"""P2 단계 누적 게이지 파생(build_session_progress) 테스트."""

from __future__ import annotations

import unittest

from .services import state_machine
from .session_read_model import build_session_progress


class SessionProgressTest(unittest.TestCase):
    def test_initial_state_gauges(self) -> None:
        state = state_machine.SessionState()
        progress = build_session_progress(state)
        self.assertEqual([s.stage for s in progress.stages], ["라포", "탐색", "개입", "정리"])
        self.assertEqual(progress.stages[0].percent, 0)
        self.assertFalse(progress.stages[0].achieved)
        self.assertEqual(progress.stages[1].percent, 0)
        self.assertEqual(progress.rapport_percent, 0)
        self.assertEqual(progress.rapport_delta_percent, 0)

    def test_current_stage_gauge_scales_with_rapport(self) -> None:
        state = state_machine.SessionState(rapport_credit=0.15)
        progress = build_session_progress(state)
        # 라포 전이 임계 0.30 → 0.15는 절반 = 약 50 (99 스케일 반올림 50)
        self.assertAlmostEqual(progress.stages[0].percent, 50, delta=2)
        self.assertFalse(progress.stages[0].achieved)

    def test_current_stage_gauge_caps_at_99_until_transition(self) -> None:
        state = state_machine.SessionState(rapport_credit=0.9)
        progress = build_session_progress(state)
        self.assertEqual(progress.stages[0].percent, 99)

    def test_passed_stage_is_100_and_achieved(self) -> None:
        state = state_machine.SessionState(
            stage=state_machine.Stage.EXPLORE,
            rapport_credit=0.32,
        )
        progress = build_session_progress(state)
        self.assertEqual(progress.stages[0].percent, 100)
        self.assertTrue(progress.stages[0].achieved)
        # 탐색 임계 0.45 → 0.32/0.45*99 ≈ 70
        self.assertAlmostEqual(progress.stages[1].percent, 70, delta=2)
        self.assertEqual(progress.stages[2].percent, 0)

    def test_close_stage_entry_is_100(self) -> None:
        state = state_machine.SessionState(
            stage=state_machine.Stage.CLOSE,
            rapport_credit=0.6,
        )
        progress = build_session_progress(state)
        self.assertTrue(all(s.percent == 100 for s in progress.stages))
        self.assertTrue(progress.stages[3].achieved)

    def test_goal_flag_and_delta_from_carry(self) -> None:
        state = state_machine.SessionState(rapport_credit=0.33)
        progress = build_session_progress(
            state,
            prev_rapport_credit=0.11,
            goal_stages=["라포", "탐색"],
        )
        self.assertTrue(progress.stages[0].is_goal)
        self.assertTrue(progress.stages[1].is_goal)
        self.assertFalse(progress.stages[2].is_goal)
        # 0.33/0.55=60%, 0.11/0.55=20% → 이번 회기 +40%p
        self.assertEqual(progress.rapport_percent, 60)
        self.assertEqual(progress.rapport_delta_percent, 40)

    def test_detail_metrics_are_percentages(self) -> None:
        state = state_machine.SessionState(
            resistance=0.65,
            effective_openness=0.42,
        )
        progress = build_session_progress(state)
        self.assertEqual(progress.resistance_percent, 65)
        self.assertEqual(progress.openness_percent, 42)


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