import { test } from 'node:test'
import assert from 'node:assert/strict'
import { readFileSync } from 'node:fs'
import {
  COLUMN_ALIASES,
  MANDATORY_COLUMNS,
  OPTIONAL_COLUMNS,
  REQUIRED_COLUMNS,
  SQUAD_COLUMN,
  buildSelectionRows,
  buildTeamSelectionRows,
  buildTemplateCsv,
  buildTeamSelections,
  emptyTeamPick,
  entryRowLabel,
  importColumnIndex,
  lookupImportColumn,
  missingColumnMessage,
  registeredAthleteIds,
  registeredTeamIds,
  registeredTeamSquads,
  selectableTeamIds,
  selectionAllowsSubmit,
  setPickedTeams,
  setTeamPickSquad,
  teamSelectionAllowsSubmit,
  templateFileName,
  templateHeader,
  toggleMemberPick,
  toggleTeamPick,
  toCsv,
} from '../components/baseData/entrySelection'

test('toCsv 按 RFC 4180 转义逗号 / 引号 / 换行', () => {
  assert.equal(toCsv([['a', 'b']]), 'a,b')
  assert.equal(toCsv([['张,伟', 'x']]), '"张,伟",x')
  assert.equal(toCsv([['张"伟', 'x']]), '"张""伟",x')
  assert.equal(toCsv([['第一行\n第二行', 'x']]), '"第一行\n第二行",x')
  // 同一格同时含逗号与引号：包裹一次，内部引号翻倍。
  assert.equal(toCsv([['a,"b"', 'c']]), '"a,""b""",c')
})

test('表头含证件号 / 性别 / 年龄 / 批次 / 队伍可选列，必填列不含这五列', () => {
  assert.deepEqual(
    [...REQUIRED_COLUMNS],
    [
      'event_code', 'category', 'team_code', 'athlete_name', 'id_card', 'gender', 'age',
      'bib', 'seed', 'heat', 'status', 'member_names', 'squad',
    ],
  )
  assert.equal(REQUIRED_COLUMNS[REQUIRED_COLUMNS.indexOf('gender') + 1], 'age', 'age 紧跟在 gender 之后')
  assert.equal(REQUIRED_COLUMNS[REQUIRED_COLUMNS.indexOf('seed') + 1], 'heat', 'heat 紧跟在 seed 之后')
  assert.equal(REQUIRED_COLUMNS.at(-1), SQUAD_COLUMN, '队伍列在最后：老表格一列都不会错位')
  assert.deepEqual([...OPTIONAL_COLUMNS], ['id_card', 'gender', 'age', 'heat', 'squad'])
  assert.equal(MANDATORY_COLUMNS.includes('id_card'), false)
  assert.equal(MANDATORY_COLUMNS.includes('age'), false)
  assert.equal(MANDATORY_COLUMNS.includes('heat'), false, '批次列可缺省，缺省即未分批')
  assert.equal(MANDATORY_COLUMNS.includes('squad'), false, '队伍列可缺省，缺省即不区分队伍')
  assert.equal(MANDATORY_COLUMNS.includes('athlete_name'), true)
})

test('buildSelectionRows 个人项目：一人一行，共 13 列并带上证件号 / 号码布', () => {
  const rows = buildSelectionRows({
    eventCode: 'M100',
    categoryName: '男子组',
    teamCode: 'F1',
    mode: 'individual',
    athletes: [
      { name: '张伟', idCard: '110101199001011234', bib: '101' },
      { name: '李强', idCard: null, bib: '102' },
      { name: '王芳', idCard: '110101199001011235', bib: null },
    ],
  })
  assert.equal(rows.length, 4, '表头 + 3 名运动员')
  assert.deepEqual(rows[0], [...REQUIRED_COLUMNS], '第一行复用导入表头')
  assert.equal(rows[1]?.length, 13)
  // 勾选报名的人员已在库里，年龄列留空表示「不修改」；批次列留空 = 未分批（到录入页再编排）；
  // 队伍列留空 = 个人报名没有「第几支队」这回事。
  assert.deepEqual(rows[1], ['M100', '男子组', 'F1', '张伟', '110101199001011234', '', '', '101', '', '', 'registered', '', ''])
  // 没有证件号时号码布进 bib 列，服务端按号码布匹配人员并同时写入报名。
  assert.deepEqual(rows[2], ['M100', '男子组', 'F1', '李强', '', '', '', '102', '', '', 'registered', '', ''])
  // 只有证件号时 bib 列留空。
  assert.deepEqual(rows[3], ['M100', '男子组', 'F1', '王芳', '110101199001011235', '', '', '', '', '', 'registered', '', ''])
})

test('buildSelectionRows 团体项目：整体一条，member_names 按列表顺序拼接', () => {
  const rows = buildSelectionRows({
    eventCode: 'BB',
    categoryName: '混合组',
    teamCode: 'F2',
    mode: 'team',
    athletes: [{ name: '王芳' }, { name: '刘洋' }, { name: '陈晨' }],
  })
  assert.equal(rows.length, 2, '表头 + 1 条团体报名')
  assert.equal(rows[1]?.length, 13)
  assert.deepEqual(rows[1], ['BB', '混合组', 'F2', '', '', '', '', '', '', '', 'registered', '王芳/刘洋/陈晨', ''])
})

test('buildSelectionRows 团体项目可用 memberNames 覆盖名单与顺序', () => {
  const rows = buildSelectionRows({
    eventCode: 'BB',
    categoryName: '混合组',
    teamCode: 'F2',
    status: 'scratched',
    mode: 'team',
    athletes: [{ name: '王芳' }],
    memberNames: ['刘洋', '王芳'],
  })
  assert.deepEqual(rows[1], ['BB', '混合组', 'F2', '', '', '', '', '', '', '', 'scratched', '刘洋/王芳', ''])
})

test('buildSelectionRows 个人项目：证件号与号码布都为空时两列留空，由导入通道报错', () => {
  const rows = buildSelectionRows({
    eventCode: 'M100',
    categoryName: '男子组',
    teamCode: 'F1',
    mode: 'individual',
    athletes: [{ name: '无标识' }],
  })
  assert.deepEqual(rows[1], ['M100', '男子组', 'F1', '无标识', '', '', '', '', '', '', 'registered', '', ''])
})

// 团体项目「只报单位」：一个人都没勾也要能提交，member_names 留空（服务端 athlete_id 为 NULL 的报名合法）。
test('buildSelectionRows 团体项目：0 名队员时 member_names 留空', () => {
  const rows = buildSelectionRows({
    eventCode: 'BB',
    categoryName: '混合组',
    teamCode: 'F2',
    mode: 'team',
    athletes: [],
  })
  assert.equal(rows.length, 2, '表头 + 1 条只挂单位的报名')
  assert.deepEqual(rows[1], ['BB', '混合组', 'F2', '', '', '', '', '', '', '', 'registered', '', ''])
})

test('团体 / 对抗项目 0 勾选可提交，个人项目必须勾人', () => {
  assert.equal(selectionAllowsSubmit('team', 0), true, '团体项目允许只报单位')
  assert.equal(selectionAllowsSubmit('team', 3), true)
  assert.equal(selectionAllowsSubmit('individual', 0), false, '个人项目必须至少勾一人')
  assert.equal(selectionAllowsSubmit('individual', 1), true)
})

// 团体报名改成「一次勾多个单位，每个单位一条报名」：产出必须与勾选顺序、列表顺序都稳定。
test('buildTeamSelectionRows 多个单位各一行，队员名单按 / 拼接，0 队员留空', () => {
  const rows = buildTeamSelectionRows({
    eventCode: 'BB',
    categoryName: '混合组',
    teams: [
      { teamCode: 'F1', memberNames: ['王芳', '刘洋'] },
      { teamCode: 'F2', memberNames: [] },
      { teamCode: 'F3', memberNames: ['张伟'] },
    ],
  })
  assert.equal(rows.length, 4, '表头 + 3 个单位')
  assert.deepEqual(rows[0], [...REQUIRED_COLUMNS], '第一行复用导入表头')
  assert.equal(rows[1]?.length, 13)
  for (const row of rows.slice(1)) {
    assert.equal(row[3], '', '团体行的 athlete_name 必须为空，服务端才按单位 upsert')
    assert.equal(row[12], '', '不填队名时队伍列留空 = 不区分队伍')
  }
  assert.deepEqual(rows[1], ['BB', '混合组', 'F1', '', '', '', '', '', '', '', 'registered', '王芳/刘洋', ''])
  assert.deepEqual(rows[2], ['BB', '混合组', 'F2', '', '', '', '', '', '', '', 'registered', '', ''])
  assert.deepEqual(rows[3], ['BB', '混合组', 'F3', '', '', '', '', '', '', '', 'registered', '张伟', ''])
})

test('buildTeamSelectionRows：一个单位都没勾时只有表头，status 可覆盖', () => {
  const empty = buildTeamSelectionRows({ eventCode: 'BB', categoryName: '混合组', teams: [] })
  assert.equal(empty.length, 1, '不勾单位就不产出数据行')
  const scratched = buildTeamSelectionRows({
    eventCode: 'BB',
    categoryName: '混合组',
    status: 'scratched',
    teams: [{ teamCode: 'F1', memberNames: [] }],
  })
  assert.deepEqual(scratched[1], ['BB', '混合组', 'F1', '', '', '', '', '', '', '', 'scratched', '', ''])
})

test('toggleTeamPick 勾选 / 取消单位，取消不清队员名单', () => {
  let state = emptyTeamPick()
  state = toggleTeamPick(state, 1, true)
  state = toggleTeamPick(state, 2, true)
  state = toggleMemberPick(state, 1, 11, true)
  assert.deepEqual(state.teamIds, [1, 2])
  assert.deepEqual(toggleTeamPick(state, 2, true).teamIds, [1, 2], '重复勾选幂等')

  state = toggleTeamPick(state, 1, false)
  assert.deepEqual(state.teamIds, [2])
  assert.deepEqual(state.memberIds[1], [11], '取消勾选保留队员名单')
  assert.deepEqual(toggleTeamPick(state, 1, true).memberIds[1], [11], '重新勾选恢复原名单')
})

test('toggleMemberPick 单位没勾选也能先登记队员，各单位名单互不影响', () => {
  let state = toggleMemberPick(emptyTeamPick(), 3, 31, true)
  state = toggleMemberPick(state, 3, 32, true)
  state = toggleMemberPick(state, 4, 41, true)
  assert.deepEqual(state.teamIds, [], '只登记队员不会顺手勾上单位')
  assert.deepEqual(state.memberIds[3], [31, 32])
  assert.deepEqual(state.memberIds[4], [41])
  assert.deepEqual(toggleMemberPick(state, 3, 31, true).memberIds[3], [31, 32], '重复勾选幂等')

  state = toggleMemberPick(state, 3, 31, false)
  assert.deepEqual(state.memberIds[3], [32])
  assert.deepEqual(state.memberIds[4], [41], '改一个单位的名单不动其它单位')
})

test('setPickedTeams 全选 / 清空只改单位勾选，保留已登记的队员', () => {
  let state = toggleMemberPick(emptyTeamPick(), 1, 11, true)
  state = setPickedTeams(state, [1, 2, 3])
  assert.deepEqual(state.teamIds, [1, 2, 3])
  assert.deepEqual(state.memberIds[1], [11])

  state = setPickedTeams(state, [])
  assert.deepEqual(state.teamIds, [])
  assert.deepEqual(state.memberIds[1], [11], '清空后名单还在，重新勾上即恢复')
})

test('selectableTeamIds 只含启用中且未报名的单位', () => {
  const teams = [
    { id: 1, active: true },
    { id: 2, active: false },
    { id: 3, active: true },
  ]
  assert.deepEqual(selectableTeamIds(teams, new Set([3])), [1], '已停用与已报名的都不进「全选」')
  assert.deepEqual(selectableTeamIds(teams, new Set()), [1, 3])
  assert.deepEqual(selectableTeamIds(teams, new Set([1, 3])), [], '全报过之后全选为空')
  assert.deepEqual(selectableTeamIds([], new Set([1])), [])
})

test('buildTeamSelections 只产出勾选单位的队员，并按列表顺序取启用中的人', () => {
  const teams = [
    { id: 1, code: 'F1' },
    { id: 2, code: 'F2' },
    { id: 3, code: 'F3' },
  ]
  const athletes = [
    { id: 11, teamId: 1, name: '张伟', active: true },
    { id: 12, teamId: 1, name: '李强', active: true },
    { id: 13, teamId: 1, name: '王芳', active: false },
    { id: 21, teamId: 2, name: '刘洋', active: true },
  ]
  let state = toggleTeamPick(emptyTeamPick(), 2, true)
  state = toggleTeamPick(state, 1, true)
  state = toggleMemberPick(state, 1, 12, true)
  state = toggleMemberPick(state, 1, 13, true)
  state = toggleMemberPick(state, 1, 11, true)
  state = toggleMemberPick(state, 3, 99, true)

  // 勾中的人同时带上队员关联（athleteId，devdocs/20）：姓名文字照旧进 memberNames。
  assert.deepEqual(buildTeamSelections(state, teams, athletes), [
    {
      teamId: 1,
      teamCode: 'F1',
      memberNames: ['张伟', '李强'],
      athletes: [
        { athleteId: 11, name: '张伟', bib: null },
        { athleteId: 12, name: '李强', bib: null },
      ],
    },
    { teamId: 2, teamCode: 'F2', memberNames: [], athletes: [] },
  ])
  assert.deepEqual(
    buildTeamSelections(setPickedTeams(state, []), teams, athletes),
    [],
    '没勾单位就没有要提交的行',
  )
})

test('teamSelectionAllowsSubmit 至少勾一个单位，队员可以为 0 人', () => {
  assert.equal(teamSelectionAllowsSubmit(0), false, '一个单位都不勾不能提交')
  assert.equal(teamSelectionAllowsSubmit(1), true, '只报单位（0 队员）可以提交')
  assert.equal(teamSelectionAllowsSubmit(5), true)
})

// 端到端拼接：勾选状态 → 多单位报名行 → 送进导入接口的 CSV 文本。
// 服务端按表头名字取值，列数与转义必须和导入表一致。
test('勾选状态转成 CSV 后表头与导入表一致，每个单位一行', () => {
  const teams = [
    { id: 1, code: 'F1' },
    { id: 2, code: 'F2' },
  ]
  const athletes = [
    { id: 11, teamId: 1, name: '张,伟', active: true },
    { id: 12, teamId: 1, name: '李强', active: true },
    { id: 21, teamId: 2, name: '王芳', active: true },
  ]
  let state = toggleTeamPick(emptyTeamPick(), 1, true)
  state = toggleTeamPick(state, 2, true)
  state = toggleMemberPick(state, 1, 11, true)
  state = toggleMemberPick(state, 1, 12, true)

  const rows = buildTeamSelectionRows({
    eventCode: 'BB',
    categoryName: '混合组',
    teams: buildTeamSelections(state, teams, athletes),
  })
  assert.equal(rows[1]?.length, REQUIRED_COLUMNS.length)
  assert.equal(rows[2]?.length, REQUIRED_COLUMNS.length)

  const lines = toCsv(rows).split('\n')
  assert.equal(lines[0], REQUIRED_COLUMNS.join(','))
  assert.equal(lines.length, 3, '表头 + 两个单位')
  assert.equal(lines[1], 'BB,混合组,F1,,,,,,,,registered,"张,伟/李强",', '带逗号的姓名按 RFC 4180 转义')
  assert.equal(lines[2], 'BB,混合组,F2,,,,,,,,registered,,', '只报单位时 member_names 留空')
})

test('registeredTeamIds 按组别取已报名单位；registeredAthleteIds 只认具体运动员', () => {
  const entries = [
    { categoryId: 7, teamId: 1, athleteId: 11 },
    { categoryId: 7, teamId: 1, athleteId: 12 },
    { categoryId: 7, teamId: 2, athleteId: null },
    { categoryId: 8, teamId: 3, athleteId: 13 },
  ]
  assert.deepEqual([...registeredTeamIds(entries, 7)].sort((a, b) => a - b), [1, 2])
  assert.deepEqual([...registeredTeamIds(entries, 9)], [], '别的组别不算已报名')
  assert.deepEqual([...registeredTeamIds(entries, undefined)], [], '没选组别时没有已报名')
  assert.deepEqual([...registeredAthleteIds(entries, 7, 1)].sort((a, b) => a - b), [11, 12])
  assert.deepEqual([...registeredAthleteIds(entries, 7, 2)], [], '团体行不带运动员')
  assert.deepEqual([...registeredAthleteIds(entries, 8, 3)], [13])
  assert.deepEqual([...registeredAthleteIds(entries, undefined, 1)], [])
})

// ── 队伍（迁移 0025）：同一个单位在一个组别可以派多个队 ────────────────────────

test('不填队名时报名行为与改造前完全一致：队伍列留空、其余列一个字都没变', () => {
  const rows = buildTeamSelectionRows({
    eventCode: 'BB',
    categoryName: '混合组',
    teams: [
      { teamCode: 'F1', memberNames: ['王芳'], squad: '' },
      { teamCode: 'F2', memberNames: [] },
    ],
  })
  assert.deepEqual(rows[0], [...REQUIRED_COLUMNS], '表头就是导入表本身（队伍列在最后、可空）')
  assert.equal(rows[1]?.length, REQUIRED_COLUMNS.length)
  assert.deepEqual(rows[1], ['BB', '混合组', 'F1', '', '', '', '', '', '', '', 'registered', '王芳', ''])
  assert.deepEqual(rows[2], ['BB', '混合组', 'F2', '', '', '', '', '', '', '', 'registered', '', ''])
  assert.equal(SQUAD_COLUMN, 'squad', '列名是服务端 importColumns 里的规范名')
  assert.equal(lookupImportColumn('队伍'), SQUAD_COLUMN, '中文表头「队伍」也认')
  assert.equal(lookupImportColumn('队名'), SQUAD_COLUMN)
})

test('填了队名：队名进最后一列，其它列一个字不动', () => {
  const rows = buildTeamSelectionRows({
    eventCode: 'BB',
    categoryName: '混合组',
    teams: [
      { teamCode: 'F1', memberNames: ['王芳', '刘洋'], squad: '一队' },
      // 同一个单位换个队名 = 这个单位的第二支队（服务端按 组别 + 单位 + 队伍 upsert）。
      { teamCode: 'F1', memberNames: [], squad: '二队' },
      // 没填队名的单位照样一行，队名格留空。
      { teamCode: 'F2', memberNames: ['张伟'] },
    ],
  })
  assert.deepEqual(rows[0], [...REQUIRED_COLUMNS])
  assert.deepEqual(rows[1], ['BB', '混合组', 'F1', '', '', '', '', '', '', '', 'registered', '王芳/刘洋', '一队'])
  assert.deepEqual(rows[2], ['BB', '混合组', 'F1', '', '', '', '', '', '', '', 'registered', '', '二队'])
  assert.deepEqual(rows[3], ['BB', '混合组', 'F2', '', '', '', '', '', '', '', 'registered', '张伟', ''])
  for (const line of toCsv(rows).split('\n')) {
    assert.equal(line.split(',').length, REQUIRED_COLUMNS.length)
  }
})

test('队名两侧空白去掉再上表：服务端存的就是去空白后的文本', () => {
  const rows = buildTeamSelectionRows({
    eventCode: 'BB',
    categoryName: '混合组',
    teams: [{ teamCode: 'F1', memberNames: [], squad: '  二队  ' }],
  })
  assert.equal(rows[1]?.[REQUIRED_COLUMNS.indexOf(SQUAD_COLUMN)], '二队')
})

test('setTeamPickSquad 只改这一个单位的队名，逐个字输入都保留', () => {
  let state = toggleTeamPick(emptyTeamPick(), 1, true)
  state = toggleTeamPick(state, 2, true)
  state = setTeamPickSquad(state, 1, '一')
  state = setTeamPickSquad(state, 1, '一队')
  assert.equal(state.squads?.[1], '一队')
  assert.equal(state.squads?.[2], undefined, '另一个单位没填')
  assert.deepEqual(state.teamIds, [1, 2], '填队名不动勾选')
  // 清空输入框 = 改回不区分队伍，与从没填过一样。
  assert.equal(setTeamPickSquad(state, 1, '').squads?.[1], '')
})

test('buildTeamSelections：填了队名的单位带上 squad，没填的与改造前逐字段相同', () => {
  const teams = [
    { id: 1, code: 'F1' },
    { id: 2, code: 'F2' },
  ]
  const athletes = [{ id: 11, teamId: 1, name: '张伟', active: true }]
  let state = toggleTeamPick(emptyTeamPick(), 1, true)
  state = toggleTeamPick(state, 2, true)
  state = toggleMemberPick(state, 1, 11, true)
  assert.deepEqual(buildTeamSelections(state, teams, athletes), [
    {
      teamId: 1,
      teamCode: 'F1',
      memberNames: ['张伟'],
      athletes: [{ athleteId: 11, name: '张伟', bib: null }],
    },
    { teamId: 2, teamCode: 'F2', memberNames: [], athletes: [] },
  ])

  const withSquad = setTeamPickSquad(state, 1, ' 二队 ')
  assert.deepEqual(buildTeamSelections(withSquad, teams, athletes), [
    {
      teamId: 1,
      teamCode: 'F1',
      memberNames: ['张伟'],
      athletes: [{ athleteId: 11, name: '张伟', bib: null }],
      squad: '二队',
    },
    { teamId: 2, teamCode: 'F2', memberNames: [], athletes: [] },
  ])
})

test('勾选状态 → CSV 端到端：一个单位两个队就是两行，队名在最后一列', () => {
  const teams = [
    { id: 1, code: 'F1' },
    { id: 2, code: 'F2' },
  ]
  let state = toggleTeamPick(emptyTeamPick(), 1, true)
  state = toggleTeamPick(state, 2, true)
  state = setTeamPickSquad(state, 1, '一队')
  state = setTeamPickSquad(state, 2, '青年队')

  const rows = buildTeamSelectionRows({
    eventCode: 'BB',
    categoryName: '混合组',
    teams: buildTeamSelections(state, teams, []),
  })
  const lines = toCsv(rows).split('\n')
  assert.equal(lines[0], REQUIRED_COLUMNS.join(','))
  assert.equal(lines[1], 'BB,混合组,F1,,,,,,,,registered,,一队')
  assert.equal(lines[2], 'BB,混合组,F2,,,,,,,,registered,,青年队')
})

test('registeredTeamSquads：按组别列出各单位已报名的队名，老报名（空串）不进表', () => {
  const entries = [
    { categoryId: 7, teamId: 1, squad: '一队' },
    { categoryId: 7, teamId: 1, squad: '二队' },
    { categoryId: 7, teamId: 1, squad: '一队' },
    { categoryId: 7, teamId: 2, squad: '' },
    { categoryId: 7, teamId: 3 },
    { categoryId: 8, teamId: 4, squad: '一队' },
  ]
  const squads = registeredTeamSquads(entries, 7)
  assert.deepEqual(squads.get(1), ['一队', '二队'], '按报名表出现顺序、去重')
  assert.equal(squads.has(2), false, '不区分队伍的老报名不进表，徽标仍只说「已报名」')
  assert.equal(squads.has(3), false, '缺字段（老服务端）同样当空串')
  assert.equal(squads.has(4), false, '别的组别不算')
  assert.deepEqual([...registeredTeamSquads(entries, undefined)], [])
})

test('entryRowLabel 团体行带上队名：同一单位的两个队在报错文案里也分得开', () => {
  assert.equal(entryRowLabel({ teamShort: '一司', squad: '二队' }), '一司二队')
  assert.equal(entryRowLabel({ teamShort: '一司', teamName: '第一分公司', squad: '' }), '一司', '没队名时不变')
  assert.equal(entryRowLabel({ teamName: '第一分公司', squad: '青年队' }), '第一分公司青年队')
  assert.equal(entryRowLabel({ athleteName: '张伟', teamShort: '一司', squad: '二队' }), '张伟', '个人行只写姓名')
  assert.equal(entryRowLabel({ memberNames: ['王芳'], teamShort: '一司', squad: '二队' }), '王芳')
})

// 团体 / 接力行服务端不下发 athleteName（omitempty），回落到队员 / 单位名，
// 否则防呆校验的文案会变成「：缺少成绩」。
test('entryRowLabel 团体行回落到队员首人 / 单位', () => {
  assert.equal(entryRowLabel({ athleteName: '张伟', memberNames: null, teamShort: '一队' }), '张伟')
  assert.equal(entryRowLabel({ athleteName: '', memberNames: ['王芳', '刘洋'], teamShort: '一队' }), '王芳')
  assert.equal(entryRowLabel({ athleteName: null, memberNames: [], teamShort: '一队' }), '一队')
  assert.equal(entryRowLabel({ athleteName: null, memberNames: null, teamShort: '', teamName: '第一分公司' }), '第一分公司')
  assert.equal(entryRowLabel({}), '')
})

// ── CSV 模板：中英两套表头，列顺序与列数完全一致 ──────────────────────────────

test('两种语言的模板表头逐列对应：列数、顺序一致，只有语言不同', () => {
  const zh = templateHeader('zh')
  const en = templateHeader('en')
  assert.deepEqual(en, [...REQUIRED_COLUMNS], '英文模板就是英文规范名')
  assert.equal(zh.length, en.length, '两种模板列数必须一样')
  assert.deepEqual(zh, [
    '项目编码', '组别', '单位编码', '姓名', '证件号', '性别', '年龄', '号码布', '种子', '批次', '状态', '队员名单', '队伍',
  ])
  assert.equal(zh.at(-1), '队伍', '队伍列也列在模板最后，与服务端 importColumns 同序')
  // 每一列的中文写法必须与服务端 handlers_config.go 的别名逐字一致，否则中文模板传回去会报缺列。
  assert.deepEqual(
    zh,
    REQUIRED_COLUMNS.map((column) => COLUMN_ALIASES[column][0]),
  )
  assert.equal(new Set(zh).size, zh.length, '中文表头不能有两列写成同一个词')
  assert.equal(new Set(en).size, en.length)
})

test('模板 CSV：只有表头语言不同，示例行与列数完全相同', () => {
  const zh = buildTemplateCsv('zh').split('\n')
  const en = buildTemplateCsv('en').split('\n')
  assert.equal(zh.length, en.length, '两种模板行数一致')
  assert.equal(zh[0], templateHeader('zh').join(','))
  assert.equal(en[0], templateHeader('en').join(','))
  assert.deepEqual(zh.slice(1), en.slice(1), '示例行共用，只有表头换语言')
  for (const line of zh) {
    assert.equal(line.split(',').length, REQUIRED_COLUMNS.length, '每行都是 13 列')
  }
})

test('模板文件名带语言后缀，下载下来分得清中英', () => {
  assert.equal(templateFileName('zh'), 'entries-template-zh.csv')
  assert.equal(templateFileName('en'), 'entries-template-en.csv')
  assert.notEqual(templateFileName('zh'), templateFileName('en'), '两个文件名不能重名')
})

// ── 表头识别：英文规范名与中文别名同等对待 ────────────────────────────────────

test('lookupImportColumn 认英文名、中文别名，并容错全角 / BOM / 首尾空格', () => {
  assert.equal(lookupImportColumn('event_code'), 'event_code')
  assert.equal(lookupImportColumn('项目编码'), 'event_code')
  assert.equal(lookupImportColumn('小项编码'), 'event_code')
  assert.equal(lookupImportColumn('队员名单'), 'member_names')
  assert.equal(lookupImportColumn('队伍'), 'squad', '队伍列的中文表头')
  assert.equal(lookupImportColumn('EVENT_CODE'), 'event_code', '大小写不敏感')
  assert.equal(lookupImportColumn('  event_code  '), 'event_code', '首尾空格')
  assert.equal(lookupImportColumn('\uFEFF项目编码'), 'event_code', 'BOM 粘在第一格列名上')
  assert.equal(lookupImportColumn('\u3000姓名 '), 'athlete_name', '中文输入法的全角空格')
  assert.equal(lookupImportColumn('ＥＶＥＮＴ＿ＣＯＤＥ'), 'event_code', '全角字母与全角下划线')
  assert.equal(lookupImportColumn('报名项目'), undefined, '认不出的多余列忽略')
  assert.equal(lookupImportColumn(''), undefined)
})

test('importColumnIndex 中英混用每列各自认；同一列写两遍直接拦下', () => {
  const index = importColumnIndex([
    'event_code', '组别', 'team_code', '姓名', '证件号', '性别', '年龄', '号码布', '种子', '批次', '状态', '队员名单', '队伍',
  ])
  assert.equal(index.get('event_code'), 0)
  assert.equal(index.get('category'), 1)
  assert.equal(index.get('member_names'), 11, '下标按混用后的实际列序取')
  assert.equal(index.get('squad'), 12, '队伍列在最后')
  assert.equal(index.size, REQUIRED_COLUMNS.length)

  // 老表格（12 列、没有队伍列）照样认得：队伍是可选列，缺列 = 不区分队伍（老流程一个字不用改）。
  const legacy = importColumnIndex([
    'event_code', 'category', 'team_code', 'athlete_name', 'id_card', 'gender', 'age', 'bib', 'seed', 'heat', 'status', 'member_names',
  ])
  assert.equal(legacy.size, REQUIRED_COLUMNS.length - 1)
  assert.equal(legacy.has('squad'), false)

  for (const header of [
    ['event_code', '项目编码', 'category', 'team_code', 'athlete_name', 'bib', 'seed', 'status', 'member_names'],
    ['event_code', 'event_code', 'category', 'team_code', 'athlete_name', 'bib', 'seed', 'status', 'member_names'],
  ]) {
    assert.throws(() => importColumnIndex(header), /表头重复/, '同一列两种写法要拦下，不能静默丢一列')
  }
})

test('缺列提示中英并列，且点到表头行', () => {
  const message = missingColumnMessage('athlete_name')
  assert.match(message, /缺少列 athlete_name（姓名）/)
  assert.match(message, /第 1 行/)
  assert.match(message, /中文与英文表头都认/)
})

// ImportSection 的四个下载按钮：现场人多手快，文案必须一眼能分（SFC 跑不进 node --test，
// 这里用源码契约断言接线：按钮确实在、点了确实按语言下载）。
//
// 两种模板：单表 CSV（「中文表头 / 英文表头」，前端本地拼）与分工作表 XLSX
// （「分工作表 · 中文表头 / 分工作表 · 英文表头」，由服务端按当前小项与组别生成）。
test('ImportSection 有四个模板下载按钮：单表两套表头 + 分工作表两套表头', () => {
  const source = readFileSync(new URL('../components/baseData/ImportSection.vue', import.meta.url), 'utf8')
  assert.match(source, />\s*<MxIcon name="export"[^<]*\/>\s*中文表头\s*</, '有「中文表头」按钮')
  assert.match(source, />\s*<MxIcon name="export"[^<]*\/>\s*英文表头\s*</, '有「英文表头」按钮')
  assert.match(source, />\s*<MxIcon name="export"[^<]*\/>\s*分工作表 · 中文表头\s*</, '有「分工作表 · 中文表头」按钮')
  assert.match(source, />\s*<MxIcon name="export"[^<]*\/>\s*分工作表 · 英文表头\s*</, '有「分工作表 · 英文表头」按钮')
  assert.match(source, /downloadTemplate\('zh'\)/)
  assert.match(source, /downloadTemplate\('en'\)/)
  assert.match(source, /downloadSheetTemplate\('zh'\)/)
  assert.match(source, /downloadSheetTemplate\('en'\)/)
  assert.match(source, /saveBlob\(blob, templateFileName\(language\)\)/, '单表文件名按语言取，两个文件不重名')
  assert.match(source, /saveBlob\(blob, templateSheetFileName\(language\)\)/, '分工作表文件名按语言取')
  assert.match(source, /buildTemplateCsv\(language\)/)
  // 分工作表模板必须走服务端（浏览器里造不出多工作表 xlsx），且失败时要把服务端那句话显示出来。
  assert.match(source, /data\.downloadEntriesTemplate\(language\)/)
  assert.match(source, /templateError\.value = caught instanceof Error \? caught\.message : /)
  assert.doesNotMatch(source, /entries-template\.csv/, '不再用不分语言的老文件名')
  // 分工作表模板由服务端生成、以 Blob 交回本地存盘：不能把接口地址直接塞进 <a href>
  // （服务端拒绝时回的是 JSON 错误体，浏览器会把那份 JSON 存成一个「下载成功」的文件）。
  assert.match(source, /URL\.createObjectURL\(blob\)/)
})