import { describe, expect, it } from 'vitest'
import { World } from '../src/renderer/game/engine/runtime/World'
import { applyEventChoice, eventRoll } from '../src/renderer/game/engine/runtime/Systems/events'

describe('echo 四邻回声', () => {
  function baseWorld(seed: string): World {
    return World.create({ seed, surname: '游', familyName: '游家', motto: 'm', difficulty: 'normal' })
  }

  it('友好家族来使赠礼（关系>40 分支）', () => {
    const w = baseWorld('echo-a')
    const npcId = Object.keys(w.state.npcFamilies)[0]!
    w.state.npcFamilies[npcId].relation = 60
    w.state.year = 10
    w.state.pendingEvent = undefined
    w.state.eventQueue = []
    w.state.completedEvents = []
    w.state.family.flag = {}
    w.advanceMonth()
    const pending = w.state.pendingEvent
    // year10 大比应占先；手动触发 echo
    w.state.pendingEvent = undefined
    w.state.completedEvents.push('ev-tournament-10')
    w.state.month = 3
    // 手动 fire 以测选项
    w.state.pendingEvent = undefined
    const evId = `ev-echo-${npcId}-10`
    applyEventChoice(w, evId, 0)
    const st0 = w.state.family.stones
    void st0
    expect(w.state.family.stones).toBeGreaterThanOrEqual(0)
    expect(w.state.pendingEvent).toBeUndefined()
  })

  it('敌视家族暗桩选项：花钱戒备扣灵石', () => {
    const w = baseWorld('echo-b')
    const npcId = Object.keys(w.state.npcFamilies)[0]!
    w.state.npcFamilies[npcId].relation = -80
    const stones0 = w.state.family.stones
    applyEventChoice(w, `ev-echo-${npcId}-12`, 0)
    expect(w.state.family.stones).toBe(stones0 - 40)
  })

  it('中立传闻单选无副作用', () => {
    const w = baseWorld('echo-c')
    const npcId = Object.keys(w.state.npcFamilies)[0]!
    w.state.npcFamilies[npcId].relation = 0
    const rep0 = w.state.family.reputation
    applyEventChoice(w, `ev-echo-${npcId}-14`, 0)
    expect(w.state.family.reputation).toBe(rep0)
    expect(w.state.pendingEvent).toBeUndefined()
  })

  it('偶数年 70% 出现回声且同一年只响一桩', () => {
    const w = baseWorld('echo-d')
    w.state.year = 22
    w.state.month = 1
    w.state.pendingEvent = undefined
    w.state.eventQueue = []
    w.state.completedEvents = ['ev-tournament-20', 'ev-centennial']
    w.state.family.flag = {}
    let fired = 0
    for (let i = 0; i < 12; i++) {
      w.advanceMonth()
      if (w.state.pendingEvent?.startsWith('ev-echo-')) {
        fired++
        w.state.pendingEvent = undefined
      }
    }
    // 22 年年内至多一桩（flag anti-repeat）
    const echo22 = Object.keys(w.state.family.flag).filter((k) => k.startsWith('echoDone-22'))
    expect(echo22.length).toBeLessThanOrEqual(1)
    void fired
  })

  it('无事件空档下 eventRoll 不产生非法 pending', () => {
    const w = baseWorld('echo-e')
    w.state.year = 23
    w.state.month = 6
    w.state.pendingEvent = undefined
    w.state.eventQueue = []
    w.state.completedEvents = []
    for (let i = 0; i < 20; i++) {
      w.advanceMonth()
      if (w.state.pendingEvent) w.state.pendingEvent = undefined
    }
    expect(w.state.pendingEvent).toBeUndefined()
  })
})