describe('User Management Flow', () => {
  const ADMIN_TOKEN = 'c86ae7afbe10fabe3c1d5e1a7fee74feaadfd5dc7be2ab62'
  const authHeaders = { Authorization: `Bearer ${ADMIN_TOKEN}` }
  const TEST_USERNAME = 'cypress_test_user_e2e'
  const TEST_DISPLAY_NAME = 'Cypress E2E Test User'
  let testUserId = null

  describe('API: user lifecycle', () => {
    // Cleanup any leftover test user first
    before(() => {
      cy.request({
        url: '/api/users',
        headers: authHeaders
      }).then(res => {
        const leftover = res.body.find(u => u.username === TEST_USERNAME)
        if (leftover) {
          cy.request({
            method: 'DELETE',
            url: `/api/users/${leftover.id || leftover._id}`,
            headers: authHeaders,
            failOnStatusCode: false
          })
        }
      })
    })

    it('creates a new test user via API', () => {
      cy.request({
        method: 'POST',
        url: '/api/users',
        headers: authHeaders,
        body: {
          username: TEST_USERNAME,
          display_name: TEST_DISPLAY_NAME,
          role: 'viewer'
        }
      }).then(res => {
        expect(res.status).to.be.oneOf([200, 201])
        testUserId = res.body.id || res.body._id
        // Should return a token for the new user
        if (res.body.token) {
          expect(res.body.token).to.be.a('string')
        }
      })
    })

    it('verifies the user appears in the user list', () => {
      cy.request({
        url: '/api/users',
        headers: authHeaders
      }).then(res => {
        expect(res.body).to.be.an('array')
        const found = res.body.find(u => u.username === TEST_USERNAME)
        expect(found).to.exist
        expect(found.display_name).to.eq(TEST_DISPLAY_NAME)
        expect(found.role).to.eq('viewer')
        testUserId = found.id || found._id
      })
    })

    it('updates user role to editor', () => {
      cy.request({
        url: '/api/users',
        headers: authHeaders
      }).then(res => {
        const found = res.body.find(u => u.username === TEST_USERNAME)
        testUserId = found.id || found._id
        cy.request({
          method: 'PUT',
          url: `/api/users/${testUserId}`,
          headers: authHeaders,
          body: { role: 'editor' }
        }).then(res => {
          expect(res.status).to.eq(200)
        })
      })
    })

    it('verifies role was updated', () => {
      cy.request({
        url: '/api/users',
        headers: authHeaders
      }).then(res => {
        const found = res.body.find(u => u.username === TEST_USERNAME)
        expect(found.role).to.eq('editor')
      })
    })

    it('deletes the test user', () => {
      cy.request({
        url: '/api/users',
        headers: authHeaders
      }).then(res => {
        const found = res.body.find(u => u.username === TEST_USERNAME)
        if (found) {
          testUserId = found.id || found._id
          cy.request({
            method: 'DELETE',
            url: `/api/users/${testUserId}`,
            headers: authHeaders
          }).then(res => {
            expect(res.status).to.eq(200)
          })
        }
      })
    })

    it('verifies the user is deleted', () => {
      cy.request({
        url: '/api/users',
        headers: authHeaders
      }).then(res => {
        const found = res.body.find(u => u.username === TEST_USERNAME)
        expect(found).to.not.exist
      })
    })
  })

  describe('UI: users page renders', () => {
    it('visits /users and verifies page structure', () => {
      cy.visit('/users', {
        onBeforeLoad(win) {
          win.localStorage.setItem('oil_auth_token', ADMIN_TOKEN)
        }
      })
      cy.get('.user-management', { timeout: 10000 }).should('exist')
      cy.contains('用户管理').should('be.visible')
    })

    it('shows search input and role filter buttons', () => {
      cy.visit('/users', {
        onBeforeLoad(win) {
          win.localStorage.setItem('oil_auth_token', ADMIN_TOKEN)
        }
      })
      cy.get('.user-management', { timeout: 10000 }).should('exist')
      // Search box
      cy.get('.search-input').should('exist')
      // Role filter buttons
      cy.get('.filter-btn').should('have.length.gte', 1)
      cy.get('.filter-btn').contains('管理员').should('exist')
      cy.get('.filter-btn').contains('编辑').should('exist')
      cy.get('.filter-btn').contains('查看者').should('exist')
    })

    it('displays user list with user cards', () => {
      cy.visit('/users', {
        onBeforeLoad(win) {
          win.localStorage.setItem('oil_auth_token', ADMIN_TOKEN)
        }
      })
      cy.get('.user-management', { timeout: 10000 }).should('exist')
      cy.get('.user-card', { timeout: 5000 }).should('have.length.gte', 1)
      // Each card shows name and role
      cy.get('.user-card').first().within(() => {
        cy.get('.user-name').should('not.be.empty')
        cy.get('.user-role-badge').should('exist')
      })
    })

    it('search filters users', () => {
      cy.visit('/users', {
        onBeforeLoad(win) {
          win.localStorage.setItem('oil_auth_token', ADMIN_TOKEN)
        }
      })
      cy.get('.user-management', { timeout: 10000 }).should('exist')
      cy.get('.user-card').then($cards => {
        const total = $cards.length
        // Search for something specific
        cy.get('.search-input').type('admin')
        cy.wait(300)
        cy.get('.user-card').should('have.length.lte', total)
      })
    })

    it('role filter narrows user list', () => {
      cy.visit('/users', {
        onBeforeLoad(win) {
          win.localStorage.setItem('oil_auth_token', ADMIN_TOKEN)
        }
      })
      cy.get('.user-management', { timeout: 10000 }).should('exist')
      cy.get('.user-card').then($cards => {
        const total = $cards.length
        // Click a role filter
        cy.get('.filter-btn').contains('管理员').click()
        cy.wait(300)
        cy.get('.user-card').should('have.length.lte', total)
        // Clicking again deactivates the filter
        cy.get('.filter-btn').contains('管理员').click()
        cy.wait(300)
        cy.get('.user-card').should('have.length', total)
      })
    })

    it('shows user count', () => {
      cy.visit('/users', {
        onBeforeLoad(win) {
          win.localStorage.setItem('oil_auth_token', ADMIN_TOKEN)
        }
      })
      cy.get('.user-management', { timeout: 10000 }).should('exist')
      cy.get('.user-count').should('contain', '个用户')
    })

    it('has create user section', () => {
      cy.visit('/users', {
        onBeforeLoad(win) {
          win.localStorage.setItem('oil_auth_token', ADMIN_TOKEN)
        }
      })
      cy.get('.user-management', { timeout: 10000 }).should('exist')
      cy.get('.create-section').should('exist')
      cy.contains('创建新用户').should('be.visible')
    })
  })

  // Safety cleanup
  after(() => {
    cy.request({
      url: '/api/users',
      headers: authHeaders,
      failOnStatusCode: false
    }).then(res => {
      if (res.status === 200 && Array.isArray(res.body)) {
        const testUsers = res.body.filter(u => u.username === TEST_USERNAME)
        testUsers.forEach(user => {
          cy.request({
            method: 'DELETE',
            url: `/api/users/${user.id || user._id}`,
            headers: authHeaders,
            failOnStatusCode: false
          })
        })
      }
    })
  })
})