import { useState } from "react";
import { Check, Download, Info } from "lucide-react";
import { LuFileSpreadsheet } from "react-icons/lu"; // Alternatif icon task dari react-icons

const initialNotifications = [
  {
    id: 1,
    type: "new-task",
    title: "New Task Assigned",
    time: "Just now",
    isNew: true,
    group: "TODAY",
    description: "Mentor Sarah Johnson has pushed a new task: User Persona Analysis"
  },
  {
    id: 2,
    type: "achievement",
    title: "Certificate Ready",
    time: "2 hours ago",
    isNew: false,
    group: "TODAY",
    description: "Your certificate for UI Engineering Phase 1 is now available for download!"
  },
  {
    id: 3,
    type: "system",
    title: "System Maintenance",
    time: "2 days ago",
    isNew: false,
    group: "YESTERDAY",
    description: "Internify will undergo scheduled maintenance this Sunday from 02:00 AM to 04:00 AM GMT+7."
  }
];

export default function NotificationList() {
  const [notifications, setNotifications] = useState(initialNotifications);

  const handleMarkAllRead = () => {
    setNotifications(prev => prev.map(n => ({ ...n, isNew: false })));
    alert("All notifications marked as read!");
  };

  return (
    <div className="container">
      {/* Header */}
      <div className="flex flex-col sm:flex-row sm:items-center sm:justify-between gap-4 mb-8">
        <div>
          <h1 className="page-title">Notifications</h1>
          <p className="page-title-desc">
            Keep track of your interns' progress and system updates.
          </p>
        </div>
        <button 
          onClick={handleMarkAllRead}
          className="flex items-center gap-1.5 self-start sm:self-center px-4 py-2 border border-gray-200 rounded-lg text-xs font-semibold text-gray-700 bg-white hover:bg-gray-50 transition-colors shadow-sm"
        >
          <Check className="w-4 h-4 text-green-600 stroke-[3]" />
          Mark all as read
        </button>
      </div>

      {/* List Group Section */}
      <div className="space-y-6">
        
        {/* Render Group TODAY */}
        <div className="space-y-3">
          {notifications.filter(n => n.group === "TODAY").map((item) => (
            <div 
              key={item.id} 
              className={`relative flex items-start gap-4 p-5 bg-white border border-gray-100 rounded-xl shadow-[0_2px_10px_rgba(0,0,0,0.01)] ${
                item.type === 'new-task' ? 'border-l-4 border-l-[#B30000]' : ''
              }`}
            >
              {/* Icon Container */}
              <div className={`p-2.5 rounded-xl ${
                item.type === 'new-task' ? 'bg-red-50 text-red-600' : 'bg-gray-100 text-gray-600'
              }`}>
                {item.type === 'new-task' && <LuFileSpreadsheet className="w-5 h-5" />}
                {item.type === 'achievement' && <Check className="w-5 h-5 stroke-[2.5]" />}
              </div>

              {/* Content text */}
              <div className="flex-grow space-y-1">
                <div className="flex flex-wrap items-center gap-2">
                  {item.isNew && (
                    <span className="bg-[#B30000] text-white font-extrabold text-[9px] px-2 py-0.5 rounded uppercase tracking-wider">
                      NEW
                    </span>
                  )}
                  <h3 className="text-sm font-bold text-gray-900">{item.title}</h3>
                </div>
                
                {/* Custom description coloring logic */}
                <p className="text-xs text-gray-500 font-medium leading-relaxed max-w-2xl">
                  {item.type === 'new-task' ? (
                    <>Mentor <span className="font-semibold text-gray-900">Sarah Johnson</span> has pushed a new task: <span className="italic font-semibold text-gray-800">User Persona Analysis</span></>
                  ) : item.type === 'achievement' ? (
                    <>Your certificate for <span className="font-semibold text-gray-900">UI Engineering Phase 1</span> is now available for download!</>
                  ) : item.description}
                </p>

                {/* Conditional Actions */}
                {item.type === 'new-task' && (
                  <div className="flex items-center gap-2 pt-3">
                    <button className="px-4 py-1.5 bg-[#B30000] hover:bg-[#990000] text-white text-xs font-bold rounded-lg shadow-sm transition-colors">
                      View Task
                    </button>
                    <button className="px-4 py-1.5 border border-gray-200 text-gray-500 hover:text-gray-700 hover:bg-gray-50 text-xs font-semibold rounded-lg transition-colors">
                      Later
                    </button>
                  </div>
                )}

                {item.type === 'achievement' && (
                  <button className="flex items-center gap-1 text-xs font-bold text-[#B30000] hover:underline pt-2">
                    <Download className="w-3.5 h-3.5" />
                    Download Certificate
                  </button>
                )}
              </div>

              {/* Time */}
              <span className="text-[11px] text-gray-400 font-medium whitespace-nowrap self-start md:absolute md:top-5 md:right-5">
                {item.time}
              </span>
            </div>
          ))}
        </div>

        {/* Header Section YESTERDAY */}
        <div className="space-y-3 pt-2">
          <h2 className="text-[10px] font-bold tracking-widest text-gray-400 uppercase">
            YESTERDAY
          </h2>
          
          {notifications.filter(n => n.group === "YESTERDAY").map((item) => (
            <div 
              key={item.id} 
              className="relative flex items-start gap-4 p-5 bg-gray-50 border border-gray-100 rounded-xl"
            >
              <div className="p-2.5 bg-gray-200 text-gray-500 rounded-xl">
                <Info className="w-5 h-5" />
              </div>
              <div className="flex-grow space-y-1">
                <h3 className="text-sm font-bold text-gray-700">{item.title}</h3>
                <p className="text-xs text-gray-500 font-medium leading-relaxed max-w-2xl">
                  {item.description}
                </p>
              </div>
              <span className="text-[11px] text-gray-400 font-medium whitespace-nowrap md:absolute md:top-5 md:right-5">
                {item.time}
              </span>
            </div>
          ))}
        </div>

      </div>
    </div>
  );
}