import { resolveInputHint } from './metric-input-hint'
import { MetricRendererRegistry } from './metric-renderer-registry'

describe('resolveInputHint (client copy)', () => {
  it('meta 없음 → number 폴백', () => {
    expect(resolveInputHint(null)).toEqual({ widget: 'number', readonly: false })
    expect(resolveInputHint({ collectType: 'AUTO' })).toEqual({ widget: 'number', readonly: true })
  })
  it('rating 기본값(max 5, step 1)', () => {
    expect(resolveInputHint({ meta: { input: { widget: 'rating' } } })).toEqual({
      widget: 'rating',
      max: 5,
      step: 1,
      readonly: false
    })
  })
  it('readonly 명시 false 는 AUTO 라도 존중', () => {
    expect(resolveInputHint({ collectType: 'AUTO', meta: { input: { widget: 'number', readonly: false } } }).readonly).toBe(
      false
    )
  })
})

describe('MetricRendererRegistry', () => {
  const dummy: any = () => null
  beforeEach(() => MetricRendererRegistry.clear())

  it('매칭 없으면 undefined (→ 제네릭)', () => {
    expect(MetricRendererRegistry.resolve({ meta: {} } as any)).toBeUndefined()
  })

  it('predicate 매칭 시 렌더러 반환, 먼저 등록된 것 우선', () => {
    const r1: any = () => 'r1'
    const r2: any = () => 'r2'
    MetricRendererRegistry.register((m: any) => m.name === 'X', r1)
    MetricRendererRegistry.register((m: any) => m.name === 'X', r2)
    expect(MetricRendererRegistry.resolve({ name: 'X' } as any)).toBe(r1)
    expect(MetricRendererRegistry.resolve({ name: 'Y' } as any)).toBeUndefined()
  })

  it('predicate 예외는 매칭 실패로 처리(다음으로 진행)', () => {
    MetricRendererRegistry.register(() => {
      throw new Error('boom')
    }, dummy)
    const ok: any = () => 'ok'
    MetricRendererRegistry.register((m: any) => m.name === 'Z', ok)
    expect(MetricRendererRegistry.resolve({ name: 'Z' } as any)).toBe(ok)
  })
})