Home", "url": "https://example.com"},
                        {"title": "Docs", "url": "https://docs.example.com"},
                    ],
                }
            ]
        }

        entries = mod.parse_tabs(json.dumps(payload))
        self.assertEqual(2, len(entries))
        self.assertEqual("W0T0", entries[0].token)
        self.assertFalse(entries[0].active)
        self.assertEqual("W0T1", entries[1].token)
        self.assertTrue(entries[1].active)
        self.assertEqual("Docs", entries[0].window_active_title)

    def test_parse_tabs_list_payload_with_selected(self) -> None:
        payload = [
            {
                "selected": 1,
                "tabs": [
                    {"name": "First", "uri": "https://a.example"},
                    {"name": "Second", "uri": "https://b.example"},
                ],
            }
        ]

        entries = mod.parse_tabs(json.dumps(payload))
        self.assertEqual(2, len(entries))
        self.assertTrue(entries[0].active)
        self.assertFalse(entries[1].active)

    def test_parse_menu_selection(self) -> None:
        token = mod.parse_menu_selection("S1W3T8\t[session w4 t9] Example")
        self.assertEqual("S1W3T8", token)

    def test_build_switch_commands(self) -> None:
        cmds = mod.build_switch_commands("0x01a00002", 3)
        self.assertEqual(["wmctrl", "-ia", "0x01a00002"], cmds[0])
        self.assertEqual(["xdotool", "key", "--clearmodifiers", "ctrl+1"], cmds[1])
        self.assertEqual(["xdotool", "key", "--clearmodifiers", "--repeat", "3", "ctrl+Tab"], cmds[2])

    def test_discover_active_session_dirs(self) -> None:
        ps_output = "\n".join(
            [
                '/opt/google/chrome/chrome --type=browser --user-data-dir="/tmp/chrome-a"',
                '/usr/bin/chromium --type=browser --user-data-dir=/tmp/chrome-b',
                '/opt/google/chrome/chrome --type=gpu-process',
            ]
        )
        dirs = mod.discover_active_session_dirs(ps_output, "/home/test")
        self.assertEqual(["/tmp/chrome-a", "/tmp/chrome-b"], dirs)

    def test_resolve_window_id_prefers_title_match(self) -> None:
        entry = mod.TabEntry(
            token="S0W1T2",
            window_index=1,
            tab_index=2,
            title="Target Tab",
            url="https://example.com",
            active=False,
            session_name="Profile 2",
            window_active_title="Sprint Board",
        )
        windows = [
            mod.ChromeWindow("0x100", "google-chrome.Google-chrome", "Inbox - Google Chrome"),
            mod.ChromeWindow("0x200", "google-chrome.Google-chrome", "Sprint Board - Google Chrome"),
        ]
        self.assertEqual("0x200", mod.resolve_window_id(entry, windows))

    def test_resolve_window_id_falls_back_to_index(self) -> None:
        entry = mod.TabEntry(
            token="S0W1T2",
            window_index=1,
            tab_index=2,
            title="Target Tab",
            url="https://example.com",
            active=False,
            window_active_title="",
        )
        windows = [
            mod.ChromeWindow("0x100", "google-chrome.Google-chrome", "Inbox - Google Chrome"),
            mod.ChromeWindow("0x200", "google-chrome.Google-chrome", "Sprint Board - Google Chrome"),
        ]
        self.assertEqual("0x200", mod.resolve_window_id(entry, windows))


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