import { router, protectedProcedure } from '../_core/trpc.ts';
import { z } from 'zod';
import { observable } from '@trpc/server/observable';

/**
 * Live Leaderboard WebSocket Router
 * Real-time leaderboard updates with rank changes and animations
 */
export const liveLeaderboardWebSocketRouter = router({
  /**
   * Subscribe to real-time leaderboard updates
   */
  subscribeLeaderboard: protectedProcedure
    .input(
      z.object({
        leaderboardId: z.string(),
        limit: z.number().default(100),
      })
    )
    .subscription(({ input }) => {
      return observable<any>((emit) => {
        // Simulate real-time leaderboard updates
        const interval = setInterval(() => {
          const leaderboard = [
            { rank: 1, playerName: 'ProPlayer123', score: 125000, change: 0, trend: 'stable' },
            { rank: 2, playerName: 'CasinoKing', score: 118500, change: -1, trend: 'down' },
            { rank: 3, playerName: 'LuckyStrike', score: 115200, change: 1, trend: 'up' },
            { rank: 4, playerName: 'WinnerWinner', score: 112800, change: 0, trend: 'stable' },
            { rank: 5, playerName: 'JackpotJoe', score: 108900, change: 2, trend: 'up' },
          ];

          emit.next({
            leaderboard: leaderboard.slice(0, input.limit),
            timestamp: new Date(),
            updateType: 'full_update',
          });
        }, 5000);

        return () => {
          clearInterval(interval);
        };
      });
    }),

  /**
   * Subscribe to player's rank changes
   */
  subscribePlayerRankChanges: protectedProcedure
    .input(z.object({ playerId: z.string() }))
    .subscription(({ input }) => {
      return observable<any>((emit) => {
        const interval = setInterval(() => {
          emit.next({
            playerId: input.playerId,
            currentRank: Math.floor(Math.random() * 100) + 1,
            previousRank: Math.floor(Math.random() * 100) + 1,
            scoreChange: Math.floor(Math.random() * 1000),
            timestamp: new Date(),
          });
        }, 10000);

        return () => {
          clearInterval(interval);
        };
      });
    }),

  /**
   * Subscribe to tournament leaderboard updates
   */
  subscribeTournamentLeaderboard: protectedProcedure
    .input(
      z.object({
        tournamentId: z.string(),
        limit: z.number().default(50),
      })
    )
    .subscription(({ input }) => {
      return observable<any>((emit) => {
        const interval = setInterval(() => {
          emit.next({
            tournamentId: input.tournamentId,
            leaderboard: [
              { rank: 1, playerName: 'TournamentKing', score: 50000, prizePool: 1000 },
              { rank: 2, playerName: 'CompetitorPro', score: 45000, prizePool: 500 },
              { rank: 3, playerName: 'FinalThree', score: 40000, prizePool: 250 },
            ],
            timeRemaining: 3600,
            timestamp: new Date(),
          });
        }, 5000);

        return () => {
          clearInterval(interval);
        };
      });
    }),

  /**
   * Subscribe to seasonal leaderboard updates
   */
  subscribeSeasonalLeaderboard: protectedProcedure
    .input(
      z.object({
        seasonId: z.string(),
        limit: z.number().default(100),
      })
    )
    .subscription(({ input }) => {
      return observable<any>((emit) => {
        const interval = setInterval(() => {
          emit.next({
            seasonId: input.seasonId,
            leaderboard: [
              { rank: 1, playerName: 'SeasonChampion', totalScore: 500000, gamesPlayed: 1200 },
              { rank: 2, playerName: 'RunnerUp', totalScore: 480000, gamesPlayed: 1150 },
              { rank: 3, playerName: 'ThirdPlace', totalScore: 450000, gamesPlayed: 1100 },
            ],
            daysRemaining: 15,
            timestamp: new Date(),
          });
        }, 10000);

        return () => {
          clearInterval(interval);
        };
      });
    }),

  /**
   * Subscribe to game-specific leaderboard
   */
  subscribeGameLeaderboard: protectedProcedure
    .input(
      z.object({
        gameId: z.string(),
        limit: z.number().default(50),
      })
    )
    .subscription(({ input }) => {
      return observable<any>((emit) => {
        const interval = setInterval(() => {
          emit.next({
            gameId: input.gameId,
            leaderboard: [
              { rank: 1, playerName: 'GameMaster', highScore: 250000, totalWins: 850 },
              { rank: 2, playerName: 'SkillfulPlayer', highScore: 240000, totalWins: 820 },
              { rank: 3, playerName: 'ConsistentWinner', highScore: 230000, totalWins: 800 },
            ],
            timestamp: new Date(),
          });
        }, 5000);

        return () => {
          clearInterval(interval);
        };
      });
    }),

  /**
   * Subscribe to friend leaderboard
   */
  subscribeFriendLeaderboard: protectedProcedure
    .input(z.object({ limit: z.number().default(20) }))
    .subscription(({ ctx, input }) => {
      return observable<any>((emit) => {
        const interval = setInterval(() => {
          emit.next({
            leaderboard: [
              { rank: 1, playerName: 'YourName', score: 100000, isSelf: true },
              { rank: 2, playerName: 'Friend1', score: 95000, isSelf: false },
              { rank: 3, playerName: 'Friend2', score: 85000, isSelf: false },
            ],
            timestamp: new Date(),
          });
        }, 5000);

        return () => {
          clearInterval(interval);
        };
      });
    }),

  /**
   * Get leaderboard history
   */
  getLeaderboardHistory: protectedProcedure
    .input(
      z.object({
        leaderboardId: z.string(),
        days: z.number().default(7),
      })
    )
    .query(async ({ input }) => {
      return {
        leaderboardId: input.leaderboardId,
        history: [
          { date: '2024-04-15', topPlayer: 'ProPlayer123', topScore: 120000 },
          { date: '2024-04-16', topPlayer: 'ProPlayer123', topScore: 122000 },
          { date: '2024-04-17', topPlayer: 'CasinoKing', topScore: 125000 },
          { date: '2024-04-18', topPlayer: 'ProPlayer123', topScore: 128000 },
          { date: '2024-04-19', topPlayer: 'ProPlayer123', topScore: 130000 },
          { date: '2024-04-20', topPlayer: 'ProPlayer123', topScore: 132000 },
          { date: '2024-04-21', topPlayer: 'ProPlayer123', topScore: 125000 },
        ],
      };
    }),

  /**
   * Get player's leaderboard position history
   */
  getPlayerPositionHistory: protectedProcedure
    .input(
      z.object({
        playerId: z.string(),
        leaderboardId: z.string(),
        days: z.number().default(30),
      })
    )
    .query(async ({ input }) => {
      return {
        playerId: input.playerId,
        history: [
          { date: '2024-03-22', rank: 50, score: 50000 },
          { date: '2024-03-29', rank: 45, score: 60000 },
          { date: '2024-04-05', rank: 35, score: 80000 },
          { date: '2024-04-12', rank: 25, score: 100000 },
          { date: '2024-04-19', rank: 15, score: 120000 },
          { date: '2024-04-21', rank: 3, score: 125000 },
        ],
      };
    }),

  /**
   * Get leaderboard comparison
   */
  getLeaderboardComparison: protectedProcedure
    .input(
      z.object({
        playerId: z.string(),
        leaderboardId: z.string(),
      })
    )
    .query(async ({ input }) => {
      return {
        player: {
          playerId: input.playerId,
          playerName: 'CurrentPlayer',
          rank: 3,
          score: 125000,
        },
        neighbors: [
          { rank: 2, playerName: 'CasinoKing', score: 118500, scoreDiff: -6500 },
          { rank: 4, playerName: 'WinnerWinner', score: 112800, scoreDiff: -12200 },
        ],
        stats: {
          percentile: 97,
          scoreAboveAverage: 100000,
          playersBelow: 97,
          playersAbove: 3,
        },
      };
    }),

  /**
   * Get leaderboard statistics
   */
  getLeaderboardStatistics: protectedProcedure
    .input(z.object({ leaderboardId: z.string() }))
    .query(async ({ input }) => {
      return {
        leaderboardId: input.leaderboardId,
        totalPlayers: 100,
        topScore: 132000,
        averageScore: 25000,
        medianScore: 15000,
        scoreDistribution: {
          top10: 100000,
          top25: 80000,
          top50: 50000,
          top100: 25000,
        },
      };
    }),
});