'use client'

import { motion } from 'framer-motion'
import { Language, PitchFunding } from '@/lib/types'
import { t } from '@/lib/i18n'
import ProjectionFooter from '../ui/ProjectionFooter'
import GradientText from '../ui/GradientText'
import FadeInView from '../ui/FadeInView'
import AnimatedCounter from '../ui/AnimatedCounter'
import GlassCard from '../ui/GlassCard'
import { Landmark } from 'lucide-react'
import { Target, Calendar, FileText } from 'lucide-react'
import { PieChart, Pie, Cell, ResponsiveContainer, Tooltip } from 'recharts'

interface TheAskSlideProps {
  lang: Language
  funding: PitchFunding
}

const COLORS = ['#6366f1', '#a78bfa', '#60a5fa', '#34d399', '#fbbf24']

function formatFundingAmount(amount: number): { target: number; suffix: string } {
  if (amount >= 1_000_000) {
    return { target: Math.round(amount / 100_000) / 10, suffix: ' Mio.' }
  }
  if (amount >= 1_000) {
    return { target: Math.round(amount / 1_000), suffix: 'k' }
  }
  return { target: amount, suffix: '' }
}

function formatTargetDate(dateStr: string, lang: Language): string {
  if (!dateStr) return 'TBD'
  try {
    const d = new Date(dateStr)
    const quarter = Math.ceil((d.getMonth() + 1) / 3)
    return `Q${quarter} ${d.getFullYear()}`
  } catch {
    return dateStr
  }
}

export default function TheAskSlide({ lang, funding }: TheAskSlideProps) {
  const i = t(lang)
  const de = lang === 'de'
  const rawFunds = funding?.use_of_funds
  const useOfFunds = Array.isArray(rawFunds) ? rawFunds : (typeof rawFunds === 'string' ? JSON.parse(rawFunds) : [])
  const amount = Number(funding?.amount_eur) || 0
  const { target, suffix } = formatFundingAmount(amount)

  const pieData = useOfFunds.map((item: Record<string, unknown>) => ({
    name: (de ? item.label_de : item.label_en) as string || 'N/A',
    value: Number(item.percentage) || 0,
  }))

  return (
    <div>
      <FadeInView className="text-center mb-10">
        <h2 className="text-4xl md:text-5xl font-bold mb-3">
          <GradientText>{i.theAsk.title}</GradientText>
        </h2>
        <p className="text-lg text-white/50 max-w-2xl mx-auto">{i.theAsk.subtitle}</p>
      </FadeInView>

      {/* Main Number — dynamisch aus funding.amount_eur */}
      <FadeInView delay={0.2} className="text-center mb-10">
        <motion.div
          initial={{ scale: 0.5, opacity: 0 }}
          animate={{ scale: 1, opacity: 1 }}
          transition={{ delay: 0.4, type: 'spring', stiffness: 200 }}
        >
          <p className="text-6xl md:text-8xl font-bold text-white mb-2">
            <AnimatedCounter target={target} suffix={suffix} duration={2000} decimals={suffix === ' Mio.' ? 1 : 0} />
            <span className="text-3xl md:text-4xl text-white/50 ml-2">EUR</span>
          </p>
        </motion.div>
      </FadeInView>

      {/* Details — dynamisch aus funding-Objekt */}
      <div className="grid md:grid-cols-3 gap-4 mb-8">
        <GlassCard delay={0.5} className="text-center p-5">
          <FileText className="w-6 h-6 text-indigo-400 mx-auto mb-2" />
          <p className="text-xs text-white/40 mb-1">{i.theAsk.instrument}</p>
          <p className="text-lg font-bold text-white">{funding?.instrument || 'SAFE'}</p>
        </GlassCard>
        <GlassCard delay={0.6} className="text-center p-5">
          <Calendar className="w-6 h-6 text-purple-400 mx-auto mb-2" />
          <p className="text-xs text-white/40 mb-1">{i.theAsk.targetDate}</p>
          <p className="text-lg font-bold text-white">
            {formatTargetDate(funding?.target_date, lang)}
          </p>
        </GlassCard>
        <GlassCard delay={0.7} className="text-center p-5">
          <Target className="w-6 h-6 text-blue-400 mx-auto mb-2" />
          <p className="text-xs text-white/40 mb-1">{lang === 'de' ? 'Runde' : 'Round'}</p>
          <p className="text-lg font-bold text-white">{funding?.round_name || 'Pre-Seed'}</p>
        </GlassCard>
      </div>

      {/* Use of Funds */}
      <FadeInView delay={0.8}>
        <GlassCard hover={false} className="p-6">
          <h3 className="text-lg font-semibold text-white mb-4 text-center">{i.theAsk.useOfFunds}</h3>
          <div className="flex flex-col md:flex-row items-center gap-8">
            {/* Pie Chart */}
            <div className="w-48 h-48">
              <ResponsiveContainer width="100%" height="100%">
                <PieChart>
                  <Pie
                    data={pieData}
                    cx="50%"
                    cy="50%"
                    innerRadius={50}
                    outerRadius={80}
                    dataKey="value"
                    stroke="none"
                  >
                    {pieData.map((_, idx) => (
                      <Cell key={idx} fill={COLORS[idx % COLORS.length]} />
                    ))}
                  </Pie>
                  <Tooltip
                    contentStyle={{
                      background: 'rgba(10, 10, 26, 0.9)',
                      border: '1px solid rgba(255,255,255,0.1)',
                      borderRadius: 8,
                      color: '#fff',
                      fontSize: 13,
                    }}
                    formatter={(value: number) => `${value}%`}
                  />
                </PieChart>
              </ResponsiveContainer>
            </div>

            {/* Legend */}
            <div className="flex-1 space-y-3">
              {useOfFunds.map((item, idx) => (
                <div key={idx} className="flex items-center gap-3">
                  <div className="w-3 h-3 rounded-full" style={{ backgroundColor: COLORS[idx] }} />
                  <span className="flex-1 text-sm text-white/70">
                    {lang === 'de' ? item.label_de : item.label_en}
                  </span>
                  <span className="text-sm font-bold text-white">{item.percentage}%</span>
                  <span className="text-xs text-white/30">
                    {((amount * item.percentage) / 100).toLocaleString('de-DE')} EUR
                  </span>
                </div>
              ))}
            </div>
          </div>
        </GlassCard>
      </FadeInView>

      {/* INVEST Program Hint */}
      <FadeInView delay={0.6} className="mt-4">
        <div className="bg-gradient-to-r from-indigo-500/10 to-emerald-500/10 border border-indigo-500/20 rounded-xl px-5 py-3">
          <div className="flex items-start gap-3">
            <Landmark className="w-5 h-5 text-indigo-400 mt-0.5 shrink-0" />
            <div>
              <p className="text-sm font-bold text-white mb-1">
                {de ? 'BAFA INVEST — Zuschuss für Wagniskapital' : 'BAFA INVEST — Venture Capital Grant'}
              </p>
              <p className="text-xs text-white/50 leading-relaxed">
                {de
                  ? 'Investoren erhalten über das BAFA INVEST-Programm bis zu 15% steuerfreien Erwerbszuschuss auf ihr Investment (max. 50.000 EUR pro Einzelinvestment) sowie zusätzlich 25% Exit-Zuschuss auf Veräußerungsgewinne. Effektive Förderung: bis zu 40% (Entry + Exit kombiniert). Voraussetzung: natürliche Person, Mindesthaltedauer 3 Jahre.'
                  : 'Investors receive up to 15% tax-free acquisition grant on their investment through the BAFA INVEST program (max. EUR 50,000 per single investment) plus an additional 25% exit grant on capital gains. Effective support: up to 40% (entry + exit combined). Requirements: natural person, 3-year minimum holding period.'}
              </p>
              <p className="text-[11px] text-white/30 mt-1 italic">
                {de
                  ? '* Programm verlängert bis 31.12.2026. Aktuelle Konditionen auf bafa.de prüfen.'
                  : '* Program extended until 31.12.2026. Verify current terms at bafa.de.'}
              </p>
            </div>
          </div>
        </div>
      </FadeInView>

      <ProjectionFooter lang={lang} />
    </div>
  )
}