import { useGameStore } from '../store'
import { computeGenealogy } from '../../game/engine/narrative/genealogy'
import { describeRealm } from '../../game/data/realms'
import { Character, FamilyState } from '../../game/types/domain'
import { useState } from 'react'
import { MemberModal } from '../components/MemberModal'

export default function GenealogyPanel() {
  const world = useGameStore((s) => s.world)
  const revision = useGameStore((s) => s.revision)
  const selectedMemberId = useGameStore((s) => s.selectedMemberId)
  const setSelected = useGameStore((s) => s.setSelected)
  const [deceasedTab, setDeceasedTab] = useState(false)
  void revision

  if (!world) return null
  const w = world
  const s = w.state
  const rows = computeGenealogy(w)
  const deceased = !deceasedTab
    ? []
    : Object.values(s.members).filter((c) => !c.alive).sort((a, b) => (a.deathYear ?? 0) - (b.deathYear ?? 0))
  const selected = selectedMemberId ? s.members[selectedMemberId] as Character | undefined : undefined

  return (
    <div>
      <div className="help-text">
        宗族谱系：世代分带，夫妻同卷，子孙列后。点任一名字可查详情；染灰者已下世，功绩铭记。
      </div>
      <div style={{ display: 'flex', gap: 6, marginBottom: 10 }}>
        <button
          className={`btn btn-sm ${!deceasedTab ? 'btn-primary' : ''}`}
          onClick={() => setDeceasedTab(false)}
        >
          在世谱系
        </button>
        <button className={`btn btn-sm ${deceasedTab ? 'btn-primary' : ''}`} onClick={() => setDeceasedTab(true)}>
          先人簿（{Object.values(s.members).filter((c) => !c.alive).length}位）
        </button>
      </div>

      {!deceasedTab &&
        rows.map((row) => (
          <div key={row.gen} className="genealogy-row">
            <div className="genealogy-gen">第{row.gen}代</div>
            <div className="genealogy-body">
              {row.units.map((unit, i) => (
                <div key={i} className="genealogy-unit">
                  <div className="genealogy-parents">
                    {unit.parents[0] && <GeneNode c={unit.parents[0]} w={w} />}
                    <div className="genealogy-matron">×</div>
                    {unit.parents[1] && <GeneNode c={unit.parents[1]} w={w} />}
                  </div>
                  {unit.children.length > 0 && (
                    <>
                      <div className="genealogy-drop" />
                      <div className="genealogy-children">
                        {unit.children.map((ch) => (
                          <GeneNode key={ch.id} c={ch} w={w} />
                        ))}
                      </div>
                    </>
                  )}
                </div>
              ))}
              {row.singles.length > 0 && (
                <div className="genealogy-singles">
                  {row.singles.map((c) => (
                    <GeneNode key={c.id} c={c} w={w} />
                  ))}
                </div>
              )}
              {row.units.length + row.singles.length === 0 && <div className="dim2">此代凋零</div>}
            </div>
          </div>
        ))}

      {deceasedTab &&
        deceased.map((c) => (
          <div key={c.id} className="set-row">
            <span>
              <span className="ch-year" style={{ marginRight: 10 }}>殁于{c.deathYear}年</span>
              {c.name} · {c.gender === 'male' ? '男' : '女'} · 第{c.generation}代
              <span className="dim2" style={{ marginLeft: 8 }}>{c.deathCause ?? '寿终'}</span>
            </span>
            <button className="btn btn-sm" onClick={() => setSelected(c.id)}>阅</button>
          </div>
        ))}

      {selected && <MemberModal member={selected} />}
    </div>
  )
}

function GeneNode({ c, w }: { c: Character; w: NonNullable<ReturnType<typeof useGameStore.getState>['world']> }) {
  const setSelected = useGameStore((s) => s.setSelected)
  const isHead = w.state.family.headId === c.id
  const rank = c.techniqueRank ?? 0
  const post = POST_NAME[c.post ?? ''] ?? ''
  return (
    <div
      className={`gene-node ${c.alive ? '' : 'gene-dead'} ${isHead ? 'gene-head' : ''}`}
      onClick={() => setSelected(c.id)}
      title={`${c.name} · ${describeRealm(c.realm)} · ${w.ageOf(c)}岁`}
    >
      <div className="gene-name">
        {c.name}
        {isHead && <span className="tag head-t" style={{ marginLeft: 4 }}>主</span>}
        {post && <span className="tag" style={{ marginLeft: 4 }}>{post}</span>}
        {!c.alive && <span className="tag" style={{ marginLeft: 4 }}>殁</span>}
      </div>
      <div className="gene-sub">
        {c.alive ? `${describeRealm(c.realm)} · ${w.ageOf(c)}岁` : `${c.deathCause ?? '寿终'}${c.deathYear ? `（${c.deathYear}年）` : ''}`}
        {rank > 0 && <span className="tag gold-t" style={{ marginLeft: 4 }}>悟{rank}</span>}
      </div>
    </div>
  )
}

const POST_NAME: Record<string, string> = {
  head: '家主',
  elder: '长老',
  guardian: '供奉',
  steward: '执事',
  master: '掌教'
}

export type { FamilyState }