"use client";

import { useState } from "react";
import { motion, AnimatePresence } from "framer-motion";
import { CheckCircle2, XCircle, Loader2 } from "lucide-react";

interface PendingContract {
  id: string;
  roomName: string;
  date: string;
  activities: string[];
}

interface ContractCompletionModalProps {
  contracts: PendingContract[];
  userId: string;
  onDone: () => void;
}

export default function ContractCompletionModal({
  contracts,
  userId,
  onDone,
}: ContractCompletionModalProps) {
  const [current, setCurrent] = useState(0);
  const [loading, setLoading] = useState(false);

  if (contracts.length === 0) return null;

  const contract = contracts[current];

  const handleAction = async (action: "complete" | "expire") => {
    if (loading) return;
    setLoading(true);
    try {
      await fetch("/api/blindbox/plan", {
        method: "PATCH",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({ planId: contract.id, userId, action }),
      });
    } catch (e) { console.error("ContractCompletionModal: submit failed:", e); }
    setLoading(false);

    if (current < contracts.length - 1) {
      setCurrent((c) => c + 1);
    } else {
      onDone();
    }
  };

  const summary =
    contract.activities.length <= 3
      ? contract.activities.join(" → ")
      : contract.activities.slice(0, 3).join(" → ") + "…";

  return (
    <AnimatePresence>
      <motion.div
        className="fixed inset-0 z-50 flex items-center justify-center bg-black/60 px-6 backdrop-blur-sm"
        initial={{ opacity: 0 }}
        animate={{ opacity: 1 }}
        exit={{ opacity: 0 }}
      >
        <motion.div
          className="w-full max-w-sm overflow-hidden rounded-2xl bg-surface shadow-2xl ring-1 ring-border"
          initial={{ scale: 0.9, opacity: 0 }}
          animate={{ scale: 1, opacity: 1 }}
          transition={{ type: "spring", damping: 20, stiffness: 300 }}
        >
          <div className="bg-linear-to-br from-purple-600/15 to-indigo-600/15 px-5 py-4">
            <p className="text-center text-xs font-bold tracking-wider text-purple-400/70">
              ✦ 契约到期 ✦
            </p>
            <p className="mt-2 text-center text-base font-bold text-heading">
              {contract.roomName}
            </p>
            <p className="mt-1 text-center text-[11px] text-muted">
              {contract.date} · {summary}
            </p>
          </div>

          <div className="px-5 py-4">
            <p className="text-center text-sm text-secondary">
              这份契约已到期，你完成了吗？
            </p>

            <div className="mt-4 flex gap-3">
              <button
                onClick={() => handleAction("complete")}
                disabled={loading}
                className="flex flex-1 items-center justify-center gap-1.5 rounded-xl bg-emerald-600 py-3 text-sm font-bold text-white transition-colors hover:bg-emerald-500 disabled:opacity-50"
              >
                {loading ? (
                  <Loader2 size={16} className="animate-spin" />
                ) : (
                  <CheckCircle2 size={16} />
                )}
                完成了！
              </button>
              <button
                onClick={() => handleAction("expire")}
                disabled={loading}
                className="flex flex-1 items-center justify-center gap-1.5 rounded-xl bg-surface py-3 text-sm font-medium text-muted ring-1 ring-border transition-colors hover:bg-elevated disabled:opacity-50"
              >
                {loading ? (
                  <Loader2 size={16} className="animate-spin" />
                ) : (
                  <XCircle size={16} />
                )}
                没完成
              </button>
            </div>

            {contracts.length > 1 && (
              <p className="mt-3 text-center text-[10px] text-dim">
                {current + 1} / {contracts.length}
              </p>
            )}
          </div>
        </motion.div>
      </motion.div>
    </AnimatePresence>
  );
}

export type { PendingContract };
