import { HighlightSyncManager } from '@/lib/highlight-sync-manager'
import { BibleHighlight } from '@/types'

describe('HighlightSyncManager', () => {
  let manager: HighlightSyncManager

  beforeEach(() => {
    manager = new HighlightSyncManager()
  })

  it('should add highlight to sync queue', async () => {
    const highlight: BibleHighlight = {
      id: 'h-1',
      verseId: 'v-1',
      color: 'yellow',
      createdAt: Date.now(),
      updatedAt: Date.now(),
      syncStatus: 'pending'
    }

    await manager.queueHighlight(highlight)
    const pending = await manager.getPendingSyncItems()

    expect(pending.length).toBe(1)
    expect(pending[0].id).toBe('h-1')
  })

  it('should mark highlight as syncing', async () => {
    const highlight: BibleHighlight = {
      id: 'h-1',
      verseId: 'v-1',
      color: 'yellow',
      createdAt: Date.now(),
      updatedAt: Date.now(),
      syncStatus: 'pending'
    }

    await manager.queueHighlight(highlight)
    await manager.markSyncing(['h-1'])

    const syncing = await manager.getSyncingItems()
    expect(syncing.length).toBe(1)
  })

  it('should mark highlight as synced', async () => {
    const highlight: BibleHighlight = {
      id: 'h-1',
      verseId: 'v-1',
      color: 'yellow',
      createdAt: Date.now(),
      updatedAt: Date.now(),
      syncStatus: 'pending'
    }

    await manager.queueHighlight(highlight)
    await manager.markSynced(['h-1'])

    const pending = await manager.getPendingSyncItems()
    expect(pending.length).toBe(0)
  })

  it('should retry sync on error', async () => {
    const highlight: BibleHighlight = {
      id: 'h-1',
      verseId: 'v-1',
      color: 'yellow',
      createdAt: Date.now(),
      updatedAt: Date.now(),
      syncStatus: 'pending'
    }

    await manager.queueHighlight(highlight)
    await manager.markError(['h-1'], 'Network error')
    await manager.markSyncing(['h-1'])

    const syncing = await manager.getSyncingItems()
    expect(syncing.length).toBe(1)
  })

  it('should perform sync and mark items as synced', async () => {
    const highlight: BibleHighlight = {
      id: 'h-1',
      verseId: 'v-1',
      color: 'yellow',
      createdAt: Date.now(),
      updatedAt: Date.now(),
      syncStatus: 'pending'
    }

    await manager.queueHighlight(highlight)
    await manager.init()

    // Mock fetch
    global.fetch = jest.fn(() =>
      Promise.resolve({
        ok: true,
        json: () => Promise.resolve({ synced: 1, errors: [] })
      })
    ) as jest.Mock

    const result = await manager.performSync()

    expect(result.synced).toBe(1)
    expect(result.errors).toBe(0)
  })
})