"""Unit tests for the BrowserCLI Python API (BrowserCLI, Tab, Group).

These tests mock `send_command` so no live browser connection is required.
"""
import pytest
from unittest.mock import MagicMock, patch, call

from browser_cli import BrowserCLI, Tab, Group
from browser_cli.client import BrowserNotConnected


# ── Helpers ───────────────────────────────────────────────────────────────────

TAB_DATA = {
    "id": 10,
    "windowId": 1,
    "active": True,
    "title": "Example",
    "url": "https://example.com",
    "groupId": None,
}

GROUP_DATA = {
    "id": 42,
    "title": "Work",
    "color": "blue",
    "collapsed": False,
    "tabCount": 3,
}


@pytest.fixture()
def mock_send():
    """Patch send_command for the duration of one test.

    BrowserCLI._cmd calls the `send_command` name that was imported into
    browser_cli/__init__.py, so we must patch it there, not in the client module.
    """
    with patch("browser_cli.send_command") as m:
        yield m


@pytest.fixture()
def b(mock_send):
    """A BrowserCLI instance with send_command mocked."""
    return BrowserCLI()


@pytest.fixture()
def b_profile(mock_send):
    """A BrowserCLI instance targeting a specific profile."""
    return BrowserCLI(browser="brave")


# ── BrowserCLI construction ───────────────────────────────────────────────────

class TestBrowserCLIInit:
    def test_default_browser_is_none(self):
        b = BrowserCLI()
        assert b._browser is None

    def test_named_browser_stored(self):
        b = BrowserCLI(browser="chrome")
        assert b._browser == "chrome"


# ── Internal factories ────────────────────────────────────────────────────────

class TestMakeTab:
    def test_all_fields(self, b):
        tab = b._make_tab(TAB_DATA)
        assert tab.id == 10
        assert tab.window_id == 1
        assert tab.active is True
        assert tab.title == "Example"
        assert tab.url == "https://example.com"
        assert tab.group_id is None

    def test_bound_to_browser(self, b):
        tab = b._make_tab(TAB_DATA)
        assert tab._browser is b

    def test_missing_optional_fields_use_defaults(self, b):
        tab = b._make_tab({"id": 1})
        assert tab.window_id == 0
        assert tab.active is False
        assert tab.title == ""
        assert tab.url == ""
        assert tab.group_id is None

    def test_group_id_set(self, b):
        tab = b._make_tab({**TAB_DATA, "groupId": 99})
        assert tab.group_id == 99


class TestMakeGroup:
    def test_all_fields(self, b):
        group = b._make_group(GROUP_DATA)
        assert group.id == 42
        assert group.title == "Work"
        assert group.color == "blue"
        assert group.collapsed is False
        assert group.tab_count == 3

    def test_bound_to_browser(self, b):
        group = b._make_group(GROUP_DATA)
        assert group._browser is b

    def test_missing_optional_fields_use_defaults(self, b):
        group = b._make_group({"id": 5})
        assert group.title == ""
        assert group.color == ""
        assert group.collapsed is False
        assert group.tab_count == 0


# ── Navigation ────────────────────────────────────────────────────────────────

class TestNavigation:
    def test_open(self, b, mock_send):
        b.open("https://example.com")
        mock_send.assert_called_once_with(
            "navigate.open",
            {"url": "https://example.com", "background": False, "window": None, "group": None},
            profile=None,
        )

    def test_open_background(self, b, mock_send):
        b.open("https://example.com", background=True)
        args = mock_send.call_args[0]
        assert args[1]["background"] is True

    def test_open_with_group(self, b, mock_send):
        b.open("https://x.com", group="Work")
        assert mock_send.call_args[0][1]["group"] == "Work"

    def test_reload(self, b, mock_send):
        b.reload(tab_id=5)
        mock_send.assert_called_once_with("navigate.reload", {"tabId": 5}, profile=None)

    def test_hard_reload(self, b, mock_send):
        b.hard_reload(tab_id=7)
        mock_send.assert_called_once_with("navigate.hard_reload", {"tabId": 7}, profile=None)

    def test_back(self, b, mock_send):
        b.back(tab_id=3)
        mock_send.assert_called_once_with("navigate.back", {"tabId": 3}, profile=None)

    def test_forward(self, b, mock_send):
        b.forward(tab_id=3)
        mock_send.assert_called_once_with("navigate.forward", {"tabId": 3}, profile=None)

    def test_focus_url(self, b, mock_send):
        b.focus_url("github.com")
        mock_send.assert_called_once_with("navigate.focus", {"pattern": "github.com"}, profile=None)

    def test_profile_forwarded(self, b_profile, mock_send):
        b_profile.reload()
        mock_send.assert_called_once_with("navigate.reload", {"tabId": None}, profile="brave")


# ── Search ────────────────────────────────────────────────────────────────────

class TestSearch:
    def test_known_engine_builds_url(self, b, mock_send):
        b.search("google", "python asyncio")
        call_args = mock_send.call_args[0]
        assert call_args[0] == "navigate.open"
        assert "python+asyncio" in call_args[1]["url"] or "python%20asyncio" in call_args[1]["url"] or "python+asyncio" in call_args[1]["url"]

    def test_unknown_engine_raises(self, b):
        with pytest.raises(ValueError, match="Unknown search engine"):
            b.search("nonexistent", "query")

    def test_search_alias_ddg(self, b, mock_send):
        b.search("ddg", "hello")
        url = mock_send.call_args[0][1]["url"]
        assert "duckduckgo.com" in url

    def test_search_background(self, b, mock_send):
        b.search("bing", "test", background=True)
        assert mock_send.call_args[0][1]["background"] is True


# ── Tabs ──────────────────────────────────────────────────────────────────────

class TestTabs:
    def test_tabs_list_returns_tab_objects(self, b, mock_send):
        mock_send.return_value = [TAB_DATA]
        tabs = b.tabs_list()
        assert len(tabs) == 1
        assert isinstance(tabs[0], Tab)
        assert tabs[0].id == 10

    def test_tabs_list_empty(self, b, mock_send):
        mock_send.return_value = []
        assert b.tabs_list() == []

    def test_tabs_list_none_response(self, b, mock_send):
        mock_send.return_value = None
        assert b.tabs_list() == []

    def test_tabs_close_returns_count(self, b, mock_send):
        mock_send.return_value = {"closed": 3}
        assert b.tabs_close() == 3

    def test_tabs_close_non_dict_response(self, b, mock_send):
        mock_send.return_value = None
        assert b.tabs_close() == 1

    def test_tabs_close_by_id(self, b, mock_send):
        mock_send.return_value = {"closed": 1}
        b.tabs_close(tab_id=10)
        mock_send.assert_called_once_with(
            "tabs.close",
            {"tabId": 10, "inactive": False, "duplicates": False},
            profile=None,
        )

    def test_tabs_move(self, b, mock_send):
        b.tabs_move(10, forward=True)
        mock_send.assert_called_once_with(
            "tabs.move",
            {"tabId": 10, "forward": True, "backward": False, "groupId": None, "windowId": None, "index": None},
            profile=None,
        )

    def test_tabs_active(self, b, mock_send):
        b.tabs_active(10)
        mock_send.assert_called_once_with("tabs.active", {"tabId": 10}, profile=None)

    def test_tabs_filter(self, b, mock_send):
        mock_send.return_value = [TAB_DATA]
        tabs = b.tabs_filter("example")
        assert isinstance(tabs[0], Tab)

    def test_tabs_filter_none(self, b, mock_send):
        mock_send.return_value = None
        assert b.tabs_filter("x") == []

    def test_tabs_count(self, b, mock_send):
        mock_send.return_value = 5
        assert b.tabs_count() == 5

    def test_tabs_query(self, b, mock_send):
        mock_send.return_value = [TAB_DATA]
        result = b.tabs_query("example")
        assert isinstance(result[0], Tab)

    def test_tabs_html(self, b, mock_send):
        mock_send.return_value = "<html></html>"
        assert b.tabs_html(10) == "<html></html>"

    def test_tabs_html_none(self, b, mock_send):
        mock_send.return_value = None
        assert b.tabs_html() == ""

    def test_tabs_dedupe(self, b, mock_send):
        mock_send.return_value = {"closed": 2}
        assert b.tabs_dedupe() == 2

    def test_tabs_dedupe_non_dict(self, b, mock_send):
        mock_send.return_value = None
        assert b.tabs_dedupe() == 0

    def test_tabs_sort(self, b, mock_send):
        b.tabs_sort(by="title")
        mock_send.assert_called_once_with("tabs.sort", {"by": "title"}, profile=None)

    def test_tabs_merge_windows(self, b, mock_send):
        mock_send.return_value = {"moved": 4}
        assert b.tabs_merge_windows() == 4

    def test_tabs_close_inactive(self, b, mock_send):
        mock_send.return_value = {"closed": 2}
        assert b.tabs_close_inactive() == 2

    def test_tabs_close_duplicates(self, b, mock_send):
        mock_send.return_value = {"closed": 1}
        assert b.tabs_close_duplicates() == 1


# ── Groups ────────────────────────────────────────────────────────────────────

class TestGroups:
    def test_group_list_returns_group_objects(self, b, mock_send):
        mock_send.return_value = [GROUP_DATA]
        groups = b.group_list()
        assert len(groups) == 1
        assert isinstance(groups[0], Group)
        assert groups[0].id == 42

    def test_group_list_empty(self, b, mock_send):
        mock_send.return_value = None
        assert b.group_list() == []

    def test_group_tabs(self, b, mock_send):
        mock_send.return_value = [TAB_DATA]
        tabs = b.group_tabs(42)
        assert isinstance(tabs[0], Tab)
        mock_send.assert_called_once_with("group.tabs", {"groupId": 42}, profile=None)

    def test_group_count(self, b, mock_send):
        mock_send.return_value = 7
        assert b.group_count() == 7

    def test_group_query(self, b, mock_send):
        mock_send.return_value = [GROUP_DATA]
        groups = b.group_query("Work")
        assert isinstance(groups[0], Group)

    def test_group_close(self, b, mock_send):
        b.group_close(42)
        mock_send.assert_called_once_with("group.close", {"groupId": 42}, profile=None)

    def test_group_create_dict_response(self, b, mock_send):
        mock_send.return_value = GROUP_DATA
        group = b.group_create("Work")
        assert isinstance(group, Group)
        assert group.id == 42
        assert group.title == "Work"

    def test_group_create_int_response(self, b, mock_send):
        mock_send.return_value = 99
        group = b.group_create("Misc")
        assert group.id == 99
        assert group.title == "Misc"

    def test_group_add_tab(self, b, mock_send):
        mock_send.return_value = {"tabId": 55}
        tab_id = b.group_add_tab(42, "https://example.com")
        assert tab_id == 55
        mock_send.assert_called_once_with(
            "group.add_tab", {"group": "42", "url": "https://example.com"}, profile=None
        )

    def test_group_add_tab_non_dict_response(self, b, mock_send):
        mock_send.return_value = 55
        assert b.group_add_tab(42) == 55

    def test_group_move_forward(self, b, mock_send):
        b.group_move(42, forward=True)
        mock_send.assert_called_once_with(
            "group.move", {"group": "42", "forward": True, "backward": False}, profile=None
        )


# ── Tab model ─────────────────────────────────────────────────────────────────

class TestTabModel:
    @pytest.fixture()
    def tab(self, b, mock_send):
        return b._make_tab(TAB_DATA)

    def test_close(self, tab, mock_send):
        tab.close()
        mock_send.assert_called_once_with("tabs.close", {"tabId": 10}, profile=None)

    def test_activate(self, tab, mock_send):
        tab.activate()
        mock_send.assert_called_once_with("tabs.active", {"tabId": 10}, profile=None)

    def test_reload(self, tab, mock_send):
        tab.reload()
        mock_send.assert_called_once_with("navigate.reload", {"tabId": 10}, profile=None)

    def test_hard_reload(self, tab, mock_send):
        tab.hard_reload()
        mock_send.assert_called_once_with("navigate.hard_reload", {"tabId": 10}, profile=None)

    def test_move_forward(self, tab, mock_send):
        tab.move(forward=True)
        mock_send.assert_called_once_with(
            "tabs.move",
            {"tabId": 10, "forward": True, "backward": False, "groupId": None, "windowId": None, "index": None},
            profile=None,
        )

    def test_move_to_group(self, tab, mock_send):
        tab.move(group_id=5)
        assert mock_send.call_args[0][1]["groupId"] == 5

    def test_html(self, tab, mock_send):
        mock_send.return_value = "<html/>"
        assert tab.html() == "<html/>"
        mock_send.assert_called_once_with("tabs.html", {"tabId": 10}, profile=None)

    def test_open(self, tab, mock_send):
        tab.open("https://new.example.com")
        mock_send.assert_called_once_with(
            "navigate.open", {"url": "https://new.example.com", "background": False}, profile=None
        )

    def test_unbound_raises(self):
        tab = Tab(id=1, window_id=0, active=False, title="", url="")
        with pytest.raises(RuntimeError, match="not bound"):
            tab.close()


# ── Group model ───────────────────────────────────────────────────────────────

class TestGroupModel:
    @pytest.fixture()
    def group(self, b, mock_send):
        return b._make_group(GROUP_DATA)

    def test_close(self, group, mock_send):
        group.close()
        mock_send.assert_called_once_with("group.close", {"groupId": 42}, profile=None)

    def test_tabs(self, group, mock_send):
        mock_send.return_value = [TAB_DATA]
        tabs = group.tabs()
        assert isinstance(tabs[0], Tab)
        mock_send.assert_called_once_with("group.tabs", {"groupId": 42}, profile=None)

    def test_move_forward(self, group, mock_send):
        group.move(forward=True)
        mock_send.assert_called_once_with(
            "group.move", {"group": "42", "forward": True, "backward": False}, profile=None
        )

    def test_move_backward(self, group, mock_send):
        group.move(backward=True)
        assert mock_send.call_args[0][1]["backward"] is True

    def test_add_tab(self, group, mock_send):
        mock_send.return_value = {"tabId": 77}
        result = group.add_tab("https://example.com")
        assert result == 77

    def test_add_tab_no_url(self, group, mock_send):
        mock_send.return_value = {"tabId": 78}
        group.add_tab()
        assert mock_send.call_args[0][1]["url"] is None

    def test_unbound_raises(self):
        group = Group(id=1, title="x", color="", collapsed=False, tab_count=0)
        with pytest.raises(RuntimeError, match="not bound"):
            group.close()