import { resolveConflict } from '@/lib/sync-conflict-resolver'
import { BibleHighlight } from '@/types'

describe('SyncConflictResolver', () => {
  it('should prefer server version if newer', () => {
    const clientVersion: BibleHighlight = {
      id: 'h-1',
      verseId: 'v-1',
      color: 'yellow',
      createdAt: 1000,
      updatedAt: 1000,
      syncStatus: 'pending'
    }

    const serverVersion: BibleHighlight = {
      id: 'h-1',
      verseId: 'v-1',
      color: 'blue',
      createdAt: 1000,
      updatedAt: 2000, // newer
      syncStatus: 'synced'
    }

    const result = resolveConflict(clientVersion, serverVersion)
    expect(result.color).toBe('blue')
    expect(result.updatedAt).toBe(2000)
  })

  it('should prefer client version if newer', () => {
    const clientVersion: BibleHighlight = {
      id: 'h-1',
      verseId: 'v-1',
      color: 'blue',
      createdAt: 1000,
      updatedAt: 3000, // newer
      syncStatus: 'pending'
    }

    const serverVersion: BibleHighlight = {
      id: 'h-1',
      verseId: 'v-1',
      color: 'yellow',
      createdAt: 1000,
      updatedAt: 2000,
      syncStatus: 'synced'
    }

    const result = resolveConflict(clientVersion, serverVersion)
    expect(result.color).toBe('blue')
    expect(result.updatedAt).toBe(3000)
  })

  it('should mark as synced after resolution', () => {
    const clientVersion: BibleHighlight = {
      id: 'h-1',
      verseId: 'v-1',
      color: 'yellow',
      createdAt: 1000,
      updatedAt: 2000,
      syncStatus: 'pending'
    }

    const serverVersion: BibleHighlight = {
      id: 'h-1',
      verseId: 'v-1',
      color: 'yellow',
      createdAt: 1000,
      updatedAt: 2000,
      syncStatus: 'synced'
    }

    const result = resolveConflict(clientVersion, serverVersion)
    expect(result.syncStatus).toBe('synced')
  })
})