"""Step definitions for tui_app_coverage.feature targeting cleveragents.tui.app."""

from types import SimpleNamespace

from behave import given, then, when

from features.steps._tui_helpers import _submit_text
from features.steps._tui_mock_helpers import (
    _FakeCommandRouter,
    _cleanup_tmpdir,
    _install_mock_textual,
    _make_persona_state,
    _restore_modules,
)


# ---------------------------------------------------------------------------
# Background
# ---------------------------------------------------------------------------
@given("the TUI app module is imported with mocked Textual")
def step_import_with_mock_textual(context):
    """Install mock Textual, reload app module, register cleanup."""
    _install_mock_textual(context)
    context.add_cleanup(lambda: _restore_modules(context))
    context.add_cleanup(lambda: _cleanup_tmpdir(context))


# ---------------------------------------------------------------------------
# Module-level import gate (lines 31-38)
# ---------------------------------------------------------------------------
@then("the reloaded app module should have _TEXTUAL_AVAILABLE True")
def step_textual_available_true(context):
    assert context._tui_app_mod._TEXTUAL_AVAILABLE is True


@then("the reloaded app module should expose _TextualCleverAgentsTuiApp")
def step_has_textual_class(context):
    assert hasattr(context._tui_app_mod, "_TextualCleverAgentsTuiApp")


# ---------------------------------------------------------------------------
# textual_available function (lines 43-45)
# ---------------------------------------------------------------------------
@then("textual_available should return True on the reloaded module")
def step_textual_available_returns_true(context):
    assert context._tui_app_mod.textual_available() is True


# ---------------------------------------------------------------------------
# SessionView (lines 48-54)
# ---------------------------------------------------------------------------
@when('I create a SessionView with session_id "{sid}" and transcript entries')
def step_create_session_view(context, sid):
    context._tui_session_view = context._tui_app_mod.SessionView(
        session_id=sid, transcript=["line1", "line2"]
    )


@then('the SessionView session_id should be "{sid}"')
def step_session_view_id(context, sid):
    assert context._tui_session_view.session_id == sid


@then("the SessionView transcript should contain {count:d} entries")
def step_session_view_transcript_count(context, count):
    assert len(context._tui_session_view.transcript) == count


# ---------------------------------------------------------------------------
# _CommandRouter protocol (lines 56-61)
# ---------------------------------------------------------------------------
@when("I create a _CommandRouter implementation")
def step_create_command_router_impl(context):
    class MyRouter:
        def handle(self, raw, *, session_id):
            return f"response:{raw}:{session_id}"

    context._tui_router_impl = MyRouter()


@then("calling handle on the implementation should return a response")
def step_call_handle(context):
    result = context._tui_router_impl.handle("test", session_id="s1")
    assert result == "response:test:s1"


# ---------------------------------------------------------------------------
# App instantiation (lines 91-100)
# ---------------------------------------------------------------------------
class _FakeCommandRouter:
    """Test command router that returns predictable responses."""

    def handle(self, raw, *, session_id):
        return f"handled:{raw}"


@given("a mock command router and persona state")
def step_create_mock_deps(context):
    context._tui_cmd_router = _FakeCommandRouter()
    context._tui_persona_state = _make_persona_state(context)


@when("I instantiate the Textual TUI app")
def step_instantiate_app(context):
    AppClass = context._tui_app_mod._ResolvedTuiApp
    context._tui_app = AppClass(
        command_router=context._tui_cmd_router,
        persona_state=context._tui_persona_state,
    )


@then('the app should have a _session with session_id "{sid}"')
def step_app_session_id(context, sid):
    assert context._tui_app._session.session_id == sid


@then("the app should store the command router")
def step_app_has_router(context):
    assert context._tui_app._command_router is context._tui_cmd_router


@then("the app should store the persona state")
def step_app_has_persona_state(context):
    assert context._tui_app._persona_state is context._tui_persona_state


# ---------------------------------------------------------------------------
# Class variables (lines 84-89)
# ---------------------------------------------------------------------------
@then('the app class should have CSS_PATH set to "{path}"')
def step_css_path(context, path):
    assert path == context._tui_app.CSS_PATH


@then("the app class should have {count:d} key bindings")
def step_bindings_count(context, count):
    assert len(context._tui_app.BINDINGS) == count


# ---------------------------------------------------------------------------
# compose (lines 102-112)
# ---------------------------------------------------------------------------
@when("I call compose on the app")
def step_call_compose(context):
    context._tui_compose_items = list(context._tui_app.compose())


@then("compose should yield at least {count:d} widgets")
def step_compose_count(context, count):
    assert len(context._tui_compose_items) >= count


# ---------------------------------------------------------------------------
# on_mount (lines 114-121)
# ---------------------------------------------------------------------------
@when("I call on_mount on the app")
def step_call_on_mount(context):
    context._tui_app.on_mount()


@then("the persona bar should have content set")
def step_persona_bar_has_content(context):
    from cleveragents.tui.widgets.persona_bar import PersonaBar

    bar = context._tui_app.query_one("#persona-bar", PersonaBar)
    assert hasattr(bar, "_text")
    assert bar._text  # non-empty


@then("the help panel should be hidden on mount")
def step_help_panel_hidden_on_mount(context):
    from cleveragents.tui.widgets.help_panel_overlay import HelpPanelOverlay

    panel = context._tui_app.query_one("#help-panel", HelpPanelOverlay)
    assert panel.visible is False
    assert panel._text == ""


@then("the reference picker should have suggestions initialised")
def step_ref_picker_initialised(context):
    from cleveragents.tui.widgets.reference_picker import ReferencePickerOverlay

    picker = context._tui_app.query_one("#reference-picker", ReferencePickerOverlay)
    assert hasattr(picker, "_text")


@then("the slash overlay should be hidden on mount")
def step_slash_overlay_hidden_on_mount(context):
    from cleveragents.tui.widgets.slash_command_overlay import SlashCommandOverlay

    overlay = context._tui_app.query_one("#slash-overlay", SlashCommandOverlay)
    assert overlay.visible is False
    assert overlay._text == ""


# ---------------------------------------------------------------------------
# action_help (lines 123-125)
# ---------------------------------------------------------------------------
@when("I call action_help on the app")
def step_call_action_help(context):
    context._tui_app.action_help()


@when('I set the prompt text to "{text}"')
def step_set_prompt_text(context, text):
    from cleveragents.tui.widgets.prompt import PromptInput

    prompt = context._tui_app.query_one("#prompt", PromptInput)
    prompt.value = text


@then('the conversation widget should contain "{text}"')
def step_conversation_contains(context, text):
    MockStatic = context._tui_mock_static
    conv = context._tui_app.query_one("#conversation", MockStatic)
    assert text in conv._text, f"Expected '{text}' in '{conv._text}'"


@then('the help panel text should contain "{text}"')
def step_help_panel_contains(context, text):
    from cleveragents.tui.widgets.help_panel_overlay import HelpPanelOverlay

    panel = context._tui_app.query_one("#help-panel", HelpPanelOverlay)
    assert text in panel._text, f"Expected '{text}' in '{panel._text}'"


# ---------------------------------------------------------------------------
# action_cycle_preset (lines 127-129)
# ---------------------------------------------------------------------------
@when("I call action_cycle_preset on the app")
def step_call_action_cycle_preset(context):
    context._tui_app.action_cycle_preset()


@then("the persona bar content should be refreshed")
def step_persona_bar_refreshed(context):
    from cleveragents.tui.widgets.persona_bar import PersonaBar

    bar = context._tui_app.query_one("#persona-bar", PersonaBar)
    assert bar._text  # non-empty after refresh


# ---------------------------------------------------------------------------
# _refresh_persona_bar (lines 131-142)
# ---------------------------------------------------------------------------
@when("I call _refresh_persona_bar on the app")
def step_call_refresh_persona_bar(context):
    context._tui_app._refresh_persona_bar()


@then("the persona bar should display the persona name and scope")
def step_persona_bar_shows_name(context):
    from cleveragents.tui.widgets.persona_bar import PersonaBar

    bar = context._tui_app.query_one("#persona-bar", PersonaBar)
    assert "default" in bar._text
    assert "scope refs" in bar._text


# ---------------------------------------------------------------------------
# on_input_submitted: empty text (lines 144-150)
# ---------------------------------------------------------------------------
@when("I submit empty text to the app")
def step_submit_empty(context):
    MockStatic = context._tui_mock_static
    conv = context._tui_app.query_one("#conversation", MockStatic)
    context._tui_conv_before = conv._text
    _submit_text(context, "")


@then("the conversation widget should not be updated by input")
def step_conv_not_updated(context):
    MockStatic = context._tui_mock_static
    conv = context._tui_app.query_one("#conversation", MockStatic)
    assert conv._text == context._tui_conv_before


# ---------------------------------------------------------------------------
# on_input_submitted: command mode (lines 152-167)
# ---------------------------------------------------------------------------
# ---------------------------------------------------------------------------
# on_input_submitted: normal text with @ (lines 179-185)
# ---------------------------------------------------------------------------
@then("the reference picker should have been updated")
def step_ref_picker_updated(context):
    from cleveragents.tui.widgets.reference_picker import ReferencePickerOverlay

    picker = context._tui_app.query_one("#reference-picker", ReferencePickerOverlay)
    assert hasattr(picker, "_text")
    assert picker._text  # updated with suggestions


# ---------------------------------------------------------------------------
# action_escape cascade (issue #6450)
# ---------------------------------------------------------------------------
@when("I show the actor selection overlay")
def step_show_actor_selection(context):
    from cleveragents.tui.widgets.actor_selection_overlay import (
        ActorSelectionOverlay,
    )

    overlay = context._tui_app.query_one("#actor-selection", ActorSelectionOverlay)
    overlay.show()


@when('I show the help panel overlay for context "{context_name}"')
def step_show_help_panel_context(context, context_name):
    from cleveragents.tui.widgets.help_panel_overlay import HelpPanelOverlay

    panel = context._tui_app.query_one("#help-panel", HelpPanelOverlay)
    panel.show_context(context_name)


@when('I show the slash overlay for query "{query}"')
def step_show_slash_overlay(context, query):
    from cleveragents.tui.widgets.slash_command_overlay import SlashCommandOverlay

    overlay = context._tui_app.query_one("#slash-overlay", SlashCommandOverlay)
    commands = [SimpleNamespace(command=query, description=f"/{query} command")]
    overlay.set_commands(query, commands)


@when('I show the reference picker overlay for query "{query}"')
def step_show_reference_picker(context, query):
    from cleveragents.tui.widgets.reference_picker import ReferencePickerOverlay

    picker = context._tui_app.query_one("#reference-picker", ReferencePickerOverlay)
    picker.set_suggestions(query, [query])


@when("I call action_escape on the app")
def step_call_action_escape(context):
    context._tui_app.action_escape()


@then("the actor selection overlay should be hidden")
def step_actor_overlay_hidden(context):
    from cleveragents.tui.widgets.actor_selection_overlay import (
        ActorSelectionOverlay,
    )

    overlay = context._tui_app.query_one("#actor-selection", ActorSelectionOverlay)
    assert overlay.visible is False


@then("the help panel should remain visible")
def step_help_panel_visible(context):
    from cleveragents.tui.widgets.help_panel_overlay import HelpPanelOverlay

    panel = context._tui_app.query_one("#help-panel", HelpPanelOverlay)
    assert panel.visible is True
    assert panel._text


@then("the slash overlay should remain visible")
def step_slash_overlay_visible(context):
    from cleveragents.tui.widgets.slash_command_overlay import SlashCommandOverlay

    overlay = context._tui_app.query_one("#slash-overlay", SlashCommandOverlay)
    assert overlay.visible is True
    assert overlay._text


@then("the slash overlay should be hidden")
def step_slash_overlay_hidden(context):
    from cleveragents.tui.widgets.slash_command_overlay import SlashCommandOverlay

    overlay = context._tui_app.query_one("#slash-overlay", SlashCommandOverlay)
    assert overlay.visible is False
    assert overlay._text == ""


@then("the reference picker overlay should remain visible")
def step_reference_picker_visible(context):
    from cleveragents.tui.widgets.reference_picker import ReferencePickerOverlay

    picker = context._tui_app.query_one("#reference-picker", ReferencePickerOverlay)
    assert picker.visible is True
    assert picker._text


@then("the reference picker overlay should be hidden")
def step_reference_picker_hidden(context):
    from cleveragents.tui.widgets.reference_picker import ReferencePickerOverlay

    picker = context._tui_app.query_one("#reference-picker", ReferencePickerOverlay)
    assert picker.visible is False
    assert picker._text == ""


@then('the prompt text should be "{text}"')
def step_prompt_text_equals(context, text):
    from cleveragents.tui.widgets.prompt import PromptInput

    prompt = context._tui_app.query_one("#prompt", PromptInput)
    assert prompt.value == text


# ---------------------------------------------------------------------------
# CleverAgentsTuiApp alias (line 189)
# ---------------------------------------------------------------------------
@then("CleverAgentsTuiApp should be _TextualCleverAgentsTuiApp on the reloaded module")
def step_alias_check(context):
    assert (
        context._tui_app_mod.CleverAgentsTuiApp is context._tui_app_mod._ResolvedTuiApp
    )
    assert (
        context._tui_app_mod.CleverAgentsTuiApp.__name__ == "_TextualCleverAgentsTuiApp"
    )


# ---------------------------------------------------------------------------
# THEME class variable (issue #4742)
# ---------------------------------------------------------------------------
@then('the app class should have THEME set to "{theme}"')
def step_theme_class_var(context, theme: str) -> None:
    assert theme == context._tui_app.THEME, (
        f"Expected THEME='{theme}', got '{context._tui_app.THEME}'"
    )


# ---------------------------------------------------------------------------
# on_input_changed: live overlay update steps
# ---------------------------------------------------------------------------
def _trigger_input_changed(context, text: str) -> None:
    """Set prompt text and fire on_input_changed."""
    from cleveragents.tui.widgets.prompt import PromptInput

    prompt = context._tui_app.query_one("#prompt", PromptInput)
    prompt.text = text
    event = SimpleNamespace()
    context._tui_app.on_input_changed(event)


@when('I trigger on_input_changed with text "{text}"')
def step_trigger_input_changed(context, text: str) -> None:
    _trigger_input_changed(context, text)


@when("I trigger on_input_changed with empty text")
def step_trigger_input_changed_empty_text(context) -> None:
    _trigger_input_changed(context, "")


@then('the slash overlay should show only commands matching "{query}"')
def step_slash_overlay_filtered(context, query: str) -> None:
    from cleveragents.tui.widgets.slash_command_overlay import SlashCommandOverlay

    overlay = context._tui_app.query_one("#slash-overlay", SlashCommandOverlay)
    assert overlay._text, "Slash overlay text should not be empty"
    # All displayed commands must start with the query
    for cmd in overlay._commands:
        assert cmd.command.startswith(query), (
            f"Command '{cmd.command}' does not start with '{query}'"
        )


@then("the reference picker should be reset to empty")
def step_ref_picker_reset(context) -> None:
    from cleveragents.tui.widgets.reference_picker import ReferencePickerOverlay

    picker = context._tui_app.query_one("#reference-picker", ReferencePickerOverlay)
    assert picker._text == "", (
        f"Expected reference picker to be empty after reset, got: '{picker._text}'"
    )


@then("the slash overlay should be reset to all commands")
def step_slash_overlay_all_commands(context) -> None:
    from cleveragents.tui.widgets.slash_command_overlay import SlashCommandOverlay

    overlay = context._tui_app.query_one("#slash-overlay", SlashCommandOverlay)
    # "reset to all commands" means the overlay returned to its default hidden state
    # (set_commands with empty query calls hide(), clearing _text and _commands)
    assert not overlay._visible, "Slash overlay should be hidden after reset"
    assert overlay._text == "", "Slash overlay text should be empty after reset"