import assert from 'node:assert/strict';
import test from 'node:test';
import scoreCalibrations from '../../../data/score-calibrations.json' with { type: 'json' };
import { buildExactSkillWindows, calculateExactScore, perfectNoteScoreFromPower, scoreRatioFromNotes } from './index.ts';
import type { ExactSongChart, OptimizerCard } from './types.ts';

const inactiveCard: OptimizerCard = {
  id: 'card',
  name: '카드',
  active: { cooldownSeconds: 999, durationSeconds: 1, scoreUpPercent: 100, probabilityPercent: 100 },
  special: { durationSeconds: 0, scoreUpPercent: 0 }
};

function chart(notes: ExactSongChart['notes']): ExactSongChart {
  return { songId: 'test', difficulty: 'expert', durationSeconds: 120, scoreRatio: 100, notes, specialStartSeconds: [] };
}

test('종합력과 악곡 비율로 PERFECT 1노트 기본점수를 계산한다', () => {
  assert.equal(perfectNoteScoreFromPower(120_000, 200), 600);
  assert.equal(perfectNoteScoreFromPower(120_100, 200), 600.5);
  assert.equal(perfectNoteScoreFromPower(0, 200, 777), 777);
});

test('플릭 1.05배와 홀드 중간 판정 각각의 가중치로 환산비율을 계산한다', () => {
  const ratio = scoreRatioFromNotes([
    { timeSeconds: 1, type: 'regular', isFlick: false },
    { timeSeconds: 2, type: 'regular', isFlick: true },
    { timeSeconds: 3, type: 'mid', isFlick: false },
    { timeSeconds: 3, type: 'mid', isFlick: false }
  ]);
  assert.ok(Math.abs(ratio - 2.25 * 0.3713416563352296) < 1e-12);
});

test('기본점수의 소수점을 유지하고 가창 보너스 적용 후 노트별로 올림한다', () => {
  const result = calculateExactScore([inactiveCard], {}, chart([
    { timeSeconds: 1, type: 'regular', isFlick: false }
  ]), { perfectNoteScore: 1_354.507, directSongScoreBonusPercent: 10 });
  assert.equal(result.baselineScore, 1_490);
});

test('이벤트 보너스는 가창 보너스와 따로 노트 합계에 곱하고 노트 점수는 유지한다', () => {
  const song = { ...chart([
    { timeSeconds: 1, type: 'regular' as const, isFlick: false },
    { timeSeconds: 1.5, type: 'regular' as const, isFlick: true },
    { timeSeconds: 2, type: 'mid' as const, isFlick: false }
  ]), specialStartSeconds: [1] };
  const card = { ...inactiveCard,
    active: { cooldownSeconds: 1, durationSeconds: 1, scoreUpPercent: 85, probabilityPercent: 50 },
    special: { durationSeconds: 2, scoreUpPercent: 120 }
  };
  const options = { perfectNoteScore: 1354.507, directSongScoreBonusPercent: 10 };
  const ordinary = calculateExactScore([card], {}, song, options);
  const event = calculateExactScore([card], {}, song, { ...options, finalScoreBonusPercent: 10 });
  for (const key of ['expectedScore', 'theoreticalMaxScore', 'baselineScore', 'withoutSpecialStartBonusScore'] as const) {
    assert.equal(event[key], ordinary[key]! * 1.1);
  }
  assert.deepEqual(event.notes, ordinary.notes);
  assert.deepEqual(event.scoreBySecond, ordinary.scoreBySecond);
  assert.equal(event.perfectNoteScore, ordinary.perfectNoteScore);
  assert.notEqual(event.theoreticalMaxScore,
    calculateExactScore([card], {}, song, { ...options, directSongScoreBonusPercent: 20 }).theoreticalMaxScore);
});

test('100콤보부터 1% 콤보 보너스를 적용한다', () => {
  const notes = Array.from({ length: 100 }, (_, index) => ({ timeSeconds: index, type: 'regular' as const, isFlick: false }));
  const result = calculateExactScore([inactiveCard], {}, chart(notes), { perfectNoteScore: 600 });
  assert.equal(result.baselineScore, 99 * 600 + 606);
});

test('홀드 중간 노트는 10%, 플릭은 1.05배로 계산한다', () => {
  const result = calculateExactScore([inactiveCard], {}, chart([
    { timeSeconds: 1, type: 'mid', isFlick: false },
    { timeSeconds: 2, type: 'regular', isFlick: true }
  ]), { perfectNoteScore: 600 });
  assert.equal(result.baselineScore, 60 + 630);
});

test('같은 시각의 여러 홀드 중간 판정을 각각 계산한다', () => {
  const result = calculateExactScore([inactiveCard], {}, chart([
    { timeSeconds: 1, type: 'mid', isFlick: false },
    { timeSeconds: 1, type: 'mid', isFlick: false }
  ]), { perfectNoteScore: 600 });
  assert.equal(result.baselineScore, 120);
  assert.equal(result.notes.length, 2);
});

test('액티브 발동 확률과 스페셜 스코어 서포트를 기대 점수에 반영한다', () => {
  const card: OptimizerCard = {
    id: 'score',
    name: '스코어 카드',
    active: { cooldownSeconds: 1, durationSeconds: 1, scoreUpPercent: 100, probabilityPercent: 50 },
    special: { durationSeconds: 2, scoreUpPercent: 100 }
  };
  const result = calculateExactScore([card], {}, {
    ...chart([{ timeSeconds: 1, type: 'regular', isFlick: false }]),
    specialStartSeconds: [0]
  }, { perfectNoteScore: 600 });
  assert.equal(result.expectedScore, 1_200);
  assert.equal(result.theoreticalMaxScore, 1_800);
});

test('블루 보드와 스페셜의 발동률 증가 배율을 합산해 기대 점수에 반영한다', () => {
  const main: OptimizerCard = {
    id: 'main',
    name: '메인',
    active: {
      cooldownSeconds: 1,
      durationSeconds: 1,
      scoreUpPercent: 100,
      probabilityPercent: 55,
      activationRateUpPercent: 30
    },
    special: { durationSeconds: 0, scoreUpPercent: 0 }
  };
  const support: OptimizerCard = {
    id: 'support',
    name: '서포트',
    active: { cooldownSeconds: 999, durationSeconds: 0, scoreUpPercent: 0, probabilityPercent: 0 },
    special: { durationSeconds: 3, scoreUpPercent: 0, activationRateUpPercent: 40 }
  };
  const result = calculateExactScore([main, support], {}, {
    ...chart([{ timeSeconds: 1, type: 'regular', isFlick: false }]),
    specialStartSeconds: [null, 0]
  }, { perfectNoteScore: 100 });

  assert.equal(result.expectedScore, 194);
  assert.equal(result.theoreticalMaxScore, 200);
});

test('등록된 실측 ratio가 모든 1노트 측정값을 재현한다', () => {
  for (const calibration of scoreCalibrations.charts) {
    for (const measurement of calibration.measurements) {
      const result = calculateExactScore([inactiveCard], {}, chart([
        { timeSeconds: 1, type: 'regular', isFlick: false }
      ]), {
        perfectNoteScore: measurement.overallPower / calibration.scoreRatio,
        directSongScoreBonusPercent: measurement.directSongScoreBonusPercent
      });
      assert.equal(
        result.baselineScore,
        measurement.normalPerfectScore,
        `${calibration.songId} ${calibration.difficulty}`
      );
    }
  }
});


test('지정한 액티브만 실패 처리하고 겹친 다른 카드와 다음 발동은 유지한다', () => {
  const strong: OptimizerCard = {
    ...inactiveCard, id: 'strong',
    active: { cooldownSeconds: 10, durationSeconds: 3, scoreUpPercent: 100, probabilityPercent: 50 }
  };
  const weak: OptimizerCard = {
    ...inactiveCard, id: 'weak',
    active: { cooldownSeconds: 10, durationSeconds: 3, scoreUpPercent: 50, probabilityPercent: 100 }
  };
  const interval = 10 / 1.04;
  const song = chart([interval - 0.01, interval, interval + 3, interval * 2].map((timeSeconds) => ({ timeSeconds, type: 'regular' as const, isFlick: false })));
  const reductions = { strong: 4 as const, weak: 4 as const };
  const cards = [strong, weak];
  const original = calculateExactScore(cards, reductions, song, { perfectNoteScore: 100 });
  const excludedActiveWindows = [{ cardId: 'strong', startSeconds: interval }];
  const modified = calculateExactScore(cards, reductions, song, { perfectNoteScore: 100, excludedActiveWindows });
  assert.deepEqual(modified.notes.map((note) => note.theoreticalMaxScore), [100, 150, 100, 200]);
  assert.deepEqual(modified.notes.map((note) => note.expectedScore), [100, 150, 100, 175]);
  assert.equal(modified.baselineScore, original.baselineScore);
  assert.equal(modified.scoreBySecond[9], 250);
  assert.deepEqual(calculateExactScore(cards, reductions, song, { perfectNoteScore: 100, excludedActiveWindows: [] }), original);
  const windows = buildExactSkillWindows(cards, reductions, song, excludedActiveWindows);
  assert.equal(windows.effectiveActiveWindows.find((window) => window.startSeconds === interval)?.cardId, 'weak');
  assert.equal(windows.effectiveActiveWindows.find((window) => window.startSeconds === interval * 2)?.cardId, 'strong');
  assert.ok(windows.activeWindows.some((window) => window.cardId === 'strong' && window.startSeconds === interval));
  const bothExcluded = [...excludedActiveWindows, { cardId: 'weak', startSeconds: interval }];
  const noActive = calculateExactScore(cards, reductions, song, { perfectNoteScore: 100, excludedActiveWindows: bothExcluded });
  assert.equal(noActive.notes[1].theoreticalMaxScore, noActive.notes[1].baselineScore);
  assert.ok(!buildExactSkillWindows(cards, reductions, song, bothExcluded).effectiveActiveWindows.some((window) => window.startSeconds === interval));
});