import { describe, it, expect } from 'vitest'
import * as fc from 'fast-check'
import { resolveStampRedeemButton } from '../utils/stamps.js'

describe('Property 10: 印花优惠券兑换状态显示', () => {
  /**
   * **Feature: mobile-app, Property 10: 印花优惠券兑换状态显示**
   * **Validates: Requirements 6.6**
   *
   * 对于任意印花优惠券列表，redeemed为true的优惠券应显示"已兑换"灰色不可点击按钮，
   * redeemed为false的应显示可点击的"兑换"按钮。
   */
  it('兑换按钮状态应根据redeemed和会员状态正确显示', () => {
    const stateArb = fc.record({
      redeemed: fc.boolean(),
      isMember: fc.boolean()
    })

    fc.assert(
      fc.property(stateArb, (state) => {
        const result = resolveStampRedeemButton(state)

        if (state.redeemed) {
          // 已兑换：灰色不可点击，显示"已兑换"
          expect(result.label).toBe('redeemedBtn')
          expect(result.disabled).toBe(true)
          expect(result.action).toBe('none')
        } else if (!state.isMember) {
          // 未兑换 + 非会员：可点击，跳转会员页
          expect(result.label).toBe('redeemBtn')
          expect(result.disabled).toBe(false)
          expect(result.action).toBe('goMembership')
        } else {
          // 未兑换 + 会员：可点击，执行兑换
          expect(result.label).toBe('redeemBtn')
          expect(result.disabled).toBe(false)
          expect(result.action).toBe('redeem')
        }
      }),
      { numRuns: 100 }
    )
  })
})