describe('Sleep Buddy (睡眠打卡)', () => {
  beforeEach(() => {
    cy.visit('/sleep-buddy', {
      onBeforeLoad(win) {
        win.localStorage.setItem('sp_login_expires', String(Date.now() + 86400000))
      }
    })
  })

  it('shows login form when not logged in as buddy', () => {
    cy.get('.buddy-login').should('be.visible')
    cy.get('.buddy-login-logo').should('contain', '🌙')
    cy.contains('睡眠打卡').should('be.visible')
    cy.contains('和好友一起早睡').should('be.visible')
  })

  it('has username and password fields', () => {
    cy.get('.buddy-login-card input').should('have.length.gte', 2)
    cy.get('.buddy-login-card input[type="password"]').should('exist')
  })

  it('toggle between login and register mode', () => {
    cy.get('.buddy-toggle-btn').should('contain', '没有账号？注册')
    cy.get('.buddy-toggle-btn').click()
    cy.get('.buddy-main-btn').should('contain', '注册')
    cy.get('.buddy-login-card input').should('have.length', 3) // username, password, confirm
    cy.get('.buddy-toggle-btn').should('contain', '已有账号？登录')
  })

  it('register mode shows confirm password', () => {
    cy.get('.buddy-toggle-btn').click()
    cy.get('.buddy-login-card input[type="password"]').should('have.length', 2)
  })

  it('shows error for mismatched passwords during register', () => {
    cy.get('.buddy-toggle-btn').click()
    cy.get('.buddy-login-card input').eq(0).type('testuser')
    cy.get('.buddy-login-card input').eq(1).type('pass1')
    cy.get('.buddy-login-card input').eq(2).type('pass2')
    cy.get('.buddy-main-btn').click()
    cy.get('.buddy-error').should('contain', '密码不一致')
  })

  it('register then login flow', () => {
    const user = 'testuser_' + Date.now()
    // Register
    cy.get('.buddy-toggle-btn').click()
    cy.get('.buddy-login-card input').eq(0).type(user)
    cy.get('.buddy-login-card input').eq(1).type('testpass')
    cy.get('.buddy-login-card input').eq(2).type('testpass')
    cy.get('.buddy-main-btn').click()
    // Should be logged in
    cy.get('.buddy-main', { timeout: 5000 }).should('be.visible')
    cy.contains(user).should('be.visible')
  })

  // Tests that require buddy login
  describe('when logged in', () => {
    const user = 'cy_test_' + Math.random().toString(36).slice(2, 8)

    beforeEach(() => {
      cy.visit('/sleep-buddy', {
        onBeforeLoad(win) {
          win.localStorage.setItem('sp_login_expires', String(Date.now() + 86400000))
          win.localStorage.setItem('buddy_session', JSON.stringify({
            username: user,
            exp: Date.now() + 86400000
          }))
        }
      })
      // Register the user via API first
      cy.window().then(async (win) => {
        const buf = await win.crypto.subtle.digest('SHA-256', new TextEncoder().encode('testpass'))
        const hash = Array.from(new Uint8Array(buf)).map(b => b.toString(16).padStart(2, '0')).join('')
        try {
          await fetch('/api/buddy-register', {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({ username: user, hash })
          })
        } catch {}
      })
    })

    it('shows main buddy interface', () => {
      cy.get('.buddy-main', { timeout: 5000 }).should('be.visible')
      cy.get('.sleep-btn').should('contain', '我去睡觉啦')
    })

    it('shows target time card', () => {
      cy.get('.target-card').should('be.visible')
      cy.get('.target-time').should('not.be.empty')
    })

    it('shows record input', () => {
      cy.get('.record-card').should('be.visible')
      cy.get('.capture-row input').should('be.visible')
    })

    it('records sleep time', () => {
      cy.get('.capture-row input').type('22:30')
      cy.get('.capture-row button').click()
      cy.get('.buddy-hint').should('contain', '已记录')
    })

    it('shows error for unrecognized input', () => {
      cy.get('.capture-row input').type('乱七八糟')
      cy.get('.capture-row button').click()
      cy.get('.buddy-hint').should('contain', '无法识别')
    })

    it('go sleep button sends notification', () => {
      cy.get('.sleep-btn').click()
      cy.get('.buddy-hint').should('contain', '晚安')
    })

    it('user menu shows logout', () => {
      cy.get('.user-chip').click()
      cy.get('.user-menu button').should('contain', '退出登录')
    })

    it('logout returns to login form', () => {
      cy.get('.user-chip').click()
      cy.contains('退出登录').click()
      cy.get('.buddy-login').should('be.visible')
    })
  })
})