import { useGameStore } from '../store'
import { MISSIONS, missionById } from '../../game/data/secrets'
import { sendMission, recallAll } from '../../game/engine/runtime/Systems/missions'
import { combatPowerOf } from '../../game/engine/runtime/Systems/combat'
import { useState } from 'react'
import { describeRealm, MAJOR_ORDER } from '../../game/data/realms'
import { FORMATIONS, FormationId } from '../../game/data/formations'
import { WorldSim } from '../../game/engine/sim/WorldSim'

export default function ExpeditionPanel() {
  const world = useGameStore((s) => s.world)
  const bump = useGameStore((s) => s.bump)
  const selectedMissionDef = useGameStore((s) => s.selectedMissionDef)
  const setMissionDef = useGameStore((s) => s.setMissionDef)
  const revision = useGameStore((s) => s.revision)
  void revision
  const [squad, setSquad] = useState<string[]>([])
  const [formation, setFormation] = useState<FormationId>('vanguard')
  if (!world) return null
  const w = world
  const s = w.state
  const active = s.missions.filter((m) => !m.done)
  const candidates = Object.values(s.members).filter(
    (c) => c.alive && w.ageOf(c) >= 16 && c.state !== 'expedition'
  )
  const def = selectedMissionDef ? missionById(selectedMissionDef) : null

  const qiOf = (id: string): number | null => {
    try {
      return Math.round(new WorldSim(w).secretQiOf(id))
    } catch {
      return null
    }
  }

  const toggle = (id: string) => {
    setSquad((old) => (old.includes(id) ? old.filter((x) => x !== id) : [...old, id]))
  }

  return (
    <div>
      <div className="help-text">
        探秘即遣队伍远行：越远越险，收获越丰。途中遇袭会结算战报——带足好手再上路。
        （同期至多三支队伍在外）
      </div>
      <div className="mission-card">
        <div className="card-title" style={{ fontSize: '1rem' }}>择一行路</div>
        <div style={{ display: 'grid', gridTemplateColumns: 'repeat(auto-fill,minmax(180px,1fr))', gap: 8 }}>
          {MISSIONS.map((m) => {
            const sel = selectedMissionDef === m.id
            return (
              <div
                key={m.id}
                style={{
                  border: sel ? '1px solid var(--gold)' : '1px solid var(--line)',
                  borderRadius: 4,
                  padding: '8px 10px',
                  cursor: 'pointer',
                  background: 'var(--panel)'
                }}
                onClick={() => {
                  setMissionDef(sel ? undefined : m.id)
                  setSquad([])
                }}
              >
                <div><span className="s-icon">{m.icon}</span> {m.name}</div>
                <div className="dim2" style={{ fontSize: '0.78rem' }}>{m.region} · 适合{describeRealm({ major: m.realmHint, minor: 0 })}</div>
                <div className="dim2" style={{ fontSize: '0.78rem' }}>{m.minMembers}-{m.maxMembers}人 · {m.stages.length}段</div>
                <div className="dim" style={{ fontSize: '0.8rem', marginTop: 3 }}>{m.desc}</div>
                {qiOf(m.id) !== null && (
                  <div className="dim2" style={{ fontSize: '0.76rem', marginTop: 3 }}>
                    灵脉 {qiOf(m.id)}% （探索后-6，回复2/月；灵气越足所获越丰）
                  </div>
                )}
              </div>
            )
          })}
        </div>

        {def && (
          <div style={{ marginTop: 12, borderTop: '1px solid var(--line)', paddingTop: 10 }}>
            <div className="dim" style={{ marginBottom: 6 }}>
              队伍人选（{squad.length}/{def.maxMembers} 人，至少{def.minMembers}人）
            </div>
            <div className="squad-picker">
              {candidates.map((c) => (
                <div
                  key={c.id}
                  className={`squadian ${squad.includes(c.id) ? 'sel' : ''}`}
                  onClick={() => toggle(c.id)}
                >
                  {c.name}·{describeRealm(c.realm)}·战力{Math.round(combatPowerOf(w, c))}
                </div>
              ))}
              {candidates.length === 0 && <span className="dim2">无可派遣之人</span>}
            </div>
            <div className="formation-pick" style={{ marginBottom: 8 }}>
              {(Object.keys(FORMATIONS) as FormationId[]).map((fid) => (
                <div
                  key={fid}
                  className={`tag ${formation === fid ? 'gold-t' : ''}`}
                  style={{ cursor: 'pointer', padding: '3px 10px' }}
                  onClick={() => setFormation(fid)}
                  title={FORMATIONS[fid].desc}
                >
                  {FORMATIONS[fid].name}
                </div>
              ))}
            </div>
            <button
              className="btn btn-primary"
              disabled={squad.length < def.minMembers || squad.length > def.maxMembers || active.length >= 3}
              onClick={() => {
                sendMission(w, def.id, squad, formation)
                setSquad([])
                bump()
              }}
            >
              遣队发兵
            </button>
          </div>
        )}
      </div>

      {active.length > 0 && (
        <div>
          <div className="card-title" style={{ fontSize: '1rem', marginTop: 8 }}>在外队伍</div>
          {active.map((m) => {
            const def2 = missionById(m.defId)
            const stage = def2.stages[m.stage]
            return (
              <div key={m.id} className="mission-card">
                <div style={{ display: 'flex', alignItems: 'center', gap: 10 }}>
                  <b><span className="s-icon">{def2.icon}</span> {def2.name}</b>
                  <span className="dim2" style={{ fontSize: '0.85rem' }}>
                    {m.memberIds.map((id) => s.members[id]?.name ?? '?').join('、')}
                  </span>
                  <span className="dim" style={{ marginLeft: 'auto', fontSize: '0.85rem' }}>
                    第{m.stage + 1}/{def2.stages.length}段
                    {stage ? ` · ${stage.title}` : ''}
                  </span>
                </div>
                <div className="dim2" style={{ fontSize: '0.8rem', margin: '6px 0' }}>
                  启程 {m.startYear}年{m.startMonth}月 · 途中札记：
                </div>
                <div className="dim" style={{ fontSize: '0.85rem', lineHeight: 1.6 }}>
                  {m.log.slice(-3).map((l, i) => (
                    <div key={i}>· {l}</div>
                  ))}
                </div>
                <button className="btn btn-sm" style={{ marginTop: 6 }} onClick={() => { recallAll(w, m.id); bump() }}>
                  召回
                </button>
              </div>
            )
          })}
        </div>
      )}
    </div>
  )
}