import { mount } from '@vue/test-utils'
import { createPinia, setActivePinia } from 'pinia'
import PrimeVue from 'primevue/config'
import InputText from 'primevue/inputtext'
import { describe, expect, it, vi } from 'vitest'
import { createI18n } from 'vue-i18n'

import type { VueNodeData } from '@/composables/graph/useGraphNodeManager'
import enMessages from '@/locales/en/main.json'
import { useSettingStore } from '@/platform/settings/settingStore'
import type { Settings } from '@/schemas/apiSchema'
import type { ComfyNodeDef } from '@/schemas/nodeDefSchema'
import { ComfyNodeDefImpl, useNodeDefStore } from '@/stores/nodeDefStore'

import NodeHeader from './NodeHeader.vue'

const makeNodeData = (overrides: Partial<VueNodeData> = {}): VueNodeData => ({
  id: '1',
  title: 'KSampler',
  type: 'KSampler',
  mode: 0,
  selected: false,
  executing: false,
  widgets: [],
  inputs: [],
  outputs: [],
  flags: { collapsed: false },
  ...overrides
})

const setupMockStores = () => {
  const pinia = createPinia()
  setActivePinia(pinia)

  const settingStore = useSettingStore()
  const nodeDefStore = useNodeDefStore()

  // Mock tooltip delay setting
  vi.spyOn(settingStore, 'get').mockImplementation(
    <K extends keyof Settings>(key: K): Settings[K] => {
      switch (key) {
        case 'Comfy.EnableTooltips':
          return true as Settings[K]
        case 'LiteGraph.Node.TooltipDelay':
          return 500 as Settings[K]
        default:
          return undefined as Settings[K]
      }
    }
  )

  // Mock node definition store
  const baseMockNodeDef: ComfyNodeDef = {
    name: 'KSampler',
    display_name: 'KSampler',
    category: 'sampling',
    python_module: 'test_module',
    description: 'Advanced sampling node for diffusion models',
    input: {
      required: {
        model: ['MODEL', {}],
        positive: ['CONDITIONING', {}],
        negative: ['CONDITIONING', {}]
      },
      optional: {},
      hidden: {}
    },
    output: ['LATENT'],
    output_is_list: [false],
    output_name: ['samples'],
    output_node: false,
    deprecated: false,
    experimental: false
  }

  const mockNodeDef = new ComfyNodeDefImpl(baseMockNodeDef)

  vi.spyOn(nodeDefStore, 'nodeDefsByName', 'get').mockReturnValue({
    KSampler: mockNodeDef
  })

  return { settingStore, nodeDefStore, pinia }
}

const createMountConfig = () => {
  const i18n = createI18n({
    legacy: false,
    locale: 'en',
    messages: { en: enMessages }
  })

  const { pinia } = setupMockStores()

  return {
    global: {
      plugins: [PrimeVue, i18n, pinia],
      components: { InputText },
      directives: {
        tooltip: {
          mounted: vi.fn(),
          updated: vi.fn(),
          unmounted: vi.fn()
        }
      },
      provide: {
        tooltipContainer: { value: document.createElement('div') }
      }
    }
  }
}

const mountHeader = (
  props?: Partial<InstanceType<typeof NodeHeader>['$props']>
) => {
  const config = createMountConfig()

  return mount(NodeHeader, {
    ...config,
    props: {
      nodeData: makeNodeData(),
      readonly: false,
      collapsed: false,
      ...props
    }
  })
}

describe('NodeHeader.vue', () => {
  it('emits collapse when collapse button is clicked', async () => {
    const wrapper = mountHeader()
    const btn = wrapper.get('[data-testid="node-collapse-button"]')
    await btn.trigger('click')
    expect(wrapper.emitted('collapse')).toBeTruthy()
  })

  it('shows the current node title and updates when prop changes', async () => {
    const wrapper = mountHeader({
      nodeData: makeNodeData({ title: 'Original' })
    })
    // Title visible via EditableText in view mode
    expect(wrapper.get('[data-testid="node-title"]').text()).toContain(
      'Original'
    )

    // Update prop title; should sync displayTitle
    await wrapper.setProps({ nodeData: makeNodeData({ title: 'Updated' }) })
    expect(wrapper.get('[data-testid="node-title"]').text()).toContain(
      'Updated'
    )
  })

  it('allows renaming via double click and emits update:title on confirm', async () => {
    const wrapper = mountHeader({ nodeData: makeNodeData({ title: 'Start' }) })

    // Enter edit mode
    await wrapper.get('[data-testid="node-header-1"]').trigger('dblclick')

    // Edit and confirm (EditableText uses blur or enter to emit)
    const input = wrapper.get('[data-testid="node-title-input"]')
    await input.setValue('My Custom Sampler')
    await input.trigger('keyup.enter')
    await input.trigger('blur')

    // NodeHeader should emit update:title with trimmed value
    const e = wrapper.emitted('update:title')
    expect(e).toBeTruthy()
    expect(e?.[0]).toEqual(['My Custom Sampler'])
  })

  it('cancels rename on escape and keeps previous title', async () => {
    const wrapper = mountHeader({ nodeData: makeNodeData({ title: 'KeepMe' }) })

    await wrapper.get('[data-testid="node-header-1"]').trigger('dblclick')
    const input = wrapper.get('[data-testid="node-title-input"]')
    await input.setValue('Should Not Save')
    await input.trigger('keyup.escape')

    // Should not emit update:title
    expect(wrapper.emitted('update:title')).toBeFalsy()

    // Title remains the original
    expect(wrapper.get('[data-testid="node-title"]').text()).toContain('KeepMe')
  })

  it('honors readonly: hides collapse button and prevents editing', async () => {
    const wrapper = mountHeader({ readonly: true })

    // Collapse button should be hidden
    const btn = wrapper.find('[data-testid="node-collapse-button"]')
    expect(btn.exists()).toBe(true)
    // v-show hides via display:none
    expect((btn.element as HTMLButtonElement).style.display).toBe('none')
    // In unit test, presence is fine; simulate double click should not create input
    await wrapper.get('[data-testid="node-header-1"]').trigger('dblclick')
    const input = wrapper.find('[data-testid="node-title-input"]')
    expect(input.exists()).toBe(false)
  })

  it('renders correct chevron icon based on collapsed prop', async () => {
    const wrapper = mountHeader({ collapsed: false })
    const expandedIcon = wrapper.get('i')
    expect(expandedIcon.classes()).toContain('pi-chevron-down')

    await wrapper.setProps({ collapsed: true })
    const collapsedIcon = wrapper.get('i')
    expect(collapsedIcon.classes()).toContain('pi-chevron-right')
  })

  describe('Tooltips', () => {
    it('applies tooltip directive to node title with correct configuration', () => {
      const wrapper = mountHeader({
        nodeData: makeNodeData({ type: 'KSampler' })
      })

      const titleElement = wrapper.find('[data-testid="node-title"]')
      expect(titleElement.exists()).toBe(true)

      // Check that v-tooltip directive was applied
      const directive = wrapper.vm.$el.querySelector(
        '[data-testid="node-title"]'
      )
      expect(directive).toBeTruthy()
    })

    it('disables tooltip when in readonly mode', () => {
      const wrapper = mountHeader({
        readonly: true,
        nodeData: makeNodeData({ type: 'KSampler' })
      })

      const titleElement = wrapper.find('[data-testid="node-title"]')
      expect(titleElement.exists()).toBe(true)
    })

    it('disables tooltip when editing is active', async () => {
      const wrapper = mountHeader({
        nodeData: makeNodeData({ type: 'KSampler' })
      })

      // Enter edit mode
      await wrapper.get('[data-testid="node-header-1"]').trigger('dblclick')

      // Tooltip should be disabled during editing
      const titleElement = wrapper.find('[data-testid="node-title"]')
      expect(titleElement.exists()).toBe(true)
    })

    it('creates tooltip configuration when component mounts', () => {
      const wrapper = mountHeader({
        nodeData: makeNodeData({ type: 'KSampler' })
      })

      // Verify tooltip directive is applied to the title element
      const titleElement = wrapper.find('[data-testid="node-title"]')
      expect(titleElement.exists()).toBe(true)

      // The tooltip composable should be initialized
      expect(wrapper.vm).toBeDefined()
    })

    it('uses tooltip container from provide/inject', () => {
      const wrapper = mountHeader({
        nodeData: makeNodeData({ type: 'KSampler' })
      })

      expect(wrapper.exists()).toBe(true)
      // Container should be provided through inject
      const titleElement = wrapper.find('[data-testid="node-title"]')
      expect(titleElement.exists()).toBe(true)
    })
  })
})