// src/plugin/__tests__/plugin-register-view.test.ts
import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest'
import { Plugin } from '../plugin'
import { App } from '../app'
import { Vault } from '../vault'
import { FileIndex } from '../../services/file-index'
import { Workspace } from '../workspace'
import { ItemView } from '../views/item-view'

class TestPlugin extends Plugin {
  onload() {
    this.registerView('test-view', (leaf) => new TestView(leaf))
  }
}

class TestView extends ItemView {
  getViewType() { return 'test-view' }
  getDisplayText() { return 'Test' }
}

function createApp() {
  const dm = { createFile: vi.fn(), createFolder: vi.fn(), readText: vi.fn(async (url: string) => ({ status: 'unavailable' as const, documentId: url })), updateContent: vi.fn() } as any
  const vault = new Vault('Test', new FileIndex(dm, 'automerge:root' as any), dm)
  const workspace = new Workspace(document.createElement('div'))
  return new App(vault, workspace)
}

describe('Plugin.registerView delegation', () => {
  let app: App

  beforeEach(() => {
    app = createApp()
  })

  afterEach(() => {
    app.destroy()
  })

  it('delegates to workspace.registerViewType on load', () => {
    const plugin = new TestPlugin(app, {
      id: 'test', name: 'Test', author: 'Test', version: '1.0.0',
      minAppVersion: '0.0.0', description: 'Test plugin',
    })
    plugin.load()

    expect(app.workspace.getViewCreator('test-view')).toBeDefined()
  })

  it('unregisters views from workspace on unload', () => {
    const plugin = new TestPlugin(app, {
      id: 'test', name: 'Test', author: 'Test', version: '1.0.0',
      minAppVersion: '0.0.0', description: 'Test plugin',
    })
    plugin.load()
    expect(app.workspace.getViewCreator('test-view')).toBeDefined()

    plugin.unload()
    expect(app.workspace.getViewCreator('test-view')).toBeUndefined()
  })

  it('no-ops registerView when plugin is not loaded', () => {
    const plugin = new TestPlugin(app, {
      id: 'test', name: 'Test', author: 'Test', version: '1.0.0',
      minAppVersion: '0.0.0', description: 'Test plugin',
    })
    // Don't call load
    plugin.registerView('manual-view', (leaf) => new TestView(leaf))
    expect(app.workspace.getViewCreator('manual-view')).toBeUndefined()
  })

  it('handles load/unload/reload cycle', () => {
    const plugin = new TestPlugin(app, {
      id: 'test', name: 'Test', author: 'Test', version: '1.0.0',
      minAppVersion: '0.0.0', description: 'Test plugin',
    })

    plugin.load()
    expect(app.workspace.getViewCreator('test-view')).toBeDefined()

    plugin.unload()
    expect(app.workspace.getViewCreator('test-view')).toBeUndefined()

    plugin.load()
    expect(app.workspace.getViewCreator('test-view')).toBeDefined()
  })

  it('cleans up views alongside other plugin resources', () => {
    const plugin = new TestPlugin(app, {
      id: 'test', name: 'Test', author: 'Test', version: '1.0.0',
      minAppVersion: '0.0.0', description: 'Test plugin',
    })

    plugin.load()
    plugin.addCommand({ id: 'cmd', name: 'Test Command' })

    plugin.unload()

    // Both command and view should be cleaned up
    expect(app.commands.getCommand('test:cmd')).toBeUndefined()
    expect(app.workspace.getViewCreator('test-view')).toBeUndefined()
  })
})