import { test } from 'node:test'
import assert from 'node:assert/strict'
import { readFileSync } from 'node:fs'
import type { Event, ScoreChannel, ScoringProfile, TeamRankEntry } from '@/shared'
import { computeEventScore, type ScorableRow, type ScoreContext } from '../api/scoring'

/**
 * 「按单位录名次」（scope=team + basis=manual）的预览口径，逐条对齐服务端
 * domain/scoring.go 的 collectTeamManualCandidates 与 groupPoints。
 *
 * 现场报的 bug：台球按单位在录入页底部的「团体名次」卡片里录名次（channel_manual_ranks），
 * 服务端算对了（六个单位合计 40 分），录入页的实时预览却每个单位都是 0——预览只读行上的
 * rank，从不读 channel_manual_ranks。而那张预览又是发布确认框里「最大分差」的来源。
 */

function makeEvent(overrides: Partial<Event> = {}): Event {
  return {
    id: 1,
    sportId: 1,
    code: 'BALL',
    name: '台球',
    eventType: 'team',
    resultMode: 'manual',
    resultType: 'none',
    compare: 'none',
    recordEligible: false,
    scored: true,
    awardMedals: true,
    multiplier: 1,
    status: 'pending',
    scheduledAt: null,
    venue: null,
    sortOrder: 1,
    remark: null,
    avgMode: 'valid',
    ...overrides,
  }
}

function makeProfile(overrides: Partial<ScoringProfile> = {}): ScoringProfile {
  return { id: 1, code: 'p', name: 'p', tieMode: 'skip', recordBonusMode: 'max', rules: [], ...overrides }
}

function makeChannel(overrides: Partial<ScoreChannel> = {}): ScoreChannel {
  return { id: 1, eventId: 1, scope: 'team', basis: 'manual', profileId: 1, sortOrder: 1, countToTeam: true, ...overrides }
}

function makeContext(overrides: Partial<ScoreContext> = {}): ScoreContext {
  return { event: makeEvent(), category: null, channels: [], profiles: [], weight: 1, ...overrides }
}

/** 团体名次分表：与规则包 team_top6 同一张表，第 1–6 名 15/10/8/4/2/1（六个单位合计 40 分，正是现场那组数）。 */
const TEAM_PROFILE = makeProfile({
  rules: [
    { rank: 1, points: 15 },
    { rank: 2, points: 10 },
    { rank: 3, points: 8 },
    { rank: 4, points: 4 },
    { rank: 5, points: 2 },
    { rank: 6, points: 1 },
  ],
})

const SIX_UNITS: TeamRankEntry[] = [
  { teamId: 100, rank: 1 },
  { teamId: 101, rank: 2 },
  { teamId: 102, rank: 3 },
  { teamId: 103, rank: 4 },
  { teamId: 104, rank: 5 },
  { teamId: 105, rank: 6 },
]

function close(actual: number, expected: number): void {
  assert.ok(Math.abs(actual - expected) < 1e-9, `${actual} != ${expected}`)
}

test('名次只填在「团体名次」卡片（channel_manual_ranks）：六个单位合计 40 分', () => {
  // 与服务端 httpapi 侧 team_manual_ranks_score_test.go 同输入同期望：同一份 channel_manual_ranks，
  // 预览与引擎必须给出同一组数字。
  // 团体名次不挂在任何报名项上：六个单位各录一个名次，成绩表里一行都没有 rank。
  const rows: ScorableRow[] = [100, 101, 102, 103, 104, 105].map((teamId, index) => ({
    entryId: index + 1,
    teamId,
    athleteId: index + 1,
    resultValue: null,
    rank: null,
    status: 'ok',
    isTie: false,
  }))
  const result = computeEventScore(
    rows,
    makeContext({ channels: [makeChannel()], profiles: [TEAM_PROFILE], teamRanks: SIX_UNITS }),
  )
  const expected = [15, 10, 8, 4, 2, 1]
  let total = 0
  for (const [index, teamId] of [100, 101, 102, 103, 104, 105].entries()) {
    const points = result.teamPoints.get(teamId) ?? 0
    close(points, expected[index] ?? 0)
    total += points
  }
  close(total, 40)
})

test('团体手工通道只认按单位录的名次：填在个人行上的名次一律不进团体通道', () => {
  // 服务端 collectTeamManualCandidates 只收 athlete_id == 0 的团体行；
  // 预览若照旧读行上的 rank，就会出现「预览有分（10/9/8…）、服务端 0」。
  const rows: ScorableRow[] = [10, 9, 8, 6, 4, 3].map((rank, index) => ({
    entryId: index + 1,
    teamId: 100 + index,
    athleteId: index + 1,
    resultValue: null,
    rank,
    status: 'ok',
    isTie: false,
  }))
  const result = computeEventScore(rows, makeContext({ channels: [makeChannel()], profiles: [TEAM_PROFILE] }))
  assert.equal(result.teamPoints.size, 0)
  assert.equal(result.rowPoints.size, 0)
})

test('两个团体行的名次照旧生效，且被卡片里的名次覆盖', () => {
  // 纯团体项目（篮球等）的成绩表兜底：团体行（athleteId 为 null）上录的名次。
  const rows: ScorableRow[] = [
    { entryId: 1, teamId: 100, athleteId: null, resultValue: null, rank: 1, status: 'ok', isTie: false },
    { entryId: 2, teamId: 101, athleteId: null, resultValue: null, rank: 2, status: 'ok', isTie: false },
  ]
  const fromRows = computeEventScore(rows, makeContext({ channels: [makeChannel()], profiles: [TEAM_PROFILE] }))
  close(fromRows.teamPoints.get(100) ?? 0, 15)
  close(fromRows.teamPoints.get(101) ?? 0, 10)
  assert.equal(fromRows.ranks.get(1), 1)

  // 同一单位两个来源都有时以 channel_manual_ranks 为准（服务端 overrideOf）。
  const overridden = computeEventScore(
    rows,
    makeContext({
      channels: [makeChannel()],
      profiles: [TEAM_PROFILE],
      teamRanks: [
        { teamId: 100, rank: 2 },
        { teamId: 101, rank: 1 },
      ],
    }),
  )
  close(overridden.teamPoints.get(100) ?? 0, 10)
  close(overridden.teamPoints.get(101) ?? 0, 15)
  assert.equal(overridden.ranks.get(1), 2)
})

test('联队：按单位录的名次按份额拆给各成员单位（与服务端 jointTeamEntry + ledgerFromRanked 同口径）', () => {
  // 服务端 joint_team_test.go 的场景：联队报名（A、B 各半）+ TeamRanks{主单位 A 第 1 名}、15 分表
  // → A、B 各 7.5。名次挂在联队那条报名上（entryId 1），所以行分是整份 15，单位分才拆。
  const profile = makeProfile({ rules: [{ rank: 1, points: 15 }] })
  const result = computeEventScore(
    [
      {
        entryId: 1,
        teamId: 100,
        athleteId: 0,
        resultValue: null,
        rank: null,
        status: 'ok',
        isTie: false,
        shares: [
          { teamId: 100, weight: 1 },
          { teamId: 200, weight: 1 },
        ],
      },
    ],
    makeContext({ channels: [makeChannel()], profiles: [profile], teamRanks: [{ teamId: 100, rank: 1 }] }),
  )
  close(result.teamPoints.get(100) ?? 0, 7.5)
  close(result.teamPoints.get(200) ?? 0, 7.5)
  close(result.rowPoints.get(1) ?? 0, 15)
})

test('lastPlaceZero 只抹「起始名次正好落在末位」的那一组：两人并列第 1 不归零', () => {
  // 服务端判据是 startRank == lastPlace（scoring.go groupPoints）。两人并列第 1 时
  // 占位名次是 1、2，末位档 = 2，起始名次 1 != 2 → 照发第 1 名的分。
  const profile = makeProfile({
    lastPlaceZero: true,
    rules: [
      { rank: 1, points: 10 },
      { rank: 2, points: 6 },
      { rank: 3, points: 3 },
    ],
  })
  const result = computeEventScore(
    [makeRowOf(1, null, 100, 1), makeRowOf(2, null, 101, 1)],
    makeContext({
      event: makeEvent({ eventType: 'individual', resultType: 'none' }),
      channels: [makeChannel({ scope: 'athlete', basis: 'manual' })],
      profiles: [profile],
    }),
  )
  close(result.rowPoints.get(1) ?? 0, 10)
  close(result.rowPoints.get(2) ?? 0, 10)
  close(result.teamPoints.get(100) ?? 0, 10)
  close(result.teamPoints.get(101) ?? 0, 10)
})

test('lastPlaceZero 仍要抹掉真正的末位那一组', () => {
  const profile = makeProfile({
    lastPlaceZero: true,
    rules: [
      { rank: 1, points: 10 },
      { rank: 2, points: 6 },
      { rank: 3, points: 3 },
    ],
  })
  const result = computeEventScore(
    [makeRowOf(1, null, 100, 1), makeRowOf(2, null, 101, 2), makeRowOf(3, null, 102, 3)],
    makeContext({
      event: makeEvent({ eventType: 'individual', resultType: 'none' }),
      channels: [makeChannel({ scope: 'athlete', basis: 'manual' })],
      profiles: [profile],
    }),
  )
  close(result.rowPoints.get(1) ?? 0, 10)
  close(result.rowPoints.get(2) ?? 0, 6)
  close(result.rowPoints.get(3) ?? 0, 0)
})

test('compare=none 配 basis=result：预览报错，不静默按录入名次兜底', () => {
  const profile = makeProfile({
    rules: [
      { rank: 1, points: 10 },
      { rank: 2, points: 6 },
    ],
  })
  const result = computeEventScore(
    [makeRowOf(1, null, 100, 1), makeRowOf(2, null, 101, 2)],
    makeContext({
      event: makeEvent({ eventType: 'individual', resultMode: 'manual' }),
      channels: [makeChannel({ scope: 'athlete', basis: 'result' })],
      profiles: [profile],
    }),
  )
  assert.ok(result.error, '服务端 domain.ScoreEvent 对这个配置返回 ErrCompareRequired（发布 409），预览必须同样报错')
  assert.match(result.error.message, /比较方向/)
  assert.equal(result.error.channelLabel, '个人名次 / 按成绩自动排名')
  // 报错时不再产出任何分：预览不该给一个服务端算不出来的配置算分。
  assert.equal(result.teamPoints.size, 0)
  assert.equal(result.rowPoints.size, 0)
})

test('compare=none 配 basis=aggregate：同样报错', () => {
  const result = computeEventScore(
    [makeRowOf(1, 20, 100, null), makeRowOf(2, 16, 101, null)],
    makeContext({
      event: makeEvent({ eventType: 'team', resultType: 'count' }),
      channels: [makeChannel({ basis: 'aggregate' })],
      profiles: [TEAM_PROFILE],
    }),
  )
  assert.ok(result.error, '聚合通道同样要先按成绩排名，compare=none 时服务端返回 ErrCompareRequired')
  assert.match(result.error.message, /比较方向/)
})

test('compare=none 配 basis=manual：照常算分，不报错', () => {
  const result = computeEventScore(
    [],
    makeContext({ channels: [makeChannel()], profiles: [TEAM_PROFILE], teamRanks: SIX_UNITS }),
  )
  assert.equal(result.error, null)
  close(result.teamPoints.get(100) ?? 0, 15)
})

function makeRowOf(entryId: number, resultValue: number | null, teamId: number, rank: number | null): ScorableRow {
  return { entryId, teamId, athleteId: entryId, resultValue, rank, status: 'ok', isTie: false }
}

// 录入页没有组件测试工具，接线部分按仓库既有做法（avg-mode.test.ts）读源码断言：
// 纯函数再有分，页面没把「团体名次」卡片喂进去，现场看到的还是 0。
const ENTRY_SOURCE = readFileSync(new URL('../pages/EntryPage.vue', import.meta.url), 'utf8')

test('录入页把「团体名次」卡片喂进预览算分（接线掉了就等于没修）', () => {
  assert.match(
    ENTRY_SOURCE,
    /const previewTeamRanks = computed<TeamRankEntry\[\]>\(\(\) => teamRanksPayload\(teamRankRows\.value\)\.ranks\)/,
  )
  assert.match(ENTRY_SOURCE, /const score = computed\(\(\) => scoreWith\(visibleRows\.value, previewTeamRanks\.value\)\)/)
  assert.match(ENTRY_SOURCE, /const savedTeamRanks = computed<TeamRankEntry\[\]>\(\(\) => \{/)
  assert.match(ENTRY_SOURCE, /teamRanks,\n  \}\)/)
})

test('录入页把「不挂在行上的单位分」从已发布基线里扣掉，差值才算得对', () => {
  assert.match(ENTRY_SOURCE, /for \(const \[teamId, points\] of published\?\.unitPoints \?\? \[\]\)/)
  assert.match(ENTRY_SOURCE, /const scoreConfigError = computed\(\(\) => score\.value\?\.error \?\? null\)/)
})