"use client"

import { useState, useEffect } from 'react'
import { createClient } from '@/lib/supabase/client'
import { Button } from '@/components/ui/button'
import Link from 'next/link'
import { motion } from 'framer-motion'
import { type User } from '@supabase/supabase-js'
import {
  ArrowRight,
  CheckCircle2,
  MessageSquare,
  BookOpen,
  Layers,
  LifeBuoy,
  Users,
  ClipboardList,
  Zap,
  ArrowUpRight,
  ShieldCheck,
  Calendar,
  Sparkles,
  Activity
} from 'lucide-react'
import {
  Dialog,
  DialogContent,
  DialogHeader,
  DialogTitle,
  DialogDescription,
  DialogFooter,
} from '@/components/ui/dialog'

import { AsciiShaderBackground } from '@/components/AsciiShaderBackground'
import { ProcessSteps } from '@/components/ProcessSteps'
import { ScrollIndicator } from '@/components/ScrollIndicator'
import { WorkspaceZentrale } from '@/components/WorkspaceZentrale'
import { useTheme } from '@/components/ThemeProvider'

interface HomeClientProps {
  initialUser: User | null
}

export function HomeClient({ initialUser }: HomeClientProps) {
  const { branding } = useTheme()
  const [user, setUser] = useState<User | null>(initialUser)
  const [mounted, setMounted] = useState(false)
  const [calendarOpen, setCalendarOpen] = useState(false)

  useEffect(() => {
    setMounted(true)
    const supabase = createClient()

    // Listen to client-side auth state changes to stay in sync
    const { data: { subscription } } = supabase.auth.onAuthStateChange((event, session) => {
      setUser(session?.user ?? null)
    })

    return () => {
      subscription.unsubscribe()
    }
  }, [])

  const containerVariants = {
    hidden: { opacity: 0 },
    visible: {
      opacity: 1,
      transition: {
        staggerChildren: 0.15
      }
    }
  }

  const itemVariants = {
    hidden: { y: 20, opacity: 0 },
    visible: {
      y: 0,
      opacity: 1,
      transition: {
        type: "spring" as const,
        stiffness: 100,
        damping: 15
      }
    }
  }

  return (
    <div className="min-h-screen bg-transparent text-slate-100 overflow-hidden relative selection:bg-blue-500/30 selection:text-blue-200">
      <AsciiShaderBackground />



      {/* Hero Section */}
      <section className="w-full pt-16 pb-12 md:pt-28 md:pb-20 px-4 relative flex flex-col items-center">
        <motion.div
          initial="hidden"
          animate="visible"
          variants={containerVariants}
          className="container max-w-6xl mx-auto flex flex-col items-center text-center space-y-8"
        >

          {/* Headline */}
          <div className="space-y-4 max-w-4xl">
            <motion.h1
              variants={itemVariants}
              className="text-4xl font-extrabold tracking-tight sm:text-5xl md:text-6xl lg:text-7xl/tight text-white"
            >
              CASPOS Software <span className="text-blue-500 font-black">Lizenzen & Module</span>
            </motion.h1>
            <motion.p
              variants={itemVariants}
              className="mx-auto max-w-[750px] text-slate-400 text-base sm:text-lg md:text-xl font-normal leading-relaxed"
            >
              Erwerben und verwalten Sie Lizenzen für CASPOS Kassensysteme.
            </motion.p>
          </div>

          {/* Hero CTAs */}
          <motion.div
            variants={itemVariants}
            className="flex flex-col sm:flex-row items-center justify-center gap-4 w-full max-w-md pt-4"
          >
            <Link href="/order" className="w-full sm:w-auto">
              <Button size="lg" className="w-full sm:w-auto h-12 px-8 text-base font-semibold bg-blue-600 hover:bg-blue-500 text-white border border-blue-700/50 rounded-xl transition-all duration-200">
                Lizenz anfragen <ArrowRight className="ml-2 h-4 w-4" />
              </Button>
            </Link>
            <Link href="https://caspos.de/kontakt/" target="_blank" rel="noopener noreferrer" className="w-full sm:w-auto">
              <Button size="lg" variant="outline" className="w-full sm:w-auto h-12 px-8 text-base font-semibold transition-all duration-300 hover:bg-white/5 border-slate-800 hover:border-slate-700 text-slate-300 hover:text-white rounded-xl backdrop-blur-sm">
                Fragen? Kontakt
              </Button>
            </Link>
          </motion.div>

          {/* Quick Access Actions Bar */}
          {mounted && user && (
            <motion.div
              variants={itemVariants}
              className="w-full max-w-3xl pt-12"
            >
              <div className="relative p-6 rounded-2xl border border-slate-800 bg-slate-900/40 backdrop-blur-md shadow-lg">
                <p className="text-xs font-semibold uppercase tracking-widest text-slate-500 mb-5 text-left sm:text-center px-2">
                  Mein Dashboard Schnellzugriff
                </p>

                <div className="grid grid-cols-1 md:grid-cols-3 gap-4">
                  <Link href="/my-customers" className="group">
                    <motion.div
                      whileHover={{ y: -2 }}
                      whileTap={{ scale: 0.98 }}
                      className="flex items-center justify-between p-4 rounded-xl border border-slate-800 bg-slate-950 hover:bg-slate-900 hover:border-slate-700 transition-all duration-200 h-full"
                    >
                      <div className="flex items-center gap-3">
                        <div className="p-2.5 rounded-lg bg-blue-500/10 text-blue-400 group-hover:bg-blue-500/20 group-hover:text-blue-300 transition-colors shrink-0">
                          <Users className="w-5 h-5" />
                        </div>
                        <div className="text-left">
                          <span className="block font-bold text-sm text-slate-200 group-hover:text-white transition-colors">Kundenliste</span>
                          <span className="block text-xs text-slate-500 group-hover:text-slate-400 transition-colors">Verwalten</span>
                        </div>
                      </div>
                      <ArrowUpRight className="w-4 h-4 text-slate-600 group-hover:text-blue-400 group-hover:translate-x-0.5 group-hover:-translate-y-0.5 transition-all shrink-0" />
                    </motion.div>
                  </Link>

                  <Link href="/my-orders" className="group">
                    <motion.div
                      whileHover={{ y: -2 }}
                      whileTap={{ scale: 0.98 }}
                      className="flex items-center justify-between p-4 rounded-xl border border-slate-800 bg-slate-950 hover:bg-slate-900 hover:border-slate-700 transition-all duration-200 h-full"
                    >
                      <div className="flex items-center gap-3">
                        <div className="p-2.5 rounded-lg bg-blue-500/10 text-blue-400 group-hover:bg-blue-500/20 group-hover:text-blue-300 transition-colors shrink-0">
                          <ClipboardList className="w-5 h-5" />
                        </div>
                        <div className="text-left">
                          <span className="block font-bold text-sm text-slate-200 group-hover:text-white transition-colors">Bestellungen</span>
                          <span className="block text-xs text-slate-500 group-hover:text-slate-400 transition-colors">Status einsehen</span>
                        </div>
                      </div>
                      <ArrowUpRight className="w-4 h-4 text-slate-600 group-hover:text-blue-400 group-hover:translate-x-0.5 group-hover:-translate-y-0.5 transition-all shrink-0" />
                    </motion.div>
                  </Link>

                  <button type="button" onClick={() => setCalendarOpen(true)} className="group text-left w-full">
                    <motion.div
                      whileHover={{ y: -2 }}
                      whileTap={{ scale: 0.98 }}
                      className="flex items-center justify-between p-4 rounded-xl border border-slate-800 bg-slate-950 hover:bg-slate-900 hover:border-slate-700 transition-all duration-200 h-full"
                    >
                      <div className="flex items-center gap-3">
                        <div className="p-2.5 rounded-lg bg-blue-500/10 text-blue-400 group-hover:bg-blue-500/20 group-hover:text-blue-300 transition-colors shrink-0">
                          <Calendar className="w-5 h-5" />
                        </div>
                        <div className="text-left">
                          <div className="flex items-center gap-1.5">
                            <span className="block font-bold text-sm text-slate-200 group-hover:text-white transition-colors">Termine</span>
                            <span className="px-1.5 py-0.5 text-[10px] font-medium bg-amber-500/10 text-amber-400 border border-amber-500/20 rounded-md">Geplant</span>
                          </div>
                          <span className="block text-xs text-slate-500 group-hover:text-slate-400 transition-colors">Terminkalender</span>
                        </div>
                      </div>
                      <ArrowUpRight className="w-4 h-4 text-slate-600 group-hover:text-blue-400 group-hover:translate-x-0.5 group-hover:-translate-y-0.5 transition-all shrink-0" />
                    </motion.div>
                  </button>
                </div>
              </div>
            </motion.div>
          )}

        </motion.div>
      </section>

      {/* Dialog / Popup für Termin-Kalender (Geplant) */}
      <Dialog open={calendarOpen} onOpenChange={setCalendarOpen}>
        <DialogContent className="bg-slate-900 border-slate-800 text-slate-100 max-w-md">
          <DialogHeader>
            <div className="flex items-center gap-3 mb-2">
              <div className="p-2.5 rounded-xl bg-blue-500/10 text-blue-400 border border-blue-500/20">
                <Calendar className="w-6 h-6" />
              </div>
              <div>
                <DialogTitle className="text-xl font-bold text-white flex items-center gap-2">
                  Termin-Kalender
                  <span className="px-2 py-0.5 text-xs font-semibold bg-amber-500/10 text-amber-400 border border-amber-500/20 rounded-full">
                    In Planung
                  </span>
                </DialogTitle>
              </div>
            </div>
            <DialogDescription className="text-slate-400 text-sm leading-relaxed pt-2">
              Der Termin-Kalender bietet in Kürze eine Übersicht für anstehende Schulungen, Online- & Vor-Ort-Workshops sowie Termine für Blauer-Mittwoch-Partner zur direkten Anmeldung.
            </DialogDescription>
          </DialogHeader>

          <div className="p-4 my-2 rounded-xl bg-slate-950 border border-slate-800 text-xs text-slate-400 space-y-2">
            <div className="flex items-center justify-between text-slate-300 font-medium">
              <span>Geplante Features & Angebote:</span>
            </div>
            <ul className="list-disc list-inside space-y-1 text-slate-400">
              <li>Anmeldung zu Online- & Vor-Ort-Workshops</li>
              <li>Anstehende Schulungstermine auf einen Blick</li>
              <li>Spezielle Schulungen für Blauer-Mittwoch-Partner</li>
              <li>Kalender-Export (.ics / Google / Outlook)</li>
            </ul>
          </div>

          <DialogFooter>
            <Button
              variant="outline"
              onClick={() => setCalendarOpen(false)}
              className="w-full sm:w-auto border-slate-700 bg-slate-800 text-slate-200 hover:bg-slate-700 hover:text-white"
            >
              Schließen
            </Button>
          </DialogFooter>
        </DialogContent>
      </Dialog>

      {/* Grid of modules / Workspace-Zentrale */}
      <WorkspaceZentrale />

      {/* Stepper info */}
      <ProcessSteps />


      {/* Footer */}
      <footer className="w-full border-t border-slate-900 bg-slate-950 py-8 px-4 md:px-6 relative z-10">
        <div className="container max-w-6xl mx-auto flex flex-col sm:flex-row items-center justify-between gap-4">
          <p className="text-xs text-slate-500">
            {branding?.developerFooter || (branding?.companyName ? `© ${new Date().getFullYear()} ${branding.companyName}. Alle Rechte vorbehalten.` : `© ${new Date().getFullYear()} B2B Shop. Alle Rechte vorbehalten.`)}
          </p>
          <nav className="flex gap-6">
            <Link className="text-xs text-slate-500 hover:text-slate-300 transition-colors" href="/impressum">Impressum</Link>
            <Link className="text-xs text-slate-500 hover:text-slate-300 transition-colors" href="/datenschutz">Datenschutz</Link>
          </nav>
        </div>
      </footer>
    </div>
  )
}