import { useState } from 'react'
import { useGameStore } from '../store'
import { computeLegacy, resolveLegacy } from '../../game/engine/narrative/legacy'
import { ResolveModal } from '../components/ResolveModal'
import { buildBiography } from '../../game/engine/narrative/biography'
import { yearAxis, decadeLabel } from '../../game/engine/narrative/yearaxis'
import { buildReport, verdictLine } from '../../game/engine/narrative/legacyreport'
import { buildSaga, sagaKindName, sagaKindClass } from '../../game/engine/narrative/saga'
import { buildChronicleScroll, scrollKindName, scrollKindClass } from '../../game/engine/narrative/chronicle-scroll'
import type { WorldSimState } from '../../game/engine/sim/worldsim-data'


export default function LegacyPanel() {
  const world = useGameStore((s) => s.world)
  const revision = useGameStore((s) => s.revision)
  void revision
  const [showResolve, setShowResolve] = useState(false)
  const [view, setView] = useState<'dims' | 'chronicle' | 'report' | 'scroll' | 'axis' | 'legacy' | 'cscroll'>('dims')
  if (!world) return null
  const w = world
  const s = w.state
  const dims = computeLegacy(s)
  const arch = resolveLegacy(s)
  const resolved = !!s.family.flag['resolved']

  const yearly = s.yearlyReports.slice().sort((a, b) => a.year - b.year)
  const births = Object.values(s.members).filter((c) => c.bornYear >= 0)
  const genMin = Math.min(...Object.values(s.members).map((c) => c.bornYear))
  const genMax = Math.max(...Object.values(s.members).map((c) => c.deathYear ?? s.year))

  return (
    <div>
      <div className="help-text">
        春秋原：家族百年气数之图。望气可预演四维，落印后方入青册（不阻继续行旅）。
      </div>
      <div className="card" style={{ display: 'flex', alignItems: 'center', gap: 18, marginBottom: 12 }}>
        <div className="legacy-peak" style={{ width: 86, height: 110 }}>
          <div className="legacy-glyph">望</div>
        </div>
        <div style={{ flex: 1 }}>
          <div style={{ fontSize: '1.04rem', marginBottom: 4 }}>
            当前气数 · 预演称号 <b className="gold" style={{ fontSize: '1.2rem' }}>{arch.title}</b>
            {resolved && <span className="tag head-t" style={{ marginLeft: 8 }}>已定局</span>}
          </div>
          <div className="dim2" style={{ fontSize: '0.85rem' }}>
            存续{s.year}年 · {s.family.generation}代 · 声望峰值{s.stats.repPeak} · 丁口峰值{s.stats.popPeak}
            {s.stats.tourneyBest ? ` · 大比最佳第${s.stats.tourneyBest}名` : ''}
          </div>
        </div>
        <div style={{ display: 'flex', gap: 8 }}>
          {!resolved && (
            <button className="btn btn-primary" onClick={() => setShowResolve(true)}>
              望气定鼎
            </button>
          )}
          <button className="btn" onClick={() => setView('dims')}>四维</button>
          <button className="btn" onClick={() => setView('report')}>年报</button>
          <button className="btn" onClick={() => setView('chronicle')}>年表</button>
          <button className="btn" onClick={() => setView('scroll')}>长卷</button>
          <button className="btn" onClick={() => setView('cscroll')}>族史卷</button>
          <button className="btn" onClick={() => setView('axis')}>年轴</button>
          <button className="btn" onClick={() => setView('legacy')}>百年报告</button>
        </div>
      </div>

      {view === 'dims' && (
        <div className="card">
          <div className="card-title">气数四维</div>
          {Object.entries(dims)
            .filter(([k]) => k !== 'total')
            .map(([k, v]) => (
              <div key={k} className="resolve-dim" style={{ maxWidth: 620 }}>
                <span className="dim">{dimName(k)}</span>
                <div className="bar" style={{ flex: 1 }}>
                  <div style={{ width: `${Math.min(100, (v / 160) * 100)}%` }} />
                </div>
                <b>{v}</b>
              </div>
            ))}
          <div className="resolve-dim" style={{ maxWidth: 620 }}>
            <span className="dim">总评</span>
            <div className="bar" style={{ flex: 1 }}>
              <div style={{ width: `${Math.min(100, (dims.total / 400) * 100)}%`, background: 'linear-gradient(90deg,#8e2f24,#c05a41,#e0c15e)' }} />
            </div>
            <b className="gold">{dims.total}</b>
          </div>
          <div className="dim2" style={{ marginTop: 8 }}>
            人兴=代数·丁口峰值 · 道兴=最高境界·功法大成 · 威名=声望峰·大比最佳 · 香火=存续·飞升 · 因果=功德善恶
          </div>
        </div>
      )}

      {view === 'report' && (
        <div className="card">
          <div className="card-title">岁末族簿汇编（逐年）</div>
          <table className="market-table" style={{ width: '100%' }}>
            <thead>
              <tr>
                <th>年</th><th>灵石盈亏</th><th>诞辰</th><th>辞世</th><th>声望</th><th>宗族战力</th>
              </tr>
            </thead>
            <tbody>
              {yearly.slice(-20).map((r) => (
                <tr key={r.year}>
                  <td>{r.year}年</td>
                  <td className={r.nets >= 0 ? 'good' : 'bad'}>{r.nets >= 0 ? `+${r.nets}` : r.nets}</td>
                  <td>+{r.births}</td>
                  <td className="bad">-{r.deaths}</td>
                  <td>{r.rep}</td>
                  <td>{r.power}</td>
                </tr>
              ))}
            </tbody>
          </table>
          <div className="dim2" style={{ marginTop: 6 }}>共 {yearly.length} 年度账册。</div>
        </div>
      )}

      {view === 'legacy' && <LegacyReportView />}

      {view === 'axis' && <AxisView />}

      {view === 'scroll' && <ScrollScroll />}

      {view === 'cscroll' && <ChronicleScrollView />}

      {view === 'chronicle' && (
        <div className="card">
          <div className="card-title">生卒与突破年表</div>
          <div className="dim" style={{ marginBottom: 6 }}>
            族人生卒带（首倡 {genMin + s.year - s.year} 年 ~ 卒 {genMax} 年，区间 {genMax - genMin} 载）
          </div>
          <div className="dim2" style={{ marginBottom: 10 }}>
            大比记录：{s.stats.tourneyHistory.length === 0 ? '尚无参赛记录' : s.stats.tourneyHistory.map((t) => `${t.year}年第${t.rank}名`).join('、')}
          </div>
          <div className="dim2">
            突破年表（按年份计数）：
            {breakdown(s).length === 0 ? '暂无' : breakdown(s).map((b) => `${b.year}年×${b.n}`).join(' · ')}
          </div>
        </div>
      )}

      {showResolve && <ResolveModal arch={arch} onClose={() => setShowResolve(false)} />}
    </div>
  )
}

function LegacyReportView() {
  const world = useGameStore((s) => s.world)
  if (!world) return null
  const r = buildReport(world.state)
  const span = r.years.length
  return (
    <div className="card">
      <div className="card-title">百年族史报告</div>
      {span < 4 ? (
        <div className="dim">开卷尚浅，待岁月沉淀后再启此卷。</div>
      ) : (
        <>
          <Sparklines r={r} />
          <div className="dim" style={{ marginTop: 10 }}>死因榜：{Object.entries(r.deathCauses).filter(([k]) => k !== '').sort((a, b) => b[1] - a[1]).slice(0, 4).map(([k, v]) => `${k}×${v}`).join(' · ') || '尚无记录'}</div>
          <div className="dim" style={{ marginTop: 6 }}>突破之劲：{r.breakthroughs.slice(-6).map((b) => `${b.year}年×${b.count}`).join(' · ')}</div>
          <div className="resolve-poem" style={{ marginTop: 14 }}>{verdictLine(r)}</div>
          {/* 0.1.40 天下大事记摘要 */}
          {(() => {
            const ws = world.state.worldSim as WorldSimState | undefined
            if (!ws) return null
            const saga = buildSaga(ws).slice(0, 12)
            if (saga.length === 0) return null
            return (
              <div style={{ marginTop: 14 }}>
                <div className="dim" style={{ marginBottom: 4 }}>天下大事记摘要：</div>
                {saga.map((e, i) => (
                  <div key={i} className="ch-item" style={{ padding: '4px 8px', fontSize: '0.84rem' }}>
                    <span className="ch-month">{e.year}年</span>
                    <span className={`tag ${sagaKindClass(e.kind)}`} style={{ marginRight: 6, fontSize: '0.72rem' }}>{sagaKindName(e.kind)}</span>
                    <span className="dim">{e.text}</span>
                  </div>
                ))}
              </div>
            )
          })()}
        </>
      )}
    </div>
  )
}

function Sparklines({ r }: { r: ReturnType<typeof buildReport> }) {
  const width = 640
  const height = 150
  const pts = (seq: number[], color: string) => {
    const max = Math.max(...seq, 1)
    const step = seq.length > 1 ? width / (seq.length - 1) : width
    return seq.map((v, i) => `${(i * step).toFixed(1)},${(height - 20 - (v / max) * (height - 40)).toFixed(1)}`).join(' ')
  }
  return (
    <svg width="100%" viewBox={`0 0 ${width} ${height}`} style={{ maxHeight: 160, background: 'rgba(20,15,9,0.5)', borderRadius: 4 }}>
      <polyline fill="none" stroke="#8fae6a" strokeWidth="2" points={pts(r.population, 'green')} />
      <polyline fill="none" stroke="#c9a227" strokeWidth="2" points={pts(r.reputation, 'gold')} />
      <polyline fill="none" stroke="#a9a9a9" strokeWidth="2" points={pts(r.power, 'gray')} />
      <text x="4" y="14" fill="#8fae6a" fontSize="10">人口</text>
      <text x="64" y="14" fill="#c9a227" fontSize="10">声望</text>
      <text x="124" y="14" fill="#aaa" fontSize="10">战力</text>
    </svg>
  )
}

function AxisView() {
  const world = useGameStore((s) => s.world)
  if (!world) return null
  const cells = yearAxis(world.state)
  return (
    <div className="card">
      <div className="card-title">横轴年表（十年一格）</div>
      {cells.map((c) => (
        <div key={c.from} className="axis-cell">
          <div className="axis-decade">{decadeLabel(c.from, c.to)}</div>
          <div className="axis-events">
            <span className="tag good-t-bg">生 {c.births}</span>
            <span className="tag bad-t-bg">殇 {c.deaths}</span>
            {c.events.slice(0, 6).map((e, i) => (
              <span key={i} className={`tag ${e.kind === '战' || e.kind === '渡劫' ? 'bad-t-bg' : ''}`}>
                {e.kind}·{e.year}年 {e.label}
              </span>
            ))}
            {c.events.length > 6 && <span className="dim2">…还有{c.events.length - 6}件</span>}
          </div>
        </div>
      ))}
    </div>
  )
}

function ScrollScroll() {
  const world = useGameStore((s) => s.world)
  if (!world) return null
  const mem = Object.values(world.state.members).sort((a, b) => b.generation - a.generation || b.bornYear - a.bornYear)
  return (
    <div className="card">
      <div className="card-title">列传长卷</div>
      {mem.slice(0, 40).map((c) => {
        const bio = buildBiography(world.state, c.id)
        const isAscended = c.deathCause === '飞升太虚' || c.deathCause === '云游飞升'
        const isAscensionFall = c.deathCause === '飞升劫陨'
        const isFengxian = c.traits.includes('fengxian') && c.alive
        return (
          <div key={c.id} className="bio-row" style={
            isAscended ? { borderLeft: '3px solid #c9a227', paddingLeft: 8 }
            : isAscensionFall ? { borderLeft: '3px solid #c05a41', paddingLeft: 8 }
            : isFengxian ? { borderLeft: '3px solid #8fae6a', paddingLeft: 8 }
            : undefined
          }>
            <b>{c.name}</b>
            {isAscended && <span className="tag head-t" style={{ marginLeft: 6 }}>飞升</span>}
            {isAscensionFall && <span className="tag bad-t-bg" style={{ marginLeft: 6 }}>劫陨</span>}
            {isFengxian && <span className="tag good-t-bg" style={{ marginLeft: 6 }}>留仙</span>}
            <span className="dim" style={{ marginLeft: 8 }}>
              {bio.map((l) => l.text).join(' ').slice(0, 90)}{bio.map((l) => l.text).join(' ').length > 90 ? '……' : ''}
            </span>
          </div>
        )
      })}
    </div>
  )
}

function ChronicleScrollView() {
  const world = useGameStore((s) => s.world)
  if (!world) return null
  const ws = world.state.worldSim as WorldSimState | undefined
  const scroll = buildChronicleScroll(world.state, ws)
  return (
    <div className="card">
      <div className="card-title">族史卷（天命·族事·天下 串联）</div>
      {scroll.length === 0 ? (
        <div className="dim">开卷尚浅，待岁月沉淀后再启此卷。</div>
      ) : (
        <div style={{ display: 'flex', flexDirection: 'column', gap: 4, maxHeight: 500, overflowY: 'auto' }}>
          {scroll.map((e, i) => (
            <div key={i} className="ch-item" style={{
              padding: '5px 8px',
              borderLeft: e.important ? '3px solid #c9a227' : undefined,
              paddingLeft: e.important ? 10 : 8
            }}>
              <span className="ch-month">{e.year}年</span>
              <span className={`tag ${scrollKindClass(e.kind)}`} style={{ marginRight: 6, fontSize: '0.72rem' }}>{scrollKindName(e.kind)}</span>
              <span className={e.important ? 'gold-t' : ''}>{e.text}</span>
            </div>
          ))}
        </div>
      )}
      <div className="dim2" style={{ marginTop: 8 }}>
        族史卷将天命决策、族中大事与天下大事记串联展示——以时间为经、以事件为纬。
      </div>
    </div>
  )
}

function dimName(k: string): string {
  const map: Record<string, string> = { renXing: '人兴', daoXing: '道兴', weiMing: '威名', xiangHuo: '香火', yinGuo: '因果' }
  return map[k] ?? k
}

function breakdown(s: { chronicle: { category: string; year: number }[] }): { year: number; n: number }[] {
  const counts = new Map<number, number>()
  for (const e of s.chronicle) {
    if (e.category === 'breakthrough') {
      const cur = counts.get(e.year) ?? 0
      counts.set(e.year, cur + 1)
    }
  }
  return [...counts.entries()].map(([year, n]) => ({ year, n })).sort((a, b) => a.year - b.year)
}