import { World } from '../src/renderer/game/engine/runtime/World'
import { GameState } from '../src/renderer/game/types/domain'

export function stateFingerprint(s: GameState): string {
  const parts = [
    s.year, s.month, s.seq, s.totalTicks,
    s.family.stones,
    s.family.reputation,
    s.family.generation,
    JSON.stringify(sortedInv(s.family.inventory)),
    JSON.stringify(sortedBld(s.family.buildings)),
    s.family.headId,
    s.family.techniques.join(','),
    // 0.1.37 因果指纹：karma 值入指纹（因果调制影响灾年/NPC姿态/渡劫——必须锁定）
    `k:${Math.floor((s.family.karma ?? 0) * 10) / 10}`
  ]
  const members = Object.values(s.members)
    .map((c) => `${c.id}:${c.alive}:${c.realm.major}/${c.realm.minor}:${Math.floor(c.realmProgress * 10) / 10}:${Math.floor(c.health * 10) / 10}:${c.state}:${c.bornYear}:${c.techniqueRank ?? 0}:${Math.floor((c.techniqueProgress ?? 0) * 10) / 10}:${c.post ?? ''}:${c.aspiration ?? ''}:${c.spouseId ?? ''}:${c.children.join('-')}`)
    .sort()
  parts.push(members.join('|'))
  parts.push(JSON.stringify(sortedNpc(s.npcFamilies)))
  parts.push(s.missions.length + ':' + s.missions.map((m) => `${m.defId}:${m.stage}:${m.stageMonth}:${m.done}:${m.memberIds.join('+')}`).join(';'))
  parts.push(s.chronicle.length + ':' + s.chronicle.slice(-5).map((e) => `${e.year}${e.month}${e.category}`).join(','))
  parts.push(s.battles.length)
  parts.push(Object.keys(s.completedEvents).length + ':' + s.completedEvents.slice(-3).join(','))
  parts.push(JSON.stringify(sortedFlags(s.family.flag)))
  parts.push(s.yearlyReports.length)
  const ws = s.worldSim
  if (ws) {
    const dyns = Object.entries(ws.npcDyn ?? {})
      .map(([k, d]) => `${k}:${(d as { stance?: string; prosperity?: number }).stance ?? '-'}:${Math.floor((d as { prosperity?: number }).prosperity ?? 0) * 7}:${JSON.stringify((d as { relationsWithOthers?: Record<string, number> }).relationsWithOthers ?? {})}`)
      .join(';')
    parts.push(`ws:${JSON.stringify(ws.marketPool ?? {})}:${JSON.stringify(ws.secretQi ?? {})}:${ws.tide ?? 0}:${ws.npcSuccessions ?? 0}:${(ws.newsFeed ?? []).length}:${ws.era ?? '-'}:${ws.eraStartYear ?? 0}:${ws.calamity ?? '-'}:${ws.calamityLeft ?? 0}:${dyns}`)
  } else {
    parts.push('ws:none')
  }
  parts.push(`pe:${s.pendingEvent ?? '-'}:${s.eventQueue ? s.eventQueue.length : 0}`)
  // P1-8 指纹补盲（0.1.28）：世界轴线全量——sagaAnnals/distress/declineYears/worldGen 摘 req
  const wg = s.worldGen as { npcCount?: number; eras?: string; npcs?: unknown[] } | undefined
  parts.push(`wg:${wg?.npcCount ?? 0}:${wg?.eras ?? '-'}:${wg?.npcs?.length ?? 0}`)
  parts.push(`saga:${(ws?.sagaAnnals ?? []).length}:${((ws?.sagaAnnals ?? []) as { year: number }[]).slice(-1).map((a) => a.year).join(',')}`)
  parts.push(`distress:${ws?.distress?.id ?? '-'}`)
  const declSum = Object.values(ws?.npcDyn ?? {})
    .map((d) => (d as { declineYears?: number })?.declineYears ?? 0)
    .reduce((a, b) => a + b, 0)
  parts.push(`decl:${declSum}`)
  return hash32(parts.join('\u0001'))
}

function sortedInv(inv: Record<string, number>): Array<[string, number]> {
  return Object.entries(inv).sort((a, b) => (a[0] < b[0] ? -1 : 1))
}
function sortedBld(b: Record<string, number>): Array<[string, number]> {
  return Object.entries(b).sort((a, b) => (a[0] < b[0] ? -1 : 1))
}
function sortedFlags(f: Record<string, number | boolean | string>): Array<[string, string]> {
  return Object.entries(f)
    .map(([k, v]) => [k, String(v)] as [string, string])
    .sort((a, b) => (a[0] < b[0] ? -1 : 1))
}
function sortedNpc(n: GameState['npcFamilies']): Array<[string, string]> {
  return Object.entries(n)
    .map(([k, v]) => [k, `${v.relation}:${v.power}:${v.allied}`] as [string, string])
    .sort((a, b) => (a[0] < b[0] ? -1 : 1))
}

function hash32(str: string): string {
  let h = 2166136261
  for (let i = 0; i < str.length; i++) {
    h ^= str.charCodeAt(i)
    h = Math.imul(h, 16777619)
    h = (h << 13) | (h >>> 19)
  }
  return (h >>> 0).toString(16).padStart(8, '0')
}

export function longRun(seed: string, months = 560): World {
  const w = World.create({ seed, surname: '钟', familyName: '钟家', motto: 'm', difficulty: 'normal' })
  for (let i = 0; i < months; i++) {
    if (w.state.gameOver) break
    w.advanceMonth()
  }
  return w
}

/** 自动 resolve 长跑（"现实"世界：每 tick 处理待决事件——与直调冻结世界对照） */
export function longRunResolved(seed: string, months = 560): World {
  const w = World.create({ seed, surname: '钟', familyName: '钟家', motto: 'm', difficulty: 'normal' })
  for (let i = 0; i < months; i++) {
    if (w.state.gameOver) break
    w.advanceMonth()
    let guard = 0
    while (w.state.pendingEvent && guard < 4) {
      w.applyEventChoice(w.state.pendingEvent, 0)
      guard++
    }
  }
  return w
}