/**
 * MCP Gamification Tools — leaderboard, badges, levels, sharing.
 *
 * @module mcp-server/tools/gamificationTools
 */

import { z } from "zod";

export const gamificationTools = [
  {
    name: "gamification_leaderboard",
    description: "Get leaderboard rankings for a scope (global, weekly, monthly, tokens_shared).",
    scopes: ["read:gamification"],
    inputSchema: z.object({
      scope: z.enum(["global", "weekly", "monthly", "tokens_shared"]).default("global"),
      limit: z.number().min(1).max(100).default(50),
    }),
    handler: async (args: { scope: string; limit: number }) => {
      const { getTopN } = await import("../../../src/lib/gamification/leaderboard");
      const entries = await getTopN(args.scope as any, args.limit);
      return { entries };
    },
  },
  {
    name: "gamification_rank",
    description: "Get rank for an API key in a leaderboard scope.",
    scopes: ["read:gamification"],
    inputSchema: z.object({
      apiKeyId: z.string(),
      scope: z.enum(["global", "weekly", "monthly", "tokens_shared"]).default("global"),
    }),
    handler: async (args: { apiKeyId: string; scope: string }) => {
      const { getRank } = await import("../../../src/lib/gamification/leaderboard");
      const rank = await getRank(args.apiKeyId, args.scope as any);
      return { rank };
    },
  },
  {
    name: "gamification_profile",
    description: "Get XP, level, and badges for an API key.",
    scopes: ["read:gamification"],
    inputSchema: z.object({
      apiKeyId: z.string(),
    }),
    handler: async (args: { apiKeyId: string }) => {
      const { getXp, getBadges } = await import("../../../src/lib/db/gamification");
      const { calculateLevel, getLevelTitle, getLevelTier } =
        await import("../../../src/lib/gamification/xp");
      const { getStreak } = await import("../../../src/lib/gamification/streaks");

      const xp = getXp(args.apiKeyId);
      const badges = getBadges(args.apiKeyId);
      const streak = await getStreak(args.apiKeyId);
      const level = xp ? calculateLevel(xp.totalXp) : 1;

      return {
        totalXp: xp?.totalXp || 0,
        level,
        title: getLevelTitle(level),
        tier: getLevelTier(level),
        streak: streak.currentStreak,
        longestStreak: streak.longestStreak,
        badges: badges.map((b) => ({ id: b.badgeId, unlockedAt: b.unlockedAt })),
      };
    },
  },
  {
    name: "gamification_badges",
    description: "List all badge definitions or earned badges for an API key.",
    scopes: ["read:gamification"],
    inputSchema: z.object({
      apiKeyId: z.string().optional(),
      category: z.string().optional(),
    }),
    handler: async (args: { apiKeyId?: string; category?: string }) => {
      const { getBadgeDefinitions, getBadges } = await import("../../../src/lib/db/gamification");

      if (args.apiKeyId) {
        const badges = getBadges(args.apiKeyId);
        return { earned: badges };
      }

      const definitions = getBadgeDefinitions(args.category);
      return { definitions };
    },
  },
  {
    name: "gamification_transfer",
    description: "Transfer tokens between API keys.",
    scopes: ["write:gamification"],
    inputSchema: z.object({
      fromApiKeyId: z.string(),
      toApiKeyId: z.string(),
      amount: z.number().positive(),
      reason: z.string().optional(),
    }),
    handler: async (args: {
      fromApiKeyId: string;
      toApiKeyId: string;
      amount: number;
      reason?: string;
    }) => {
      const { transferTokens } = await import("../../../src/lib/gamification/sharing");
      const result = await transferTokens(
        args.fromApiKeyId,
        args.toApiKeyId,
        args.amount,
        args.reason
      );
      return result;
    },
  },
  {
    name: "gamification_invite",
    description: "Create an invite token for server connection.",
    scopes: ["write:gamification"],
    inputSchema: z.object({
      apiKeyId: z.string(),
      serverUrl: z.string().optional(),
      maxUses: z.number().positive().default(1),
    }),
    handler: async (args: { apiKeyId: string; serverUrl?: string; maxUses: number }) => {
      const { createInvite } = await import("../../../src/lib/gamification/invites");
      const result = await createInvite(args.apiKeyId, args.serverUrl, args.maxUses);
      return result;
    },
  },
  {
    name: "gamification_servers",
    description: "List connected community servers.",
    scopes: ["read:gamification"],
    inputSchema: z.object({}),
    handler: async () => {
      const { listServers } = await import("../../../src/lib/gamification/servers");
      return { servers: await listServers() };
    },
  },
  {
    name: "gamification_anomalies",
    description: "Get flagged anomalous XP activity (admin only).",
    scopes: ["read:gamification"],
    inputSchema: z.object({}),
    handler: async () => {
      const { getAnomalies } = await import("../../../src/lib/gamification/antiCheat");
      return { anomalies: await getAnomalies() };
    },
  },
];