import type { World } from '../World'
import { Character } from '../../../types/domain'
import { nextRealm, MAJOR_ORDER, realmDeathChance, describeRealm } from '../../../data/realms'

export const TRIB_MAJORS: string[] = ['foundation', 'core', 'nascent', 'spirit']

export function needsTribulation(c: Character): boolean {
  const next = nextRealm(c.realm)
  if (!next) return false
  if (next.major === c.realm.major) return false
  return TRIB_MAJORS.includes(next.major)
}

export function tribulationEventId(c: Character): string {
  return `ev-trib-${c.id}-${c.realm.major}-${c.realm.minor}`
}

export function resolveTribulation(w: World, c: Character, mode: 'rash' | 'guard' | 'delay'): string {
  if (mode !== 'delay' && (w.state.family.inventory['brew-niang'] ?? 0) > 0 && c.health < 40) {
    // R4 灵酿：受创回气（每渡劫一次至多一瓶——疗伤佳酿）
    w.state.family.inventory['brew-niang'] = w.state.family.inventory['brew-niang']! - 1
    c.health = Math.min(100, c.health + 5)
  }
  const next = nextRealm(c.realm)
  if (!next) return 'peak'

  if (mode === 'delay') {
    c.tribDelayYear = w.state.year + 1
    c.tribBoost = 0
    w.log('info', `${c.name} 按兵不动，引而不发，待来年再渡（丹力渐散）。`)
    return 'delayed'
  }

  let successChance = perTribChance(w, c)
  let guardian: Character | null = null
  if (mode === 'guard') {
    const fam = w.state.family
    if (fam.stones < 100) {
      w.log('bad', '护法之资不足，此行只得咬牙亲渡。')
    } else {
      fam.stones -= 100
      successChance += 0.08
      guardian = w
        .aliveMembers()
        .filter((m) => m.id !== c.id && MAJOR_ORDER.indexOf(m.realm.major) >= MAJOR_ORDER.indexOf(c.realm.major))
        .sort((a, b) => MAJOR_ORDER.indexOf(b.realm.major) - MAJOR_ORDER.indexOf(a.realm.major))[0] ?? null
    }
  }

  const p = Math.min(0.92, Math.max(0.06, successChance))
  const s = w.state
  if (w.rng.chance(p)) {
    c.realm = next
    c.realmProgress = 0
    w.emitFx('spark', `trib:${c.id}`)
    c.health = 100
    c.lastBreakthroughAttempt = s.year * 12 + s.month
    w.chronicle('breakthrough', `${c.name} 渡劫功成，踏入【${describeRealm(next)}】！`, c.id, true)
    w.log('good', `✦ 天雷散尽，${c.name} 渡劫成功，晋阶【${describeRealm(next)}】！`)
    if (next.major === 'spirit' && !s.flags['firstSpirit']) {
      s.flags['firstSpirit'] = s.year
    }
    return 'success'
  }

  // 失败
  c.lastBreakthroughAttempt = s.year * 12 + s.month
  c.realmProgress = Math.max(0, 100 - 28 - w.rng.int(0, 12))
  c.health = Math.max(1, c.health - 22 - w.rng.int(0, 12))
  if (c.health < 20) c.state = 'wounded'
  let text = `${c.name} 渡劫失败，肉身受创。`
  const danger = realmDeathChance(c.realm, c.mind)
  if (w.rng.chance(danger)) {
    c.alive = false
    c.deathYear = s.year
    c.deathCause = '渡劫陨落'
    w.chronicle('death', `${c.name} 天劫加身，灵石俱焚而陨。`, c.id, true)
    w.log('bad', `☠ ${c.name} 渡劫陨落。`)
    return 'dead'
  }
  if (guardian) {
    const g = guardian
    if (w.rng.chance(0.5)) {
      g.health = Math.max(1, g.health - 15 - w.rng.int(0, 15))
      if (g.health < 25) g.state = 'wounded'
      w.log('bad', `${g.name} 为护法所伤。`)
    }
  }
  w.log('bad', text)
  return 'fail'
}

export function perTribChance(w: World, c: Character): number {
  const base = ({
    foundation: 0.6,
    core: 0.5,
    nascent: 0.36,
    spirit: 0.26
  } as Record<string, number>)[c.realm.major] ?? 0.9
  return Math.min(0.92, base + c.mind * 0.01 + c.health / 400 + (c.tribBoost ?? 0))
}