import type {
  AthleteStanding,
  Event,
  EventResultGroup,
  EventResultRow,
  SnapshotMessage,
  StandingRow,
  Team,
} from '@/shared'
import type { DisplaySettings } from './guards'
import { DEFAULT_ROTATE_SECONDS } from './guards'

/**
 * 后端未就绪时的降级数据（任务要求：降级 mock 并标注「示例数据」）。
 *
 * 数值是手写的固定值而不是随机数：现场调试时截图对比不会因为每次刷新而变。
 */

const TEAM_NAMES: readonly string[] = [
  '第一分公司',
  '机关本部',
  '第二分公司',
  '第三分公司',
  '第四分公司',
  '第五分公司',
  '第六分公司',
]

function team(index: number, code: string): Team {
  const name = TEAM_NAMES[index] ?? `单位${index + 1}`
  return {
    id: index + 1,
    code,
    name,
    shortName: null,
    logoPath: null,
    color: null,
    sortOrder: index,
    active: true,
  }
}

const MOCK_TEAMS: Team[] = [
  team(0, 'T01'),
  team(1, 'T02'),
  team(2, 'T03'),
  team(3, 'T04'),
  team(4, 'T05'),
  team(5, 'T06'),
  team(6, 'T07'),
]

interface StandingSeed {
  rank: number
  totalPoints: number
  gold: number
  silver: number
  bronze: number
  rankChange: number | null
}

const STANDING_SEEDS: readonly StandingSeed[] = [
  { rank: 1, totalPoints: 186, gold: 8, silver: 5, bronze: 3, rankChange: 1 },
  { rank: 2, totalPoints: 172, gold: 6, silver: 7, bronze: 4, rankChange: -1 },
  { rank: 3, totalPoints: 158, gold: 5, silver: 4, bronze: 8, rankChange: 0 },
  { rank: 4, totalPoints: 141, gold: 4, silver: 5, bronze: 6, rankChange: 2 },
  { rank: 5, totalPoints: 127, gold: 3, silver: 4, bronze: 5, rankChange: null },
  { rank: 6, totalPoints: 103, gold: 2, silver: 3, bronze: 4, rankChange: 0 },
  { rank: 7, totalPoints: 95, gold: 2, silver: 2, bronze: 2, rankChange: -2 },
]

function buildStandings(): StandingRow[] {
  return MOCK_TEAMS.map((item, index) => {
    const seed = STANDING_SEEDS[index] ?? STANDING_SEEDS[STANDING_SEEDS.length - 1]
    const row = seed ?? { rank: index + 1, totalPoints: 0, gold: 0, silver: 0, bronze: 0, rankChange: null }
    return {
      teamId: item.id,
      teamCode: item.code,
      teamName: item.name,
      shortName: item.shortName,
      color: item.color,
      logoPath: item.logoPath,
      rank: row.rank,
      gold: row.gold,
      silver: row.silver,
      bronze: row.bronze,
      medalTotal: row.gold + row.silver + row.bronze,
      totalPoints: row.totalPoints,
      rankChange: row.rankChange,
    }
  })
}

function buildEvents(): Event[] {
  const seeds: readonly [string, string, Event['resultType'], Event['compare']][] = [
    ['E1001', '男子 100 米', 'time', 'asc'],
    ['E1002', '女子 100 米', 'time', 'asc'],
    ['E2001', '男子跳远', 'distance', 'desc'],
    ['E3001', '女子 4×100 米接力', 'time', 'asc'],
    ['E4001', '拔河', 'count', 'desc'],
  ]
  return seeds.map(([code, name, resultType, compare], index) => ({
    id: index + 1,
    sportId: 1,
    code,
    name,
    eventType: index === 3 || index === 4 ? 'team' : 'individual',
    resultMode: 'auto',
    resultType,
    compare,
    recordEligible: index < 3,
    scored: true,
    // 示例大屏里每个小项都正常结算奖牌（缺字段时 guards 也按 true 处理）。
    awardMedals: true,
    multiplier: 1,
    status: index < 3 ? 'published' : 'finished',
    scheduledAt: null,
    venue: null,
    sortOrder: index,
    remark: null,
    avgMode: 'valid',
  }))
}

interface ResultSeed {
  rank: number
  teamIndex: number
  athlete: string
  resultText: string
  resultValue: number
}

function buildRows(seeds: readonly ResultSeed[], unit: string): EventResultRow[] {
  return seeds.map((seed, index) => {
    const team = MOCK_TEAMS[seed.teamIndex]
    return {
      entryId: (seed.rank + 1) * 100 + index,
      rank: seed.rank,
      teamId: team?.id ?? 0,
      teamCode: team?.code ?? '',
      teamName: team?.name ?? '',
      shortName: team?.shortName ?? null,
      logoPath: team?.logoPath ?? null,
      athleteId: index + 1,
      athleteName: seed.athlete,
      memberNames: null,
      resultText: seed.resultText,
      resultValue: seed.resultValue,
      unit,
      isTie: false,
      status: 'ok',
    }
  })
}

function buildLatestResults(): EventResultGroup[] {
  return [
    {
      eventId: 1,
      eventCode: 'E1001',
      eventName: '男子 100 米',
      categoryId: 1,
      categoryName: '青年组',
      publishedAt: '2026-09-09T15:42:00+08:00',
      rows: buildRows(
        [
          { rank: 1, teamIndex: 0, athlete: '张伟', resultText: '11.58', resultValue: 11.58 },
          { rank: 2, teamIndex: 2, athlete: '李强', resultText: '11.72', resultValue: 11.72 },
          { rank: 3, teamIndex: 1, athlete: '王磊', resultText: '11.85', resultValue: 11.85 },
          { rank: 4, teamIndex: 4, athlete: '刘洋', resultText: '11.94', resultValue: 11.94 },
          { rank: 5, teamIndex: 3, athlete: '陈晨', resultText: '12.03', resultValue: 12.03 },
          { rank: 6, teamIndex: 5, athlete: '赵鹏', resultText: '12.15', resultValue: 12.15 },
        ],
        's',
      ),
    },
    {
      eventId: 2,
      eventCode: 'E1002',
      eventName: '女子 100 米',
      categoryId: 2,
      categoryName: '青年组',
      publishedAt: '2026-09-09T15:10:00+08:00',
      rows: buildRows(
        [
          { rank: 1, teamIndex: 1, athlete: '李娜', resultText: '13.04', resultValue: 13.04 },
          { rank: 2, teamIndex: 0, athlete: '孙悦', resultText: '13.21', resultValue: 13.21 },
          { rank: 3, teamIndex: 3, athlete: '周敏', resultText: '13.36', resultValue: 13.36 },
          { rank: 4, teamIndex: 6, athlete: '吴倩', resultText: '13.48', resultValue: 13.48 },
          { rank: 5, teamIndex: 2, athlete: '郑爽', resultText: '13.55', resultValue: 13.55 },
          { rank: 6, teamIndex: 6, athlete: '冯雪', resultText: '13.62', resultValue: 13.62 },
        ],
        's',
      ),
    },
    {
      eventId: 3,
      eventCode: 'E2001',
      eventName: '男子跳远',
      categoryId: 3,
      categoryName: '中年组',
      publishedAt: '2026-09-09T14:35:00+08:00',
      rows: buildRows(
        [
          { rank: 1, teamIndex: 2, athlete: '黄涛', resultText: '6.42', resultValue: 6.42 },
          { rank: 2, teamIndex: 5, athlete: '徐斌', resultText: '6.18', resultValue: 6.18 },
          { rank: 3, teamIndex: 0, athlete: '马超', resultText: '6.05', resultValue: 6.05 },
          { rank: 4, teamIndex: 3, athlete: '朱峰', resultText: '5.96', resultValue: 5.96 },
          { rank: 5, teamIndex: 1, athlete: '胡军', resultText: '5.88', resultValue: 5.88 },
          { rank: 6, teamIndex: 4, athlete: '林凯', resultText: '5.71', resultValue: 5.71 },
        ],
        'm',
      ),
    },
  ]
}

const ATHLETE_SEEDS: readonly [string, number, number, number, number, number][] = [
  ['张伟', 0, 42, 2, 1, 0],
  ['李娜', 1, 38, 2, 0, 1],
  ['李强', 2, 34, 1, 2, 0],
  ['孙悦', 0, 30, 1, 1, 1],
  ['黄涛', 2, 28, 1, 0, 2],
  ['王磊', 1, 26, 1, 1, 0],
  ['周敏', 3, 24, 1, 0, 1],
  ['刘洋', 4, 22, 0, 2, 1],
  ['徐斌', 5, 20, 1, 0, 1],
  ['陈晨', 3, 18, 0, 1, 2],
  ['马超', 0, 16, 0, 1, 1],
  ['吴倩', 6, 14, 0, 0, 2],
]

function buildAthletes(): AthleteStanding[] {
  return ATHLETE_SEEDS.map(([name, teamIndex, totalPoints, gold, silver, bronze], index) => {
    const item = MOCK_TEAMS[teamIndex]
    return {
      rank: index + 1,
      athleteId: index + 1,
      athleteName: name,
      gender: null,
      teamId: item?.id ?? 0,
      teamCode: item?.code ?? '',
      teamName: item?.name ?? '',
      shortName: item?.shortName ?? null,
      logoPath: item?.logoPath ?? null,
      totalPoints,
      gold,
      silver,
      bronze,
    }
  })
}

/**
 * 示例配置。单列出来是因为它比共享契约多「实时赛况」两个键（后端未就绪时也要能演示）：
 * 直接写在 SnapshotMessage 字面量里会被多余属性检查拦下。
 */
const MOCK_SETTINGS: DisplaySettings = {
  event: {
    name: '2026 职工运动会',
    subtitle: null,
    host: '示例组委会',
    logoPath: null,
    primaryColor: '#4fd8ff',
  },
  display: {
    background: null,
    logo: null,
    title: '2026 职工运动会',
    subtitle: '积分榜 · 示例数据',
    primaryColor: '#4fd8ff',
    // 与服务端默认一致（dto/settings.go 的 display.rotate_seconds 兜底 15）。
    rotateSeconds: DEFAULT_ROTATE_SECONDS,
    // 示例数据里有 3 个已完成项目，取前两个演示双栏分栏。
    liveEvents: [1, 2],
    liveSource: 'manual',
  },
  standings: {
    individualToTeamWeight: 1,
    rankingMode: 'points',
    showIndividualBoard: true,
    showIndividualMedals: true,
  },
  defaultProfileId: null,
  requireApproval: false,
}

export function createMockSnapshot(): SnapshotMessage {
  return {
    // version 固定 0 且不写入缓存：真实快照一到就能直接覆盖，不会因为版本号更大而被丢弃。
    version: 0,
    settings: MOCK_SETTINGS,
    teams: MOCK_TEAMS,
    events: buildEvents(),
    standings: buildStandings(),
    records: [],
    latestResults: buildLatestResults(),
  }
}

export function createMockAthletes(): AthleteStanding[] {
  return buildAthletes()
}