import { describe, it, expect, beforeEach } from 'vitest'
import { mount } from '@vue/test-utils'
import WarehouseField from './WarehouseField.vue'

describe('WarehouseField (Domain Field)', () => {
  const defaultProps = {
    modelValue: null
  }

  describe('Rendering', () => {
    it('renders warehouse select dropdown', () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      const select = wrapper.find('select')
      expect(select.exists()).toBe(true)
    })

    it('loads warehouse options on mount', async () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      // Wait for mock API call
      await new Promise((resolve) => setTimeout(resolve, 400))

      expect(wrapper.vm.warehouseOptions.length).toBeGreaterThan(0)
    })

    it('displays warehouse details panel when selected', async () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      // Wait for options to load
      await new Promise((resolve) => setTimeout(resolve, 400))

      const select = wrapper.find('select')
      await select.setValue('WH-SEOUL')

      // Wait for warehouse details to load
      await new Promise((resolve) => setTimeout(resolve, 400))

      expect(wrapper.find('.card').exists()).toBe(true)
      expect(wrapper.text()).toContain('Seoul Central')
    })
  })

  describe('Warehouse Selection', () => {
    it('loads selected warehouse details', async () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      await new Promise((resolve) => setTimeout(resolve, 400))

      const select = wrapper.find('select')
      await select.setValue('WH-SEOUL')

      await new Promise((resolve) => setTimeout(resolve, 400))

      expect(wrapper.vm.selectedWarehouse).not.toBeNull()
      expect(wrapper.vm.selectedWarehouse?.name).toBe('Seoul Central')
    })

    it('emits update:modelValue when warehouse selected', async () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      await new Promise((resolve) => setTimeout(resolve, 400))

      const select = wrapper.find('select')
      await select.setValue('WH-BUSAN')

      await new Promise((resolve) => setTimeout(resolve, 400))

      const emitted = wrapper.emitted('update:modelValue')
      expect(emitted).toBeDefined()
      expect(emitted?.[0]?.[0]).toBe('WH-BUSAN')
    })

    it('emits select event with warehouse data', async () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      await new Promise((resolve) => setTimeout(resolve, 400))

      const select = wrapper.find('select')
      await select.setValue('WH-SEOUL')

      await new Promise((resolve) => setTimeout(resolve, 400))

      const emitted = wrapper.emitted('select')
      expect(emitted).toBeDefined()
      expect((emitted?.[0]?.[0] as any).name).toBe('Seoul Central')
    })

    it('clears selection when empty value selected', async () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      await new Promise((resolve) => setTimeout(resolve, 400))

      const select = wrapper.find('select')
      await select.setValue('WH-SEOUL')

      await new Promise((resolve) => setTimeout(resolve, 400))

      expect(wrapper.vm.selectedWarehouse).not.toBeNull()

      await select.setValue('')

      expect(wrapper.vm.selectedWarehouse).toBeNull()
    })
  })

  describe('Capacity Calculation', () => {
    it('calculates capacity percentage correctly', async () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      await new Promise((resolve) => setTimeout(resolve, 400))

      const select = wrapper.find('select')
      await select.setValue('WH-SEOUL')

      await new Promise((resolve) => setTimeout(resolve, 400))

      // Seoul: 7500 / 10000 = 75%
      expect(wrapper.vm.capacityPercent).toBe(75)
    })

    it('shows different capacity percentages for different warehouses', async () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      await new Promise((resolve) => setTimeout(resolve, 400))

      const select = wrapper.find('select')

      // Test Seoul (75%)
      await select.setValue('WH-SEOUL')
      await new Promise((resolve) => setTimeout(resolve, 400))
      expect(wrapper.vm.capacityPercent).toBe(75)

      // Test Busan (20%)
      await select.setValue('WH-BUSAN')
      await new Promise((resolve) => setTimeout(resolve, 400))
      expect(wrapper.vm.capacityPercent).toBe(20)

      // Test Daegu (99%)
      await select.setValue('WH-DAEGU')
      await new Promise((resolve) => setTimeout(resolve, 400))
      expect(wrapper.vm.capacityPercent).toBe(99)
    })
  })

  describe('Capacity Warnings', () => {
    it('shows warning alert when capacity > 75%', async () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      await new Promise((resolve) => setTimeout(resolve, 400))

      const select = wrapper.find('select')
      await select.setValue('WH-SEOUL') // 75%

      await new Promise((resolve) => setTimeout(resolve, 400))

      expect(wrapper.vm.capacityAlert).toBe(true)
    })

    it('does not show warning alert when capacity <= 75%', async () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      await new Promise((resolve) => setTimeout(resolve, 400))

      const select = wrapper.find('select')
      await select.setValue('WH-BUSAN') // 20%

      await new Promise((resolve) => setTimeout(resolve, 400))

      expect(wrapper.vm.capacityAlert).toBe(false)
    })

    it('shows critical alert for > 90% capacity', async () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      await new Promise((resolve) => setTimeout(resolve, 400))

      const select = wrapper.find('select')
      await select.setValue('WH-DAEGU') // 99%

      await new Promise((resolve) => setTimeout(resolve, 400))

      expect(wrapper.vm.capacityAlertClass).toContain('alert-danger')
    })

    it('shows warning alert for 75-90% capacity', async () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      await new Promise((resolve) => setTimeout(resolve, 400))

      const select = wrapper.find('select')
      await select.setValue('WH-SEOUL') // 75%

      await new Promise((resolve) => setTimeout(resolve, 400))

      expect(wrapper.vm.capacityAlertClass).toContain('alert-warning')
    })

    it('shows success alert for < 75% capacity', async () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      await new Promise((resolve) => setTimeout(resolve, 400))

      const select = wrapper.find('select')
      await select.setValue('WH-BUSAN') // 20%

      await new Promise((resolve) => setTimeout(resolve, 400))

      expect(wrapper.vm.capacityAlertClass).toContain('alert-success')
    })
  })

  describe('Status Display', () => {
    it('shows correct status badge for ACTIVE warehouse', async () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      await new Promise((resolve) => setTimeout(resolve, 400))

      const select = wrapper.find('select')
      await select.setValue('WH-SEOUL')

      await new Promise((resolve) => setTimeout(resolve, 400))

      expect(wrapper.vm.statusClass).toContain('bg-success')
    })

    it('shows correct status badge for MAINTENANCE warehouse', async () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      await new Promise((resolve) => setTimeout(resolve, 400))

      const select = wrapper.find('select')
      await select.setValue('WH-DAEGU')

      await new Promise((resolve) => setTimeout(resolve, 400))

      expect(wrapper.vm.statusClass).toContain('bg-warning')
    })
  })

  describe('Sections Display', () => {
    it('displays warehouse sections when available', async () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      await new Promise((resolve) => setTimeout(resolve, 400))

      const select = wrapper.find('select')
      await select.setValue('WH-SEOUL')

      await new Promise((resolve) => setTimeout(resolve, 400))

      expect(wrapper.text()).toContain('Section A')
      expect(wrapper.text()).toContain('Section B')
      expect(wrapper.text()).toContain('Section C')
    })

    it('shows section availability slots', async () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      await new Promise((resolve) => setTimeout(resolve, 400))

      const select = wrapper.find('select')
      await select.setValue('WH-SEOUL')

      await new Promise((resolve) => setTimeout(resolve, 400))

      // Seoul Section A: 30 / 100 slots
      expect(wrapper.text()).toContain('30 / 100 slots')
    })
  })

  describe('Capacity Bar Styling', () => {
    it('shows success color for low capacity', async () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      await new Promise((resolve) => setTimeout(resolve, 400))

      const select = wrapper.find('select')
      await select.setValue('WH-BUSAN') // 20%

      await new Promise((resolve) => setTimeout(resolve, 400))

      expect(wrapper.vm.capacityBarClass).toContain('bg-success')
    })

    it('shows danger color for critical capacity', async () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      await new Promise((resolve) => setTimeout(resolve, 400))

      const select = wrapper.find('select')
      await select.setValue('WH-DAEGU') // 99%

      await new Promise((resolve) => setTimeout(resolve, 400))

      expect(wrapper.vm.capacityBarClass).toContain('bg-danger')
    })

    it('shows warning color for high capacity', async () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      await new Promise((resolve) => setTimeout(resolve, 400))

      const select = wrapper.find('select')
      await select.setValue('WH-SEOUL') // 75%

      await new Promise((resolve) => setTimeout(resolve, 400))

      expect(wrapper.vm.capacityBarClass).toContain('bg-warning')
    })
  })

  describe('Clear Functionality', () => {
    it('clears selection when clear button clicked', async () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      await new Promise((resolve) => setTimeout(resolve, 400))

      const select = wrapper.find('select')
      await select.setValue('WH-SEOUL')

      await new Promise((resolve) => setTimeout(resolve, 400))

      expect(wrapper.vm.selectedWarehouse).not.toBeNull()

      const clearBtn = wrapper.find('.btn-outline-secondary')
      await clearBtn.trigger('click')

      expect(wrapper.vm.selectedWarehouse).toBeNull()
      expect(wrapper.vm.warehouseId).toBe('')
    })
  })

  describe('Props Updates', () => {
    it('loads warehouse when modelValue prop is set', async () => {
      const wrapper = mount(WarehouseField, {
        props: { modelValue: 'WH-SEOUL' }
      })

      await new Promise((resolve) => setTimeout(resolve, 800))

      expect(wrapper.vm.selectedWarehouse).not.toBeNull()
      expect(wrapper.vm.selectedWarehouse?.warehouseId).toBe('WH-SEOUL')
    })
  })

  describe('Loading State', () => {
    it('shows loading indicator while fetching warehouses', async () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      expect(wrapper.vm.isLoading).toBe(true)

      await new Promise((resolve) => setTimeout(resolve, 400))

      expect(wrapper.vm.isLoading).toBe(false)
    })
  })

  describe('Accessibility', () => {
    it('has proper label', () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      expect(wrapper.text()).toContain('Warehouse')
    })

    it('shows required indicator', () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      expect(wrapper.text()).toContain('*')
    })

    it('has aria attributes on progress bar', async () => {
      const wrapper = mount(WarehouseField, { props: defaultProps })

      await new Promise((resolve) => setTimeout(resolve, 400))

      const select = wrapper.find('select')
      await select.setValue('WH-SEOUL')

      await new Promise((resolve) => setTimeout(resolve, 400))

      const progressBar = wrapper.find('[role="progressbar"]')
      expect(progressBar.exists()).toBe(true)
      expect(progressBar.attributes('aria-valuenow')).toBeDefined()
    })
  })
})