"use client";
import { useState } from "react";
import { Button } from "@/components/ui/button";
import { Card } from "@/components/ui/card";
import { MessageCircle, X, Send } from "lucide-react";
import { motion, AnimatePresence } from "framer-motion";

export function Chatbot() {
  const [isOpen, setIsOpen] = useState(false);
  const [messages, setMessages] = useState([
    { role: "bot", text: "Hi! I'm the Apex Assistant. I'm powered by AI to help you while I'm out detailing cars. How can I help you today?" }
  ]);
  const [input, setInput] = useState("");

  const handleSend = () => {
    if (!input.trim()) return;
    const newMessages = [...messages, { role: "user", text: input }];
    setMessages(newMessages);
    setInput("");
    
    // Simple automated responses
    setTimeout(() => {
      let response = "I'm not sure about that, but you can book a detail and I'll answer all your questions in person!";
      const lowerInput = input.toLowerCase();
      if (lowerInput.includes("price") || lowerInput.includes("cost")) response = "Our prices vary by car size: Full Interior starts at $80, Exterior Hand Wash at $40, and Full Detail at $110!";
      if (lowerInput.includes("where") || lowerInput.includes("location")) response = "I'm based in Cedar Rapids and I'm mobile—I come right to your driveway!";
      if (lowerInput.includes("equipment") || lowerInput.includes("tools")) response = "I use professional-grade pressure washers, steam cleaners, and industrial vacuums to get that better-than-pro finish.";
      if (lowerInput.includes("who") || lowerInput.includes("old")) response = "I'm a 13-year-old entrepreneur saving up for my first car and college!";
      if (lowerInput.includes("book") || lowerInput.includes("schedule")) response = "You can book directly on our site using the 'Book a Detail' button. We accept Stripe for secure payments!";
      
      setMessages([...newMessages, { role: "bot", text: response }]);
    }, 1000);
  };

  return (
    <div className="fixed bottom-6 right-6 z-50">
      <AnimatePresence>
        {!isOpen ? (
          <motion.div
            initial={{ scale: 0, opacity: 0 }}
            animate={{ scale: 1, opacity: 1 }}
            exit={{ scale: 0, opacity: 0 }}
          >
            <Button onClick={() => setIsOpen(true)} className="rounded-full w-14 h-14 shadow-xl bg-blue-600 hover:bg-blue-700">
              <MessageCircle className="w-6 h-6 text-white" />
            </Button>
          </motion.div>
        ) : (
          <motion.div
            initial={{ y: 100, opacity: 0 }}
            animate={{ y: 0, opacity: 1 }}
            exit={{ y: 100, opacity: 0 }}
          >
            <Card className="w-80 h-96 flex flex-col shadow-2xl border-neutral-200 dark:border-neutral-800 overflow-hidden">
              <div className="p-4 bg-blue-600 text-white flex justify-between items-center">
                <div className="flex items-center gap-2">
                  <div className="w-2 h-2 bg-green-400 rounded-full animate-pulse" />
                  <span className="font-bold">Apex AI Assistant</span>
                </div>
                <X className="w-4 h-4 cursor-pointer" onClick={() => setIsOpen(false)} />
              </div>
              <div className="flex-1 overflow-y-auto p-4 space-y-4 bg-white dark:bg-neutral-950">
                {messages.map((m, i) => (
                  <motion.div 
                    key={i} 
                    initial={{ opacity: 0, x: m.role === "user" ? 20 : -20 }}
                    animate={{ opacity: 1, x: 0 }}
                    className={`flex ${m.role === "user" ? "justify-end" : "justify-start"}`}
                  >
                    <div className={`max-w-[80%] p-3 rounded-2xl text-sm ${m.role === "user" ? "bg-blue-600 text-white rounded-tr-none" : "bg-neutral-100 dark:bg-neutral-800 rounded-tl-none"}`}>
                      {m.text}
                    </div>
                  </motion.div>
                ))}
              </div>
              <div className="p-4 border-t bg-neutral-50 dark:bg-neutral-900 flex gap-2">
                <input 
                  className="flex-1 bg-transparent text-sm outline-none" 
                  placeholder="Ask about pricing, equipment..." 
                  value={input}
                  onChange={(e) => (setInput(e.target.value))}
                  onKeyDown={(e) => e.key === "Enter" && handleSend()}
                />
                <Button size="icon" variant="ghost" className="h-8 w-8 text-blue-600" onClick={handleSend}>
                  <Send className="w-4 h-4" />
                </Button>
              </div>
            </Card>
          </motion.div>
        )}
      </AnimatePresence>
    </div>
  );
}