"use client";

import { useState } from "react";
import { useUser } from "@/lib/context";
import { Users, Footprints, Check, Zap, Landmark } from "lucide-react";
import { motion } from "framer-motion";

interface TeamChallenge {
  id: string;
  title: string;
  description: string;
  reward: number;
  current: number;
  goal: number;
  joined: boolean;
  icon: React.ReactNode;
}

export default function SquadChallenges() {
  const { addLyts } = useUser();
  const [challenges, setChallenges] = useState<TeamChallenge[]>([
    {
      id: "ch-steps",
      title: "Weekend Step Sprint",
      description: "Collectively log 50,000 steps with your team this weekend.",
      reward: 100,
      current: 41200,
      goal: 50000,
      joined: false,
      icon: <Footprints className="w-5 h-5 text-accent-lime" />,
    },
    {
      id: "ch-stores",
      title: "Starbucks Double Drop",
      description: "Check in at any two Starbucks locations within 7 days.",
      reward: 40,
      current: 1,
      goal: 2,
      joined: true,
      icon: <Landmark className="w-5 h-5 text-emerald-400" />,
    },
  ]);

  const handleJoinChallenge = (id: string, reward: number) => {
    setChallenges((prev) =>
      prev.map((ch) => {
        if (ch.id === id) {
          if (ch.joined) {
            addLyts(reward);
            return { ...ch, current: ch.goal };
          }
          return { ...ch, joined: true };
        }
        return ch;
      })
    );
  };

  return (
    <section className="py-24 bg-[#090909] relative overflow-hidden">
      <div className="max-w-4xl mx-auto px-4 sm:px-6 lg:px-8 relative z-10">
        
        <div className="glassmorphism rounded-3xl p-8 sm:p-12 border border-primary/10 space-y-8">
          <div className="text-left space-y-4">
            <div className="w-12 h-12 rounded-2xl bg-primary/10 border border-primary/20 flex items-center justify-center text-primary">
              <Users className="w-6 h-6" />
            </div>

            <div className="space-y-2">
              <span className="text-primary font-bold text-xs uppercase tracking-wider">Section 13 • Squad Goals</span>
              <h3 className="text-2xl sm:text-4xl font-extrabold font-sora text-white">
                Cooperative Team <br />
                <span className="text-glow-yellow text-primary">Active Challenges</span>
              </h3>
              <p className="text-white/60 text-sm leading-relaxed">
                Connect with friends or match with nearby community squads. Log steps, complete visits, and unlock bulk LYT currency bonuses together.
              </p>
            </div>
          </div>

          {/* Challenges listing */}
          <div className="space-y-4 pt-4">
            {challenges.map((ch) => {
              const percentage = Math.min(100, Math.round((ch.current / ch.goal) * 100));
              const isCompleted = ch.current >= ch.goal;

              return (
                <div
                  key={ch.id}
                  className={`glassmorphism rounded-2xl p-6 border transition-colors ${
                    ch.joined ? "border-primary/20 bg-primary/2" : "border-white/5"
                  }`}
                >
                  <div className="flex justify-between items-start gap-4 mb-4">
                    <div className="flex items-center space-x-3">
                      <div className="w-10 h-10 rounded-xl bg-white/5 border border-white/10 flex items-center justify-center">
                        {ch.icon}
                      </div>
                      <div>
                        <h4 className="text-sm font-bold text-white font-sora">{ch.title}</h4>
                        <p className="text-white/60 text-xs mt-0.5 leading-relaxed">{ch.description}</p>
                      </div>
                    </div>
                    
                    <div className="text-right">
                      <span className="text-[9px] text-white/40 font-bold uppercase tracking-wider block">Reward</span>
                      <span className="text-xs font-extrabold text-primary">+{ch.reward} LYTs</span>
                    </div>
                  </div>

                  <div className="space-y-2">
                    <div className="flex justify-between text-xs font-semibold">
                      <span className="text-white/50">{ch.current.toLocaleString()} / {ch.goal.toLocaleString()}</span>
                      <span className="text-primary">{percentage}%</span>
                    </div>
                    <div className="w-full h-1.5 bg-white/5 rounded-full overflow-hidden">
                      <div
                        style={{ width: `${percentage}%` }}
                        className="h-full bg-gradient-to-r from-primary to-accent-lime rounded-full"
                      />
                    </div>
                  </div>

                  <div className="mt-4 flex justify-end">
                    <button
                      onClick={() => handleJoinChallenge(ch.id, ch.reward)}
                      disabled={isCompleted}
                      className={`px-4 py-2 rounded-xl text-xs font-bold transition-all flex items-center gap-1.5 cursor-pointer ${
                        isCompleted
                          ? "bg-accent-lime/10 border border-accent-lime/20 text-accent-lime cursor-not-allowed"
                          : ch.joined
                          ? "bg-primary text-dark hover:bg-primary/90"
                          : "bg-white/5 border border-white/10 text-white hover:bg-white/10"
                      }`}
                    >
                      {isCompleted ? (
                        <>
                          <Check className="w-3.5 h-3.5" />
                          <span>Claimed</span>
                        </>
                      ) : ch.joined ? (
                        <span>Complete & Claim</span>
                      ) : (
                        <span>Join Squad Goal</span>
                      )}
                    </button>
                  </div>
                </div>
              );
            })}
          </div>
        </div>

      </div>
    </section>
  );
}