"""
Tests for mma_agent_focus_ux_20260302 — Phase 3: Focus Agent UI + Filter Logic.
"""
from typing import Generator
import pytest
from unittest.mock import patch
from gui_2 import App


@pytest.fixture
def app_instance() -> Generator[App, None, None]:
 with (
  patch('gui_2.load_config', return_value={'gui': {'show_windows': {}}}),
  patch('gui_2.save_config'),
  patch('gui_2.project_manager'),
  patch('gui_2.session_logger'),
  patch('gui_2.immapp.run'),
  patch.object(App, '_load_active_project'),
  patch.object(App, '_fetch_models'),
  patch.object(App, '_load_fonts'),
  patch.object(App, '_post_init')
 ):
  yield App()


def test_ui_focus_agent_state_var_exists(app_instance):
 """App.__init__ must expose ui_focus_agent: str | None = None."""
 assert hasattr(app_instance, 'ui_focus_agent'), "ui_focus_agent missing from App"
 assert app_instance.ui_focus_agent is None


def test_tool_log_filter_all(app_instance):
 """When ui_focus_agent is None, all tool log entries are visible."""
 app = app_instance
 app._tool_log = [
  {"script": "a", "result": "r1", "ts": 1.0, "source_tier": "Tier 2"},
  {"script": "b", "result": "r2", "ts": 2.0, "source_tier": "Tier 3"},
  {"script": "c", "result": "r3", "ts": 3.0, "source_tier": None},
 ]
 app.ui_focus_agent = None
 filtered = app._tool_log if not app.ui_focus_agent else [
  e for e in app._tool_log if e.get("source_tier") == app.ui_focus_agent
 ]
 assert len(filtered) == 3


def test_tool_log_filter_tier3_only(app_instance):
 """When ui_focus_agent='Tier 3', only Tier 3 entries are shown."""
 app = app_instance
 app._tool_log = [
  {"script": "a", "result": "r1", "ts": 1.0, "source_tier": "Tier 2"},
  {"script": "b", "result": "r2", "ts": 2.0, "source_tier": "Tier 3"},
  {"script": "c", "result": "r3", "ts": 3.0, "source_tier": "Tier 3"},
  {"script": "d", "result": "r4", "ts": 4.0, "source_tier": None},
 ]
 app.ui_focus_agent = "Tier 3"
 filtered = [e for e in app._tool_log if e.get("source_tier") == app.ui_focus_agent]
 assert len(filtered) == 2
 assert all(e["source_tier"] == "Tier 3" for e in filtered)


def test_tool_log_filter_excludes_none_tier(app_instance):
 """Filtering to Tier 2 excludes entries with source_tier=None."""
 app = app_instance
 app._tool_log = [
  {"script": "a", "result": "r1", "ts": 1.0, "source_tier": "Tier 2"},
  {"script": "b", "result": "r2", "ts": 2.0, "source_tier": None},
 ]
 app.ui_focus_agent = "Tier 2"
 filtered = [e for e in app._tool_log if e.get("source_tier") == app.ui_focus_agent]
 assert len(filtered) == 1
 assert filtered[0]["script"] == "a"


def test_comms_log_filter_tier3_only(app_instance):
 """When ui_focus_agent='Tier 3', comms filter excludes other tiers."""
 app = app_instance
 import time
 app._comms_log = [
  {"ts": "10:00", "direction": "OUT", "kind": "request", "provider": "gemini",
   "model": "m", "payload": {}, "source_tier": "Tier 2", "local_ts": time.time()},
  {"ts": "10:01", "direction": "IN", "kind": "response", "provider": "gemini",
   "model": "m", "payload": {}, "source_tier": "Tier 3", "local_ts": time.time()},
  {"ts": "10:02", "direction": "OUT", "kind": "request", "provider": "gemini",
   "model": "m", "payload": {}, "source_tier": None, "local_ts": time.time()},
 ]
 app.ui_focus_agent = "Tier 3"
 app.is_viewing_prior_session = False
 log_to_render = list(app._comms_log)
 if app.ui_focus_agent and not app.is_viewing_prior_session:
  log_to_render = [e for e in log_to_render if e.get("source_tier") == app.ui_focus_agent]
 assert len(log_to_render) == 1
 assert log_to_render[0]["source_tier"] == "Tier 3"


def test_comms_log_filter_not_applied_for_prior_session(app_instance):
 """Focus filter must NOT apply when viewing prior session log."""
 app = app_instance
 app.ui_focus_agent = "Tier 3"
 app.is_viewing_prior_session = True
 prior = [
  {"ts": "10:00", "source_tier": "Tier 2"},
  {"ts": "10:01", "source_tier": "Tier 3"},
 ]
 app.prior_session_entries = prior
 log_to_render = app.prior_session_entries if app.is_viewing_prior_session else list(app._comms_log)
 if app.ui_focus_agent and not app.is_viewing_prior_session:
  log_to_render = [e for e in log_to_render if e.get("source_tier") == app.ui_focus_agent]
 assert len(log_to_render) == 2