/**
 * Tests for NodeHeader subgraph functionality
 */
import { createTestingPinia } from '@pinia/testing'
import { mount } from '@vue/test-utils'
import { beforeEach, describe, expect, it, vi } from 'vitest'

import type { VueNodeData } from '@/composables/graph/useGraphNodeManager'
import NodeHeader from '@/renderer/extensions/vueNodes/components/NodeHeader.vue'
import { getNodeByLocatorId } from '@/utils/graphTraversalUtil'

// Mock dependencies
vi.mock('@/scripts/app', () => ({
  app: {
    graph: null as any
  }
}))

vi.mock('@/utils/graphTraversalUtil', () => ({
  getNodeByLocatorId: vi.fn(),
  getLocatorIdFromNodeData: vi.fn((nodeData) =>
    nodeData.subgraphId
      ? `${nodeData.subgraphId}:${String(nodeData.id)}`
      : String(nodeData.id)
  )
}))

vi.mock('@/composables/useErrorHandling', () => ({
  useErrorHandling: () => ({
    toastErrorHandler: vi.fn()
  })
}))

vi.mock('vue-i18n', () => ({
  useI18n: () => ({
    t: vi.fn((key) => key)
  }),
  createI18n: vi.fn(() => ({
    global: {
      t: vi.fn((key) => key)
    }
  }))
}))

vi.mock('@/i18n', () => ({
  st: vi.fn((key) => key),
  t: vi.fn((key) => key),
  i18n: {
    global: {
      t: vi.fn((key) => key)
    }
  }
}))

describe('NodeHeader - Subgraph Functionality', () => {
  // Helper to setup common mocks
  const setupMocks = async (isSubgraph = true, hasGraph = true) => {
    const { app } = await import('@/scripts/app')

    if (hasGraph) {
      ;(app as any).graph = { rootGraph: {} }
    } else {
      ;(app as any).graph = null
    }

    vi.mocked(getNodeByLocatorId).mockReturnValue({
      isSubgraphNode: () => isSubgraph
    } as any)
  }

  beforeEach(() => {
    vi.clearAllMocks()
  })

  const createMockNodeData = (
    id: string,
    subgraphId?: string
  ): VueNodeData => ({
    id,
    title: 'Test Node',
    type: 'TestNode',
    mode: 0,
    selected: false,
    executing: false,
    subgraphId,
    widgets: [],
    inputs: [],
    outputs: [],
    hasErrors: false,
    flags: {}
  })

  const createWrapper = (props = {}) => {
    return mount(NodeHeader, {
      props,
      global: {
        plugins: [createTestingPinia({ createSpy: vi.fn })],
        mocks: {
          $t: vi.fn((key: string) => key),
          $primevue: { config: {} }
        }
      }
    })
  }

  it('should show subgraph button for subgraph nodes', async () => {
    await setupMocks(true) // isSubgraph = true

    const wrapper = createWrapper({
      nodeData: createMockNodeData('test-node-1'),
      readonly: false
    })

    await wrapper.vm.$nextTick()

    const subgraphButton = wrapper.find('[data-testid="subgraph-enter-button"]')
    expect(subgraphButton.exists()).toBe(true)
  })

  it('should not show subgraph button for regular nodes', async () => {
    await setupMocks(false) // isSubgraph = false

    const wrapper = createWrapper({
      nodeData: createMockNodeData('test-node-1'),
      readonly: false
    })

    await wrapper.vm.$nextTick()

    const subgraphButton = wrapper.find('[data-testid="subgraph-enter-button"]')
    expect(subgraphButton.exists()).toBe(false)
  })

  it('should not show subgraph button in readonly mode', async () => {
    await setupMocks(true) // isSubgraph = true

    const wrapper = createWrapper({
      nodeData: createMockNodeData('test-node-1'),
      readonly: true
    })

    await wrapper.vm.$nextTick()

    const subgraphButton = wrapper.find('[data-testid="subgraph-enter-button"]')
    expect(subgraphButton.exists()).toBe(false)
  })

  it('should emit enter-subgraph event when button is clicked', async () => {
    await setupMocks(true) // isSubgraph = true

    const wrapper = createWrapper({
      nodeData: createMockNodeData('test-node-1'),
      readonly: false
    })

    await wrapper.vm.$nextTick()

    const subgraphButton = wrapper.find('[data-testid="subgraph-enter-button"]')
    await subgraphButton.trigger('click')

    expect(wrapper.emitted('enter-subgraph')).toBeTruthy()
    expect(wrapper.emitted('enter-subgraph')).toHaveLength(1)
  })

  it('should handle subgraph context correctly', async () => {
    await setupMocks(true) // isSubgraph = true

    const wrapper = createWrapper({
      nodeData: createMockNodeData('test-node-1', 'subgraph-id'),
      readonly: false
    })

    await wrapper.vm.$nextTick()

    // Should call getNodeByLocatorId with correct locator ID
    expect(vi.mocked(getNodeByLocatorId)).toHaveBeenCalledWith(
      expect.anything(),
      'subgraph-id:test-node-1'
    )

    const subgraphButton = wrapper.find('[data-testid="subgraph-enter-button"]')
    expect(subgraphButton.exists()).toBe(true)
  })

  it('should handle missing graph gracefully', async () => {
    await setupMocks(true, false) // isSubgraph = true, hasGraph = false

    const wrapper = createWrapper({
      nodeData: createMockNodeData('test-node-1'),
      readonly: false
    })

    await wrapper.vm.$nextTick()

    const subgraphButton = wrapper.find('[data-testid="subgraph-enter-button"]')
    expect(subgraphButton.exists()).toBe(false)
  })

  it('should prevent event propagation on double click', async () => {
    await setupMocks(true) // isSubgraph = true

    const wrapper = createWrapper({
      nodeData: createMockNodeData('test-node-1'),
      readonly: false
    })

    await wrapper.vm.$nextTick()

    const subgraphButton = wrapper.find('[data-testid="subgraph-enter-button"]')

    // Mock event object
    const mockEvent = {
      stopPropagation: vi.fn()
    }

    // Trigger dblclick event
    await subgraphButton.trigger('dblclick', mockEvent)

    // Should prevent propagation (handled by @dblclick.stop directive)
    // This is tested by ensuring the component doesn't error and renders correctly
    expect(subgraphButton.exists()).toBe(true)
  })
})