describe('Navigation & Routing', () => {
  beforeEach(() => {
    cy.visit('/', {
      onBeforeLoad(win) {
        win.localStorage.setItem('sp_login_expires', String(Date.now() + 86400000))
      }
    })
    cy.get('header').should('be.visible')
  })

  it('default tab is 随手记', () => {
    cy.get('.tab-btn').contains('随手记').should('have.class', 'active')
    cy.url().should('eq', Cypress.config('baseUrl') + '/')
  })

  it('clicking tab navigates to correct route', () => {
    const tabs = [
      { label: '待办', path: '/tasks' },
      { label: '提醒', path: '/reminders' },
      { label: '身体', path: '/body' },
      { label: '音乐', path: '/music' },
      { label: '文档', path: '/docs' },
      { label: '日程', path: '/planning' },
      { label: '随手记', path: '/' },
    ]
    tabs.forEach(({ label, path }) => {
      cy.get('.tab-btn').contains(label).click()
      cy.url().should('include', path === '/' ? Cypress.config('baseUrl') : path)
      cy.get('.tab-btn').contains(label).should('have.class', 'active')
    })
  })

  it('direct URL access works for each route', () => {
    const routes = ['/tasks', '/reminders', '/body', '/music', '/docs', '/planning']
    routes.forEach(route => {
      cy.visit(route, {
        onBeforeLoad(win) {
          win.localStorage.setItem('sp_login_expires', String(Date.now() + 86400000))
        }
      })
      cy.get('header').should('be.visible')
    })
  })

  it('back button works between tabs', () => {
    cy.get('.tab-btn').contains('待办').click()
    cy.url().should('include', '/tasks')
    cy.get('.tab-btn').contains('提醒').click()
    cy.url().should('include', '/reminders')
    cy.go('back')
    cy.url().should('include', '/tasks')
  })

  it('unknown route still renders the app (SPA fallback)', () => {
    cy.visit('/nonexistent', {
      onBeforeLoad(win) {
        win.localStorage.setItem('sp_login_expires', String(Date.now() + 86400000))
      }
    })
    cy.get('header').should('be.visible')
  })

  it('sleep buddy route works', () => {
    cy.visit('/sleep-buddy', {
      onBeforeLoad(win) {
        win.localStorage.setItem('sp_login_expires', String(Date.now() + 86400000))
      }
    })
    cy.contains('睡眠打卡').should('be.visible')
  })
})