export const API_VERSION = '2026-demo-v1';

export type GroupCode = 'A' | 'B' | 'C' | 'D' | 'E';
export type ItemType = 'team' | 'match' | 'stadium' | 'sticker';
export type CollectionRarity = 'common' | 'rare' | 'epic' | 'legendary';
export type MatchStage = 'group' | 'round-of-32' | 'round-of-16' | 'quarter-final' | 'semi-final' | 'third-place' | 'final';
export type MatchStatus = 'scheduled' | 'live' | 'final';
export type BadgeTier = 'bronze' | 'silver' | 'gold' | 'platinum';
export type ChallengeKind = 'collection' | 'trivia' | 'prediction' | 'memory' | 'mixed';
export type ChallengeMetric =
  | 'collect_any'
  | 'collect_all_content_ids'
  | 'answer_trivia_count'
  | 'submit_giant_killing_prediction'
  | 'add_memory_count'
  | 'complete_starter_actions';
export type MemoryMood = 'joy' | 'nerves' | 'shock' | 'pride';

export interface Team {
  id: string;
  name: string;
  code: string;
  group: GroupCode;
  confederation: string;
  fifaRankSeed: number;
  primaryColor: string;
  qualifiedStatus: 'host' | 'qualified' | 'demo';
}

export interface Stadium {
  id: string;
  name: string;
  city: string;
  country: 'Canada' | 'Mexico' | 'United States';
  capacity: number;
  imageHint: string;
}

export interface Match {
  id: string;
  stage: MatchStage;
  group?: GroupCode;
  kickoffISO: string;
  stadiumId: string;
  homeTeamId: string;
  awayTeamId: string;
  underdogTeamId?: string;
  status: MatchStatus;
  result?: {
    homeGoals: number;
    awayGoals: number;
    winnerTeamId?: string;
  };
}

export interface TriviaOption {
  id: string;
  label: string;
}

export interface TriviaQuestion {
  id: string;
  day: string;
  category: 'history' | 'stadiums' | 'teams' | 'rules' | 'culture';
  question: string;
  options: TriviaOption[];
  correctOptionId: string;
  explanation: string;
  points: number;
}

export interface CollectionItem {
  id: string;
  itemType: ItemType;
  contentId: string;
  rarity: CollectionRarity;
  title: string;
  description: string;
  imageHint: string;
  setId: string;
}

export interface BadgeDefinition {
  id: string;
  name: string;
  description: string;
  icon: string;
  tier: BadgeTier;
  prestige: number;
}

export interface ChallengeDefinition {
  id: string;
  title: string;
  description: string;
  kind: ChallengeKind;
  metric: ChallengeMetric;
  target: number;
  points: number;
  badgeId?: string;
  itemType?: ItemType;
  contentIds?: string[];
}

export interface UserProfile {
  id: string;
  displayName: string;
  country: string;
  createdAt: string;
  points: number;
  level: number;
  streakDays: number;
  lastActiveDate: string;
}

export interface UserCollectionEntry {
  id: string;
  itemType: ItemType;
  contentId: string;
  collectedAt: string;
  pointsAwarded: number;
  source: 'manual' | 'demo-script' | 'system';
}

export interface TriviaAnswer {
  questionId: string;
  selectedOptionId: string;
  correct: boolean;
  answeredAt: string;
  pointsAwarded: number;
}

export interface Prediction {
  id: string;
  userId: string;
  matchId: string;
  predictedWinnerTeamId: string;
  confidence: 1 | 2 | 3 | 4 | 5;
  giantKilling: boolean;
  status: 'submitted' | 'settled';
  correct?: boolean;
  createdAt: string;
  updatedAt: string;
  pointsAwarded: number;
}

export interface PassportMemory {
  id: string;
  title: string;
  note: string;
  matchId?: string;
  mood: MemoryMood;
  createdAt: string;
  pointsAwarded: number;
}

export interface BadgeAward {
  badgeId: string;
  awardedAt: string;
  reason: string;
}

export interface ChallengeProgress {
  challengeId: string;
  current: number;
  target: number;
  complete: boolean;
  completedAt?: string;
}

export interface AchievementEvent {
  id: string;
  type: 'points' | 'badge' | 'challenge' | 'collection' | 'trivia' | 'prediction' | 'memory';
  title: string;
  description: string;
  points: number;
  createdAt: string;
}

export interface LeaderboardSeedEntry {
  userId: string;
  displayName: string;
  country: string;
  points: number;
  badges: number;
  completedChallenges: number;
  avatarEmoji: string;
}

export interface LeaderboardEntry extends LeaderboardSeedEntry {
  rank: number;
  isCurrentUser?: boolean;
}

export interface PassportStats {
  totalCollections: number;
  teamsCollected: number;
  stadiumsCollected: number;
  matchesLogged: number;
  stickersCollected: number;
  correctTriviaAnswers: number;
  predictionsSubmitted: number;
  giantKillingsPredicted: number;
  memoriesCreated: number;
  completedChallenges: number;
  rank: number;
}

export interface PassportState {
  user: UserProfile;
  collections: UserCollectionEntry[];
  triviaAnswers: TriviaAnswer[];
  predictions: Prediction[];
  memories: PassportMemory[];
  badges: BadgeAward[];
  challengeProgress: ChallengeProgress[];
  achievements: AchievementEvent[];
  leaderboard: LeaderboardEntry[];
  stats: PassportStats;
}

export interface ContentResponse {
  version: string;
  teams: Team[];
  stadiums: Stadium[];
  matches: Match[];
  triviaQuestions: TriviaQuestion[];
  collectionItems: CollectionItem[];
  badges: BadgeDefinition[];
  challenges: ChallengeDefinition[];
}

export interface ApiErrorResponse {
  error: {
    code: string;
    message: string;
    details?: unknown;
  };
}

export interface CreateUserRequest {
  displayName: string;
  country?: string;
}

export interface CreateUserResponse {
  user: UserProfile;
  passport: PassportState;
}

export interface CollectItemRequest {
  userId: string;
  itemType: ItemType;
  contentId: string;
  source?: 'manual' | 'demo-script' | 'system';
}

export interface AnswerTriviaRequest {
  userId: string;
  selectedOptionId: string;
}

export interface SubmitPredictionRequest {
  userId: string;
  matchId: string;
  predictedWinnerTeamId: string;
  confidence: 1 | 2 | 3 | 4 | 5;
}

export interface AddMemoryRequest {
  userId: string;
  title: string;
  note: string;
  matchId?: string;
  mood: MemoryMood;
}

export interface ActionResponse {
  passport: PassportState;
  achievementEvents: AchievementEvent[];
  message: string;
}

export interface LeaderboardResponse {
  leaderboard: LeaderboardEntry[];
}

export const seedTeams: Team[] = [
  {
    id: 'mexico',
    name: 'Mexico',
    code: 'MEX',
    group: 'A',
    confederation: 'CONCACAF',
    fifaRankSeed: 14,
    primaryColor: '#006847',
    qualifiedStatus: 'host'
  },
  {
    id: 'canada',
    name: 'Canada',
    code: 'CAN',
    group: 'A',
    confederation: 'CONCACAF',
    fifaRankSeed: 48,
    primaryColor: '#d80621',
    qualifiedStatus: 'host'
  },
  {
    id: 'japan',
    name: 'Japan',
    code: 'JPN',
    group: 'A',
    confederation: 'AFC',
    fifaRankSeed: 18,
    primaryColor: '#003f9f',
    qualifiedStatus: 'demo'
  },
  {
    id: 'morocco',
    name: 'Morocco',
    code: 'MAR',
    group: 'A',
    confederation: 'CAF',
    fifaRankSeed: 13,
    primaryColor: '#c1272d',
    qualifiedStatus: 'demo'
  },
  {
    id: 'england',
    name: 'England',
    code: 'ENG',
    group: 'B',
    confederation: 'UEFA',
    fifaRankSeed: 5,
    primaryColor: '#102b5c',
    qualifiedStatus: 'demo'
  },
  {
    id: 'usa',
    name: 'USA',
    code: 'USA',
    group: 'B',
    confederation: 'CONCACAF',
    fifaRankSeed: 11,
    primaryColor: '#1f4aa8',
    qualifiedStatus: 'host'
  },
  {
    id: 'iran',
    name: 'Iran',
    code: 'IRN',
    group: 'B',
    confederation: 'AFC',
    fifaRankSeed: 21,
    primaryColor: '#239f40',
    qualifiedStatus: 'demo'
  },
  {
    id: 'wales',
    name: 'Wales',
    code: 'WAL',
    group: 'B',
    confederation: 'UEFA',
    fifaRankSeed: 29,
    primaryColor: '#c8102e',
    qualifiedStatus: 'demo'
  },
  {
    id: 'argentina',
    name: 'Argentina',
    code: 'ARG',
    group: 'C',
    confederation: 'CONMEBOL',
    fifaRankSeed: 1,
    primaryColor: '#75aadb',
    qualifiedStatus: 'demo'
  },
  {
    id: 'senegal',
    name: 'Senegal',
    code: 'SEN',
    group: 'C',
    confederation: 'CAF',
    fifaRankSeed: 17,
    primaryColor: '#00853f',
    qualifiedStatus: 'demo'
  },
  {
    id: 'scotland',
    name: 'Scotland',
    code: 'SCO',
    group: 'C',
    confederation: 'UEFA',
    fifaRankSeed: 36,
    primaryColor: '#005eb8',
    qualifiedStatus: 'demo'
  },
  {
    id: 'saudi-arabia',
    name: 'Saudi Arabia',
    code: 'KSA',
    group: 'C',
    confederation: 'AFC',
    fifaRankSeed: 54,
    primaryColor: '#006c35',
    qualifiedStatus: 'demo'
  },
  {
    id: 'france',
    name: 'France',
    code: 'FRA',
    group: 'D',
    confederation: 'UEFA',
    fifaRankSeed: 2,
    primaryColor: '#1d428a',
    qualifiedStatus: 'demo'
  },
  {
    id: 'brazil',
    name: 'Brazil',
    code: 'BRA',
    group: 'D',
    confederation: 'CONMEBOL',
    fifaRankSeed: 4,
    primaryColor: '#ffdf00',
    qualifiedStatus: 'demo'
  },
  {
    id: 'australia',
    name: 'Australia',
    code: 'AUS',
    group: 'D',
    confederation: 'AFC',
    fifaRankSeed: 27,
    primaryColor: '#ffcd00',
    qualifiedStatus: 'demo'
  },
  {
    id: 'ghana',
    name: 'Ghana',
    code: 'GHA',
    group: 'D',
    confederation: 'CAF',
    fifaRankSeed: 60,
    primaryColor: '#fcd116',
    qualifiedStatus: 'demo'
  },
  {
    id: 'spain',
    name: 'Spain',
    code: 'ESP',
    group: 'E',
    confederation: 'UEFA',
    fifaRankSeed: 8,
    primaryColor: '#c60b1e',
    qualifiedStatus: 'demo'
  },
  {
    id: 'germany',
    name: 'Germany',
    code: 'GER',
    group: 'E',
    confederation: 'UEFA',
    fifaRankSeed: 16,
    primaryColor: '#000000',
    qualifiedStatus: 'demo'
  },
  {
    id: 'south-korea',
    name: 'South Korea',
    code: 'KOR',
    group: 'E',
    confederation: 'AFC',
    fifaRankSeed: 23,
    primaryColor: '#c60c30',
    qualifiedStatus: 'demo'
  },
  {
    id: 'nigeria',
    name: 'Nigeria',
    code: 'NGA',
    group: 'E',
    confederation: 'CAF',
    fifaRankSeed: 31,
    primaryColor: '#008751',
    qualifiedStatus: 'demo'
  }
];

export const seedStadiums: Stadium[] = [
  {
    id: 'metlife-stadium',
    name: 'MetLife Stadium',
    city: 'East Rutherford, New Jersey',
    country: 'United States',
    capacity: 82500,
    imageHint: 'New York/New Jersey skyline stamp'
  },
  {
    id: 'sofi-stadium',
    name: 'SoFi Stadium',
    city: 'Inglewood, California',
    country: 'United States',
    capacity: 70240,
    imageHint: 'California roof halo stamp'
  },
  {
    id: 'att-stadium',
    name: 'AT&T Stadium',
    city: 'Arlington, Texas',
    country: 'United States',
    capacity: 80000,
    imageHint: 'Texas star night-game stamp'
  },
  {
    id: 'mercedes-benz-stadium',
    name: 'Mercedes-Benz Stadium',
    city: 'Atlanta, Georgia',
    country: 'United States',
    capacity: 71000,
    imageHint: 'Atlanta aperture roof stamp'
  },
  {
    id: 'nrg-stadium',
    name: 'NRG Stadium',
    city: 'Houston, Texas',
    country: 'United States',
    capacity: 72220,
    imageHint: 'Houston energy beam stamp'
  },
  {
    id: 'lincoln-financial-field',
    name: 'Lincoln Financial Field',
    city: 'Philadelphia, Pennsylvania',
    country: 'United States',
    capacity: 67594,
    imageHint: 'Philadelphia liberty bell stamp'
  },
  {
    id: 'lumen-field',
    name: 'Lumen Field',
    city: 'Seattle, Washington',
    country: 'United States',
    capacity: 68740,
    imageHint: 'Seattle soundwave stamp'
  },
  {
    id: 'levis-stadium',
    name: "Levi's Stadium",
    city: 'Santa Clara, California',
    country: 'United States',
    capacity: 68500,
    imageHint: 'Bay Area gold rush stamp'
  },
  {
    id: 'hard-rock-stadium',
    name: 'Hard Rock Stadium',
    city: 'Miami Gardens, Florida',
    country: 'United States',
    capacity: 65326,
    imageHint: 'Miami palm floodlights stamp'
  },
  {
    id: 'gillette-stadium',
    name: 'Gillette Stadium',
    city: 'Foxborough, Massachusetts',
    country: 'United States',
    capacity: 65878,
    imageHint: 'Boston colonial flag stamp'
  },
  {
    id: 'arrowhead-stadium',
    name: 'Arrowhead Stadium',
    city: 'Kansas City, Missouri',
    country: 'United States',
    capacity: 76416,
    imageHint: 'Kansas City noise meter stamp'
  },
  {
    id: 'bc-place',
    name: 'BC Place',
    city: 'Vancouver, British Columbia',
    country: 'Canada',
    capacity: 54500,
    imageHint: 'Vancouver mountain dome stamp'
  },
  {
    id: 'bmo-field',
    name: 'BMO Field',
    city: 'Toronto, Ontario',
    country: 'Canada',
    capacity: 45000,
    imageHint: 'Toronto lakefront stamp'
  },
  {
    id: 'estadio-azteca',
    name: 'Estadio Azteca',
    city: 'Mexico City',
    country: 'Mexico',
    capacity: 87523,
    imageHint: 'Azteca cathedral stamp'
  },
  {
    id: 'estadio-akron',
    name: 'Estadio Akron',
    city: 'Guadalajara',
    country: 'Mexico',
    capacity: 49850,
    imageHint: 'Guadalajara volcano stamp'
  },
  {
    id: 'estadio-bbva',
    name: 'Estadio BBVA',
    city: 'Monterrey',
    country: 'Mexico',
    capacity: 53500,
    imageHint: 'Monterrey mountain stamp'
  }
];

export const seedMatches: Match[] = [
  {
    id: 'match-mexico-canada',
    stage: 'group',
    group: 'A',
    kickoffISO: '2026-06-11T19:00:00.000Z',
    stadiumId: 'estadio-azteca',
    homeTeamId: 'mexico',
    awayTeamId: 'canada',
    underdogTeamId: 'canada',
    status: 'scheduled'
  },
  {
    id: 'match-japan-morocco',
    stage: 'group',
    group: 'A',
    kickoffISO: '2026-06-12T22:00:00.000Z',
    stadiumId: 'bc-place',
    homeTeamId: 'japan',
    awayTeamId: 'morocco',
    underdogTeamId: 'japan',
    status: 'scheduled'
  },
  {
    id: 'match-england-usa',
    stage: 'group',
    group: 'B',
    kickoffISO: '2026-06-13T01:00:00.000Z',
    stadiumId: 'metlife-stadium',
    homeTeamId: 'england',
    awayTeamId: 'usa',
    underdogTeamId: 'usa',
    status: 'scheduled'
  },
  {
    id: 'match-england-iran',
    stage: 'group',
    group: 'B',
    kickoffISO: '2026-06-17T20:00:00.000Z',
    stadiumId: 'nrg-stadium',
    homeTeamId: 'england',
    awayTeamId: 'iran',
    underdogTeamId: 'iran',
    status: 'scheduled'
  },
  {
    id: 'match-wales-england',
    stage: 'group',
    group: 'B',
    kickoffISO: '2026-06-22T19:00:00.000Z',
    stadiumId: 'lincoln-financial-field',
    homeTeamId: 'wales',
    awayTeamId: 'england',
    underdogTeamId: 'wales',
    status: 'scheduled'
  },
  {
    id: 'match-argentina-senegal',
    stage: 'group',
    group: 'C',
    kickoffISO: '2026-06-14T20:00:00.000Z',
    stadiumId: 'att-stadium',
    homeTeamId: 'argentina',
    awayTeamId: 'senegal',
    underdogTeamId: 'senegal',
    status: 'scheduled'
  },
  {
    id: 'match-brazil-ghana',
    stage: 'group',
    group: 'D',
    kickoffISO: '2026-06-15T23:00:00.000Z',
    stadiumId: 'hard-rock-stadium',
    homeTeamId: 'brazil',
    awayTeamId: 'ghana',
    underdogTeamId: 'ghana',
    status: 'scheduled'
  },
  {
    id: 'match-france-australia',
    stage: 'group',
    group: 'D',
    kickoffISO: '2026-06-16T23:00:00.000Z',
    stadiumId: 'sofi-stadium',
    homeTeamId: 'france',
    awayTeamId: 'australia',
    underdogTeamId: 'australia',
    status: 'scheduled'
  },
  {
    id: 'match-spain-germany',
    stage: 'group',
    group: 'E',
    kickoffISO: '2026-06-18T20:00:00.000Z',
    stadiumId: 'mercedes-benz-stadium',
    homeTeamId: 'spain',
    awayTeamId: 'germany',
    underdogTeamId: 'germany',
    status: 'scheduled'
  },
  {
    id: 'match-south-korea-nigeria',
    stage: 'group',
    group: 'E',
    kickoffISO: '2026-06-19T23:00:00.000Z',
    stadiumId: 'lumen-field',
    homeTeamId: 'south-korea',
    awayTeamId: 'nigeria',
    underdogTeamId: 'nigeria',
    status: 'scheduled'
  }
];

export const seedTriviaQuestions: TriviaQuestion[] = [
  {
    id: 'trivia-stadium-eng-usa',
    day: '2026-06-13',
    category: 'stadiums',
    question: 'Which stadium hosts the demo fixture England vs USA?',
    options: [
      { id: 'metlife', label: 'MetLife Stadium' },
      { id: 'azteca', label: 'Estadio Azteca' },
      { id: 'bc-place', label: 'BC Place' },
      { id: 'sofi', label: 'SoFi Stadium' }
    ],
    correctOptionId: 'metlife',
    explanation: 'The demo fixture England vs USA is seeded at MetLife Stadium in New Jersey.',
    points: 30
  },
  {
    id: 'trivia-hosts-2026',
    day: '2026-06-14',
    category: 'culture',
    question: 'Which three countries are hosting the 2026 FIFA World Cup?',
    options: [
      { id: 'us-can-mex', label: 'United States, Canada, and Mexico' },
      { id: 'us-bra-arg', label: 'United States, Brazil, and Argentina' },
      { id: 'mex-can-eng', label: 'Mexico, Canada, and England' },
      { id: 'spa-por-mor', label: 'Spain, Portugal, and Morocco' }
    ],
    correctOptionId: 'us-can-mex',
    explanation: 'The 2026 tournament is jointly hosted by the United States, Canada, and Mexico.',
    points: 25
  },
  {
    id: 'trivia-group-win-points',
    day: '2026-06-15',
    category: 'rules',
    question: 'How many points does a team receive for a group-stage win?',
    options: [
      { id: 'one', label: '1 point' },
      { id: 'two', label: '2 points' },
      { id: 'three', label: '3 points' },
      { id: 'four', label: '4 points' }
    ],
    correctOptionId: 'three',
    explanation: 'A group-stage win is worth 3 points; a draw is worth 1 point.',
    points: 20
  },
  {
    id: 'trivia-azteca-history',
    day: '2026-06-16',
    category: 'history',
    question: 'Which legendary Mexico City venue appears in the stadium collection?',
    options: [
      { id: 'azteca', label: 'Estadio Azteca' },
      { id: 'maracana', label: 'Maracanã' },
      { id: 'wembley', label: 'Wembley Stadium' },
      { id: 'san-siro', label: 'San Siro' }
    ],
    correctOptionId: 'azteca',
    explanation: 'Estadio Azteca is one of the iconic venues represented in the passport.',
    points: 20
  },
  {
    id: 'trivia-underdog',
    day: '2026-06-17',
    category: 'teams',
    question: 'In the demo prediction model, what is a “giant killing”?',
    options: [
      { id: 'favorite-win', label: 'The top seed wins comfortably' },
      { id: 'underdog-win', label: 'An underdog is predicted to beat a stronger opponent' },
      { id: 'draw', label: 'Both teams draw 0-0' },
      { id: 'penalty', label: 'A goalkeeper saves a penalty' }
    ],
    correctOptionId: 'underdog-win',
    explanation: 'A giant killing is the classic upset: the underdog beats the favourite.',
    points: 25
  },
  {
    id: 'trivia-sticker-book',
    day: '2026-06-18',
    category: 'culture',
    question: 'What does the virtual sticker collection recreate?',
    options: [
      { id: 'fantasy-lineup', label: 'A fantasy transfer market' },
      { id: 'sticker-album', label: 'The ritual of filling a tournament sticker album' },
      { id: 'stadium-map', label: 'A parking map' },
      { id: 'ticket-wallet', label: 'Only match ticket storage' }
    ],
    correctOptionId: 'sticker-album',
    explanation: 'The sticker collection mirrors the nostalgia of filling a World Cup sticker album.',
    points: 20
  }
];

const teamName = (teamId: string): string => seedTeams.find((team) => team.id === teamId)?.name ?? teamId;
const stadiumName = (stadiumId: string): string => seedStadiums.find((stadium) => stadium.id === stadiumId)?.name ?? stadiumId;

const teamCollectionItems: CollectionItem[] = seedTeams.map((team) => ({
  id: `collection-team-${team.id}`,
  itemType: 'team',
  contentId: team.id,
  rarity: team.qualifiedStatus === 'host' ? 'rare' : team.fifaRankSeed <= 5 ? 'epic' : 'common',
  title: team.name,
  description: `Stamp ${team.name} into your Group ${team.group} collection.`,
  imageHint: `${team.code} crest-inspired digital stamp`,
  setId: `group-${team.group.toLowerCase()}`
}));

const stadiumCollectionItems: CollectionItem[] = seedStadiums.map((stadium, index) => ({
  id: `collection-stadium-${stadium.id}`,
  itemType: 'stadium',
  contentId: stadium.id,
  rarity: index % 5 === 0 ? 'epic' : index % 3 === 0 ? 'rare' : 'common',
  title: stadium.name,
  description: `Collect the ${stadium.city} venue stamp.`,
  imageHint: stadium.imageHint,
  setId: 'stadium-tour'
}));

const matchCollectionItems: CollectionItem[] = seedMatches.map((match) => ({
  id: `collection-match-${match.id}`,
  itemType: 'match',
  contentId: match.id,
  rarity: match.underdogTeamId ? 'rare' : 'common',
  title: `${teamName(match.homeTeamId)} vs ${teamName(match.awayTeamId)}`,
  description: `Log the Group ${match.group ?? 'knockout'} match at ${stadiumName(match.stadiumId)}.`,
  imageHint: `Matchday card for ${teamName(match.homeTeamId)} vs ${teamName(match.awayTeamId)}`,
  setId: 'matchdays'
}));

const stickerCollectionItems: CollectionItem[] = [
  {
    id: 'collection-sticker-mascot-maple',
    itemType: 'sticker',
    contentId: 'sticker-mascot-maple',
    rarity: 'common',
    title: 'Maple Mascot',
    description: 'A cheerful Canada-host sticker for the virtual album.',
    imageHint: 'Mascot waving a maple-leaf scarf',
    setId: 'virtual-stickers'
  },
  {
    id: 'collection-sticker-azteca-night',
    itemType: 'sticker',
    contentId: 'sticker-azteca-night',
    rarity: 'epic',
    title: 'Azteca Under Lights',
    description: 'A night-match sticker inspired by Mexico City.',
    imageHint: 'Floodlights over Estadio Azteca',
    setId: 'virtual-stickers'
  },
  {
    id: 'collection-sticker-star-spangled-stand',
    itemType: 'sticker',
    contentId: 'sticker-star-spangled-stand',
    rarity: 'rare',
    title: 'Star-Spangled Stand',
    description: 'A USA host-city crowd sticker.',
    imageHint: 'Red, white, and blue supporters section',
    setId: 'virtual-stickers'
  },
  {
    id: 'collection-sticker-golden-boot',
    itemType: 'sticker',
    contentId: 'sticker-golden-boot',
    rarity: 'legendary',
    title: 'Golden Boot Chase',
    description: 'A premium sticker for fans tracking the tournament scorers.',
    imageHint: 'Golden boot on a confetti pitch',
    setId: 'virtual-stickers'
  },
  {
    id: 'collection-sticker-underdog-roar',
    itemType: 'sticker',
    contentId: 'sticker-underdog-roar',
    rarity: 'rare',
    title: 'Underdog Roar',
    description: 'A sticker celebrating giant-killing predictions.',
    imageHint: 'Underdog fans erupting behind the goal',
    setId: 'virtual-stickers'
  },
  {
    id: 'collection-sticker-passport-control',
    itemType: 'sticker',
    contentId: 'sticker-passport-control',
    rarity: 'common',
    title: 'Passport Control',
    description: 'The official-looking stamp that starts every collection page.',
    imageHint: 'Ink stamp with football seams',
    setId: 'virtual-stickers'
  }
];

export const seedCollectionItems: CollectionItem[] = [
  ...teamCollectionItems,
  ...stadiumCollectionItems,
  ...matchCollectionItems,
  ...stickerCollectionItems
];

export const groupBTeamIds = seedTeams.filter((team) => team.group === 'B').map((team) => team.id);
export const englandMatchIds = seedMatches
  .filter((match) => match.homeTeamId === 'england' || match.awayTeamId === 'england')
  .map((match) => match.id);
export const stadiumIds = seedStadiums.map((stadium) => stadium.id);

export const seedBadgeDefinitions: BadgeDefinition[] = [
  {
    id: 'badge-kickoff-passport',
    name: 'Kick-off Passport',
    description: 'Started the journey by completing the first cross-feature actions.',
    icon: '🛂',
    tier: 'bronze',
    prestige: 10
  },
  {
    id: 'badge-group-b-complete',
    name: 'Group B Complete',
    description: 'Collected every seeded Group B team.',
    icon: '✅',
    tier: 'silver',
    prestige: 25
  },
  {
    id: 'badge-stadium-tour',
    name: 'Stadium Tour',
    description: 'Collected every 2026 host stadium in the demo seed.',
    icon: '🏟️',
    tier: 'gold',
    prestige: 50
  },
  {
    id: 'badge-england-superfan',
    name: 'England Superfan',
    description: 'Logged every seeded England match.',
    icon: '🦁',
    tier: 'silver',
    prestige: 30
  },
  {
    id: 'badge-trivia-streak',
    name: 'Trivia Streak',
    description: 'Answered three daily World Cup trivia questions.',
    icon: '🧠',
    tier: 'silver',
    prestige: 30
  },
  {
    id: 'badge-giant-killer',
    name: 'Giant Killer',
    description: 'Predicted an underdog upset.',
    icon: '⚡',
    tier: 'gold',
    prestige: 45
  },
  {
    id: 'badge-sticker-rookie',
    name: 'Sticker Rookie',
    description: 'Collected five virtual stickers.',
    icon: '📒',
    tier: 'bronze',
    prestige: 15
  },
  {
    id: 'badge-memory-keeper',
    name: 'Memory Keeper',
    description: 'Saved a personal tournament memory.',
    icon: '📸',
    tier: 'bronze',
    prestige: 15
  }
];

export const seedChallengeDefinitions: ChallengeDefinition[] = [
  {
    id: 'challenge-kickoff-passport',
    title: 'Kick-off passport',
    description: 'Collect one item, answer trivia, submit one prediction, and save one memory.',
    kind: 'mixed',
    metric: 'complete_starter_actions',
    target: 4,
    points: 75,
    badgeId: 'badge-kickoff-passport'
  },
  {
    id: 'challenge-group-b-complete',
    title: 'Complete every Group B team',
    description: 'Collect England, USA, Iran, and Wales to finish the seeded Group B page.',
    kind: 'collection',
    metric: 'collect_all_content_ids',
    itemType: 'team',
    contentIds: groupBTeamIds,
    target: groupBTeamIds.length,
    points: 120,
    badgeId: 'badge-group-b-complete'
  },
  {
    id: 'challenge-stadium-tour',
    title: 'Collect all stadiums',
    description: 'Collect every stadium stamp from the 2026 host-city tour.',
    kind: 'collection',
    metric: 'collect_all_content_ids',
    itemType: 'stadium',
    contentIds: stadiumIds,
    target: stadiumIds.length,
    points: 250,
    badgeId: 'badge-stadium-tour'
  },
  {
    id: 'challenge-england-superfan',
    title: 'Watch all England matches',
    description: 'Log every seeded England group match in your passport.',
    kind: 'collection',
    metric: 'collect_all_content_ids',
    itemType: 'match',
    contentIds: englandMatchIds,
    target: englandMatchIds.length,
    points: 150,
    badgeId: 'badge-england-superfan'
  },
  {
    id: 'challenge-trivia-streak',
    title: 'Answer daily World Cup trivia',
    description: 'Answer three trivia questions to build a daily habit.',
    kind: 'trivia',
    metric: 'answer_trivia_count',
    target: 3,
    points: 90,
    badgeId: 'badge-trivia-streak'
  },
  {
    id: 'challenge-giant-killing',
    title: 'Predict a giant killing',
    description: 'Back an underdog to win one seeded fixture.',
    kind: 'prediction',
    metric: 'submit_giant_killing_prediction',
    target: 1,
    points: 80,
    badgeId: 'badge-giant-killer'
  },
  {
    id: 'challenge-sticker-rookie',
    title: 'Build a virtual sticker collection',
    description: 'Collect five virtual stickers for your album.',
    kind: 'collection',
    metric: 'collect_any',
    itemType: 'sticker',
    target: 5,
    points: 70,
    badgeId: 'badge-sticker-rookie'
  },
  {
    id: 'challenge-memory-keeper',
    title: 'Save a tournament memory',
    description: 'Write down one moment you want to remember.',
    kind: 'memory',
    metric: 'add_memory_count',
    target: 1,
    points: 50,
    badgeId: 'badge-memory-keeper'
  }
];

export const seedLeaderboardRivals: LeaderboardSeedEntry[] = [
  {
    userId: 'rival-samurai-blue',
    displayName: 'Samurai Blue Crew',
    country: 'Japan',
    points: 430,
    badges: 7,
    completedChallenges: 5,
    avatarEmoji: '🇯🇵'
  },
  {
    userId: 'rival-three-lions',
    displayName: 'Three Lions Away End',
    country: 'England',
    points: 315,
    badges: 5,
    completedChallenges: 4,
    avatarEmoji: '🏴'
  },
  {
    userId: 'rival-canuck-wall',
    displayName: 'Canuck Wall',
    country: 'Canada',
    points: 220,
    badges: 4,
    completedChallenges: 3,
    avatarEmoji: '🇨🇦'
  },
  {
    userId: 'rival-azteca-noise',
    displayName: 'Azteca Noise',
    country: 'Mexico',
    points: 155,
    badges: 3,
    completedChallenges: 2,
    avatarEmoji: '🇲🇽'
  },
  {
    userId: 'rival-underdog-union',
    displayName: 'Underdog Union',
    country: 'Global',
    points: 95,
    badges: 2,
    completedChallenges: 1,
    avatarEmoji: '⚡'
  },
  {
    userId: 'rival-sticker-kid',
    displayName: 'Sticker Kid',
    country: 'Global',
    points: 45,
    badges: 1,
    completedChallenges: 0,
    avatarEmoji: '📒'
  }
];

export function deriveLevel(points: number): number {
  if (points < 100) return 1;
  if (points < 250) return 2;
  if (points < 500) return 3;
  if (points < 900) return 4;
  return 5 + Math.floor((points - 900) / 400);
}

export function getCollectionKey(itemType: ItemType, contentId: string): string {
  return `${itemType}:${contentId}`;
}

export function getChallengeDefinition(challengeId: string): ChallengeDefinition | undefined {
  return seedChallengeDefinitions.find((challenge) => challenge.id === challengeId);
}

export function getBadgeDefinition(badgeId: string): BadgeDefinition | undefined {
  return seedBadgeDefinitions.find((badge) => badge.id === badgeId);
}