import { useMemo } from 'react'
import {
  useGeoRiskScore, useAllQuotes,
  useCalendar, usePortfolioSummary, useLastScores, useAllPatterns, useMacroRegime,
  useTradeMtm, useRiskDashboard,
  useSimPortfolioRisk, useCycleStatus, useKnowledgeState,
} from '../hooks/useApi'
import { Clock, Globe, ShieldAlert, ArrowUpRight, Brain } from 'lucide-react'
import { Link } from 'react-router-dom'
import clsx from 'clsx'
import type { Quote } from '../types'
import { format } from 'date-fns'
import { fr } from 'date-fns/locale'
import { RadarChart, PolarGrid, PolarAngleAxis, Radar, ResponsiveContainer } from 'recharts'
import { scoreColor } from '../components/TradeIdeas'

const riskGauge = (score: number) => {
  if (score < 25) return { color: 'text-emerald-400', bg: 'bg-emerald-500', label: 'FAIBLE' }
  if (score < 50) return { color: 'text-yellow-400', bg: 'bg-yellow-500', label: 'MODÉRÉ' }
  if (score < 75) return { color: 'text-orange-400', bg: 'bg-orange-500', label: 'ÉLEVÉ' }
  return { color: 'text-red-400', bg: 'bg-red-500', label: 'EXTRÊME' }
}

const assetEmoji: Record<string, string> = {
  energy: '⛽', metals: '🥇', agriculture: '🌾', equities: '📈',
  indices: '📊', forex: '💱', crypto: '₿', rates: '📉',
}

function QuoteRow({ q }: { q: Quote }) {
  if (!q.price) return null
  const pos = q.change_pct >= 0
  return (
    <div className="flex items-center justify-between py-1.5 border-b border-slate-700/20 last:border-0">
      <span className="text-xs text-white truncate max-w-[140px]">{q.name || q.symbol}</span>
      <div className="text-right ml-2">
        <div className="text-xs text-white font-mono">{q.price.toFixed(2)}</div>
        <div className={clsx('text-xs font-mono', pos ? 'positive' : 'negative')}>
          {pos ? '+' : ''}{q.change_pct.toFixed(2)}%
        </div>
      </div>
    </div>
  )
}

export default function Dashboard() {
  const { data: riskScore, isLoading: riskLoading } = useGeoRiskScore()
  const { data: allQuotes } = useAllQuotes()
  const { data: calendar } = useCalendar()
  const { data: portfolio } = usePortfolioSummary()
  const { data: lastScoresData } = useLastScores()
  const { data: allPatternsData } = useAllPatterns()
  const { data: macroData } = useMacroRegime()
  const { data: tradeMtmData } = useTradeMtm(30)
  const { data: riskDashboard } = useRiskDashboard()
  const { data: simRisk } = useSimPortfolioRisk()
  const { data: cycleStatusData } = useCycleStatus()
  const { data: knowledgeState } = useKnowledgeState()

  const allPatterns: any[] = allPatternsData ?? []

  const scoreMap = useMemo(() => {
    const map: Record<string, any> = {}
    for (const sp of (lastScoresData?.scored_patterns ?? [])) {
      if (sp.pattern_id) map[sp.pattern_id] = sp
    }
    return map
  }, [lastScoresData])

  const macroInfo = useMemo(() => {
    if (!macroData?.scenarios) return null
    const sc = macroData.scenarios
    const dom = sc.dominant ?? 'incertain'
    const m = sc.meta?.[dom] ?? { label: dom, color: '#94a3b8', emoji: '?' }
    const assetBias: Record<string, string> = sc.asset_bias?.[dom] ?? {}
    return { dominant: dom, label: m.label, color: m.color, emoji: m.emoji, assetBias }
  }, [macroData])

  const gauge = riskScore ? riskGauge(riskScore.score) : null
  const radarData = riskScore?.breakdown
    ? Object.entries(riskScore.breakdown).map(([k, v]) => ({ subject: k.replace('_', ' '), score: v }))
    : []

  return (
    <div className="p-6 space-y-6">
      {/* Header */}
      <div className="flex items-center justify-between">
        <div>
          <h1 className="text-xl font-bold text-white">Cockpit GeoOptions</h1>
          <p className="text-xs text-slate-500 mt-0.5">
            {format(new Date(), "EEEE d MMMM yyyy · HH:mm", { locale: fr })}
          </p>
        </div>
        <div className="flex items-center gap-3">
          {portfolio && portfolio.open_positions > 0 && (
            <div className={clsx('text-sm font-bold', portfolio.unrealized_pnl >= 0 ? 'text-emerald-400' : 'text-red-400')}>
              Portfolio: {portfolio.unrealized_pnl >= 0 ? '+' : ''}{portfolio.unrealized_pnl?.toFixed(0)}€
            </div>
          )}
          <div className="flex items-center gap-2 text-xs text-slate-500">
            <div className="w-2 h-2 rounded-full bg-emerald-400 animate-pulse"></div>
            Live
          </div>
        </div>
      </div>

      {/* Risk concentration banner */}
      {(riskDashboard as any)?.concentration_alerts?.length > 0 && (
        <div className="space-y-1.5">
          {((riskDashboard as any).concentration_alerts as any[]).slice(0, 2).map((alert: any, i: number) => (
            <div key={i} className={clsx('flex items-center gap-2 text-xs px-3 py-2 rounded border', {
              'bg-red-900/20 border-red-700/30 text-red-300': alert.level === 'high',
              'bg-amber-900/20 border-amber-700/30 text-amber-300': alert.level === 'warning',
            })}>
              <ShieldAlert className="w-3 h-3 shrink-0" />
              {alert.message}
              <a href="/risk" className="ml-auto text-slate-500 hover:text-slate-300 underline">Risk Dashboard →</a>
            </div>
          ))}
        </div>
      )}

      {/* Top row */}
      <div className="grid grid-cols-4 gap-4">
        {/* Geo Risk */}
        <div className="card col-span-1">
          <div className="flex items-center justify-between mb-2">
            <div className="section-title flex items-center gap-1 mb-0">
              <Globe className="w-3 h-3" /> Risque Géopolitique
            </div>
            <Link to="/geo" className="flex items-center gap-0.5 text-[10px] text-slate-600 hover:text-slate-300 transition-colors">
              News géo <ArrowUpRight className="w-2.5 h-2.5" />
            </Link>
          </div>
          {riskLoading ? (
            <div className="animate-pulse h-16 bg-dark-600 rounded"></div>
          ) : riskScore && gauge ? (
            <>
              <div className={clsx('text-5xl font-bold', gauge.color)}>{riskScore.score}</div>
              <div className={clsx('text-sm font-semibold mt-1', gauge.color)}>{gauge.label}</div>
              <div className="mt-3 bg-dark-700 rounded-full h-2">
                <div className={clsx('h-2 rounded-full', gauge.bg)} style={{ width: `${riskScore.score}%` }} />
              </div>
              <div className="mt-2 space-y-1">
                {riskScore.top_risks?.map(([cat, val]) => (
                  <div key={cat} className="flex justify-between text-xs">
                    <span className="text-slate-500 capitalize">{(cat as string).replace('_', ' ')}</span>
                    <span className="text-slate-300">{Math.round((val as number) * 100)}%</span>
                  </div>
                ))}
              </div>
            </>
          ) : <div className="text-slate-500 text-xs">Backend requis</div>}
        </div>

        {/* Radar */}
        <div className="card col-span-1">
          <div className="section-title">Cartographie risques</div>
          {radarData.length > 0 ? (
            <ResponsiveContainer width="100%" height={160}>
              <RadarChart data={radarData}>
                <PolarGrid stroke="#1e2d4d" />
                <PolarAngleAxis dataKey="subject" tick={{ fill: '#64748b', fontSize: 9 }} />
                <Radar dataKey="score" stroke="#3b82f6" fill="#3b82f6" fillOpacity={0.25} />
              </RadarChart>
            </ResponsiveContainer>
          ) : <div className="h-40 flex items-center justify-center text-slate-600 text-xs">Chargement...</div>}
        </div>

        {/* Patterns — AI scores */}
        <div className="card col-span-1 overflow-y-auto max-h-64">
          <div className="section-title flex items-center gap-1">
            <Brain className="w-3 h-3" /> Scores patterns
            {allPatterns.length > 0 && <span className="text-slate-600 text-xs ml-auto font-normal">{allPatterns.length} patterns</span>}
          </div>
          <div className="space-y-1.5 mt-1">
            {allPatterns.length === 0 ? (
              <div className="text-slate-600 text-xs">Backend requis</div>
            ) : (
              [...allPatterns]
                .sort((a, b) => {
                  const spA = scoreMap[a.id], spB = scoreMap[b.id]
                  const effA = spA ? Math.max(...[0, ...(spA.trade_rankings ?? []).map((r: any) => (spA.score ?? 0) + (r.score_delta ?? 0))]) : -1
                  const effB = spB ? Math.max(...[0, ...(spB.trade_rankings ?? []).map((r: any) => (spB.score ?? 0) + (r.score_delta ?? 0))]) : -1
                  return effB - effA
                })
                .map(p => {
                  const sp = scoreMap[p.id]
                  const rawScore = sp?.score ?? null
                  const bestEff = sp
                    ? Math.max(rawScore ?? 0, ...(sp.trade_rankings ?? []).map((r: any) =>
                        Math.max(0, Math.min(100, (rawScore ?? 0) + (r.score_delta ?? 0)))))
                    : null
                  return (
                    <div key={p.id} className="flex items-center justify-between gap-2">
                      <span className="text-xs text-slate-300 truncate flex-1 min-w-0">{p.name}</span>
                      {bestEff !== null ? (
                        <span className={clsx('text-xs font-bold shrink-0', scoreColor(bestEff))}>{bestEff}</span>
                      ) : (
                        <span className="text-xs text-slate-600 shrink-0">—</span>
                      )}
                    </div>
                  )
                })
            )}
          </div>
        </div>

        {/* Calendrier */}
        <div className="card col-span-1 space-y-3">
          <div className="section-title flex items-center gap-1"><Clock className="w-3 h-3" /> Prochains catalyseurs</div>
          <div className="space-y-1.5">
            {calendar?.slice(0, 4).map((ev, i) => (
              <div key={i} className="flex items-center gap-2 text-xs">
                <span className={clsx('badge', {
                  'badge-red': ev.importance === 'high',
                  'badge-yellow': ev.importance === 'medium',
                  'badge-blue': ev.importance === 'low',
                })}>
                  {'!'.repeat(ev.importance === 'high' ? 3 : ev.importance === 'medium' ? 2 : 1)}
                </span>
                <div className="min-w-0">
                  <div className="text-white line-clamp-1">{ev.title}</div>
                  <div className="text-slate-600">{ev.date?.slice(0, 10)}</div>
                </div>
              </div>
            ))}
          </div>
        </div>
      </div>

      {/* ── Command Center: Résumé Opérationnel ── */}
      <div className="grid grid-cols-4 gap-3">

        {/* PnL Simulé */}
        {(() => {
          const trades: any[] = (tradeMtmData as any)?.trades ?? []
          const withPnl = trades.filter((t: any) => t.pnl_pct != null)
          const avgPnl = withPnl.length
            ? withPnl.reduce((s: number, t: any) => s + t.pnl_pct, 0) / withPnl.length
            : null
          const winners = withPnl.filter((t: any) => t.pnl_pct > 0).length
          const losers  = withPnl.filter((t: any) => t.pnl_pct < 0).length
          return (
            <Link to="/journal" className="card block hover:border-slate-600/60 transition-all cursor-pointer">
              <div className="flex items-center justify-between mb-1">
                <span className="section-title mb-0 text-[10px]">📊 PnL Simulé</span>
                <ArrowUpRight className="w-3 h-3 text-slate-600" />
              </div>
              <div className={clsx('text-2xl font-bold font-mono mt-1',
                avgPnl === null ? 'text-slate-500' : avgPnl >= 0 ? 'text-emerald-400' : 'text-red-400')}>
                {avgPnl !== null ? `${avgPnl >= 0 ? '+' : ''}${avgPnl.toFixed(1)}%` : '—'}
              </div>
              <div className="text-[10px] text-slate-500 mt-1">
                {trades.length} trades · <span className="text-emerald-500">{winners}✓</span>{' '}
                <span className="text-red-400">{losers}✗</span>
              </div>
            </Link>
          )
        })()}

        {/* Risque Simulé */}
        {(() => {
          const risk = simRisk as any
          const alertCount: number = risk?.alerts?.length ?? 0
          const conflictCount: number = risk?.conflicts?.length ?? 0
          const openCount: number = risk?.open_count ?? 0
          return (
            <Link to="/risk" className="card block hover:border-slate-600/60 transition-all cursor-pointer">
              <div className="flex items-center justify-between mb-1">
                <span className="section-title mb-0 text-[10px]">🛡️ Risque Simulé</span>
                <ArrowUpRight className="w-3 h-3 text-slate-600" />
              </div>
              <div className={clsx('text-2xl font-bold mt-1', alertCount > 0 ? 'text-red-400' : 'text-emerald-400')}>
                {alertCount > 0 ? `${alertCount} alerte${alertCount > 1 ? 's' : ''}` : 'OK'}
              </div>
              <div className="text-[10px] text-slate-500 mt-1">
                {openCount} positions
                {conflictCount > 0 && <span className="text-red-400 ml-1">· {conflictCount} conflit{conflictCount > 1 ? 's' : ''}</span>}
              </div>
            </Link>
          )
        })()}

        {/* Dernier Cycle */}
        {(() => {
          const last = (cycleStatusData as any)?.last_cycle
          const ts = last?.ts
            ? new Date(last.ts.endsWith('Z') ? last.ts : last.ts + 'Z')
            : null
          const elapsed = ts ? Math.round((Date.now() - ts.getTime()) / 60_000) : null
          const elapsedStr = elapsed === null ? '—'
            : elapsed < 60 ? `${elapsed}min`
            : elapsed < 1440 ? `${Math.round(elapsed / 60)}h`
            : `${Math.round(elapsed / 1440)}j`
          return (
            <Link to="/journal" className="card block hover:border-slate-600/60 transition-all cursor-pointer">
              <div className="flex items-center justify-between mb-1">
                <span className="section-title mb-0 text-[10px]">🔄 Dernier Cycle</span>
                <ArrowUpRight className="w-3 h-3 text-slate-600" />
              </div>
              <div className="text-2xl font-bold text-blue-400 mt-1">{elapsedStr}</div>
              <div className="text-[10px] text-slate-500 mt-1">
                {last
                  ? `${last.patterns_added ?? 0} loggés · géo ${last.geo_score ?? '—'}`
                  : 'Aucun cycle enregistré'}
              </div>
            </Link>
          )
        })()}

        {/* Régime Macro */}
        {(() => {
          const dom = macroInfo?.dominant
          const colorClass = dom === 'growth' ? 'text-emerald-400'
            : dom === 'stagflation' || dom === 'recession' ? 'text-red-400'
            : dom === 'deflation' ? 'text-blue-300'
            : 'text-slate-400'
          return (
            <Link to="/macro" className="card block hover:border-slate-600/60 transition-all cursor-pointer">
              <div className="flex items-center justify-between mb-1">
                <span className="section-title mb-0 text-[10px]">🌐 Régime Macro</span>
                <ArrowUpRight className="w-3 h-3 text-slate-600" />
              </div>
              <div className={clsx('text-lg font-bold mt-1', colorClass)}>
                {macroInfo ? `${macroInfo.emoji} ${macroInfo.label}` : '—'}
              </div>
              <div className="text-[10px] text-slate-500 mt-1 line-clamp-1">
                {macroInfo
                  ? Object.entries(macroInfo.assetBias).slice(0, 2).map(([k, v]) => `${k}→${v}`).join(' · ')
                  : 'Chargement...'}
              </div>
            </Link>
          )
        })()}
      </div>

      {/* ── Command Center: Intelligence & Contexte ── */}
      <div className="grid grid-cols-4 gap-3">

        {/* Super Contexte IA */}
        {(() => {
          const state = (knowledgeState as any)?.state
          const synthesis = state?.synthesis
          const insights = (synthesis?.regime_insights?.length ?? 0)
            + (synthesis?.pattern_insights?.length ?? 0)
            + (synthesis?.recurring_mistakes?.length ?? 0)
          const priority = synthesis?.strategic_priorities?.[0]
          const excerpt = typeof priority === 'string' ? priority
            : typeof state?.narrative === 'string' ? state.narrative.slice(0, 90)
            : null
          return (
            <Link to="/super-contexte" className="card block hover:border-slate-600/60 transition-all cursor-pointer">
              <div className="flex items-center justify-between mb-1">
                <span className="section-title mb-0 text-[10px]">🧠 Super Contexte</span>
                <ArrowUpRight className="w-3 h-3 text-slate-600" />
              </div>
              <div className="text-sm font-bold text-purple-400 mt-1">
                {state ? `${insights} insights actifs` : 'Aucune synthèse'}
              </div>
              <div className="text-[10px] text-slate-500 mt-1 line-clamp-2">
                {excerpt ?? 'Lancer une synthèse dans Super Contexte'}
              </div>
            </Link>
          )
        })()}

        {/* Trades du dernier cycle */}
        {(() => {
          const last = (cycleStatusData as any)?.last_cycle
          const added: number = last?.patterns_added ?? 0
          const scored: number = last?.patterns_scored ?? 0
          const geoScore: number | null = last?.geo_score ?? null
          const mtmTrades: any[] = (tradeMtmData as any)?.trades ?? []
          const recent = mtmTrades.slice(0, 3)
          return (
            <Link to="/journal" className="card block hover:border-slate-600/60 transition-all cursor-pointer">
              <div className="flex items-center justify-between mb-1">
                <span className="section-title mb-0 text-[10px]">📥 Trades du cycle</span>
                <ArrowUpRight className="w-3 h-3 text-slate-600" />
              </div>
              <div className="text-2xl font-bold text-emerald-400 mt-1">+{added}</div>
              {recent.length > 0 ? (
                <div className="space-y-0.5 mt-1">
                  {recent.map((t: any) => (
                    <div key={t.id} className="flex justify-between text-[10px]">
                      <span className="text-slate-500 truncate font-mono">{t.underlying ?? '—'}</span>
                      <span className="text-slate-400 shrink-0 ml-1">
                        {t.direction === 'bearish' ? '🐻' : '🐂'}
                      </span>
                    </div>
                  ))}
                </div>
              ) : (
                <div className="text-[10px] text-slate-600 mt-1">
                  {scored > 0 ? `${scored} scorés` : 'Aucun cycle enregistré'}
                  {geoScore !== null && ` · géo ${geoScore}`}
                </div>
              )}
            </Link>
          )
        })()}

        {/* Meilleur Pattern scoré */}
        {(() => {
          const best = [...allPatterns]
            .map(p => ({ p, sp: scoreMap[p.id] }))
            .filter(x => x.sp?.score != null)
            .sort((a, b) => (b.sp.score ?? 0) - (a.sp.score ?? 0))[0]
          const score  = best?.sp?.score ?? null
          const name   = best?.p?.name ?? null
          const ticker = best?.sp?.recommended_trade?.underlying ?? null
          return (
            <Link to="/patterns" className="card block hover:border-slate-600/60 transition-all cursor-pointer">
              <div className="flex items-center justify-between mb-1">
                <span className="section-title mb-0 text-[10px]">⭐ Meilleur Pattern</span>
                <ArrowUpRight className="w-3 h-3 text-slate-600" />
              </div>
              <div className={clsx('text-2xl font-bold font-mono mt-1', score !== null ? scoreColor(score) : 'text-slate-500')}>
                {score ?? '—'}
              </div>
              <div className="text-[10px] text-slate-500 mt-1 line-clamp-1">
                {name ?? 'Aucun scoré'}{ticker ? ` · ${ticker}` : ''}
              </div>
            </Link>
          )
        })()}

        {/* Patterns Actifs */}
        {(() => {
          const total    = allPatterns.length
          const scored   = allPatterns.filter(p => scoreMap[p.id]).length
          const unscored = total - scored
          return (
            <Link to="/patterns" className="card block hover:border-slate-600/60 transition-all cursor-pointer">
              <div className="flex items-center justify-between mb-1">
                <span className="section-title mb-0 text-[10px]">📋 Patterns Actifs</span>
                <ArrowUpRight className="w-3 h-3 text-slate-600" />
              </div>
              <div className="text-2xl font-bold text-slate-200 mt-1">{total}</div>
              <div className="text-[10px] text-slate-500 mt-1">
                <span className="text-emerald-500">{scored} scorés</span>
                {unscored > 0 && <span className="text-slate-600"> · {unscored} à scorer</span>}
              </div>
            </Link>
          )
        })()}
      </div>

      {/* Markets mini overview */}
      <div className="grid grid-cols-4 gap-3">
        {['energy', 'metals', 'indices', 'forex'].map(cls => (
          <div key={cls} className="card">
            <div className="section-title">{assetEmoji[cls]} {cls}</div>
            {allQuotes?.[cls]?.map(q => <QuoteRow key={q.symbol} q={q} />) ?? (
              <div className="text-xs text-slate-600">Chargement...</div>
            )}
          </div>
        ))}
      </div>
    </div>
  )
}