import { describe, expect, it } from 'vitest'

import { getSelectedModelsMetadata } from '@/utils/modelMetadataUtil'

describe('modelMetadataUtil', () => {
  describe('filterModelsByCurrentSelection', () => {
    it('should filter models to only include those selected in widget values', () => {
      const node = {
        type: 'CheckpointLoaderSimple',
        widgets_values: ['model_a.safetensors'],
        properties: {
          models: [
            {
              name: 'model_a.safetensors',
              url: 'https://example.com/model_a.safetensors',
              directory: 'checkpoints'
            },
            {
              name: 'model_b.safetensors',
              url: 'https://example.com/model_b.safetensors',
              directory: 'checkpoints'
            }
          ]
        }
      }

      const result = getSelectedModelsMetadata(node)

      expect(result).toHaveLength(1)
      expect(result![0].name).toBe('model_a.safetensors')
    })

    it('should return empty array when no models match selection', () => {
      const node = {
        type: 'SomeNode',
        widgets_values: ['unmatched_model.safetensors'],
        properties: {
          models: [
            {
              name: 'model_a.safetensors',
              url: 'https://example.com/model_a.safetensors',
              directory: 'checkpoints'
            }
          ]
        }
      }

      const result = getSelectedModelsMetadata(node)

      expect(result).toHaveLength(0)
    })

    it('should handle multiple widget values', () => {
      const node = {
        type: 'SomeNode',
        widgets_values: ['model_a.safetensors', 42, 'model_c.ckpt'],
        properties: {
          models: [
            {
              name: 'model_a.safetensors',
              url: 'https://example.com/model_a.safetensors',
              directory: 'checkpoints'
            },
            {
              name: 'model_b.safetensors',
              url: 'https://example.com/model_b.safetensors',
              directory: 'checkpoints'
            },
            {
              name: 'model_c.ckpt',
              url: 'https://example.com/model_c.ckpt',
              directory: 'checkpoints'
            }
          ]
        }
      }

      const result = getSelectedModelsMetadata(node)

      expect(result).toHaveLength(2)
      expect(result!.map((m) => m.name)).toEqual([
        'model_a.safetensors',
        'model_c.ckpt'
      ])
    })

    it('should ignore non-string widget values', () => {
      const node = {
        type: 'SomeNode',
        widgets_values: [42, true, null, undefined, 'model_a.safetensors'],
        properties: {
          models: [
            {
              name: 'model_a.safetensors',
              url: 'https://example.com/model_a.safetensors',
              directory: 'checkpoints'
            }
          ]
        }
      }

      const result = getSelectedModelsMetadata(node)

      expect(result).toHaveLength(1)
      expect(result![0].name).toBe('model_a.safetensors')
    })

    it('should ignore empty strings', () => {
      const node = {
        type: 'SomeNode',
        widgets_values: ['', '  ', 'model_a.safetensors'],
        properties: {
          models: [
            {
              name: 'model_a.safetensors',
              url: 'https://example.com/model_a.safetensors',
              directory: 'checkpoints'
            }
          ]
        }
      }

      const result = getSelectedModelsMetadata(node)

      expect(result).toHaveLength(1)
      expect(result![0].name).toBe('model_a.safetensors')
    })

    it('should return undefined for nodes without model metadata', () => {
      const node = {
        type: 'SomeNode',
        widgets_values: ['model_a.safetensors']
      }

      const result = getSelectedModelsMetadata(node)

      expect(result).toBeUndefined()
    })

    it('should return undefined for nodes without widgets_values', () => {
      const node = {
        type: 'SomeNode',
        properties: {
          models: [
            {
              name: 'model_a.safetensors',
              url: 'https://example.com/model_a.safetensors',
              directory: 'checkpoints'
            }
          ]
        }
      }

      const result = getSelectedModelsMetadata(node)

      expect(result).toBeUndefined()
    })

    it('should return undefined for nodes with empty widgets_values', () => {
      const node = {
        type: 'SomeNode',
        widgets_values: [],
        properties: {
          models: [
            {
              name: 'model_a.safetensors',
              url: 'https://example.com/model_a.safetensors',
              directory: 'checkpoints'
            }
          ]
        }
      }

      const result = getSelectedModelsMetadata(node)

      expect(result).toBeUndefined()
    })

    it('should return undefined for nodes with empty models array', () => {
      const node = {
        type: 'SomeNode',
        widgets_values: ['model_a.safetensors'],
        properties: {
          models: []
        }
      }

      const result = getSelectedModelsMetadata(node)

      expect(result).toBeUndefined()
    })

    it('should handle object widget values', () => {
      const node = {
        type: 'SomeNode',
        widgets_values: {
          ckpt_name: 'model_a.safetensors',
          seed: 42
        },
        properties: {
          models: [
            {
              name: 'model_a.safetensors',
              url: 'https://example.com/model_a.safetensors',
              directory: 'checkpoints'
            },
            {
              name: 'model_b.safetensors',
              url: 'https://example.com/model_b.safetensors',
              directory: 'checkpoints'
            }
          ]
        }
      }

      const result = getSelectedModelsMetadata(node)

      expect(result).toHaveLength(1)
      expect(result![0].name).toBe('model_a.safetensors')
    })

    it('should work end-to-end to filter outdated metadata', () => {
      const node = {
        type: 'CheckpointLoaderSimple',
        widgets_values: ['current_model.safetensors'],
        properties: {
          models: [
            {
              name: 'current_model.safetensors',
              url: 'https://example.com/current_model.safetensors',
              directory: 'checkpoints'
            },
            {
              name: 'old_model.safetensors',
              url: 'https://example.com/old_model.safetensors',
              directory: 'checkpoints'
            }
          ]
        }
      }

      const result = getSelectedModelsMetadata(node)

      expect(result).toHaveLength(1)
      expect(result![0].name).toBe('current_model.safetensors')
    })
  })
})