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

export const adminUsersRouter = router({
  // Get users with filtering
  getUsers: protectedProcedure
    .input(
      z.object({
        limit: z.number().default(50),
        offset: z.number().default(0),
        search: z.string().optional(),
        status: z.enum(["active", "suspended", "banned", "verified"]).optional(),
        kycStatus: z.enum(["pending", "verified", "rejected"]).optional(),
      })
    )
    .query(async ({ ctx, input }) => {
      if (ctx.user.role !== "admin") {
        throw new TRPCError({ code: "FORBIDDEN" });
      }

      // In production, query database with filters
      return {
        users: [],
        total: 0,
      };
    }),

  // Get user profile with statistics
  getUserProfile: protectedProcedure
    .input(z.object({ userId: z.string() }))
    .query(async ({ ctx, input }) => {
      if (ctx.user.role !== "admin") {
        throw new TRPCError({ code: "FORBIDDEN" });
      }

      // In production, query database
      return {
        userId: input.userId,
        username: "",
        email: "",
        phone: "",
        joinedAt: new Date(),
        totalSpent: 0,
        totalWon: 0,
        accountStatus: "active" as const,
        kycStatus: "pending" as const,
        lastActive: new Date(),
        supportTickets: 0,
        referralCount: 0,
        favoriteGames: [],
        sessionHistory: [],
      };
    }),

  // Get user statistics
  getUserStats: protectedProcedure
    .input(z.object({ userId: z.string() }))
    .query(async ({ ctx, input }) => {
      if (ctx.user.role !== "admin") {
        throw new TRPCError({ code: "FORBIDDEN" });
      }

      // In production, query database
      return {
        userId: input.userId,
        totalSessions: 0,
        totalBets: 0,
        totalWins: 0,
        totalLosses: 0,
        winRate: 0,
        averageSessionDuration: 0,
        averageBetSize: 0,
        favoriteGame: "",
        lastGamePlayed: new Date(),
        churnRisk: "low" as const,
      };
    }),

  // Suspend user account
  suspendUser: protectedProcedure
    .input(
      z.object({
        userId: z.string(),
        reason: z.string(),
        duration: z.number().optional(), // in days
      })
    )
    .mutation(async ({ ctx, input }) => {
      if (ctx.user.role !== "admin") {
        throw new TRPCError({ code: "FORBIDDEN" });
      }

      // In production, update database
      return {
        success: true,
        message: `User ${input.userId} suspended`,
      };
    }),

  // Ban user account
  banUser: protectedProcedure
    .input(
      z.object({
        userId: z.string(),
        reason: z.string(),
      })
    )
    .mutation(async ({ ctx, input }) => {
      if (ctx.user.role !== "admin") {
        throw new TRPCError({ code: "FORBIDDEN" });
      }

      // In production, update database
      return {
        success: true,
        message: `User ${input.userId} banned`,
      };
    }),

  // Unban user
  unbanUser: protectedProcedure
    .input(z.object({ userId: z.string() }))
    .mutation(async ({ ctx, input }) => {
      if (ctx.user.role !== "admin") {
        throw new TRPCError({ code: "FORBIDDEN" });
      }

      // In production, update database
      return {
        success: true,
        message: `User ${input.userId} unbanned`,
      };
    }),

  // Reset user password
  resetUserPassword: protectedProcedure
    .input(z.object({ userId: z.string() }))
    .mutation(async ({ ctx, input }) => {
      if (ctx.user.role !== "admin") {
        throw new TRPCError({ code: "FORBIDDEN" });
      }

      // In production, generate reset token and send email
      return {
        success: true,
        resetToken: `token-${Date.now()}`,
        message: "Password reset email sent to user",
      };
    }),

  // Add bonus to user wallet
  addBonus: protectedProcedure
    .input(
      z.object({
        userId: z.string(),
        amount: z.number().positive(),
        type: z.enum(["GC", "SC"]),
        reason: z.string(),
      })
    )
    .mutation(async ({ ctx, input }) => {
      if (ctx.user.role !== "admin") {
        throw new TRPCError({ code: "FORBIDDEN" });
      }

      // In production, update wallet and create transaction
      return {
        success: true,
        transactionId: `txn-${Date.now()}`,
        message: `${input.amount} ${input.type} added to user wallet`,
      };
    }),

  // Deduct from user wallet
  deductFromWallet: protectedProcedure
    .input(
      z.object({
        userId: z.string(),
        amount: z.number().positive(),
        type: z.enum(["GC", "SC"]),
        reason: z.string(),
      })
    )
    .mutation(async ({ ctx, input }) => {
      if (ctx.user.role !== "admin") {
        throw new TRPCError({ code: "FORBIDDEN" });
      }

      // In production, update wallet and create transaction
      return {
        success: true,
        transactionId: `txn-${Date.now()}`,
        message: `${input.amount} ${input.type} deducted from user wallet`,
      };
    }),

  // Get user transactions
  getUserTransactions: protectedProcedure
    .input(
      z.object({
        userId: z.string(),
        limit: z.number().default(50),
        offset: z.number().default(0),
      })
    )
    .query(async ({ ctx, input }) => {
      if (ctx.user.role !== "admin") {
        throw new TRPCError({ code: "FORBIDDEN" });
      }

      // In production, query database
      return {
        transactions: [],
        total: 0,
      };
    }),

  // Bulk user actions
  bulkAction: protectedProcedure
    .input(
      z.object({
        userIds: z.array(z.string()),
        action: z.enum(["suspend", "ban", "addBonus", "sendMessage"]),
        params: z.record(z.any()).optional(),
      })
    )
    .mutation(async ({ ctx, input }) => {
      if (ctx.user.role !== "admin") {
        throw new TRPCError({ code: "FORBIDDEN" });
      }

      // In production, perform bulk action
      return {
        success: true,
        affected: input.userIds.length,
        message: `Bulk action ${input.action} applied to ${input.userIds.length} users`,
      };
    }),

  // Get user segments
  getUserSegments: protectedProcedure.query(async ({ ctx }) => {
    if (ctx.user.role !== "admin") {
      throw new TRPCError({ code: "FORBIDDEN" });
    }

    // In production, query database
    return {
      newPlayers: 0,
      activePlayers: 0,
      returningPlayers: 0,
      inactivePlayers: 0,
      vipPlayers: 0,
      atRiskPlayers: 0,
      churnedPlayers: 0,
    };
  }),
});