import { describe, expect, test } from 'claude-code/testing'

import { createCompanion } from './core'
import { fakeClock, memoryFs } from './fs'
import { dailyLimits, effective, gain, initialRelation, interact, SEVERITY, stageFor, trustLoss } from './relation'
import type { CompanionCore } from './types'

// 測試用原創範例角色，不依賴網路或受版權保護的資料
const MIKO: CompanionCore = {
  id: 'miko',
  name: '月見ミコ',
  facts: {
    birthday: { value: '3/3', source: 'test', kind: 'novel', confidence: 1 },
    zodiac: 'unknown',
    bloodType: 'unknown',
    hair: 'unknown',
    face: 'unknown',
    height: 'unknown',
    weight: 'unknown',
    measurements: 'unknown',
  },
  neuroticism: 50,
  baseline: { p: 0, a: 0, d: 0 },
}
const H = 3_600_000
const DAY = 24 * H
const ROOT = '/h/.companion'

function setup(builtins = [MIKO]) {
  const fs = memoryFs()
  const clock = fakeClock()
  return { fs, clock, c: createCompanion({ fs, clock, root: ROOT, builtins }) }
}

describe('啟用', () => {
  test('第一次啟用自動啟用預設角色，之後不再', async () => {
    const { c } = setup()
    expect((await c.ensureActivated()).first).toBe(true)
    expect((await c.view())?.core.name).toBe('月見ミコ')
    expect((await c.ensureActivated()).first).toBe(false)
  })

  test('off 後沒有角色，且重新啟動不會自動再啟用', async () => {
    const { c } = setup()
    await c.ensureActivated()
    await c.command('off')
    expect(await c.view()).toBe(null)
    await c.ensureActivated()
    expect(await c.view()).toBe(null)
    expect(await c.command('status')).toBe('目前沒有啟用角色。')
  })

  test('切換角色保留原角色資料', async () => {
    const other = { ...MIKO, id: 'ren', name: '蓮' }
    const { c } = setup([MIKO, other])
    await c.ensureActivated()
    await c.moodEvent('thanks')
    const before = (await c.view())!.mood
    expect(await c.command('switch ren')).toContain('蓮')
    expect((await c.view())?.core.id).toBe('ren')
    await c.command('switch miko')
    expect((await c.view())!.mood).toEqual(before)
    expect(await c.command('switch nobody')).toContain('找不到')
  })
})

describe('原子寫入', () => {
  test('不留暫存檔', async () => {
    const { c, fs } = setup()
    await c.ensureActivated()
    await c.moodEvent('thanks')
    expect([...fs.files.keys()].some(k => k.endsWith('.tmp'))).toBe(false)
  })

  test('寫到一半當機時舊資料不損毀', async () => {
    const { c, fs } = setup()
    await c.ensureActivated()
    const path = `${ROOT}/companions/miko/state.json`
    const old = fs.files.get(path)
    const real = fs.rename
    fs.rename = async () => {
      throw new Error('crash')
    }
    await expect(c.moodEvent('thanks')).rejects.toThrow()
    fs.rename = real
    expect(fs.files.get(path)).toBe(old)
  })
})

describe('心情', () => {
  test('事件更新 PAD 並對應標籤', async () => {
    const { c } = setup()
    await c.ensureActivated()
    await c.moodEvent('thanks')
    const v = (await c.view())!
    expect(Math.abs(v.mood.p - (0.15))).toBeLessThan(1e-9)
    expect(v.label).toBe('興奮')
  })

  test('衰減依經過時間回到基線，半衰期 8 小時', async () => {
    const { c, clock } = setup()
    await c.ensureActivated()
    await c.moodEvent('thanks')
    clock.advance(8 * H)
    expect(Math.abs((await c.view())!.mood.p - (0.075))).toBeLessThan(1e-9)
    clock.advance(10 * DAY)
    expect(Math.abs((await c.view())!.mood.p)).toBeLessThan(0.001)
  })

  test('高神經質衰減較慢', async () => {
    const nervous = { ...MIKO, neuroticism: 100 }
    const { c, clock } = setup([nervous])
    await c.ensureActivated()
    await c.moodEvent('thanks')
    clock.advance(8 * H)
    expect((await c.view())!.mood.p).toBeGreaterThan(0.09)
  })

  test('單軸每回合變化不超過 0.3，且不超出 ±1', async () => {
    const { c } = setup()
    await c.ensureActivated()
    for (let i = 0; i < 10; i++) await c.moodEvent('scold')
    expect((await c.view())!.mood.p).toBe(-1)
    const { c: c2 } = setup()
    await c2.ensureActivated()
    await c2.moodEvent('scold')
    expect(Math.abs((await c2.view())!.mood.p - (-0.2))).toBeLessThan(1e-9)
  })

  test('八分區標籤', async () => {
    const { c } = setup()
    await c.ensureActivated()
    await c.moodEvent('scold')
    expect((await c.view())!.label).toBe('焦慮')
    await c.moodEvent('lateNight')
    expect((await c.view())!.label).toBeTruthy()
  })
})

describe('關係四維度與階段', () => {
  const rel = async (c: ReturnType<typeof setup>['c']) => (await c.view())!.relation

  test('從 0 開始，同一天的增量受日限約束', async () => {
    const { c } = setup()
    await c.ensureActivated()
    expect(await rel(c)).toEqual({ affection: 0, trust: 0, intimacy: 0, dependence: 0 })
    for (let i = 0; i < 50; i++) await c.affinityEvent('meaningful')
    const r = await rel(c)
    const lim = dailyLimits()
    expect(r.affection).toBeLessThanOrEqual(lim.affection + 1e-9)
    expect(r.trust).toBeLessThanOrEqual(lim.trust + 1e-9)
    expect(r.intimacy).toBeLessThanOrEqual(lim.intimacy + 1e-9)
    expect(r.dependence).toBeLessThanOrEqual(lim.dependence + 1e-9)
    expect(r.affection).toBeGreaterThan(lim.affection * 0.7)
  })

  test('日限公式依人格傾向調整', () => {
    expect(dailyLimits()).toEqual({ affection: 4, trust: 5 * 0.7, intimacy: 3.5 * 0.8 * 1.2, dependence: 2.5 * 1 })
    expect(dailyLimits({ guard: 1 }).trust).toBeCloseTo(2)
    expect(dailyLimits({ guard: 0 }).trust).toBe(5)
  })

  test('有效增量 = 原始增量 × (1 − 今日累計/日限) × (1 − 目前值/100)', () => {
    let r = initialRelation(0)
    r = gain(r, 'affection', 3)
    expect(r.save.affection).toBeCloseTo(3)
    r = gain(r, 'affection', 3)
    expect(r.save.affection).toBeCloseTo(3 + 3 * (1 - 3 / 4) * (1 - 3 / 100))
    const hi = { ...initialRelation(0), save: { affection: 50, trust: 0, intimacy: 0, dependence: 0 } }
    expect(gain(hi, 'affection', 3).save.affection).toBeCloseTo(50 + 3 * 0.5)
  })

  test('隔天日限重置', async () => {
    const { c, clock } = setup()
    await c.ensureActivated()
    for (let i = 0; i < 20; i++) await c.affinityEvent('meaningful')
    const day1 = (await rel(c)).affection
    clock.advance(DAY)
    for (let i = 0; i < 20; i++) await c.affinityEvent('meaningful')
    expect((await rel(c)).affection).toBeGreaterThan(day1 + 3)
  })

  test('期望違反：被罵扣好感 3，信賴扣得更多，越親密越多，單次上限 30', () => {
    const r0 = { ...initialRelation(0), save: { affection: 20, trust: 40, intimacy: 0, dependence: 0 } }
    const a = interact(r0, 'negative', 0)
    expect(a.save.affection).toBeCloseTo(17)
    expect(a.save.trust).toBeCloseTo(40 - 3 * 1.7)
    const close = interact({ ...r0, save: { ...r0.save, intimacy: 100 } }, 'negative', 0)
    expect(40 - close.save.trust).toBeGreaterThan(40 - a.save.trust)
    expect(trustLoss(3, SEVERITY.lie, 100, 1)).toBeLessThanOrEqual(30)
    expect(trustLoss(100, SEVERITY.lie, 100, 1)).toBe(30)
    expect(trustLoss(3, SEVERITY.lie, 0)).toBeGreaterThan(trustLoss(3, SEVERITY.broken, 0))
    expect(interact(initialRelation(0), 'negative', 0).save.trust).toBeCloseTo(0)
  })

  test('升階條件逐一檢查', () => {
    const d = (affection: number, trust: number, intimacy: number) => ({ affection, trust, intimacy, dependence: 0 })
    expect(stageFor(d(14, 99, 99), 0)).toBe(0)
    expect(stageFor(d(15, 0, 0), 0)).toBe(1)
    expect(stageFor(d(30, 24, 0), 0)).toBe(1)
    expect(stageFor(d(30, 25, 0), 0)).toBe(2)
    expect(stageFor(d(50, 45, 29), 0)).toBe(2)
    expect(stageFor(d(50, 45, 30), 0)).toBe(3)
    expect(stageFor(d(100, 100, 100), 0)).toBe(3) // 不實作曖昧以上
  })

  test('只升不降：數值回落、被罵都不降階', async () => {
    const { c, clock } = setup()
    await c.ensureActivated()
    expect((await c.view())!.stage).toBe('陌生')
    const seen = new Set<string>()
    for (let d = 0; d < 60; d++) {
      for (let i = 0; i < 20; i++) await c.affinityEvent('meaningful')
      seen.add((await c.view())!.stage)
      clock.advance(DAY)
    }
    expect([...seen]).toEqual(['陌生', '熟人', '朋友', '好友'])
    for (let i = 0; i < 40; i++) await c.affinityEvent('negative')
    expect((await rel(c)).trust).toBeLessThan(45)
    expect((await c.view())!.stage).toBe('好友')
  })

  test('久未互動 14 天內不變，之後每天 −0.5，階段不降', async () => {
    const { c, clock } = setup()
    await c.ensureActivated()
    for (let d = 0; d < 20; d++) {
      for (let i = 0; i < 20; i++) await c.affinityEvent('meaningful')
      clock.advance(DAY)
    }
    clock.advance(-DAY)
    const before = await rel(c)
    const stage = (await c.view())!.stage
    clock.advance(14 * DAY)
    expect(await rel(c)).toEqual(before)
    clock.advance(10 * DAY)
    expect((await rel(c)).affection).toBeCloseTo(before.affection - 5)
    expect((await rel(c)).trust).toBeCloseTo(before.trust - 5)
    clock.advance(1000 * DAY)
    expect((await rel(c)).affection).toBe(0)
    expect((await c.view())!.stage).toBe(stage)
  })

  test('原典基準與存檔累積兩本帳相加', () => {
    const base = { affection: 20, trust: 10, intimacy: 0, dependence: 0 }
    const r = interact(initialRelation(0, base), 'meaningful', 0)
    expect(effective(r).affection).toBeCloseTo(20 + 3 * (1 - 20 / 100))
    expect(r.save.affection).toBeLessThan(3)
    expect(r.stage).toBe(1)
  })
})

describe('舊 affinity 存檔升級', () => {
  const legacy = (value: number, stage: number, at: number) => ({
    mood: { p: 0, a: 0, d: 0, at },
    affinity: { value, stage, dayKey: '2026-10-14', dayGain: 0.02, lastSeen: at },
    todos: 0,
  })

  const cases: [number, number, string][] = [
    [0.05, 0, '陌生'],
    [0.3, 1, '熟人'],
    [0.55, 2, '朋友'],
    [0.8, 3, '好友'],
  ]
  for (const [value, stage, name] of cases) test(`value ${value}、stage ${stage} → ${name}，好感值保留`, async () => {
    const { c, fs, clock } = setup()
    await c.ensureActivated()
    await fs.write(`${ROOT}/companions/miko/state.json`, JSON.stringify(legacy(value, stage, clock.now())))
    const v = (await c.view())!
    expect(v.stage).toBe(name)
    expect(v.relation.affection).toBeCloseTo(value * 100)
    const saved = JSON.parse((await fs.read(`${ROOT}/companions/miko/state.json`))!)
    expect(saved.affinity).toBeUndefined()
    expect(saved.relation.stage).toBe(stage)
    expect(saved.relation.dayGain.affection).toBeCloseTo(2)
  })

  test('升級後可繼續互動', async () => {
    const { c, fs, clock } = setup()
    await c.ensureActivated()
    await fs.write(`${ROOT}/companions/miko/state.json`, JSON.stringify(legacy(0.3, 1, clock.now())))
    await c.affinityEvent('meaningful')
    expect((await c.view())!.relation.affection).toBeGreaterThan(30)
  })
})

describe('指令與設定', () => {
  test('status 展開事實欄位與來源，查不到為 unknown', async () => {
    const { c } = setup()
    await c.ensureActivated()
    const out = await c.command('status')
    expect(out).toContain('月見ミコ')
    expect(out).toContain('birthday：3/3（novel，信心 1，test）')
    expect(out).toContain('bloodType：unknown')
  })

  test('setup 寫入共用 user.json，換角色不受影響', async () => {
    const { c, fs } = setup()
    await c.ensureActivated()
    expect(await c.command('setup nickname=阿建 careLimit=3 quietStart=13:00 quietEnd=14:00')).toContain('設定已儲存')
    const u = JSON.parse(fs.files.get(`${ROOT}/user.json`)!)
    expect(u.nickname).toBe('阿建')
    expect(u.careLimit).toBe(3)
    expect(u.quiet).toEqual({ start: '13:00', end: '14:00' })
    expect(await c.command('setup bogus=1')).toContain('無法解析')
    expect((await c.getUser()).nickname).toBe('阿建')
  })

  test('預設角色白上吹雪的事實帶來源', async () => {
    const fs = memoryFs()
    const c = createCompanion({ fs, clock: fakeClock(), root: ROOT })
    await c.ensureActivated()
    const out = await c.command('status')
    expect(out).toContain('白上吹雪')
    expect(out).toContain('hololivepro.com')
    expect(out).toContain('weight：unknown')
  })
})

describe('語氣注入', () => {
  const MIKO_TONE: CompanionCore = { ...MIKO, persona: ['句尾常加「にゃ」'], phrases: ['おはミコ'] }

  test('prompt 含角色名、稱呼、個性、招牌短語與技術內容保留規則', async () => {
    const { c } = setup([MIKO_TONE])
    await c.ensureActivated()
    await c.command('setup nickname=阿建')
    const p = (await c.prompt())!
    expect(p).toContain('月見ミコ')
    expect(p).toContain('阿建')
    expect(p).toContain('にゃ')
    expect(p).toContain('おはミコ')
    expect(p).toContain('逐字保持原樣')
  })

  test('角色關閉時沒有 prompt', async () => {
    const { c } = setup()
    await c.ensureActivated()
    await c.command('off')
    expect(await c.prompt()).toBeNull()
  })

  test('送出提示：責罵降心情與好感，感謝升心情，普通互動累積好感', async () => {
    const { c } = setup()
    await c.ensureActivated()
    await c.onPrompt('請幫我看一下這個函式')
    expect((await c.view())!.relation.affection).toBeCloseTo(3)
    await c.onPrompt('謝謝你')
    expect((await c.view())!.mood.p).toBeGreaterThan(0.1)
    const before = (await c.view())!.relation.affection
    await c.onPrompt('你很煩')
    expect((await c.view())!.relation.affection).toBeLessThan(before)
    expect((await c.view())!.mood.p).toBeLessThan(0.1)
  })
})

describe('記憶、待辦與關心', () => {
  test('提示寫入記憶，之後相關提示會檢索到並進入 prompt', async () => {
    const { c } = setup()
    await c.ensureActivated()
    await c.onPrompt('我正在重構 payment 模組的退款流程')
    await c.onPrompt('接著處理 payment 退款的測試')
    expect(await c.prompt()).toContain('payment')
  })

  test('太短的提示不寫入記憶', async () => {
    const { c, fs } = setup()
    await c.ensureActivated()
    await c.onPrompt('好')
    expect(fs.files.get(`${ROOT}/companions/miko/memory.json`)).toBeUndefined()
  })

  test('todo add/list/done，狀態列待辦數同步', async () => {
    const { c } = setup()
    await c.ensureActivated()
    expect(await c.command('todo add 寫 README')).toContain('#1')
    expect(await c.command('todo promise 週五前補測試')).toContain('【承諾】')
    expect((await c.view())!.todos).toBe(2)
    expect(await c.command('todo')).toContain('寫 README')
    expect(await c.prompt()).toContain('週五前補測試')
    expect(await c.command('todo done 1')).toContain('已完成')
    expect((await c.view())!.todos).toBe(1)
    expect(await c.command('todo done 99')).toContain('找不到')
    expect(await c.command('todo add')).toContain('用法')
  })

  test('todo due 依使用者時區解析，到期後 tick 提醒一次', async () => {
    const { c, clock } = setup()
    await c.ensureActivated()
    await c.command('setup tz=+0800')
    // 2026-10-12 08:00 UTC = 16:00 +0800
    await c.command('todo add 開會 due=2026-10-12T16:00')
    expect(await c.tick()).toEqual([])
    clock.advance(8 * H + 60_000)
    const first = await c.tick()
    expect(first.some(x => x.trigger === 'todo_due' && x.text.includes('開會'))).toBe(true)
    expect((await c.tick()).some(x => x.trigger === 'todo_due')).toBe(false)
  })

  test('連續工具失敗後，下一個提示附帶關心情境並降低心情', async () => {
    const { c } = setup()
    await c.ensureActivated()
    await c.onPrompt('先跑一下測試看看')
    const before = (await c.view())!.mood.p
    for (let i = 0; i < 3; i++) await c.onToolResult(false)
    expect((await c.view())!.mood.p).toBeLessThan(before)
    expect((await c.onPrompt('再試一次')).length).toBeGreaterThan(0)
  })

  test('quiet 靜音期間不送出關心', async () => {
    const { c } = setup()
    await c.ensureActivated()
    expect(await c.command('quiet 30')).toContain('30')
    await c.onPrompt('先跑一下測試看看')
    for (let i = 0; i < 3; i++) await c.onToolResult(false)
    expect(await c.onPrompt('再試一次')).toEqual([])
    expect(await c.command('quiet 0')).toContain('取消')
    expect(await c.command('quiet abc')).toContain('用法')
  })

  test('replying 或 typing 時 tick 不彈出也不消耗待辦提醒', async () => {
    const { c, clock } = setup()
    await c.ensureActivated()
    await c.command('todo add 喝水 due=2026-10-12T00:00')
    clock.advance(H)
    expect(await c.tick({ replying: true })).toEqual([])
    expect((await c.tick()).some(x => x.trigger === 'todo_due')).toBe(true)
  })

  test('session 結束時可鞏固記憶且不拋錯', async () => {
    const { c } = setup()
    await c.ensureActivated()
    await c.onPrompt('我正在重構 payment 模組的退款流程')
    await c.end()
  })
})

describe('預設角色語氣', () => {
  test('白上吹雪預設帶個性描述，prompt 含招牌短語與語氣', async () => {
    const c = createCompanion({ fs: memoryFs(), clock: fakeClock(), root: ROOT })
    await c.ensureActivated()
    const p = (await c.prompt())!
    expect(p).toContain('白上吹雪')
    expect(p).toContain('Good foxy day!')
    expect(p).toContain('狐狸')
  })

  test('舊的本機資料缺少個性時以內建補上，已有的不被覆蓋', async () => {
    const fs = memoryFs()
    const c = createCompanion({ fs, clock: fakeClock(), root: ROOT })
    await c.ensureActivated()
    const path = `${ROOT}/companions/fubuki/core.json`
    const core = JSON.parse(fs.files.get(path)!)
    delete core.persona
    fs.files.set(path, JSON.stringify(core))
    expect(await c.prompt()).toContain('狐狸')
    fs.files.set(path, JSON.stringify({ ...core, persona: ['自訂個性'] }))
    const p = (await c.prompt())!
    expect(p).toContain('自訂個性')
    expect(p).not.toContain('狐狸')
  })
})

describe('工作事件反應', () => {
  test('同一個測試指令失敗後成功：toast 反應，心情變好', async () => {
    const { c, clock } = setup()
    await c.ensureActivated()
    await c.onPrompt('開始跑測試修 bug')
    await c.tick()
    clock.advance(10 * 60_000)
    await c.onToolResult(false, { command: 'bun test' })
    const before = (await c.view())!.mood.p
    await c.onToolResult(true, { command: 'bun test' })
    expect((await c.view())!.mood.p).toBeGreaterThan(before)
    expect((await c.tick()).map(x => x.trigger)).toEqual(['test_recovered'])
  })

  test('沒有轉通過的成功不改變心情', async () => {
    const { c } = setup()
    await c.ensureActivated()
    const before = (await c.view())!.mood
    await c.onToolResult(true, { command: 'bun test' })
    expect((await c.view())!.mood).toEqual(before)
  })

  test('有用過工具的回合結束：toast 反應並提升心情；純聊天不反應', async () => {
    const { c, clock } = setup()
    await c.ensureActivated()
    await c.onPrompt('幫我整理一下目錄結構')
    await c.tick()
    clock.advance(10 * 60_000)
    await c.onTurnComplete(false)
    expect(await c.tick()).toEqual([])
    const before = (await c.view())!.mood.p
    await c.onTurnComplete(true)
    expect((await c.view())!.mood.p).toBeGreaterThan(before)
    expect((await c.tick()).map(x => x.trigger)).toEqual(['turn_done'])
  })

  test('沒有啟用角色時事件被忽略', async () => {
    const { c } = setup()
    await c.ensureActivated()
    await c.command('off')
    await c.onToolResult(true, { command: 'bun test' })
    await c.onTurnComplete(true)
    expect(await c.tick()).toEqual([])
  })

  test('角色資料的 freq 會調整主動頻率', async () => {
    const quiet = { ...MIKO, freq: { turn_done: 0.001 } }
    const { c, clock } = setup([quiet])
    await c.ensureActivated()
    await c.onPrompt('幫我整理一下目錄結構')
    await c.tick()
    clock.advance(10 * 60_000)
    await c.onTurnComplete(true)
    expect((await c.tick()).map(x => x.trigger)).toEqual(['turn_done'])
    clock.advance(2 * 3600_000)
    await c.onTurnComplete(true)
    expect(await c.tick()).toEqual([])
  })
})