import { fireEvent, render, screen } from '@testing-library/react'
import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
import '../i18n'
import { JudgmentPanel } from './JudgmentPanel'
import { SeanceContext, initialSeanceState } from '../state/seance'
import type { JudgmentResult, SeanceApi, SeanceState } from '../state/seance'
import type { SpiritEntity } from '../lib/types'
import * as haunting from '../lib/haunting'

const entity: SpiritEntity = {
  id: 'e-1',
  name: 'Mirela',
  epithet: 'the Drowned',
  persona: 'a soft-spoken drowned girl',
  rarity: 'rare',
  voice: { voice_id: 'v-1', pitch: 0.5, rate: 0.5, noise: 0.3, echo: 0.4 },
  visual: { hue: 200, form: 'wisp' },
  quotes: [],
  contact_count: 1,
  discovered_at: '2026-01-01T00:00:00.000Z',
}

function renderPanel(stateOverrides: Partial<SeanceState> = {}) {
  const sendJudgment = vi.fn()
  const state: SeanceState = { ...initialSeanceState, entity, ...stateOverrides }
  const api = { state, sendJudgment } as unknown as SeanceApi
  const utils = render(
    <SeanceContext.Provider value={api}>
      <JudgmentPanel />
    </SeanceContext.Provider>,
  )
  return { ...utils, sendJudgment }
}

function result(overrides: Partial<JudgmentResult> = {}): JudgmentResult {
  return {
    correct: false,
    favorDelta: 0,
    essenceDelta: 0,
    atPeace: false,
    consequence: 'neutral',
    at: 1,
    ...overrides,
  }
}

describe('JudgmentPanel', () => {
  it('shows an empty state with no summoned entity, and no buttons', () => {
    renderPanel({ entity: null })
    expect(screen.getByText(/no presence to judge/i)).toBeTruthy()
    expect(screen.queryByRole('button')).toBeNull()
  })

  it.each([
    ['trust', /^trust$/i],
    ['banish', /^banish$/i],
    ['cross_over', /cross over/i],
    ['test', /^test$/i],
  ] as const)('sends a judgment frame with verdict %s on click', (verdict, label) => {
    const { sendJudgment } = renderPanel()
    fireEvent.click(screen.getByRole('button', { name: label }))
    expect(sendJudgment).toHaveBeenCalledTimes(1)
    expect(sendJudgment).toHaveBeenCalledWith(verdict)
  })

  it('disables the verdict buttons while a judgment is pending', () => {
    renderPanel()
    fireEvent.click(screen.getByRole('button', { name: /^trust$/i }))
    for (const btn of screen.getAllByRole('button')) {
      expect(btn).toBeDisabled()
    }
    expect(screen.getByText(/awaiting the verdict/i)).toBeTruthy()
  })

  it('ignores further clicks while a judgment is already pending', () => {
    const { sendJudgment } = renderPanel()
    fireEvent.click(screen.getByRole('button', { name: /^trust$/i }))
    fireEvent.click(screen.getByRole('button', { name: /^banish$/i }))
    expect(sendJudgment).toHaveBeenCalledTimes(1)
  })

  it('renders a reward treatment for a correct trust', () => {
    renderPanel({ judgmentResult: result({ correct: true, favorDelta: 0.05, essenceDelta: 15, consequence: 'reward' }) })
    expect(screen.getByText(/bond holds/i)).toBeTruthy()
    expect(screen.getByText(/\+0\.05/)).toBeTruthy()
    expect(screen.getByText(/\+15/)).toBeTruthy()
  })

  it('renders a distinct withdrawal treatment for a wrong banish', () => {
    renderPanel({ judgmentResult: result({ favorDelta: -0.06, consequence: 'withdrawal' }) })
    expect(screen.getByText(/recoils/i)).toBeTruthy()
  })

  it('renders a resisted treatment for cross_over on a demon', () => {
    renderPanel({ judgmentResult: result({ consequence: 'resisted' }) })
    expect(screen.getByText(/will not go/i)).toBeTruthy()
  })

  it('renders a neutral treatment for a test verdict', () => {
    renderPanel({ judgmentResult: result({ consequence: 'neutral' }) })
    expect(screen.getByText(/no verdict rendered/i)).toBeTruthy()
  })

  it('renders a distinct calm farewell (not the reward treatment) for crossed_over, with the entity glyph', () => {
    const { container } = renderPanel({
      judgmentResult: result({ correct: true, atPeace: true, essenceDelta: 40, consequence: 'crossed_over' }),
    })
    expect(screen.getByText(/at peace/i)).toBeTruthy()
    expect(screen.queryByText(/bond holds/i)).toBeNull() // not the reward copy
    expect(container.querySelector('.judgment-farewell')).not.toBeNull()
    expect(container.querySelector('.farewell-glyph')).not.toBeNull()
    expect(container.querySelector('.consequence-reward')).toBeNull()
  })

  // A judgment_result always *arrives* after mount (the reducer starts
  // with judgmentResult: null and updates it once the server answers) —
  // simulate that transition with a rerender rather than mounting with
  // the result already present, matching how SeanceProvider actually
  // drives this component.
  function renderThenDeliver(consequence: JudgmentResult['consequence'], overrides: Partial<JudgmentResult> = {}) {
    const sendJudgment = vi.fn()
    const state: SeanceState = { ...initialSeanceState, entity, judgmentResult: null }
    const api = { state, sendJudgment } as unknown as SeanceApi
    const { rerender } = render(
      <SeanceContext.Provider value={api}>
        <JudgmentPanel />
      </SeanceContext.Provider>,
    )
    const nextApi = { ...api, state: { ...state, judgmentResult: result({ consequence, ...overrides }) } }
    rerender(
      <SeanceContext.Provider value={nextApi}>
        <JudgmentPanel />
      </SeanceContext.Provider>,
    )
  }

  it('calls forceEscalate once judgment_result arrives with consequence: escalation', () => {
    const spy = vi.spyOn(haunting, 'forceEscalate').mockImplementation(() => undefined)
    renderThenDeliver('escalation', { favorDelta: -0.12 })
    expect(spy).toHaveBeenCalledTimes(1)
    spy.mockRestore()
  })

  it('does not call forceEscalate for any other consequence', () => {
    const spy = vi.spyOn(haunting, 'forceEscalate').mockImplementation(() => undefined)
    renderThenDeliver('reward')
    expect(spy).not.toHaveBeenCalled()
    spy.mockRestore()
  })
})

describe('JudgmentPanel — pending clears on a fresh result', () => {
  beforeEach(() => {
    vi.spyOn(haunting, 'forceEscalate').mockImplementation(() => undefined)
  })
  afterEach(() => {
    vi.restoreAllMocks()
  })

  it('clears the pending state once judgmentResult changes (rerender simulates the reducer answering)', () => {
    const sendJudgment = vi.fn()
    const state: SeanceState = { ...initialSeanceState, entity, judgmentResult: null }
    const api = { state, sendJudgment } as unknown as SeanceApi

    const { rerender } = render(
      <SeanceContext.Provider value={api}>
        <JudgmentPanel />
      </SeanceContext.Provider>,
    )
    fireEvent.click(screen.getByRole('button', { name: /^test$/i }))
    expect(screen.getByText(/awaiting the verdict/i)).toBeTruthy()

    const nextApi = { ...api, state: { ...state, judgmentResult: result({ consequence: 'neutral' }) } }
    rerender(
      <SeanceContext.Provider value={nextApi}>
        <JudgmentPanel />
      </SeanceContext.Provider>,
    )

    expect(screen.queryByText(/awaiting the verdict/i)).toBeNull()
    for (const btn of screen.getAllByRole('button')) {
      expect(btn).not.toBeDisabled()
    }
  })
})