'use client';

import React from 'react';
import Link from 'next/link';
import { motion } from 'framer-motion';
import {
  Building2,
  Briefcase,
  MapPin,
  DollarSign,
  ExternalLink,
  TrendingUp,
  Users,
  Star,
  Clock,
  CheckCircle,
  ArrowRight,
  Search,
  Filter,
  Bookmark,
  Share2,
  Eye,
  AlertCircle,
} from 'lucide-react';
import { Card, CardContent } from '@workspace/ui/components/card';
import { Button } from '@workspace/ui/components/button';
import { Badge } from '@workspace/ui/components/badge';

interface DashboardClientProps {
  companies: any[]; // TODO: replace with proper types from @workspace/db
  totalStudents: number;
  success: boolean;
  error?: string;
}

export default function DashboardClient({
  companies: data,
  totalStudents,
  success,
  error,
}: DashboardClientProps) {
  // Calculate stats
  const totalActiveJobs = data.reduce(
    (acc, company) => acc + company.jobs.filter((job: any) => job.active).length,
    0,
  );
  const featuredCompanies = data.slice(0, 3);
  const recentJobs = data
    .flatMap((company) => company.jobs.slice(0, 2).map((job: any) => ({ ...job, company })))
    .slice(0, 6);

  return (
    <div className="min-h-screen">
      {/* Hero Section */}
      <section className="relative bg-gradient-to-br from-blue-600 via-indigo-600 to-purple-700 text-white py-20">
        <div className="absolute inset-0 bg-black/10" />
        <div className="relative max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
          <motion.div
            className="text-center"
            initial={{ opacity: 0, y: 30 }}
            animate={{ opacity: 1, y: 0 }}
            transition={{ duration: 0.8 }}
          >
            <motion.h1
              className="text-5xl md:text-6xl font-bold mb-6"
              initial={{ opacity: 0, y: 20 }}
              animate={{ opacity: 1, y: 0 }}
              transition={{ duration: 0.8, delay: 0.2 }}
            >
              Discover Your Dream Career
            </motion.h1>
            <motion.p
              className="text-xl md:text-2xl text-blue-100 mb-8 max-w-3xl mx-auto"
              initial={{ opacity: 0, y: 20 }}
              animate={{ opacity: 1, y: 0 }}
              transition={{ duration: 0.8, delay: 0.4 }}
            >
              Explore opportunities from top companies and find the perfect role that matches your skills and
              aspirations
            </motion.p>
            <motion.div
              className="flex flex-col sm:flex-row gap-4 justify-center"
              initial={{ opacity: 0, y: 20 }}
              animate={{ opacity: 1, y: 0 }}
              transition={{ duration: 0.8, delay: 0.6 }}
            >
              <motion.div whileHover={{ scale: 1.05 }} whileTap={{ scale: 0.95 }}>
                <Link href="/jobs">
                  <Button size="lg" className="bg-white text-blue-600 hover:bg-blue-50 px-8 py-3 text-lg font-semibold">
                    <Search className="w-5 h-5 mr-2" />
                    Browse All Jobs
                  </Button>
                </Link>
              </motion.div>
              <motion.div whileHover={{ scale: 1.05 }} whileTap={{ scale: 0.95 }}>
                <Link href="/applications">
                  <Button
                    size="lg"
                    variant="outline"
                    className="border-white text-white hover:bg-white/10 px-8 py-3 text-lg font-semibold"
                  >
                    <Bookmark className="w-5 h-5 mr-2" />
                    My Applications
                  </Button>
                </Link>
              </motion.div>
            </motion.div>
          </motion.div>
        </div>
      </section>

      {/* Stats Section */}
      <section className="py-16 bg-white">
        <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
          {!success && error && (
            <motion.div
              className="mb-8 p-4 bg-yellow-100 text-yellow-700 rounded-lg"
              initial={{ opacity: 0, x: -20 }}
              animate={{ opacity: 1, x: 0 }}
              transition={{ duration: 0.5 }}
            >
              <AlertCircle className="w-4 h-4 inline mr-2" />
              Using demo data: {error}
            </motion.div>
          )}
          <motion.div
            className="grid grid-cols-1 md:grid-cols-4 gap-8"
            initial={{ opacity: 0, y: 30 }}
            animate={{ opacity: 1, y: 0 }}
            transition={{ duration: 0.8, delay: 0.2 }}
          >
            {[
              { icon: Building2, color: 'blue', value: data.length, label: 'Active Companies' },
              { icon: Briefcase, color: 'green', value: totalActiveJobs, label: 'Open Positions' },
              { icon: Users, color: 'purple', value: totalStudents, label: 'Students' },
              { icon: TrendingUp, color: 'orange', value: '95%', label: 'Success Rate' },
            ].map((stat, index) => {
              const IconComponent = stat.icon;
              return (
                <motion.div
                  key={stat.label}
                  className="text-center"
                  initial={{ opacity: 0, y: 20 }}
                  animate={{ opacity: 1, y: 0 }}
                  transition={{ duration: 0.5, delay: 0.4 + index * 0.1 }}
                  whileHover={{ y: -5, scale: 1.02 }}
                >
                  <motion.div
                    className={`w-16 h-16 bg-${stat.color}-100 rounded-full flex items-center justify-center mx-auto mb-4`}
                    whileHover={{ rotate: 360 }}
                    transition={{ duration: 0.6 }}
                  >
                    <IconComponent className={`w-8 h-8 text-${stat.color}-600`} />
                  </motion.div>
                  <h3 className="text-3xl font-bold text-gray-900 mb-2">{stat.value}</h3>
                  <p className="text-gray-600">{stat.label}</p>
                </motion.div>
              );
            })}
          </motion.div>
        </div>
      </section>

      {/* Featured Companies Section */}
      <section className="py-16 bg-gray-50">
        <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
          <div className="text-center mb-12">
            <h2 className="text-4xl font-bold text-gray-900 mb-4">Featured Companies</h2>
            <p className="text-xl text-gray-600 max-w-2xl mx-auto">Top companies actively hiring talented students like you</p>
          </div>

          {featuredCompanies.length > 0 ? (
            <motion.div
              className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-8"
              initial={{ opacity: 0, y: 30 }}
              animate={{ opacity: 1, y: 0 }}
              transition={{ duration: 0.8, delay: 0.3 }}
            >
              {featuredCompanies.map((company, index) => (
                <motion.div
                  key={company.id}
                  initial={{ opacity: 0, y: 20 }}
                  animate={{ opacity: 1, y: 0 }}
                  transition={{ duration: 0.5, delay: 0.5 + index * 0.1 }}
                  whileHover={{ y: -10, scale: 1.02 }}
                >
                  <Card className="group hover:shadow-xl transition-all duration-300 overflow-hidden border-0 bg-white">
                    <div className="relative">
                      <div className="h-48 bg-gradient-to-br from-blue-500 to-indigo-600 flex items-center justify-center">
                        <Building2 className="w-16 h-16 text-white opacity-80" />
                      </div>
                      <div className="absolute top-4 right-4">
                        <Badge className="bg-white/20 text-white border-0">
                          <Star className="w-3 h-3 mr-1" />
                          Featured
                        </Badge>
                      </div>
                    </div>

                    <CardContent className="p-6">
                      <div className="flex items-start justify-between mb-4">
                        <div>
                          <h3 className="text-xl font-bold text-gray-900 mb-2">{company.name}</h3>
                          <p className="text-gray-600 text-sm">{company.email}</p>
                        </div>
                        <Badge variant="secondary" className="bg-blue-100 text-blue-700">
                          {company.jobs.length} jobs
                        </Badge>
                      </div>

                      {company.description && company.description !== 'N/A' && (
                        <p className="text-gray-600 text-sm mb-4 line-clamp-2">{company.description}</p>
                      )}

                      <div className="space-y-2 mb-6">
                        {company.jobs.slice(0, 2).map((job: any) => (
                          <div key={job.id} className="flex items-center justify-between p-3 bg-gray-50 rounded-lg">
                            <div className="flex-1">
                              <h4 className="font-medium text-gray-900 text-sm">{job.title}</h4>
                              <div className="flex items-center gap-4 text-xs text-gray-500 mt-1">
                                {job.location && job.location !== 'N/A' && (
                                  <span className="flex items-center gap-1">
                                    <MapPin className="w-3 h-3" />
                                    {job.location}
                                  </span>
                                )}
                                {job.salary && job.salary !== 'N/A' && (
                                  <span className="flex items-center gap-1">
                                    <DollarSign className="w-3 h-3" />
                                    {job.salary}
                                  </span>
                                )}
                              </div>
                            </div>
                            <Button size="sm" variant="ghost" className="text-blue-600 hover:text-blue-700">
                              <Eye className="w-4 h-4" />
                            </Button>
                          </div>
                        ))}
                      </div>

                      <div className="flex gap-2">
                        <Link href="/jobs">
                          <Button className="flex-1 bg-blue-600 hover:bg-blue-700">
                            View All Jobs
                            <ArrowRight className="w-4 h-4 ml-2" />
                          </Button>
                        </Link>
                        <Button variant="outline" size="sm">
                          <Bookmark className="w-4 h-4" />
                        </Button>
                      </div>
                    </CardContent>
                  </Card>
                </motion.div>
              ))}
            </motion.div>
          ) : (
            <Card className="bg-white shadow-sm">
              <CardContent className="p-12 text-center">
                <Building2 className="w-16 h-16 text-gray-300 mx-auto mb-4" />
                <h3 className="text-xl font-semibold text-gray-700 mb-2">No featured companies yet</h3>
                <p className="text-gray-500 mb-6">Check back later for exciting opportunities</p>
                <Link href="/jobs">
                  <Button className="bg-blue-600 hover:bg-blue-700">Browse All Jobs</Button>
                </Link>
              </CardContent>
            </Card>
          )}
        </div>
      </section>

      {/* Recent Job Opportunities */}
      <section className="py-16 bg-white">
        <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
          <div className="flex items-center justify-between mb-12">
            <div>
              <h2 className="text-4xl font-bold text-gray-900 mb-4">Recent Opportunities</h2>
              <p className="text-xl text-gray-600">Latest job postings from top companies</p>
            </div>
            <Link href="/jobs">
              <Button variant="outline" className="hidden md:flex">
                <Filter className="w-4 h-4 mr-2" />
                Filter Jobs
              </Button>
            </Link>
          </div>

          {recentJobs.length > 0 ? (
            <div className="grid grid-cols-1 lg:grid-cols-2 gap-6">
              {recentJobs.map((job: any) => (
                <Card key={job.id} className="group hover:shadow-lg transition-all duration-300 border border-gray-200">
                  <CardContent className="p-6">
                    <div className="flex items-start justify-between mb-4">
                      <div className="flex items-center gap-4">
                        <div className="w-12 h-12 bg-gradient-to-br from-blue-500 to-indigo-600 rounded-lg flex items-center justify-center">
                          <Building2 className="w-6 h-6 text-white" />
                        </div>
                        <div>
                          <h3 className="text-lg font-semibold text-gray-900 mb-1">{job.title}</h3>
                          <p className="text-blue-600 font-medium">{job.company.name}</p>
                        </div>
                      </div>
                      <div className="flex items-center gap-2">
                        <Badge className="bg-green-100 text-green-700">
                          <CheckCircle className="w-3 h-3 mr-1" />
                          Active
                        </Badge>
                        <Button variant="ghost" size="sm">
                          <Bookmark className="w-4 h-4" />
                        </Button>
                      </div>
                    </div>

                    <div className="grid grid-cols-2 gap-4 mb-4">
                      {job.location && job.location !== 'N/A' && (
                        <div className="flex items-center gap-2 text-sm text-gray-600">
                          <MapPin className="w-4 h-4" />
                          <span>{job.location}</span>
                        </div>
                      )}
                      {job.salary && job.salary !== 'N/A' && (
                        <div className="flex items-center gap-2 text-sm text-gray-600">
                          <DollarSign className="w-4 h-4" />
                          <span>{job.salary}</span>
                        </div>
                      )}
                      <div className="flex items-center gap-2 text-sm text-gray-600">
                        <Clock className="w-4 h-4" />
                        <span>Deadline: {new Date(job.applicationDeadline).toLocaleDateString()}</span>
                      </div>
                      <div className="flex items-center gap-2 text-sm text-gray-600">
                        <Users className="w-4 h-4" />
                        <span>Min CGPA: {job.minCGPA}</span>
                      </div>
                    </div>

                    {job.description && job.description !== 'N/A' && (
                      <p className="text-gray-600 text-sm mb-4 line-clamp-2">{job.description}</p>
                    )}

                    <div className="flex items-center justify-between">
                      <div className="flex gap-2">
                        <Link href="/jobs">
                          <Button size="sm" className="bg-blue-600 hover:bg-blue-700">
                            Apply Now
                            <ArrowRight className="w-4 h-4 ml-2" />
                          </Button>
                        </Link>
                        {job.link && (
                          <Button size="sm" variant="outline">
                            <ExternalLink className="w-4 h-4 mr-2" />
                            View Details
                          </Button>
                        )}
                      </div>
                      <Button variant="ghost" size="sm">
                        <Share2 className="w-4 h-4" />
                      </Button>
                    </div>
                  </CardContent>
                </Card>
              ))}
            </div>
          ) : (
            <Card className="bg-white shadow-sm">
              <CardContent className="p-12 text-center">
                <Briefcase className="w-16 h-16 text-gray-300 mx-auto mb-4" />
                <h3 className="text-xl font-semibold text-gray-700 mb-2">No recent opportunities</h3>
                <p className="text-gray-500 mb-6">Check back later for new job postings</p>
                <Link href="/jobs">
                  <Button className="bg-blue-600 hover:bg-blue-700">Browse All Jobs</Button>
                </Link>
              </CardContent>
            </Card>
          )}

          <div className="text-center mt-12">
            <Link href="/jobs">
              <Button size="lg" variant="outline" className="px-8 py-3">
                View All Opportunities
                <ArrowRight className="w-5 h-5 ml-2" />
              </Button>
            </Link>
          </div>
        </div>
      </section>

      {/* Call to Action */}
      <section className="py-20 bg-gradient-to-r from-blue-600 to-indigo-700 text-white">
        <div className="max-w-4xl mx-auto text-center px-4 sm:px-6 lg:px-8">
          <h2 className="text-4xl font-bold mb-6">Ready to Start Your Career Journey?</h2>
          <p className="text-xl text-blue-100 mb-8">Join thousands of students who have found their dream jobs through NextPlacement</p>
          <div className="flex flex-col sm:flex-row gap-4 justify-center">
            <Link href="/profile">
              <Button size="lg" className="bg-white text-blue-600 hover:bg-blue-50 px-8 py-3 text-lg font-semibold">
                Create Your Profile
                <ArrowRight className="w-5 h-5 ml-2" />
              </Button>
            </Link>
            <Link href="/jobs">
              <Button size="lg" variant="outline" className="border-white text-white hover:bg-white/10 px-8 py-3 text-lg font-semibold">
                Browse Jobs
              </Button>
            </Link>
          </div>
        </div>
      </section>
    </div>
  );
}